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Gateway Corporate Center
c 15 Y o AW COMMUNITY DEVELOPMENT DIAMOND BAR Clear Form C AL I F 0 RN IA PROJECT FILE CHECKLIST Instructions; This form is to be used when closing out project files. Please complete electronically and include this form as the cover page prior to scanning. Project Name: Planning Case Number: Street Address: APN: Lot Number: k- Tract Number: 5 Parcel Map Number: Key documents to be scanned in the following order: Planning Application Approval / Denial Letter Relevant Correspondence Final Signed Resolution Agenda and Minutes Staff Report and Resolution (including all attachments to the staff report) Plans Approved Architectural Conceptual Grading Approved Landscape Approved Fuel Modification Covenant Signed Affidavit City Attorney Correspondence Project Manager's Signature: Date: CITY OF DIAMOND BAR DEPARTMENT OF PLANNING 21660 E. Copley Drive Suite 190 714)396-5676 Fax (714)861-3117 CONDITIONAL USE PERMIT APPLICATION y)Z4)g3 `%30fw'- Record Owner(s) Case# 93 — / Recvd Fee $ Receipt _ By V 9,4' Applicant Applicant's Agent Name Dr. Akbar Omar Dr. Akbar Omar SPA Architects Last name first) Address 2216 E. Merced City Diamond Bar zip 91790 Phone (818) 919-0504 2216 E. Merced Diamond Rnr 91790 18) 919-0504 12600 Central Ave. 91710 714) 591-7441 Attach separate sheet if necessary, including names, addresses, and signatures of members of partnerships, joint ventures, and directors of corporations) CONSENT: I consent to the submission of the application accompanying this request Signed Hate All recorded owners) certification: I, the undersigned, hereby certify under penalty of perjury that the information herein provided is correct to the hest of my knowledge. Printed Name: Signed Syed Raza Applicant or Agent) Date Applicant or Agent) Location 216-71 E. Gateway Center Dr., Diamond Bar, CA 91790 Street address or tract and tot number) Zoning CM HNM 111337 Previous Cases Present Use of Site Use applied for Not used, vacant. taurant Project Size (gross acres) 1.33 Acres Domestic Water Source Yes Project density N/A company/District Walnut Water Method of Sewage disposal Public Sewer Sanitation District L.A. County Sanitation Grading of Lots by Applicant? Yes x No show necessary grading design on site plan or tent map) APPROPRIATE BURDENS OF.PROOF MUST ACCOMPANY REQUEST LEGAL DESCRIPTION (all ownership comprising the proposed lots)/parcel(s) A PORTION OF LOT 4 AS PER TRACT NUMBER 39679 IN THE CITY OF DIAMOND BAR, BOOK 1083 PAGES 14-21 OF TRACT MAPS INTHa QFFrCF QH THE rnTrntTy 27CCRDER OF SAID COUNTY. Area devoted to structures 9200 Sq. FtLandscaping/Open space 8866 Sq. Ft. Residential Project: Nip' and N/A gross area) (No. of lots) Proposed density NSA Units/Acres) Parking Required Provided Standard 112 112 Compact Handicapped Total 114 114 _ 3 _ t*iwrr ubL) PRO= NUMER(s) INITIAL STUDY QUESTIONNAIRE A. GENERAL INFORMTION Project Applicant (Owner)' Project Representative :, 4. 0• 0oC ;-2- Name C P Lan e EniDiamondBarBusinessAssociates neers tiamE 515 South Figueroa StreetSuite 900 40- Address I Kddres Los Angeles CA, 90071 aU land CA 91786 213) 628--0624 ( 714) 946--9919 k` Phone Number Phone Number 1. Action requested and project description: A 12 arcel/ arcel map 2. Street location of project: 21600 Gateway Center Drive 3a. Present use of site: Vacant 3b. Previous use of site or structures: Vacant 4. Please list all previous cases if any) related to this project: Tract No. 39679 5. Other related permit/approvals required. specify type and granting agency. 6. Are you planning future phases of this project? 177 If yes explain: 7. Project area: 8. Number of floors: Covered by structures, paving: 1.26 Acres 9. Present Zoning: CMBE - IIC street paving) Landscaping, open space: 5.25 Acres landscaped slopes & parkvjay) 13.35 AcresTotalarea: 10. water and sewer service: Domestic Public Hater Sewers Does service exist at site? ff A /97 If yes, do purveyors have capacity to meet demand AU /7N /N-7 of project and all other approved projects? If domestic water or public sewers are not available, how will these services be provided? 1 - PM 1117E C,!' , ' i• ii • M 1.+ environmental Setting -- Project Site a. Existing use/structures Vacant b. Topography/slopes existing rough graded c. vegetation NIA d. Animals N/A e. Watercourses N A f. Cultural/historical resources N/A g. Othe r 2. Environmental Setting -- Surrounding Area a. Existing uses/structures (types, densities) : several Commercial/Industrial buildings b. Topography/slopes The entire Traci No. 39679 has exialina pads and all the infrastructure and streets c. vegetation N/A d. Animals N/A e. Watercourses N/A f. Cultural/historical resources N/A g. other 3. Are there any major trees on the site, including oak trees? /Y% 2W if yes, type and number: 4. Will any natural watercourses, surface flow patterns,, etc, be changed through project development?: 177 27 if yes, explain: Angers are not required if the area does not contain natural, undeveloped land. 3- TAM ZZ 17 61 B. ENVIRONMENTAL INFORMATION (cont.) 5. Are there any parks (Regional, County, local) or trails located within a one mile radius of project? X %17 If yes, please identify: Agaple Hill Park 6. Grading: Will the project If yes, how many Will it be _ require grading?, T,, 91 /X / cubic yards? 4,000 balanced on site? N/ If not balanced, where will dirt be obtained or deposited? 7. Are there any identifiable landslides or other major geologic hazards on the property including uncc9npacted fill)? %X7 If yes, explain: S. Is the property located within a high fire hazard area (hillsides with moderately dense vegetation? Y %S Distance to nearest fire station: 9. Noise: Existing noise sources at site: None Noise to be generated by project: None 10. Fumes: Odors generated by project: None Could toxic fumes be generated? None 11. What energy -conserving designs or material will be used? unknown at present CERTIFICATION: I hereby certify that the statements furnished above and in the attached exhibits present the data and information required for this initial evaluation to the best of my ability, and that the facts, statements, and information presented are true and correct to the beet of my knowledge and belief. Date:/Z`9d gnature For: C P Lan e En ineers 4 - 8/8S PA4 Z Z 1 `i$ tesidential projects: 11. Number and type of units: 12. Schools: VIhat school district(s) serves the property? Are existing school facilities adequate to meet project needs? T ri If not, what provisions Will be made for additional classrooms? 13. Distance to: Neighborhood Commerical Major Employment Public Park Non -Residential projects: 14. Distance to nearest residential use or sensitive use (school, hospital, etc.) 1500, 15. Number and floor area of buildings: N/A 16. Number of employees and shifts: N/A / 17. Maximum employees per shift: N/A operating FiourA_L. _ N/A IS. Identify any: End products Waste products N/A N/A Means of disposal N/A 19. Do project operations use, store or produce hazadous substances such as oil, pesticides, chemicals, paints, asbestos or radioactive materials? ZY7 IV If yes, explain: 2b. Do your operations require any pressurized tanks? /' If yes, explain: 21. Identify any flammable, reactive of explosive materials to be located on -site. None 22. Will delivery or shipment trucks travel through residential areas to reach the nearest highway? Q *% If yes, explain: 2 - T% 22 t7$ OAK TREE STATEME14T X] The subject property contains no oak trees. The subject property contains one or more oak trees, however the applicant anticipates that no activity (grading and/or construction) will take place within five (5) feet of the outer ciripline of any oak tree. The subject property contains one or more oak trees and the applicant states that activity (grading and/or construction) will take place within five (5) feet of the outer dripline of any oak tree. An Oak Tree Permit has been or will be applied for prior to any activity taking place on the property: AppliVant's Signature OTS29MG z 90 Date p(I& 2 2.17J3 city of Dfamend Bar InitW Silludy Fonn 21660 EAST COPLEY DRIVE 1d0 -- DIAMOND BAR, CA 91'765-4177 714-860-2489 FAX 714860-3117 I. Background: 1. Name of -Applicant: 2_ Adq ss and Phone Number 4. Date of nmerstal Inform tior Subm-2-8 i: r 9 co a S. Date of Environmental Checklist Submittal: - = 6. Lead Agen Agency R tnn9 Checiciist)'G 7• 1 n propeC—aria piica te (Traci o- n.,n 22 of this environmental determination): q- Related App lications (under the authority Yes No Variances : Conditional Use Pe Zone Change: General Plan Amendment: Atlacia Camptefed Environmental lnfox;naticn Form) VAN Nol - i'!. VUERNER (,ARY G. MILLER IDr 1 G ROSERty Mal EN AUI- Y H,RCHER GAR Cam.' } PHYLLISE. PAP proTc Cau _,.` city of !Diamond Bar Initial Study Form Page 2 ii. Environmental impacts: Explanations and additional information to supplement all "yes" and possibly, answers are required to be submitted on attached sheets) Yes No Possibly i. Earth. Will the proposal result In: a. Unstable earth conditions or changes in geologic substructures? b. Disruptions. displacements, compaction or overcovering of the soil? c. Change in topography or ground surface relief features? d. The destruction, covering or modification of any unique geologic or physical feature? e. Any increase in wind or water erosion of soils, either on or off the site? f. Changes in deposition, pperosion of stream banks or land adjacent to standing water, the channel of constant or intermittently flowing water osition or raswell as the areas sesseswhich urrounding permanent or intermittent standing water? g.: Exposwaof people or property to geologic hazards such s earthquakes, landslides, mudslides, ground failure, or similar hazards? 2 Air. Will the proposal result In: a. Substantial air emissions or deterioration of ambient air quality? b. The creation of objectionable odors? c. Alteration of air movement, moisture, or temperature, or any changes in climate, either locally or regionally? —Z. 3. Water. Wlll the proposal result In: _ a. Chang -- es in currents or the course or direction of water movements? b. Changes in absorption rates, drainage patterns, or the rate and amount of surface run-off? c. AlteratIons of the course or flow of flood waters? d9Changes in the amount of surface water in any body of water`? e. Discharge into surface waters, or in any alteration of surface water quality including butnotlimitedtodissolvedoxygenandturbidW. f. Alteration of the direction or rate of flow of ground waters? g. Change in the quantity of ground waters, either through direct additions or withdrawals, — or through interception of an aquifer by cuts or excavations? h. Substantial reduction in the amount of water otherwise available for public water supplies? i. Exposure of people or property to water related hazards such as flooding? _ — City of Diamond Bar initial Form age 3 yes No Possibly 4. Plant Life. Wllllil the proposal result In: a. Change in the diversity of species, or number of any species of plants (including trees, shrubs, grass, crops, and aquatic Qiants)? b. Reduction in the numbers of any unique rare or endangered speciewhich recognized c. Reduction in the size of sensitive habitat areas or plant communities/ as sensitive? .7 / d. introduction of new species of plants into an area, or in a barrier to the normal replenishment of existing species. e. Reduction in acreage of any agricultural crop? 5. Animal Life. W1 111 the proposal result In: a. Change in the diversity of species, or number of any species of animals (birds, land animalsincludingreptiles, fish and shellfish, benthic organisms and insects)? b. Reducti on in the numbers of any unique rare or endangered species of animals? c. introduction of new species of animals into an area, or in a barrier to the normal migration or movement of resident species? d. Reduction in size or deterioration in quality of existing fish or wildlife habitat? 6. Noise. Will the proposal result in: a. Significant increases in existing noise levels?- b. Exposure of people to severe noise levels 7. Light and Glare. Will the proposal result In, a. Significant new light and glare or contribute significantly to existing levels of light and glare? —jam 8. Land Use. Will the proposal result in: 17 J J a. A substantial alteration of the present or planned land use in an area. 9. Natural Resources. WIII the proposal result in: a. An increase in the rate of use of any natural resources? l 10. Risk of Upset. Will the proposal involve: but not limited a. A risk of an explosion or the or release radiation) in the event of an accident or inset condition to, oil, pesticides, chemicals response plan or an emergency evacuation plan? Probableinterferencewithanemergency city of Diamond Ber initial StudyageFoo Yes No Possibly i1. Population. Will the proposal: n of an area? rate of the human population • a. Alter the location, distribution, density, or growth 12. Housing- Wlii the proposal affect: a Existing housing, or create a -demand for additional housing? - 13. TransportationlClrculation. Will the proposal result in: a. -Generation of Substantial additional vehicular movement. b. Effects on existing parking facilities or demand for new parking? c. Substantial impact on existing transportation systems? or movement of people and goods. IL d. Alterations to present patterns of circulation e. Alterations to waterborne, rail or air traffic? f. increase in traffic hazards to motor vehicles, bicyclists or pedestrians? — 14. Public Services. Will the proposal: need for new or altered governmental services in anya. Have an eect upon, or result in theff of the following areas: 1. Fire protection? f 2. Police protection? 3. Schools? J -- 4. Parks or other recreational facilities? 5. Maintenance of public facilities, including roads? 1 6.Other governmental services? 15. Energy. Will the proposal result in: % a. use of substantial amounts of fuel or energy? — b. Substantial increase in dmand upon existing energy sources or require the development of new sources of energy? 16. utilities. WIII the proposal result in: a. A need for new systems, or Substantial alterations to public utilities? R City of Diamond Bar Initial Study Fo Yes No Possibly 17. Human Health. Wlil the proposal result In: = a. Creation of any health hazard or potential health hazard (excluding mental health)? b. Exposure of people to potential health hazards? 18; Aesthetics. Will the proposal result 1n: a. The obstruction of any scenic vista or site oeen to the publicoriew the proposal result in - the creation of an aesthetically offensive p 19. Recreation. Will the proposal result In: a. An impact upon the quality or quantity of existing recreational opportunities? 20. Cultural Resources. W111 the proposal result In: a. The alteration of or the destruction of a prehistoric or historic archaeological Sue? b. Adverse physical or aesthetic effects to a prehistoric or historic building, structure or object? c. A physical change which would affect unique ethnic cultural values? d. Restrictions on existing religious or sacred uses within the potential impact area. Cly of Diamond Bar initial StudyPage 6 Yes No Possibly 21. Mandatory Findings of Significance? al' of the environment, a. Does the proposed project have the potential to degrade fire qualitysubstantiatyreducethehabitatofafishorwildlifeesthreatenioaishoor wildlife population to drop below self sustaining reduce he number eliminate restrict significantly reduce a plant or animal community, important ofarareorendangeredplantoranimaoreliminateexamples the mples of he major periods of Ca afom ahistory orprehistory'? Does he proposed project have the potential to achieve short-term, to the disadvantage boflong-term, environmental goals. ct pose impacts which are individually limited but cumulatively — c. Does the proproject considerable'! Does he project pose environmental effectswhich will cause substantial adverse d. Da Pieffectsonhumanbeings, either directly or indirectly? III Discussion of Environmental Evaluation: Attach Narrative) IV. Determination: On the basis of this initial evaluation: I find that the proposed pro1'Je t rOIONw O have a sll be niticanteffecton the environment, and a NEGATIVE DECRAT Project could havea signif<cant effect on the environment, I find thatalthoughtheproposedsedproject. there will notbeaSignrflcanteffectincorporateddInto heproposed mitigation Prlon measures describecon the attached sheet have been A MITIGATED NEGATIVEDECLARATIONWILLBEPREPARED. I find that the proposed project MAY have is significantequ required- effe onthe environment, and an ENVIRONMENTAL IMPACT , Signature: - Date: Title: y , California Far the CityofDiamond ; PLANNING COMMISSION RESOLUTION NO. 98-20 A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF DIAMOND BAR, CALIFORNIA APPROVING DEVELOPMENT REVIEW NO. 98--10, FOR THE DEVELOPMENT OF TWO 82,944 SQUARE FOOT OFFICE BUILDINGS TOTALLING APPROXIMATELY 164,000 SQ. FT. ON A 13.35 ACRE SITE LOCATED ON LOT NO. 2 OF GATEWAY CORPORATE CENTER, DIAMOND BAR, CALIFORNIA, AND MAKING FINDINGS IN SUPPORT THEREOF. A. Recitals 1. Trammel Crow, acting as agent for A.E.W. Diamond Bar Associates, has filed an application for Development Review No. 98-10 to construct a pair of commercial office buildings (83,944 sq. ft. each) totalling approximately 164,000 sq. ft. The project site is located on Lot No. 2 of Gateway Corporate Center, Diamond Bar, Los Angeles County, California, as described in the title of this Resolution. Hereinafter in this Resolution, the subject Development Review is referred to as the Application". 2. Action was taken on the subject application as to its consistency with the General Plan. It has been determined that the proposed project is consistent with the General Plan. 3. The Planning Commission of the City of Diamond Bar, on October 13, 1998 conducted a duly noticed public hearing on the Application. 4. Notification of.the public hearing for this project was published made in the San Gabriel Valley Tribune and Inland Valley Daily Bulletin newspapers on September 23, 1998. Sixty-three property owners within a 300 foot radius of the project site were notified by mail on September 4, 1998. Resolution NOW, THEREFORE, it is found, determined and resolved by the Planning Commission of the City of Diamond Bar as follows: 1 1, The Planning Commission hereby specifically finds that all of the facts set forth in the Recitals, Part A, of this Resolution are true and correct. 2. The Planning Commission hereby determines that the project identified above in this Resolution is con- sistent with the Negative Declaration No. 98-3 prepared for this project pursuant to the California Environmental Quality Act of 1970 (CEQA) and guidelines promulgated thereunder, pursuant to Section 15162 (a) of Article.11 of the California Code of Regulations.. 3. Based upon the findings and conclusions set forth herein, this Planning Commission, hereby finds as follows: a) The project relates to a vacant, bulb shaped lot. The project site is approximately 13.35 acres with a 10 acre buildable pad. b) The project site is located within the Commercial Manufacturing -Billboard Exclusion -Unilateral Contract (CM -BE- U/C) Zone. It has a General Plan Land Use designation of Professional Office (OP). c) Generally, the following zones surround the subject site are within the same General Plan Designation OP) and Zone Classification (CM-BE-U/C). d) The project involves the construction of two 82,944 square foot office buildings. e) The nature, condition, and size of the site has been considered. The project site is adequate in size to accommodate the use. The original approval of the professional office park delineates the size of the lot and buildable pad. The analysis of the project's proposed development and the Corporate Center's approved development standards indicates that the proposed project complies with approved development standards. Therefore, the project site is adequate in size to accommodate the use. f) The design and layout of the proposed development is consistent with the applicable elements of the City's General Plan, design guidelines of the appropriate district, and any adopted architectural criteria for specialized area, such as designated 2 historic districts, theme areas, specific plans, community plans, boulevards, or planned develop- ments. The project has been reviewed and approved by the Architectural Review Board of Gateway Corporate Center. The design of the project is consistent with the Gateway Corporate Center Design Guidelines and applicable City development standards. g) The proposed project will not be detrimental to the public health, safety, or welfare or materially injurious to the properties or improvements in the vicinity. City permits and soils report are required for construction which will ensure that the finished project will not, be detrimental to the public health, safety, or welfare, or materially injurious to the properties or improvements in the vicinity. h) The design and layout of the proposed project will not unreasonably interfere with the use and enjoyment of neighboring existing or future development, and will not create traffic or pedestrian hazards. The Negative Declaration and supporting analyses prepared by or for the City, addresses the design and layout of the commercial complex as well as the flow of pedestrian and vehicular traffic. i) The architectural design of the proposed project is compatible with the characters of the surrounding office complex and will maintain the harmonious, orderly and attractive development contemplated by Chapter 22.72 of Development Review Ordinance No. 5 1990) . The proposed project's architectural design is compatible with the previously approved commercial construction for the surrounding tract and the eclectic architectural style exhibited by other office buildings within the Corporate Center. j) The design of the proposed project will provide a desirable environment for its occupants and visiting public as well as its neighbors through good aesthetic use of materials, texture, and color 3 that will remain aesthetically appealing and will retain a reasonably adequate level of maintenance. A project colors/materials board is provided as Exhibit "A". k) The project site is adequately served by Golden Springs Drive and Gateway Corporate Center Drive. Additionally, this issue is addressed in the certified Environmental Impact Report for Tract 39679 and Negative Declaration No. 98-3. 5. Based upon the findings and conclusion set forth above, the Planning Commission hereby approves this Application subject to the following conditions: a) The project shall substantially conform to site plan, floor plan, elevations, landscape/irrigation plan and materials/colors board collectively labeled as Exhibit "A" dated October 13, 1998 as submitted to and approved by the. Planning Commission. b) The subject site shall be maintained in a condition which is free of debris both during and after the construction, addition, or implementation of the entitlement granted herein. The removal of all trash, debris, and refuse, whether during or subsequent to construction shall be done only by the property owner, applicant or by duly permitted waste contractor, who has been authorized by the City to provide collection, transportation, and disposal of solid waste from residential, commercial, construction, and industrial areas within the City. It shall be the applicant's obligation to insure that the waste contractor utilized has obtained permits from the City of Diamond Bar to provide such services. c) Before construction begins, the applicant shall install temporary construction fencing to protect the required mitigation monitoring landscaping from damage that may occur during construction, to the Building and Safety Division's requirements. This fencing shall remain until the Planning Division's final inspection is completed and the Building Official approves its removal. N d) Prior to the approval of the final inspection, the applicant shall install and complete all elements of the plans and mitigation measures prescribed within this grant. Landscape/irrigation plans shall comply with the City's Water Efficient Landscape Regulations and shall be approved accordingly, prior to issuance of any City permits. The Deputy City Manager may allow phasing of development or improvements as deemed appropriate or may refer issues to the Planning Commission for direction. e) Walls, gates and any other structures proposed within the front yard shall not be in the streets' dedicated easement. f) Roof finish material shall have a uniform color so as to reduce reflectivity. Additionally, all roof mounted equipment must be painted a color to match the roof finish material. g) Roof mounted equipment shall be hidden behind building parapets so as not to be visible from surrounding streets, drives or adjacent buildings on a horizontal sight line. h) Where roof mounted equipment is not hidden from residential view by the building parapet, a screen shall be constructed using materials complimentary with existing buildings in the area. The design of the screen shall be integrated into the overall architectural design of the building. The surface of the screen shall be finished with a color to match the roof finish material. i) The applicant shall, if required by the City, submit a Transportation Demand Management Plan for approval by the Deputy City Manager and the Deputy Public Works Director prior to Certificate of Occupancy of any phase of the project in compliance with ordinance No. 1 (1993). j) The applicant shall submit a construction traffic management plan for approval by the Deputy Public Works Director prior to issuance of any building permit that will at a minimum: 1) Provide a parking plan for construction related vehicles for each development phase. 5 2) Ensure construction -related traffic will be directed away from residential areas during the grading phase(s). k) The applicant shall reduce construction related emissions of dust by the watering the site at least twice daily sufficient to control dust producing activities especially during the grading stage. 1) The applicant shall restrict all noise intensive construction activities to the hours of 7 a.m to 5 p.m. Monday through Friday and 8 a.m. to 5 p.m. on Saturday. m) The applicant shall provide noise monitoring equipment on the construction site to the satisfaction of the Deputy City Manager to monitor the noise level to ensure compliance with the existing noise standards. If the noise standards are exceeded the project shall be brought immediately into compliance. The noise level during the construction phase shall not exceed the level authorized in the noise ordinance for construction sites. n) All exterior walls, not a part of habitable or storage structures, shall be textured in muted tones and shall additionally be covered with ivy or other similar vegetation. o) No signs are approved as a part of this application. All signs shall be submitted to the City under separate application and must comply with all standards in effect at the time of application. p) The applicant shall install or fund the installation of all traffic mitigation measures identified as a component of the City's mitigation monitoring program. q) The grading plan shall delineate the following: 1) Cut and fill quantities and calculations greater than 50 cubic yards; 2) All flow lines, finished surfaces, and finished grades; 3) Proper drainage with detailed sketches; 4) Proposed and existing grades; 5) All easements; and 6) Driveway slope (not to exceed 15 percent). 0 r) Applicant shall provide Fine Grade Certification prior to building final. s) Erosion control per approved Tract Erosion Control Plans shall be utilized between October 1 and April 15. t) The commercial structures shall meet the 1994 U.S.C., U.P.C., U.M.C., and the 1993 National Electric Code requirements. u) The minimum design wind pressure shall be 80 miles per hour and "C" exposure. v) The commercial structures are located in "Fire Zone 4" and shall meet the following requirements of that fire zone: 1) All roof covering shall be "Fire Retardant, Class A"; the roofs shall be fire stopped at the eaves to preclude entry of the flame or members under the fire; 2) All enclosed under -floor areas shall be constructed as exterior walls; 3) All openings into the attic, floor, and/or other enclosed areas shall be covered with corrosion -resistant wire mesh not less than 1/ inch nor more than 'A inch in any dimension except where such openings are equipped with sash or door; 4) Chimneys shall have spark arrestors of maximum lh inch screen. w) These structures shall meet the State Energy Conservation Standards. x) Drainage pattern shall be review and approved by the Public Works Division; surface water shall drain away from the building at a 2% minimum slope. y) The Applicant shall comply with Planning and Zoning, Building and Safety, and Public Works Division's and County of Los Angeles Fire Department requirements. z) Structural plans shall indicate roof pitch. aa) This grant is valid for two (2) years and shall be exercised (i.e. construction) within that period or this grant shall expire. A one (1) year extension 7 may be requested in writing and submitted to the City 30 days prior to this grant's expiration date. ab) This grant shall not be effective for any purpose until the permittee and owner of the property involved (if other than the permittee) have filed, within fifteen (15) days of approval of this grant, at the City of Diamond Bar Community Development Department, their affidavit stating that they are aware of and agree to accept all the conditions of this grant. Further, this grant shall not be effective until the permittee pays remaining City processing fees. ac) On -site driveways shall be labeled as "Private Driveway and Fire Lane" on the final plans. Fire lanes and private driveways shall be designed in accordance with the Los Angeles County Fire Code and must be clearly delineated and dimensioned. ad) The applicant shall modify the driveway/drive approach to conform to the City's commercial standard. Fire Department approval shall be required prior to final approval. 6. The Planning Commission Secretary shall: a) Certify to the adoption of this Resolution; and b) Forthwith transmit a certified copy of this Reso- lution, to Tooley & Co., 5801 S. Eastern Avenue, 100, Los Angeles, CA 90040 as set forth on the application. APPROVED AND ADOPTED THIS THE 13TH DAY OF October, 1998 BY THE PLANNING COMMISSION OF THE CITY OF DIAMOND BAR. BY: Joe McManus, Chairman I, James DeStefano, Planning Commission Secretary, do hereby certify that the foregoing Resolution was duly introduced, passed, and adopted, by the Planning Commission on the 13TH day of October, 1998 with the following vote: K AYES: COMMISSIONERS: Tye, McManus, Nelson, Ruzicka, Kuo NOES: COMMISSIONERS: None ABSENT: COMMISSIONERS: None ABSTAIN: COMMISSIONERS: None ATTEST: James DeStefano, Secretary RESOLUTION NO. 94-1.2 A RESOLUTION OF THE .PLANNING COMMISSION OF THE CITY OF DIAMOND BAR APPROVING DEVELOPMENT 93-1, CONDITIONAL USE PERMIT NO. REVIEW NO. 93-4, AND NEGATIVE DECLARATION NO. .93-7, AN APPLICATION FOR CONSTRUCTION OF A TWO-STORY UPSCALE" RESTAURANT STRUCTURE, TO PERMIT THE SALE AND ON -SITE CONSUMPTION OF ALCOHOLIC BEVERAGES IN THE C--M ZONE, AND GRADING IN .A HILLSIDE MANAGEMENT AREA LOCATED WITHIN GATEWAY CORPORATE CENTER AT 21671. E. GATEWAY CENTER DRIVE, (TRACT.39679, LOT 4). A. Recitals 1. The property owner, A R Leasing and Investment Inc. and the applicant, Dr. Akbar Omar have filed an application for Development Review No. 93-1 and Conditional Use Permit No. 93-4 for a vacant -lot located within Gateway Corporate Center at 21671 E. Gateway Center Drive,,Dia- mond Bar, Los Angeles County, California, as described in the title of this Resolution. Hereinafter in this Resolution, the subject Development Review and Conditional Use Permit application is referred to as the Application". 2. On April 18, 1989, the City of Diamond Bar was established as a duly organized municipal organization of the State of California. On said date, pursuant to the requirements of the California Government Code Section 57376, Title 21 and 22, the City Council of the City of Diamond Bar adopted its Ordinance No. 1, thereby adopting the Los Angeles County Code as the ordinances of the City of Diamond Bar. Title 21 and 22 of the Los Angeles County Code contains the Development Code of the County of Los Angeles .now currently applicable to development applications, including the - subject Application, within the City of Diamond Bar. 3. The City of Diamond Bar lacks an operative General Plan. Accordingly, action was taken on the subject application, as to consistency to the future adopted General -Plan, pursuant to the terms and provisions of the Office of Planning and Research extension granted pursuant to California Government Code Section 65361. 4. The Planning Commission of the City of Diamond Bar, on June 13, 1994 conducted a duly noticed public hearing on said Application. 1 5. All legal prerequisites to the adoption of this Resolu- tion have occurred. B. Resolution NOW, THEREFORE, it is found, determined and resolved by the Planning Commission of the City of Diamond Bar as follows: 1. The Planning Commission hereby specifically finds that all of the facts set forth in the Recitals, Part A, of this Resolution are true and correct. 2. The Planning Commission hereby finds that the initial study review and Negative Declaration No. 93--7 has been prepared by the City of Diamond Bar in compliance withtherequirementsoftheCaliforniaEnvironmentalQuality Act of 1970, as 'amended, and guidelines promulgated thereunder. Further, said Negative Declaration reflects the independent judgement of the City of Diamond Bar. 3. The Planning Commission hereby specifically finds and determines that, having considered the record as a whole, including the findings set forth below, and changes and alterations which have been incorporated into and conditioned upon the proposed project set forth in the application, there is no evidence before this Commission that the project as proposed by the Application, and conditioned for approval herein, will have the potential of an adverse effect on wildlife resources or the habitat upon which the wildlife t, depends. Based upon substantial evidence presented in the record before the Commission, the Commission hereby rebuts the presumption of adverse effect contained in section 753.5 (d) of Title 14 of the California Code of Regulations. 4. Based upon the findings and conclusions set forth herein, and in conformance with the terms and provisions of the California 'Government Code Section 65361, this Commission, hereby finds as follows: a) The project relates to a vacant lot of approximately 2.033 acres located within Gateway Corporate Center. The project site is within the Commercial -Manufacturing --Billboard Exclusion - Unilateral Contract (C--M-BE--U/C) Zone with a contemplated draft General Plan land use designation of Professional Office (OP). - The project site is located at 21671 E. Gateway Center Drive, City of Diamond Bar, California. b) Generally, the following zones and uses surround the project site: to the north is the Pomona Freeway and Orange Freeway interchange; to the east is the C-M-BE-U/C Zone and the Radisson Hotel; to the south and west is C-M-BE-U/C Zone. c) The project site is adequately served by Golden springs Drive and Copley Drive and by other public or private service facilities as are required. Development Review: d) The design and layout of the proposed project is consistent with the applicable elements of the city's contemplated draft General Plan, design guidelines of the appropriate district, and any adopted architectural criteria for specialized areas, such as designated historic districts, theme areas, specific plans, community plans, boulevards, or planned developments. e) The design and layout of the proposed project will not unreasonably interfere with the use and enjoyment of neighboring existing or future developments, and will not create traffic or pedestrian hazards. f) The architectural design of the proposed project is compatible with the character of- the surrounding neighborhood and will maintain the harmonious, orderly and attractive development contemplated by Development Review - Chapter 22.72 and the contemplated draft General Plan. g) The design of the proposed project would provide a desirable environment for its occupants and visiting public as well as its neighbors through good aesthetic use of materials, texture, and color that will remain aesthetically appealing and will retain a reasonably adequate level of maintenance. h) The proposed project will not be detrimental to the public health, safety or welfare, or materially injurious to the properties or improvements in the vicinity. Conditional Use Permit: i) The proposed project will not be in substantial conflict with the contemplated draft General Plan. j) The proposed project at the project site will not adversely affect the health, peace, comfort, or welfare of persons residing or working in the surrounding area or be materially detrimental to 3 the use, enjoyment, or valuation of property of other persons located in the vicinity of the site, or jeopardize, endanger, or otherwise constitute a menace to public health, safety, or general welfare. k) The project site is adequate in size and shape to accommodate the yards, walls, fences, parking and loading facilities, landscaping, and other development features prescribed within the Code, or as is otherwise required in order to integrate said use with the uses in the surrounding area. 1) The proposed project is located and designed so as to protect the safety of current and future community residents and .businesses, and will not create significant threats to life and/or property due to the presence of geologic, seismic, slope instability, fire, flood, mud flow, or erosion hazard. j) The proposed project is 'compatible with the natural, biotic, cultural, scenic, and open space resources of the area. k) The proposed project is conveniently served by neighborhood shopping and commercial facilities, can be provided with essential public services without imposing undue costs on the total community, and is consistent with the objectives and polices of the contemplated draft General Plan. 1) The proposed project demonstrates creative and imaginative design, resulting in a visual quality that will complement community character and benefit current and future community residents and businesses. 5. Based upon findings and conclusion set forth above, the Planning commission hereby approves this Application subject to the following conditions: a) The project shall substantially conform to all plans dated June 13, 1994, collectively labeled Exhibit "A" as submitted to and approved by the Planning Commission. b ) The project site shall be maintained in a condition which is free of debris, both during and after the construction, addition, or implementation of the entitlements granted herein. The removal of all trash, debris, and refuse, whether during or subsequent to construction, 4 shall be done only by the property owner, applicant, or by a duly permitted waste contractor who has been authorized by the City to provide collection, transportation, and disposal of solid waste from residential, commercial, construction, and industrial areas within the City. it shall be the applicant's obligation to insure that the waste contractor utilized has obtained permits from the City of Diamond Bar to provide such services. c) This project shall adhere to the Hillside Management Ordinance 1qo.7 (1992). d) Retaining walls shall not exceed six (6) feet in height. e) The unused western portion of the project site shall remain undeveloped 'and shall not be subdivided into an independent parcel for future development. f) This project shall comply with all state handicap and American Disabilities Act's requirements. g) This project shall provide glare shielded lighting within the parking lot area that maintains a minimum of one (1) lumen of light per square foot at ground level at any location in the parking lot area. A revised site plan shall be submitted, within 60 days of approval of this grant, indicating said lighting requirements for review and approval by the City. h) The applicant shall obtain required permits from South Coast Air Quality Management District SCAQMD) before the issuance of a Certificate of occupancy. i) The applicant shall comply with all requirements of the Los Angeles County Fire Department. j) The applicant shall obtain the written approval from Gateway Corporate Center architectural committee before the issuance of,any City permits. k) The restaurant structure shall not exceed an occupancy of 270 persons. 1) In order to incorporate two (2) balconies into the design of the restaurant structure, the applicant shall prepare a trip reduction plan for review and approval by the City before the issuance of any permits from the City. 5 m) The project shall maintain a minimum of 90 parking spaces. n) The restaurant shall not be open for business between the hours of 2 a.m. and 7 a.m. o) Live entertain shall be "minor" in nature, ancillary to the restaurant use, and limited to a small band, vocals, and dancing. p) All operations of.the restaurant and entertainment uses shall be subject to the provision of the City's Noise Ordinance. Individual entertainment shall be suspended should noise levels exceed the Noise Ordinance's limits. q) Security shall be provided from 10:00 P.M. until the last employee leaves after closing. r) The applicant shall submit, within 60 days of approval of this grant, landscape and irrigation plans for review and approval by the City which shall incorporate the following: (1) Ten (10) - 15 gallon trees .within the planter area along the east property line, adjacent to the Radisson Hotel site; (2) Seven (7) -- 15 gallon trees within diamond shape planter areas that will be located between two parking spaces which face each other; 3) Locate the proposed large trees, which shall be 24 inch box size, midpoint between the existing pine trees within the planter area adjacent to the sidewalk along Gateway Center Drive; (4) Define landscape limits and type of planting material to be utilized in an area between the main entrance and the service yard; (5) Planting materials utilized to landscape the unused western portion of the site and slope area shall match existing slopes' planting materials; (6) Names and sizes of all planting materials; and (7) Root barrier control boxes for each tree; (8) Up lighting for_ trees shall be utilized and incorporated into the design of the landscaping; (9) Vines shall be utilized adjacent to the retaining wall and the restaurant structure wall adjacent to the north property line to minimize architectural impacts. s) The lower portion of the large wall of the restaurant structure that is adjacent to the north property line shall be stuccoed in an earth tone color in order to minimize its architectural impact. t) The applicant shall provide a hydrology study and hydrology calculations showing the estimated run-- off capacity of the existing drainage system for review and approval by the City. If the existing drainage is inadequate, the applicant shall design an adequate drainage system to the satisfaction of s, the City Engineer. u) The applicant shall submit a Planned Sign Program for this project for review and approval by the Planning Commission before the issuance of any sign permits. v) Notwithstanding any previous subsection of this resolution, if the Department of Fish and Game requires payment of a fee pursuant to Section 711.4 of the Fish and Game Code, payment therefore shall be made by the applicant prior to the issuance of any building permit or any other entitlement. w) This grant shall not be effective for any purpose until the permittee and owner -of the property involved (if other than the permittee) have filed within fifteen (15) days of approval of this grant, at the City of Diamond Bar Community Development Department, their affidavit stating that they are aware of and agree to accept all the conditions of this grant. Further, - this grant x shall not be effective until the permittee pays r.; remaining Planning Division processing fees. x) The City reserves the right to review the Development Review and Conditional Use Permit, and - any amendment thereto at a public hearing, at any time and modify the conditions herein listed, as deemed appropriate. y) The subject property shall be maintained and operated in full compliance with the conditions of this grant and any law, statute, ordinance or other regulations applicable to any development or`" activity of the subject property. z) The Applicant shall comply. with Planning and zoning, Building and Safety, and Engineering requirements. This grant shall be valid for two (2) years and must be exercised (i.e. construction) within that period or this grant will expire. A one (1) year extension may be requestedin writing and submitted to the City 30 days prior to the expiration date of this grant. 7 The Planning Commission shall: a) Certify to the adoption of this Resolution; and b) Forthwith transmit a certified copy of this Resolution, by certified mail to, A. R. Leasing and investment Inc., 1135 S. Sunset Ave., West Covina; CA 91770.and-Dr. Akbar Omar, 2216 E. Merced, Covina, CA 91790. APPROVED AND ADOPTED F DIAMOND BAR. JUNE, 1994, BY THE PLANNING COMMISSION OF THECITY O d 7Mey , Chairman nni I, Robert Searcy, Acting Secretary do herebyf the certify that the foregoing Commission Of the City of DiamondBar, assed and adopted, at a regular Resolution was duly introduced, p , meeting of the Planning Commission held on the 13th day of June, 1994, by the following vote: COMMISSIONERS:) Meyer, Plunk, Schad, Fong, AYES' Flamenbaum COMMISSIONERS:] None NOES: ABSENT: COMMISSIONERS:] None ABSTAIN: COMMISSIONERS:} None STATE OF CALIFORY41A COUNTY OF LOS ANGEM so CITY OF DIAMOND BAIL I, LYNDA BURGESS, CITY CLERK OF THE CITY OF DIAMOND 1$AR, DO HEREBY CERTIFY UNDER PENALTY OF PERJURY UNDER THE LAWS OF THE ATTEST' v STATE OF CALIFORNIA THE FORGOING TO BE A Robert Sea , retarY FULL, ' RUE AND CORRECT COPY OF THE ORIGINAL AS SAME APPEARS ON FILE IN MY OFFICE. IN WITNESS WHEREOF, I HAVE HEREUNTO SET NjY HAND AND AFFIXED THE SEAL,OF THE CITY OF DrOND BAR, THIS r DAY L ' OFLYNDA BURGESS, CITY CLERK HAY D6puty 8 ORDINANCE NO. Ol (1993) AN ORDINANCE OF THE CITY COUNCIL OF THE CITYOFDIAMONDBARADDINGANEWCHAPTER22.78 TOTITLE22OFTHELOSANGELESCOUNTYCODEAS HERETOFORE ADOPTED BY REFERENCE PERTAINING TOTRIPREDUCTIONANDTRAVELDEMANDMEASURES A. Recitals. i) The Legislature of the State of California has found that the lack of an integrated transportation system and increases in the number of vehicles are causing traffic congestion that each day results in hundreds of thousands of hours lost in traffic, tons of pollutants released into the air and millions of dollars of added costs to the motoring public. The Legislature has adopted legislation requiring the preparation and implementation of a Congestion Management Program ("CMp") by county transportation commissions or other public agencies of every county that includes an urbanized area. iii) The Metropolitan Transportation Authority MTA") is responsible for the preparation of the CMP for Los Angeles County ("County"). iv) The CMP must contain a trip reduction and travel demand management element that promotes alternative transportation methods, such as carpools, vanpools, transit, bicycles, walking and park -and -ride lots, improvements in the balance between jobs and hou3ing, and other strategies, including flexible work hours, telecommunting and parking management programs. 1 v) The County and every city within the County is required by law to adopt and implement a Transportation Demand Management ('ITDM") ordinance as an important element of the Congestion Management Program to relieve congestion and improve air quality. vi) MTA must determine annually whether the County and cities within the County are conforming to the CMP, including the requirement to adopt and implement a TDM ordinance. vii) Because the CMP is an evolving program which will be developed incrementally, as experience is gained through its implementation, this TDM Ordinance may be amended or superseded from time to time, as necessary to meet congestion and air quality goals. viii) The State Clean Air Act requires regions to attain a 1.5 person per vehicle Occupancy rate during the commute period by the year 1999. ix) This Ordinance is intended to comply with the CMPIs requirements for a TDM ordinance. The requirements of South Coast Air Quality Management District ("District") Regulation XV are separate from this Ordinance, and administrated by the District. Nothing herein is intended, nor shall it be construed, to limit or otherwise preclude employers from offering or providing additional inducements to use alternatives to single -occupant vehicles to their employees necessary to meet Regulation XV requirements. 2 x) In order to use the existing And planned transportation infrastructure more efficiently, maintain or improve traffic levels of service, and lower motor vehicle emissions, it is the policy of the City of Diamond Bar to minimize the number of peak period vehicle trips generated by additional development, promote the use of alternative transportation, improve air quality and participate in regional and countywide efforts to improve transportation demand and management. xi) The Planning Commission of.the City of Diamond Bar conducted and concluded a duly noticed public hearing on the within Ordinance on February 22 1993 and recommended, by its Resolution No.pC3that this City Council adopt the within Ordinance. xii) This City Council, on Mar 7h 2 , , 1993, conducted a duly noticed public hearing as required by law on the within Ordinance and concluded said hearing prior to the adoption of this Ordinance. xiii) All legal prerequisites to this adoption of this Ordinance have occurred. B. NOW TSEREFORE, the City Council of the City of Diamond Bar does ordain as follows: Section . 1: In all respects as set forth in the Recitals, Part A, of this Ordinance. 3 ct'on 2: The City Council hereby finds that Negative Declaration No. A3-a has been prepared in compliance with the California Environmental Quality Act,of 1970, as amended, and the Guidelines promulgated thereunder, that said Negative Declaration and the Initial Study therefor reflect the independent judgment of the City of Diamond Bar, and further, this City Council has reviewed and considered the information contained in said Negative Declaration No. 93-4 with respect to the Ordinance set forth herein. gction _J: The City Council hereby specifically finds and determines that, based upon the findings set forth below, and changes and alterations which have been incorporated into the proposed ordinance, no significant adverse environmental effects ' will occur. agCt = 4: The City Council finds that facts supporting the above -specified findings are contained in the Negative Declaration, the staff report and exhibits, and the information provided to this City Council during the public hearing conducted with respect to the Ordinance and the Negative Declaration, S6cti00 A: Pursuant to the provisions of § 753.5(c) of Title 14 of the California Code of Regulations, the City Council finds as follows: In considering the record as a whole, the Initial Study and Negative Declaration No. 93_4 there is no evidence before this City Council that the proposed Ordinance will have potential for an adverse impact on wildlife 4 resources or the habitat upon which wildlife depends. Further, based upon substantial evidence contained in the Negative Declaration, the staff report and exhibits, and the information provided to the City Council during the public hearing, this City Council hereby rebuts the presumption of adverse effect as set forth in § 753.5(c-1-d) of Title 14 of the California Code of Regulations. Section A new Chapter 22.78 hereby is added to Title 22 of the Los Angeles County Code as heretofore adopted by reference to read, in words and figures, as follows: CHAPTER 22.78 TRIP REDUCTION AND TRAVISL DZXAND XZASUREs 11sections : 1122.78.010 Definitions 1122.78.020 Review of Transit Impacts 1122.78.030 Transportation Demand and TripReductionMeasures 1122.78.040 Monitoring 1122.78.050 Penalties for Violation of Chapter 22.78.050. Civil Remedies Available 22.78.070 Severability Section 22.78.010. DEFINITIONS The following words or phrases shall have the following meanings when used in this Chapter: A. `Alternative Transportation' means the use of modes of transportation other than the single 5 passenger motor vehicle, including, but not limited to, carpools, vanpools, buspools, public transit, walking and bicycling. Applicable Development' means any development project that is determined to meet or exceed the project size threshold criteria contained in Section 22.78.030. C. `Buspool' means a vehicle carrying sixteen (16) or more passengers commuting on a regular basis to and from work with a fixed route, according to a fixed schedule. D. 'Carpool' means a vehicle carrying two (2) to six 6) persons commuting together to and from work on , a regular basis. E. 'The California Environmental Quality Act (CEQA)' means the provisions of California Public Resources Code g§ 21000, et seq., and the Guidelines promulgated thereunder (Division 6 of Title 14 of the California Code of Regulations). OF. 'Developer' shall mean the builder who is responsible for the planning, design and construction of an applicable development project. A developer may be responsible for implementing the provisions of this Chapter as determined by the property owner. C G• 'Development' means the construction or addition of new building square footage. Additions to buildings which existed prior to the adoption of this chapter and which exceed the thresholds defined in Section 22.78.030 shall comply with the applicable requirements but shall not be added cumulatively with existing square footage; existing square footage shall be exempt from these requirements. All calculations shall be based on gross square footage. H. 'Employee Parking Area' means the portion of total required parking at a development used by onsite employees. Unless otherwise specified in the Zoning Code, employee parking shall be calculated as follows: to Percent of Total Required Y44 Parking 'Devo&ed _2 EM2j_qyees Commercial 30% Office/Professional 85% Industrial/Manufacturing 90% I. 'Preferential Parking' means parking spaces designated or assigned, through use of a sign or painted space markings for carpool and vanpool vehicles carrying commute passengers on a regular basis that are provided in a location more i] convenient to a place of employment than parking spaces provided for single occupant vehicles. J. 'Property Owner' means the legal owner of'a development who serves as the lessor to a tenant. The property owner shall be responsible for complying with the provisions of the ordinance either directly or by delegating such responsibility as appropriate to a tenant and/or agent. K• 'South coast Air Quality Management District SCAQMD)' is the regional authority appointed by the California State Legislature to -meet federal standards and otherwise improve air quality in the . South Coast Air Basin (the non -desert portions of Los Angeles, Orange, Riverside, and San Bernardino Counties.) L• 'Tenant' means the lessee of facility space at an applicable development project. M. 'Transportation Demand Management (TDM)' means the alteration of travel behavior -- usually on the part of commuters -- through programs of incentives, services, and policies. TDM addresses alternatives to single occupant vehicles such as carpooling and vanpooling, and changes in work schedules that move trips out of the peak period 8 or eliminate them altogether (as is the case in telecommunting or compressed work weeks). N• 'Trip Reduction' means reduction in the number of work -related trips made by single occupant vehicles. 19 0. 'Vanpool' means a vehicle carrying seven or more persons commuting together to and from work on a regular basis, usually in a vehicle with a seating arrangement designed to carry seven (7) to fifteen 15) adult passengers, and on a prepaid subscription basis. P. 'Vehicle' means any motorized form of transportation, including but not limited to automobiles, vans, buses and motorcycles. Section 22.78.020. REVIEW OF TRANSIT IMPACTS All development projects for which an Environmental Impact Report (EIR) is required to be prepared shall be subject to the Land Use Analysis Program contained in the Los Angeles County Congestion Management Program (CMP), and shall incorporate into the EIR an analysis of the projects iapeats on the regional transportation system. Said analysis shall be conducted consistent with the Transportation Impact Analysis (TIA) Guidelines contained in the most recent Congestion Management Program adopted by the Los Angeles County Metropolitan Transportation Authority. 9 Prior to approval of any development project for which an Environmental Impact Report (EIR) will be prepared pursuant to or based on a local determination, regional and municipal fixed -route transit operators providing service to the project shall be identified and consulted with. Projects for which a Notice of Preparation (NOP) for a Draft EIR has been circulated pursuant to the provisions of CEQA prior to the effective date of this ordinance shall be exempted from its provisions. Thy Worksheet', contained in the Los Angeles County Congestion Management Program Manual, or similar worksheets, shall be used in assessing impacts. Pursuant to the provisions of CEQA, transit operators shall be sent an NOP for all . contemplated EIR's and shall, as part of the NOP process, be given opportunity to comment on the impacts of the project, to identify recommended transit service or capital improvements which may be required as a result of the project, and to recommend mitigation measures which minimize automobile trips on the CMP network. Impacts and recommended mitigation measures identified by the transit OPG=tor shall be evaluated in the Draft Environmental Report prepared for the project. Related mitigation measures adopted shall be monitored through the mitigation monitoring requirements of CEQA. Phased development projects, development projects subject to a development agreement, or development projects 10 requiring subsequent approvals, need not repeat this process as long as no significant changes are made in the project. It shall remain the discretion of the lead agency to determine when a project is substantially the same and therefore covered by a previously certified EIR. Section 22.78.030. TRANSPORTATION DEMAND AND TRIP REDUCTION MEASURES A. Applicability of Requirements Prior to approval of any development project, the applicant shall make provision for, at a minimum, all of the following applicable transportation demand management and trip reduction measures. This Chapter shall not apply to projects for which a development application has been deemed "complete" by the City pursuant to California Government Code $ 65943, or for which a Notice of Preparation for a DEIR has been circulated or for which an application for a building permit has been received, prior to the effective date of this Chapter. All facilities and improvements constructed or otherwise required shall be maintained in a state of good repair. B. Development Standards 1. Non -Residential development of 25,006 square feet or more shall provide the following to the statisfaction of the City: 11 a) A bulletin board, display case, or kiosk displaying transportation information located where the greatest number of employees are likely to see it. Information in the area shall include, but is not limited to, the following: 1) Current maps, routes and schedules for public transit routes serving the site; 2) Telephone numbers for referrals on transportation information including numbers for the regional ridesharing agency and local transit operators; 3) Ridesharing promotional material supplied by commuter -oriented organizations; 4) Bicycle route and facility information, ! including regional/local bicycle maps and bicycle safety information; 5) A listing of facilities available at the site for carpoolers, vanpoolers, bicyclists, transit riders and pedestrians. 112. Non -Residential development of 50,00o square feet or more shall comply with Section 22.78.030 B.1, above, and shall provide all of the following measures to the satisfaction of the City: a) Not less than 10* of employee parking area(s), shall be located as close as is practical to the employee entrance(s), and shall be reserved for use by potential carpool/vanpool vehicles, without displacing 12 handicapped and customer parking needs. This preferential carpool/vanpool parking area shall be identified on the site plan upon application for building permit, to the satisfaction of City. A statement that preferential carpool/vanpool spaces for employees are available and a description of the method for obtaining access to such spaces must be included on the required transportation information board. Spaces will be signed/striped as demand warrants; provided that at all times at least one space for projects of 50,000 square feet to 100,000 square feet and two spaces for projects over 100,000 square feet will be signed/striped for carpool/vanpool vehicles. b) Preferential parking spaces reserved for vanpools must be accessible to vanpool vehicles. When located within a parking structure, a minimum vertical interior clearance of 71211 shall be provided for such spaces and accessways to be used by such`vehicles. Adequate turning radii and parking space dimensions shall also be included in vanpool parking areas. c) Bicycle racks or other secure bicycle parking shall be provided to accommodate 4 bicycles per the first 50,000 square feet of non-residential development and 1 bicycle per each additional 50,000 square feet of non- residential development. Calculations which result in a fraction of 0.5 or higher shall be rounded up to the nearest whole number. A bicycle parking facility may also be a 13 fully enclosed space or locker accessible only to the owner or user of the bicycle, which protects the bicycle from inclement weather. Specific facilities and location (e.g., provision of racks, lockers, or locked room) shall be to the satisfaction of the City. 113. Non -Residential development of 100,000 square feet or more shall comply with Sections 22.78.030 B.1 and B.2 above, and shall provide all of the following measures to the satisfaction of the City: a) A safe and convenient zone in which vanpool and carpool vehicles may deliver or board their passengers. b) Sidewalks or other designated -pathways _ following direct and safe routes from the external , pedestrian circulation system to each building in the development. c) If determined necessary by the City to mitigate the project impact, bus stop improvements must be provided. The City will consult with the local bus service providers in determining appropriate improvements. when locating bus stops and/or planning building entrances, entrances must be designed to provide safe and efficient access to nearby transit stations/stops. d) Safe and convenient access from'the external circulation system to bicycle parking facilities onsite. 14 Section 22.78.040. MONITORING The City shall ensure compliance with the measures required by this Chapter during project implementation. The project applicant shall demonstrate compliance with each measure in a written report submitted to the City prior to the issuance of building permit and show compliance prior to issuance of certificate of occupancy. As applicable, applicants may be required to provide periodic reports regarding compliance with such measures. Section 22.78.050. PENALTIES FOR VIOLATION OF CHAPTER It shall be unlawful for any person, firm, partnership, or corporation to violate any provision or to fail to comply with any of the requirements of this Chapter. Any person, firm, partnership or corporation violating any provisions of this Chapter or failing to comply with any of its requirements shall be deemed guilty of a misdemeanor and upon conviction thereof shall be punished by a fine not exceeding One Thousand Dollars ($1,000.00), or by imprisonment not exceeding six (b) months, or by both such fine and imprisonment. Each and every person, firm, partnership, or corporation shall be deemed guilty of a separate offense for each and every day or any portion thereof during which any violation of any of the provisions of this Chapter is committed, continued or permitted by such person, firm, partnership or corporation, and shall be deemed punishable therefor as provided in this Chapter. 15 Section 22.78.060. CIVIL REMEDIES AVAILABLE The violation of any of the provisions of this Chapter shall constitute a nuisance and may be abated by the City through civil process by means of restraining order, Preliminary or permanent injunction or in any other manner provided by law for the abatement of such nuisances. Section 22.78.070. SEVRRARTT.Tmv The City Council declares that, should any provision, section, paragaraph, sentence or word of this Chapter be rendered or declared invalid by any final court action in a court of competent jurisdiction, or by reason of any preemptive legislation, the remaining provisions, sections, paragraphs, sentences and words of this Chapter shall remain in full force and effect." A=1 n Z: The City Clerk shall certify to the adoption of this Ordinance and shall cause the same to be posted in three (3) public places within the City of Diamond Bar pursuant to the provisions of Resolution No. 89-6B. ADOPTED AND APPROVED this 16th day of March t Mayor 16 I, LYNDA BURGESS, City Clerk of the City of Diamond Bar, do hereby certify that the foregoing Ordinance was introduced at a regular meeting of the City Council of the City of Diamond Bar held on the -2nd day of March 1993, and was finally adopted at a regular meeting of the City Council of the City of Diamond Bar held on the i+h+h day of lMarch 1993, by the following vote: AYES: COUNCIL MEMBERS: Forbing, MacBride, Werner, NOES: Mayor Pro Tem Papen, Mayor MillerCOUNCILMEMBERS: None ABSENT: COUNCIL MEMBERS: None ABSTAINED: COUNCIL MEMBERS: None ATTEST: Vlerkity of theCi:y ` Diamond Bar of 01011 WIMADDzz. 78WO e. s. t 17 ORDINANCE NO. 5 (1990) AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF DIAMOND BAR ADDING A NEW CHAPTER 22.72 TO TITLE 22-OF THE LOS ANGELES COUNTY CODE, A5 HERETOFORE ADOPTED, PERTAINING TO DEVELOPMENT REVIEW AND REPEALING ORDINANCES NOS. 11(1989), IIA(1989), 15(1989) AND 15A(1989) AS HERETOFORE ADOPTED. A. Recitals. i) On March 12, 1990, the Planning Commission of the City of Diamond Bar conducted a duly noticed public hearing, as required by -law, -pertaining to.the establishment of a Development Review Procedure for specified projects within the City, as set forth -in Exhibit "A", attached hereto and incorporated by this reference as though fully set forth herein. ii) Upon conclusion of the hearing described in paragraph A.(i), above, the Planning Commission adopted its Resolution No. PC 90 3 , recommending to this Council the adoption of the amendment to the Los Angeles County Code, as heretofore adopted, set forth in Exhibit "A". iii) On March 20, 1990, this City Council conducted and concluded a duly noticed public hearing, as required by law, concerning the amendment to the Los Angeles County Code, as heretofore adapted, set forth in Exhibit "A". iv) All legal prerequisites to the adoption of this Ordinance have occurred. B. Ordinance. NOW, THEREFORE, the City Council of the City of Diamond Bar does hereby find, determine and ordain as follows: A Section. is In all respects as set forth in the Recitals, Part A., of this Ordinance. section 2: The City Council hereby finds and determines that it can be seen with certainty that adoption of this Ordinance cannot have a significant effect on the environment and,'therefore,.adoption hereof is not subject to the requirements of the provisions of the California Environmental Quality Act pursuant to Section 15061(b)(3) of Division 6 of Title 4 of the California Code of Regulations. Section 3: immediately upon this Ordinance becoming effective, Ordinances No. 11.(1939) and 15(1989}, as amended and the effect thereof extended by Ordinances No. 11A(190'9) and 15A(1989), respectively, shall -be repealed and and of no further force and effect. Notwithstanding the above provisions of this Section 3, any application filed on or after January 1, 1990 pursuant to the requirements of Ordinance 11(1989), 11A(1989), 15(1.989) and 15A(1989), or any of them, shall be deemed to be an application for development review hereunder and the proponent thereof shall be required to comply with the requirements of this Ordinance. Section 4: A new Chapter 22.72 hereby is added to Title 22 of the Los Angeles -County Code, as -heretofore adopted, to read, in words and figures, as set forth in Exhibit "A" hereto which, by this reference, is incorporated as though fully set forth herein. 2 Section S: The City Clerk shall certify 'to the adoption of this Ordinance and shall.cause the same to be posted in three (3) public places within the City of Diamond bar. pursuant to the provisions of Resolution 89-6. ADOPTED AND APPROVED -this 3rd day of April , 1990. Mayor I, LYNDA BURGESS, City Clerk of the City of Diamond Bar, do hereb•; that the foregoing Ordinance was introduced at a regular meeting of the City Council of the City of Diamond Bar held on the 20th day of March , 1990, and was finally passed at a regular meeting of the City Council of the City of Diamond bar held on the 3rd day of April , 1990, by the following vote: AXES: -UNCIL MEMBERS: Horcher, Forbing, Miller, Mayor Pro Teen Werner, Mayor Papen NOES: COUNCIL MEMBERS: None ABSENT: COUNCIL MEMBERS: None ABSTAINED: COUNCIL MEMBERS: None ATTEST: L 11r; cz, City' -Clerk; City of Diamo.rad Bar L1loll 1011nF221Dg 1.38 3 Charter'22.72 DEVELOPMENT REVIEW 22.72.010 Purpose and Intent. A. This Chapter establishes the review procedures for residential, commercial, industrial, and institutional development proposals to facilitate project development review in a timely and efficient. manner; to ensure that development projects comply with all applicable local design guidelines, standards, and ordinances; to minimize adverse effects on surrounding properties and the environment; and are consistent with the general plan which promotes high aesthetic and functional standards to complement and add to the physical, economic, and social character of'Diamond Bar. B. The City finds that development review process will support the implementation of the general plan, 'as it stresses quality community design standards. The City further finds that the quality of residential, institutional, commercial, and industrial uses has a substantial impact upon the visual appeal, environmental soundness, economic stability, and property values of the City.- This Chapter is not intended to restrict imagination, innovation or variety, but rather to focus on community design principles which can result in creative, imaginative solutions for the project and a quality design for the City. It is, therefore, the purpose of this Chapter to: 1) Recognize the interdependence of land values and aesthetics and provide a method by which'the City may implement this interdependence to its benefit; 2) Encourage the orderly and harmonious appearance of structures and property within the City along with associated facilities,' such as signs, landscaping, parking areas, and streets; 3) Maintain the public health, safety and general welfare, and property throughout the City; 4) Assist developments to be more cognizant of public concerns for the aesthetics of development; 5) Reasonably ensure that new developments, including residential, institutional, commercial and industrial developments, do not have an adverse aesthetic, health, safety or architecturally related impact upon existing adjoining properties, or the City in general; 1 r 6) Implement those sections of the City's general plan for the preservation and enhancement of the character and unique assets of the City and its harmonious development; 7) Minimizing the effects -of grading by discouraging mass grading and excessive slopes to ensure that the natural character of terrain is retained; 8) Preserving significant topographic features, including rock outcroppings, native plant materials and natural hydrology while also encouraging improved drainage from lots directly to a street, storm drain, or through public or privately maintained easement; 9) Limiting the impact of slopes on adjacent developed properties and limit construction on identified seismic or geologic hazard areas; 10) Encouraging the use of a variety of housing styles, split-level grading techniques, varied lot sizes, site design densities, maintenance of views and arrangement and spacing to accomplish grading policies; 11) To encourage ordarly development of residences within areas more readily served by public services; 12)• To encourage the development of master planned projects which provide the service needs of the residents or those projects; 13) To encourage use of energy conservation techniques in new developments. 22.72.020 Projects Requiring Development Review. A. An application for Development Review is required for any and all commercial, industrial, institutional development, and any residential project which proposes five dwelling units or more (detached or attached) and which involve the issuance of a building permit for construction or reconstruction of a structure(s) which meets the following criteria: 1) New construction on vacant property; 2) Structural additions or new buildings which are .equal to fifty percent of the floor area of existing on -site building(s), or have a minimum ten thousand square feet in gross floor area; 2 3) Reconstruction projects which are equal to fifty percent of the floor area of existing on --site building(s), or have a minimum ten thousand square feet in gross floor area; 4) Projects involving a substantial change or intensification of land use, such as the. conversion of an existing building to a restaurant, or the conversion of a residential structure to an office or commercial use. B. Projects of a limited size and scope which do not meet the above criteria shall require an application for. Administrative Development Review pursuant to Section 22.72.060. C. Residential construction involving four or less dwelling units are subject to Administrative Development Review pursuant to section 22.72.060. 22.72.030 Development Review Annlication. All Development Review applications shall contain the following information: A. A detailed .plot plan showing- 1) Dimensions and orientation of the parcel to scale); ` 2) Location of buildings, structures, and signs, both existing and proposed; 3) Location of eave overhang and architectural features; 4) Location of landscaping and irrigation, both existing and proposed. B. All building elevations, including signs thereon; C. Indication of the types and colors of all exterior construction materials; D. Location of all walls and fences, their height and materials of construction; E. Copies of any and all CC&R's applicable to the development or use of the land; and F. Any other architectural and engineering data as may be required to permit a complete investigation of the proposal,.. 3 22,72.040 Development Review Authority. The Planning Commission is authorized'toapprove or deny Development Review applications and to impose reasonable conditions upon such approval, subject to the right of appeal to the City Council. conditions may include, but shall not be limited to, requirements for open spaces, screening and buffering of adjacent properties, fences, and walls; requirements for installation and maintenance of landscaping and erosion control measures; requirements for street improvements and dedications, regulation of vehicular ingress and egress, and traffic circulation; regulation of signs; regulation of hours or other characteristics of operation; requirements for maintenance of landscaping and other improvements; establishment of development schedules or time limits for performance or completion; and such other conditions as the commission may deem necessary to ensure compatibility with surrounding uses, to preserve the public health, safety, and welfare, and to enable the Planning Commission to raking the findings required by section 2.2.72.140. 22.72.050 Administrative Development Review Authority. Development Review applications which do not meet the requirements of Section 22.72.020.A shall be subject to review and approval by the Planning Director. If, in the opinion of the Planning Director, the application involves unusual situ development requirements or unique operating characteristics, or raises questions of develop-,-ent policy substantially more significant than generally pertain to applications for Administrative Develonment Review and which require Planning commission consideration, the Planning Director shall refer the application to the planning commission for review. The. Planning Director is authorized to approve or deny Administrative Development Review applications. and to impose reasonable conditions upon such approval subject to the right of appeal to the Planning Commission. 'Conditions may include, but shall not be limited to; requirements for open spaces, screening and buffering of adjacent properties, fences and walls; requirements for installation and maintenance of landscaping and erosion control measures; requirements for street improvements and dedications, regulation of v_hicular ingress, egress, and traffic circulation,• regulation of signs; regulation of hours or other characteristics -of operation; requirements for maintenance of landscaping and other improvements;establishment of development schedules or tine limits for performance of completion; and such other conditions as the Planning Director may deem necessary to insure compatibility with surrounding uses, to preserve the public health, safety, and welfare, and to enable the Planning Director to make the findings required by section 22.72.140. 4 22.72.060 Administrative Development Review Procedure. A. Applications for Administrative Development Review shall be filed by the owner or owners of the property for which approval is sought,- or by the authorized agent thereof. Application shall be made to the Director on forms furnished by the City. The application shall be accompanied by the materials and information required in Section 22.72.030 at the time of application and a filing fee shall be paid for the purpose of defraying the costs incidental to the proceedings. Appropriate fees shall be determined by City Council Resolution. B. The Planning Director shall make an investigation of the facts bearing on the case to provide the information necessary f or the action consistent with the intent of this Chapter and the General Plan. e. Notice of hearings - Notice of public hearing shall contain the time and place of the hearing and the location and proposed use or uses of the subject property. Notice shall be mailed or delivered not less than. ten (10) calendar days prior to the hearing to the applicant and to all owners' of property within three hundred (300) feet of the exterior boundaries of the real property under consideration, utilizing the names and addresses of such owners as shown upon the latest equalized assessment roll of the County. Assessor of Los Angeles County. 22.72.070 Administrative Development Review. Review and analysis by the Director will consider design elements, such as, but not li-mited to, comnatibility of the project to surrounding properties; relationship of the design and layout of the project to the site; architectural design and us-e of materials; grading; landscaping; screening and buffering techniques,of adjacent properties; signs; and open space. The Director will determine if the project adequately Teets applicable design guidelines and standards. 22.72.080 Director's Action and Anneal Procedures. Upon completion of the public hearing, the Director may approve, conditionally approve, or deny the application and shall announce and record his decision within 21 calendar days following the conclusion of the public hearing. The decision shall set forth the findings required in section 22.72.140, hereof, by formal resolution of the Director and shall be filed with the Planning Commission. A copy of the resolution shall be mailed to the applicant. 9 The decision of the Director shall be final and shall become effective 10 calendar days after* the adoption of the resolution by the Director; provided, however, that if within such 10 day period, an appeal of the decision is filed by an aggrieved person within the three hundred foot noticing radius, the applicant or City Council Member, the filing of such appeal within such time limit shall suspend.the decision of the Director until the determination of the appeal by the Planning. Commission or its dismissal by the appellant. Such appeal shall be filed in writing with the Secretary to the Planning Commission on forms furnished by the Secretary to the Planning Commission. 22.72.090 Appeal to the Plannina Commission. A. Upon receipt of an appeal from the Director's decision under Section 22.72.080, a hearing date'shall be set by the Secretary to the Planning Commission. Notice of hearing shall be given as provided in Section 22.72.060.0 and the appeal shall be conducted in the same manner as prescribed for Development Review in Section 22.72.110, hereof. B. The Director shall.transmit to the Planning Commission the original application, records, written reports, and Director Resolution disclosing in what respect the application and facts offered in support thereof met or failed to meet the requirements of this Chapter.` C. The Planning Commission may, by resolution, affirm, reverse, or modify in whole. or in part any appealed decision,- e ermination or requirement of the Director, but before granting any appealed petition which was denied by the Director or before changing any of the conditions imposed by the Director, the Planning Commission shall make a written finding of facts setting forth wherein the Director's findings were in error -and wherein the property or particular use involved meets or does not meet - the requirements of this Chapter. D. The decision of the Planning Commission shall be final and shall become effective 10 calendar days after the adoption of the resolution by the Commission; provided, however, that if within such 10 day period, an appeal of the decision is filed by an aggrieved person within three hundred foot noticing radius, the applicant or the City Council Member, the filing of such appeal within such time limit shall suspend the decision of the Planning Commission until the deter:,iin.ation of. the appeal by the City Council or its dismissal by the appellant. Such appeal shall be filed in writing with the city Clerk on forms furnished by said Clerk. 0 22.72.3-00 Appeal to City Council. A.' Upon receipt of an appeal from the Planning Commission's decision under Section 22.72.090, a hearing date shall be set by the City Clerk. Notice of hearing shall be given as provided in section 22.72.060.0 and the appeal shall beconductedinthesamemannerasprescribedforDevelopment Review in Section 22.72.110, hereof. B. The Planning Commission shall transmit to the city Council the original application, records, written .reports, Director Resolution, Planning Commission minutes and Resolution disclosing in what respect the application and facts offered in support thereof met or failed to meet the requirements of this Chapter. C. -The City Ca_ncil may, by resolution, affirm, reverse, or modify in wholie or in part any appealed decision, determination or requirement of the Planning Commission, but before granting any appealed petition which was denied by the' Planning Commission or before changing any of the conditions imposed by the Planning Commission, the City Council shall make a written finding of facts setting forth wherein the Commission's findings were in error and wherein the property or particular use involved meets or does not meet the requirements of this Chapter. D. The decision of the City Council shall be final and shall become effective upon adoption of the resolution by the City Council. 22.72.110 Development Review Procedure. A. Applications for Development Review shall be filed. by the owner or owners of the property for which approval is sought or by the authorized agent thereof. Application shall be made to the Director on forms furnished by the City. The application shall be accompanied by the materials and information required in Section 22.72.030 at the time of application and a filing fee shall be paid for the purpose of defraying the costs incidental to the proceedings. Appropriate fees shall be determined by City Council Resolution. B. The Planning Director shall make an investigation of the facts bearing on the case to provide the information necessary for action consistent with the intent of this Chapter and the General Plan. 7 i C. Notice of hearings -- Notice of public hearing shall contain the time and place of the hearing and the location and proposed use or uses of the subject property. •Notice shall be given in accordance with the requirements of California Government Code Section 650.90. 22.72.120 Development Review. Review and analysis by the Planning Commission will consider design elements, such as, but not limited to, compatibility of the project to surrounding properties; relationship of the design and layout of the project to the site; architectural design and use of materials; grading; landscaping; screening and buffering techniques of adjacent properties; signs;Land open space. The Commission will determine if the project adequately meets applicable design guidelines and standards. 22.72.' Commission Action and Anneal Procedures. Upon completion _ .he public hearing, the Planning Commission may approve, ccnc:,_ionally approve or deny the application and shall announce and record its decision within thirty,(30) calendar days following the conclusion of the public hearing. The decision of the Planning Commission shall set forth the findings required by _ Section 22.72.140, hereof, by formal resolution. A copy of the resolution shall be nailed to the applicant. The decision of the Planning Commission shall be final and shall become effective 10 days after the adoption of the resolution by the Planning Commission, provided, however, that if within such 10-^av period, an appeal of the decision is filed by an aggriev r within the three hundred foot noticing radius, t - or City Council Member, the filing of such' appeal within such Li;,se limit shall suspend the decision of the Planning Commission until the determination of the appeal by the City Council or its dismissal by the appellant. Such appeal shall be filed in writing with the City Clerk on fouls furnished by the City Clerk. The appeal shall be conducted pursuant to Section 22.72.100 and -notice of hearings shall be given as required by Section 22.72.110.C. 22.72.140 Findinas Required. in approving c-- conditionally approving a Development Review Application or Adninistrative Development Review Application, the City Council, the Planning Commission or Planning Director, as the case may. be, shall make the following findings: A. The design and layout of the proposed development is consistent with the applicable elements of the City's general plan, design guidelines of the.appropriate district, and any 8 adopted architectural criteria for specialized area, such as designated historic districts, theme areas, specific plans, community plans, boulevards, or planned developments; B. -The design and layout of the proposed development will not unreasonably interfere with the use and enjoyment of neighboring existing or future developments, and will not create traffic or pedestrian hazards; C. The architectural design of the proposed development is compatible with the -character of the surrounding neighborhood and will maintain the harmonious, orderly and attractive development contemplated by this Chapter and the general plan of the City; D. The design of the proposed development would provide a desirable environment for its occupants and visiting public a-s well as its neighbors throuch good aesthetic use of materials, texture and color that will remain aesthetically appealing and will retain a reasonably adequate level of maintenance. E. The proposed development will not be detrimental to the public health,- safety or welfare or materially injurious to the properties or improvements in the vicinity. 22.72.150 New Applications Followinq Denial. Following denial of a Development Review Application,or Administrative Development Review Application, no application for the same or substantially the same project for substantially the same site shall be accepted for filing within one (1) year from the effective date of such denial. 22.72.160 Time Limits. A. Each application hereafter approved or conditionally approved shall automatically expire and be of no further force or effect if not exercised within one (1) year of its effective date, unless the approval therefor specifies a longer period; provided that the Planning Commission, subject to appeal to•the Council in the same manner and time as with the permit itself, may extend any such approval for two (2) successive periods not to exceed six (6),months each, upon showing of good cause therefore, if written application for such extension is filed fourteen (14) working days prior to the expiration thereof. 9 B. "Exercise" shall mean substantial construction work pursuant to a building permit, and shall not include preparation of plans, engineering work or grading. In case of any dispute thereon, the' applicant or successor in interest may request in writing that the Planning Commission conduct a hearing of which the requesting party shall be given ten (10) calendar days written notice by first class mail directed to the address of the requesting party given in such written request for hearing. The decision of the Planning Commission may be appealed to the City council by the requesting party or any Councilmember, which shall upon the sane written notice, conduct a hearing. The decision of the Planning Commission, or of the Council, as the case may be, shall be final and conclusive. 22.72.170 Revisions to Anproved konlication A. Minor revisions to a project approved pursuant to this Chapter may be after review and approval by the Director. Minor revis-.,:,s are hereby defined as revisions which in no way change the requirements or conditions imposed on the original approval nor violate the intent ofany of the standards or conditions of the approval or of the zone. All approved minor revisions shall be reported, in writing, to the Planning commission at its next regular meeting. B. Revisions other than minor revisions,as defined above, shall be made pursuant to the procedures set forth in this Chapter.. C. All copies of the approved revised project shall be dated and 'signed by the. Director and made a part of the record of the pro;ec-. One cony of said approved revisions shall be mailed to z;_e-c olicant. 22.72.180 Revocation. Any approval granted pursuant to this Chapter shall be revoked upon a finding that one or more of the following conditions exist: A_ That the approval was obtained by fraud; B. That the structure or project for which the permit was granted has ceased to exist, or construction thereof has been suspended .for six (6) months or more; C. -.-.at the applicant has not complied with one or more of the conuizions or approval. 10 Any such finding shall be made by the Planning Commission after a public hearing of which notice shall be given pursuant to Section 22.72.060.0 in the case of an Administrative Development Review approved or by Section 22.72.110,C for all other approvals. Said finding of the Commission and its. determination pursuant thereto shall be subject to appeal by any interested person, including any Council Member, in the same manner and within the same time as provided in Section 22.72.130, to the Council, which shall upon the same written notice, conduct a hearing, notice of which shall be provided as set forth in this Section. The decision of the Planning Commission, or of the Council, as the case may be, shall be final and conclusive. Action of the -Planning Commission, or of the Council, shall be by resolution, shall contain specific findings, and specific action relative to revocation. Notwithstanding anything in this Section 'contained, the Commission, or the Council, as the case may be, with respect to any ground of revocation coming within 3 or C above, may grant a period of time within which the approval may be reactivated, or within which non-compliance with conditions may be remedied. in such event, the resolution shall be considered interlocutory, and the hearing shall be continued automatically, without further notice, to the first regular meeting of the,body adopting. the resolution following such extended date or dates set for full compliance. Thereupon by further resolution, the body theretofore otherwise finally acting shall take final action with respect thereto. 22.72.190 Penalties for Violation of Chapter. It shall be unlawful for any person, firm, partnership, or corporation to violate any provision or to fail to comply with any of the requirements of this Chapter. Any person, firm, partnership or! corporation violating any provision of this Chapter or failing to comply with any .of its requirements shall be deemed guilty of a misdemeanor and, upon conviction thereof, shall be punished by a fine not exceeding one Thousand Dollars ($?,000.00), or by imprisonment not exceeding six (6) months, or by both such fine and imprisonment. Each such person, firm, partnership or corporation shall be deemed guilty of a separate offense for each and every day or any portion thereof during which any violation of any o-f the provisions of this Chapter is committed, continued, or permitted to continue by such person, firm, partnership or. corporation and shall be deemed punishable therefor as provided herein. 22.72.200. Civil Remedies Available. The violation of any of the provisions of this Chapter shall constitute a nuisance and may be abated by the City through civil process by means of a restraining order, preliminary or permanent injunction, or in 'any other manner provided by law for the abatement of such nuisance_ 22.72.210. Severability. The City Council declares that, should any provision, section, paragraph, sentence or word of this Chapter rendered or declared.invalid by any final court action in a court of competent jurisdiction or by reason of any preemptive legislation, the remaining provisions, sections, paragraphs, sentences or words of this Chapter shall remain in full force and effect. L\1011NCODEIDB 6.6 12 Vi L,e-. RESOLUTION NO. PC 90- A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF DIAMOND BAR RECOMMENDING THE APPROVAL OF A MITIGATED NE- GATIVE DECLARATION AND TENTATIVE PARCEL MAP (TMP 22178) FOR TWELVE LOTS ON 13.35 ACRES LOCATED: 21660 EAST GATE- WAY CENTER DRIVE. A. Recitals i) Zelman Development Company on behalf of Diamond Bar Business Association, Los Angeles California, has heretofore filed an application for approval of a vesting Parcel Map (TPM 22178) as described in the title of this Resolution. Hereinafter in this Resolution, the subject vesting Parcel Map is referred to as "the application". On August 27, '1990, the Planning Commission of the City of Diamond Bar, conducted a duly noticed public hearing on the application and concluded said public hearing on that date. iii) All legal prerequisites to the adoption of this Resolution have occurred, which include recommended changes in the Re- solution adopted by the City Council of Diamond Bar on Octo- ber 171 1989, W89-104 entitled "A Resolution of the City Council of Diamond Bar ratifying and re -confirming the de- sign guidelines applicable to the Gateway Corporate Center. B. Resolution NOW, THEREFORE, it is found determined and resolved by the Planning Commission of the City of Diamond Bar as follows: 1. This Planning Commission hereby specifically finds that all of the facts set forth in the Recitals, Part A, of this Resolution are true 4nd correct. 2. Based upon substantial evidence presented to this Commission during the above referenced public hearing which was conti- nued to August 27, 1990, and again to September 10, 1990, including written and oral staff reports, together with public testimony, this Commission hereby specifically finds as follows: a) The application applies to property located: 21660 East Gateway Center Drive with an area of 13.35 acres and is vacant. b) The properties to the north, east and west of the subject site are developed for commercial use. Property to the south is vacant. c) The subject site is vacant. d) The site is sufficient in size and can provide adequate ingress and egress to allow commercial development in character with surrounding current land uses; and 3. Based upon substantial evidence presented to this Commission during the above -referenced August 27, 1990, public hearing, and upon the specific findings of facts set forth in para- graphs 1 and 2 above, this Commission hereby finds and con- cludes as follows: a) Because of its recent incorporation, the City of Dia- mond Bar lacks an operative General Plan. Accordingly, action was taken on the application as to required con- sistency with the General Plan pursuant to the terms and provisions of California Government Code Section 65360. b) That the proposed application, together with the con- ditions applicable thereto, will not be detrimental to the public health, safety, or welfare, or materially injurious to the properties or improvements in the vi- cinity. c) That the application complies with all applicable provisions of the City Planning and Zoning Code. 4. This Commission hereby recommends that the City Council find and certify that the project has been reviewed and consider- ed in compliance with the California Environmental Quality Act of 1970 and, further, hereby issue a Negative Declara- tion with conditions. 5. Based on the findings and conclusions set forth in para- graphs 1, 2, 3, and 4 above, this Commission hereby re- commends approval of the application subject to the fol- lowing restrictions as to use and standard conditions: i PLANNING COMMISSION RECOMMENDED CONDITIONS This approval is granted for a twelve lot subdivision only; as shown on the tentative parcel map. 2. Street, sewer, storm drain and grading plans and final map shall be submitted for approval by the City Engineer prior to recordation. 3. Repair any broken or damaged curb, gutter, sidewalks, and pavement on streets within or abutting the subdivision. 4. Details and notes shown on the tentative map are not neces- sarily approved. Any details or notes which may be incon- sistent with requirements of ordinances, general conditions of approval, or Department policies must be specifically approved in other conditions, or ordinance requirements are modified to those shown on the tentative map upon approval by the City. 5. Prior to approval of final map, the design guidelines en- dorsed by the City Council by Resolution n89-104, dated October 17, 1989, shall be revised in accordance with the following conditions and, to the extent deemed appropriate, incorporated into a development agreement. i. The intensity of development on parcels 1/1a, 3, 23 shall not exceed a floor area ratio (FAR) of 0.65:1. The intensity on all other parcels shall not exceed an FAR of 0.5:1, nor shall the aggregate development for the center exceed an FAR of 0.5:1. ii. The height limit on Parcels 1/1a, 3, 4, 6, 7, 81 9, 10 may be exceeded, to a limit of nine stories or one hundred fifty (150) feet, only with approval of the City of Diamond Bar. iii. Development on the site shall conform to a vehicle trip budget and a program for trip allocation and monitoring, as approved by the Planning Commission. iv. All development in Gateway Corporate Center shall be subject to the City's review and approvals proces- ses. V. With the exceptions of Parcels 1/1a, 3 and 23, as contained in the Gateway Corporate Center Design Guidelines as referenced in said Resolution, there shall be a three (3) story, forty-five (45) foot height limit for all construction. Parcels 1/1a, 3 and 23 shall be limited to five (5) stories in height, or seventy-five (75) feet. vi. As this property is located within the area descri- bed by the Forester and Fire Warden as Fire Zone 4 and future construction must comply with applicable Code requirements. Water mains, fire hydrants, and fire flows as re- quired by the county Forester and Fire Warden for all land shown on the map to be recorded shall be provided. viii. Fire Department and City approved street signs, and building address numbers prior to occupancy shall be provided. a ix. Fire Department access shall extend to within 150 feet distance of any portion of structures to be built. X. The private driveways shall be indicated on the final map as "FIRE LANES" and shall be maintained in accordance with the Los Angeles County Fire Code. xi. All required fire hydrants shall be installed, tested and accepted prior to construction. Vehicular access must be provided and maintained serviceable throughout construction. xii. If structure is to be 35 feet in height or 3 stories the driveway shall be 28 feet paved width. xiii. The required fire flow for public fire hydrants at this location is 5000 gallons per minute at 20 psi for a duration of 5 hours, over and above maximum daily domestic demand. xiv. The required on -site fire flow for private on -site hydrants is 2500 gallons per minute at 20 psi. Each private on -site hydrant must be capable of flowing 1250 gallons per minute at 20 psi with any two hydrants flowing simultaneously. xv. Fire hydrant requirements are as follows; Install 3 private on -site fire hydrants and upgrade 1 public fire hydrant. xvi. All hydrants shall measure 6" x 4" x 2 1/2" brass or bronze, conforming to current AWWA standard C503 or approved equal. All hydrants shall be installed a minimum of 25 feet from a structure or protected by a (2) two hour fire wall. To be located as per map on file with this office. xvii. Fire flow date for existing hydrant be provided. If fire flow can be met, upgrade not needed. All hydrants shall be installed in conformance with Title 20, L.A. County Government Code or appropriate City regulations. This shall include minimum six- inch diameter- mains. Arrangements to meet these requirements must be made with the water purveyor serving the area. xviii. Forty-six feet (461) right-of-way dedication is required to increase the street widths to thirty-six 36) feet curb to curb is required. In addition, a five (5) foot public utility easement on each side of the street is required. xix. As the street which intersects Gateway Center Drive poses a problem with the sight distance and curva- linear orientation, the street shall be a cul-de-sac and emergency access road of 20 feet in width for Fire and Sheriff's Departments with restricted access for emergency agencies shall be constructed. xx. Permitted uses shall be limited to office, hotel, restaurant and related retail, commercial and service uses. xxi. Signage shall conform to the City's Code require- ments. xxii. A development agreement shall be prepared which will incorporate applicable provisions of the design guidelines, as amended. BY: ATTEST: APPROVED AND ADOPTED THIS 10TH DAY OF SEPTEMBER PLANNING COMMISSION OF THE CITY OF DIAMOND BAR David Schey, Chairman Irwin Kaplan, Secretary I, Irwin Kaplan, Secretary of the Planning Commission of the City of Diamond Bar, do hereby certify that the foregoing Resolution was duly introduced, passed, and adopted by the Planning Commission of the City of Diamond Bar, at a regular meeting of the Planning Commission on held on the 27th day of August, 1990, by the following vote -to -wit: AYES: [COMMISSIONERS:] NOES: [COMMISSIONERS:] ABSENT: [COMMISSIONERS:] RESOLUTION NO. 89-104 A RESOLUTION OF THE'CITY COUNCIL OF THE CITY OF DIAMOND BAR RATIFYING AND RECONFIRMING THE DESIGN GUIDELINES APPLICABLE TO THE GATEWAY CORPORATE CENTEM. A. Recitals. i) On December 16, 1981, ARCIERO & SONS, INC., a California Corporation ("Arciero" hereinafter) and the DIAMOND BAR DEVELOPMENT CORPORATION, a California Corporation Development Corporation" hereinafter) entered into that certain Agreement of Protective Covenants, Conditions and Restrictions Agreement" hereinafter) pertaining to that certain real propertyin the City of Diamond Bar commonly referred to as the Gateway Corporate Center - Diamond Bar ("Gateway" hereinafter) and legally described as Lots 1 through 24, inclusive, of Tract Map No. 39679, as recorded in Book 1083, pages 14 through 21, inclusive, of Tract Maps in the Office of the County Recorder of Los Angeles County. ii) On June 21, 1985, Development Corporation and Arciero executed that certain First Amendment to the agreement, thereby modifying the provisions of the agreement pertaining to an architectural committee. iii) On or about June 28, 1985, the Los Angeles County Board of Supervisors adopted and approved a Unilateral 1 Contract Imposing Land Use Restrictions pertaining to the Gateway property and caused to be recorded said Unilateral Contract and Development Standards and Landscape Criteria appended thereto concerning Gateway in furtherance of Los Angeles County Zoning Ordinance No. 85-00992 Adopted June 6, 1985. iv) On April 9, 1987, TRANSAMERICA DEVELOPMENT COMPANY, successor in interest to Development Corporation Transamerica" hereinafter) and DIAMOND BAR BUSINESS ASSOCIATES successor to Arciero ("Business Associates" hereinafter) executed a Second Amendment to the Agreement thereby amending certain parking standards contained in the Agreement. Transamerica and Business Associates, on May 16, 1988, amended the Agreement pertaining to certain specified permitted uses within Gateway. v) On April 13, 1987, Business Associates recorded a Master Declaration of Covenants, Conditions and Restrictions Master Declaration" hereinafter) pertaining to Gateway, thereby supplementing and amending the Agreement. Said Master Declaration specifically adopted and approved, in Section 5.3(a) thereof, certain architectural design criteria and specifications for Gateway described as 'Gateway Corporate Center - Diamond Bar Design Guidelines" prepared by Hill Pinkert Architects, Inc., and dated October, 1986 ("Design Guidelines" hereinafter). Said Master Declaration was approved and recorded in accordance with the procedures and requirements of the Agreement. Recordation of the Master Declaration thereby substituted the Design Guidelines referred to therein for the Development Standards and Landscape 2 Criteria identified in paragraph A (iii), above. vi) Pursuant to Section 5.3 of the Master Declarations, the Design Guidelines were amended in July, 1988. vii) It is the purpose of this Resolution to reconfirm and ratify the Design Guidelines, as heretofore amended, in order to insure that the same are utilized and implemented with respect to property developed in Gateway. viii) All legal prerequisites to the adoption of this Resolution have occurred. B. Resolution. NOW, THEREFORE, the City Council of the City of Diamond Bar does hereby find, determine and resolve as follows: 1. In all respects in set forth in the Recitals, Part A, of this Resolution. 2. The City Council hereby ratifies and reaffirms the Design Guidelines for Gateway Corporate Center, Diamond Bar, dated October, 1986, and amended July, 198$. The City Council hereby specifically finds and determines that the Design Guidelines, dated October, 1986 and amended July, 1988, are the Design Guidelines for thelGateway Corporate Center and were duly and validly approved pursuant to the provisions of the Master Declaration of Covenants, Conditions and Restrictions and the Agreement. 3. The City Council hereby specifically finds and determines that the Design Guidelines, including, but not limited to, parking requirements and design criteria contained therein 3 shall be, and the same hereby are declared to be, applicable to all projects in Gateway and City staff, consultants and developers of projects within Gateway hereby are directed to implement the same. 4. The City Clerk shall keep and maintain a full, true and correct copy of the Design Guidelines available for public use. 5. Business Associates shall provide to the City of Diamond any proposed amendments, modifications or changes to the Design Guidelines and/or the Master Declaration. 6. The City Clerk shall certify to the adoption of this Resolution. PASSED, ADOPTED AND APPROVED this 17th day of October 1 1989. 0 Mayor I, LYNDA BURGESS, City Clerk of the City of Diamond Bar, do hereby certify that the foregoing Resolution was passed, adopted and appr_ox=ed at a regular meeting of the City Council of the City of Diamond Bar held on the 17th day of October , lggg, by the following vote: AYES: COUNCIL MEMBERS: Forbing, Miller, Werner Mayor Pro Tem Horcher and NOES: COUNCIL MEMBERS: None Mayor Papen ABSENT: COUNCIL MEMBERS: None ABSTAINED: COUNCIL MEMBERS: None ATTEST : /` City Clerk of th6 City of Diamond Bar. l N11012}RGATEWAY DB 6,11A 5 November 10, 1988 California Days Inc. 11020 White Rock Road, #250 Rancho Cordova, California 95670 Dear Sirs: Lis Angeles County DEPARTMENT OF REGIONAL PLANNING 320 West Temple Street Los Angeles California 90012 974-6401 f4of r8n-Mufdo0i- PI._' rg @irectnr CERTIFIED -RECEIPT ®•: REQUESTED ® 0 RE: CONDITIONAL USE PERMIT CASE NO. 87558-(1) To construct and operate a hotel. 21725 East Gateway Drive, Diamond Bar San Jose Zoned District, Zones CM--U/C--BE The Regional Planning Commission, by its action of November 9, 1988, GRANTED the above described permit. Documents pertaining to this grant are enclosed. Your attention is called to the following: 1. Condition No. 2, that this grant shall not be effective for any purpose until the applicant and the owner of the property involved,, or his duly authorized representative,, have filed at the office of the Department of Regional Planning the enclosed affidavit stating that they are aware of,, and accept all the conditions of this permit; The commission's decisionjmay be appealed to the Board of Supervisors at the office of Mr. Larry J. Monteilh,, Executive Officer, Room 383,, Hall of Administration, 500 West Temple Street,, Los Angeles,, CA 90012, telephone (213) 974-1442. The appeal must be postmarked or delivered in person within 15 days after this notice is received by the applicant. This grant will not become effective until and unless this period has passed without an appeal; 3. The Commission's grant affects the following described property: Lot 3 Tract 39679, Map Book 1083, pages 14-21 inclusive, office of the County Recorder, Los Angeles County, California. California Days Inc. November 10, 1988 Page 2 If you have any questions regarding this matter,, please contact the Variances and Permits Section at (213) 974-6446. Very truly yours,, DEPARTMENT OF REGIONAL PLANNING James E. Hartl, Acting Director of Planning John Schwarze, Administrator Current Planning - Branch JS:RF:meg Enclosures: Affidavit; Findings and Conditions cc: Building and Safety,, Board of Supervisors, Zoning Enforcement,. Solberg + Lowe Architects, 1901 Main St., Santa Monica, CA 90405 Van R. Keener, 840-K W. 9th St., Upland, CA Bruce Renwick, 515 S. Figueroa St., #1900, Los Angeles, CA 90071 Doug Ring or Roger Van Wert, 1800 Ave. of the Stars, Century City, CA CONDITIONAL USE PERMIT CASE NO. 8755E-(1) HEARING DATES: August 31 and October 27, 1988 The applicant, California Days, Inc., requested a use permit to construct a 184 room hotel on property located at the southwest corner of Gateway Center Drive and Golden Springs Drive in the unincorporated community of Diamond Bar. PROCEDURE BEFORE THE COMMISSION: Hearing of August 31, 1988 The applicant's representatives and responded to questions from adequacy of the proposed parking drive to the hotel parking lot. opposition. testified in favor of the request the Commission concerning the and the safety of the entrance There was no testimony in The Commission continued the public hearing with instructions that the applicant provide a parking demand report and restudy the site plan to determine whether additional parking could be provided. The Commission further scheduled a field trip to the site. Field Trip_of October 24, 1988 The Commission conducted a field trip to the subject property at which all members were present. Hearing of October 27, 1988 The applicant's representative presented a revised site plan, showing additional parking, and the parking demand report requested at the first hearing. Following discussion of the submitted materials, the Commission suggested and the applicant's representative agreed that a further report on parking demand would be subm.itted after the hotel had been in operation for two years and that, if the report showed a need, additional parking would be provided. Having afforded all persons present an opportunity to testify, the Commission closed the public hearing and by a vote of 4-0, Commissioner Ternstrom being absent, instructed staff to prepare findings and conditions for approval of the requested use permit. FINDINGS: 1. The applicant proposes to construct a hotel on a 3.13 acre parcel of land, located at 21725 East Gateway Drive in the community of Diamond Bar. The subject site is part of a subdivision of 23 industrial lots known as Gateway Center. 1- CONDITIONAL USE PERMIT CASE NO, 87558-(1) 2. South of the site is the Orange (57) and Pomona (60) freeway interchange. The lots adjacent to the proposed hotel are now vacant but are planned for a restaurant and offices. 3. The property is zoned CM-BE-U/C (Commercial manufacturing - billboard exclusion unilateral contract). A hotel in this zone requires a conditional use permit. This area is designated "Industrial" in the Diamond Bar Community plan. 4. The property is an irregularly -shaped, graded pad, with steep slopes on the north, east and west sides. 5. The hotel would be a rectangular, 85,500 square foot building. The first floor would contain the lobby area, a gift shop, conference rooms, and an indoor/outdoor res- taurant. The guest rooms would be located on all six floors. 6. 215 parking spaces would be provided, 15 more than the min- imum required. A parking study prepared by a professional traffic engineer was submitted in support of the adequacy of the proposed parking.The applicant agreed to provide addi- tional parking spaces should the provided parking prove inadequate. 7. The proposed site is consistent with the unilateral contract recorded on July 1, 1985. The design has also been reviewed and approved by the Diamond Bar Municipal Advisory Council. 8. An Initial Study was prepared on this project in compliance with the State CEQA Guidelines and the environmental reporting proce- dures of the County of Los Angeles. It was originally determined that the proposed project might exceed established threshold criteria for the visual and traffic environmental and service factors. 9. The applicant, by signed agreement, has modified the project so that it can now be determined that that it will not have a sig- nificant effect on the environment. The potential impacts of the original project and the actions taken to mitigate these impacts are as follows: As a means of mitigating potential visual impacts on scenic highways, the applicant has conformed the project to the criteria and standards for corridor protection shown on pages 19 and 20 of the Scenic Highway Element. 2- sp CONDITIONAL USE PERMIT CASE NO. 87558- M 9. (Continued) As a means of mitigating potential traffic impacts,the applicant will comply with the recommendations for street dedications and improvements, fees and assessments con- tained in the letter dated July 21, 1988 from the Depart- ment of Public Works to the Department of Regional Plan- ning and the subsequent recommendations of the Depart- ment of Public Works concerning site distance at the parking lot driveway entrance, as described at the public hearing. BASED ON THE FOREGOING, THE COMMISSION CONCLUDES: A. The proposed use with the attached conditions and restrictions will be consistent with the adopted general plan for the area. B. With the attached restrictions and conditions, the requested use, at the location proposed, will not adversely affect the health, peace comfort or welfare of persons residing or working in the surrounding area, and will not be materially detrimental to the use, enjoyment, or valuation of property of other persons located in the vicinity of the site, and will not jeopardize, endanger, or otherwise constitute a menace to the public health, safety or general welfare. C. The proposed site is adequate in size and shape to accom- modate the yards, walls, fences, parking and loading fac- ilities, landscaping and other development features pre- scribed in the Zoning Ordinance, and as is otherwise required in order to integrate the use requested with the uses in the surrounding area. D. The proposed site has adequate traffic access and said site is adequately served by other public access and said site is adequately served by other public or private service facilities which it requires. COMMISSION ACTION: 1. The Regional Planning Commission approves the negative declaration for the project, certifies that it has reviewed and considered the environmental information contained in the Initial Study, and determines that the proposed project will not have a significant effect on the environment. 2. In view of the findings of fact presented above, Conditional Use Permit Case No. 87558-(1) is GRANTED with the attached conditions. 3- CONDITIONAL USE PERNIT CASE NO. 87558-(I) VOTE: 5-0 CONCURRING: Commissioners Fisher, Ternstrom, Clark, Robinson and Strong DISSENTING: None ABSENT: None 7M CONDITIONAL USE PERMIT CASE NO. 87558-(1) CONDITIONS Page 1 1. Unless otherwise apparent from the context, the term "per- mittee" shall include the applicant and any other person, corporation, or other entity making use of this grant. 2. This grant shall not be effective for any purpose until the permittee and the owner of the property involved (if other than the permittee) have filed at the office of the Depart- ment of Regional Planning their affidavit stating that they are aware of, and agree to accept, all of the conditions of this grant. 3. The permittee shall defend, indemnify and hold harmless the County, its agents, officers, and employees from any claim, action, or proceeding against the County or its agents, offi- cers, or employees to attack, set aside, void or annul this permit approval, which action is brought within the applica- ble time period of Government Code Section 65907. The County shall promptly notify the permittee of any claim, action, or proceeding and the County shall cooperate fully in the defense. If the County fails to promptly notify the permittee of any Claim, action or proceeding, or if the County fails to cooperate fully in the defense, the permittee shall not thereafter be responsible to defend, indemnify, or hold harmless the County. 4. This grant will expire unless used within 3 years from the date of approval. A one year time extension may be requested before the expiration date. 5. If any provision of this grant is held or declared to be invalid, the permit shall be void and the privileges granted hereunder shall lapse. 6. The subject property shall be developed, maintained and oper- ated in full compliance with the conditions of this grant and any law, statute, ordinance or other regulation applicable to any development or activity on the subject property. Failure of the permittee to cease any development or activity not in full compliance shall be a violation of these conditions. 7. This grant allows the construction and operation of a hotel with accessory restaurant, lounge and meeting rooms, subject to the following restrictions as to use: a. The hotel may contain a maximum of 184 guest units. CONDITIONAL USE PERMIT CASE NO. 87559-(1) CONDITIONS Page 2 7. (Conditions) b. The minimum parking provided on -site shall be the greater of 215 spaces or 15 spaces overall plus 0.5 spaces per guest room and 1.0 spaces per guest suite plus one space for each 3 occupants in the restaurant, outside eating area and meeting rooms, as determined by the Building and Safety Division of the Department of Public Works. For the purpose of this condi- tion, a suite shall be a group of 2 or more rooms (excluding bathrooms) which because of its design and access may be rented only as a single unit. C. Not more than 30 percent of the minimum required parking may be compact sized. d. Two years after opening the hotel, the permittee shall submit a report to the Regional Planning Commission describing the actual parking demand at the hotel. If based upon the report and such other evidence as may be presented to the Commission by the Director of Planning the Commission determines that there is cause to believe that the hotel's parking is deficient, the Commission may schedule a public hearing to determine whether the conditions of this grant should be modified to require additional on -site parking or other appropriate mitigation measures. If the Commission determines that a hearing should be held, the permittee shall, within 60 days of such determination, submit to the Director of Planning a sum of money equal to the fee for submission of a Conditional Use Permit appli- cation to cover the cost of the hearing. The permittee shall notify the Director of the opening date to enable enforcement of this condition. e. The public access to the hotel restaurant and meeting rooms shall be from the lobby or an interior hallway. This condition does not preclude passage to and from these facilities by means 'of the patio deck by already seated patrons or hotel guests. There shall be no exterior signs advertising the availability of these facilities. f. The development of the property shall comply with the terms and conditions of the unilateral contract recorded as Document 85763963, on July 1, 1985, and any approved modifications thereto. g. The permittee shall arrange for trash pick-up during off-peak traffic hours within the hotel parking lot. h. No building permits shall be issued until an approved lot line adjustment has been recorded for the subject property. CONDITIONAL USE PERMIT CASE N0. 87558-(1) CONDITIONS Page 3 8. The subject property shall be developed and maintained in substantial compliance with the plans on file marked Exhibits A" and "B". In the event that subsequent revised plans are submitted the written authorization of the property owner is necessary. 9. All requirements of the Zoning Ordinance and of the specific zoning of the subject property must be complied with unless otherwise set forth in these conditions or shown on the ap- proved plans. 10. Three copies of a landscape plan, which may be incorporated into a revised plot plan, shall be submitted to and approved by the Planning Director before issuance of a building per- mit. The landscape plan shall show the size, type, and loca- tion of all plants, trees, and watering facilities. All landscaping shall be maintained in a neat, clean and health- ful condition, including proper pruning, weeding, removal of litter, fertilizing and replacement of plants when necess- ary. 11. Provisions shall be made for all natural drainage to the sat- isfaction of the Department of Public Works. Drainage plans and two signed grading plans shall be submitted to the De- partment of Public Works for approval before grading or con- struction. 12. The subject facility shall be developed and maintained in compliance with requirements of the Los Angeles County De- partment of Health Services. Adequate water and sewage fa- cilities shall be provided to the satisfaction of said De- partment. 13. Upon receipt of this letter, the permittee shall contact the Fire Prevention Bureau of the Los Angeles County Forester and Fire Warden to determine what facilities may be necessary to protect the property from fire hazard. Any necessary facili- ties shall be provided as may be required by said Depart- ment. 14. The permittee shall secure any necessary permits from the South Coast Air Quality Management District and shall fully comply with the terms of said permits. 15. The permittee shall contact the Department of Public Works to determine whether an Industrial Waste Disposal Permit is required. No activity for which a permit is required shall be initiated on the subject property before a permit is ob- tained and any required facilities are installed. The per- mittee shall keep any required permits in full force and effect and shall fully comply with any requirements thereof. CONDITIONAL USE PERMIT CASE NO. 88558-(1) CONDITIONS Page 4 16. The permittee shall provide for adequate site distances at the driveway entrance and shall provide road improvements, dedications, fees and assessments as described in the letter dated July 21, 1988, from the Department of Public Works to the Department of Regional Planning, a copy of which is attached to these conditions. 17. Complete or guarantee completion of all requirements of Con- dition 16 to the satisfaction of the Department of Public Works before obtaining building permits. CJ d tirGf' ( s Cam` 1 t,n1Z f t1 ;9- Mtn l Cl , i l s yrL r D.r_.r y AGENDA ITEM NUMBER: REPORT DATE: MEETING DATE: CASE/FILE NUMBER: APPLICATION REQUEST: PROPERTY LOCATION: APPLICANT: PROPERTY OWNER: BACKGROUND: City of Diamond Bar PLANNING COMMISSION Staff Report 4 May 26, 1994 June 13, 1994 Development Review No. 93-1 and Conditional Use Permit No. 93-4 The Development Review is a request to allow the construction of a restaurant. The Conditional Use Permit is.a request for the following purposes: (1) to allow grading within a. hillside management area; (2) to allow live entertainment; and (3) to allow the sale and on -site consumption of alcoholic beverages in the C-M Zone. . 21671 E. Gateway Center Drive Diamond Bar, CA 91765 Dr. Akbar Omar. 2216 E. Merced Covina, CA 91790 A R Veasing and Investment Inc. 1135 S. Sunset Ave., Suite 308 West Covina, CA 91770 The proposed project was originally .presented to the Planning Commission, at a public hearing, on June 28, 1993. At that time, and at subsequent Planning Commission hearings, the proposed project was continued until project concerns could be resolved. At the January 24, 1994 Planning Commission continued public hearing, the proposed project was tabled, allowing staff to work with the applicant to address project concerns. 1 r The property owner/applicant, Dr. Akbar Omar is requesting a Conditional Use Permit and Development Review for the proposed project. The Conditional Use Permit is for the following purposes: (1) to allow grading within a hillside management area; (2) to allow live entertainment; and (3) to allow the sale and on -site consumption of alcoholic beverages in the C-M Zone. The Development Review to allow construction of the proposed restaurant structure. The proposed project site is a vacant lot within the Gateway Corporate Center located at 21671 E. Gateway Center Drive (Lot 4) adjacent to the Radisson Hotel. The project site contains 2.033 acres. Generally, the following zones and uses surround the project site: to the north is the Pomona Freeway and the Orange Freeway interchange; to the east is the Commercial -Manufacturing -Billboard Exclusion -Unilateral Contract (C-M-BE-U/C)Zone and the Radisson Hotel; and to the south and west is C-M-BE-U/C Zone. The project site has a contemplated draft General Plan land use designation of Profession Office (OP). On August 27, 1990, the Planning Commission approved Conditional Use Permit No. 90-70, a similar project without the ability to provide live entertainment. On August 26, 1991, the Planning Commission granted and extension of time and approval for live entertainment for Conditional Use Permit No. 90-70. The applicant did not exercise the approval. Consequently, the approval expired. In January 1993, a new application was submitted to the City. APPLICATION ANALYSIS: Development Review: Pursuant to Chapter 22.72, Section 020 of Ordinance No. 5, any and all commercial projects which are new construction on vacant property will be subject to the Development Review process. This process ensures that development projects comply with all applicable local design guidelines, standards and ordinances with minimum adverse effects on surrounding properties and the environment. It also requires consistency with the contemplated draft General Plan which promotes high aesthetic and functional standard to complement and add to the physical, economic, and social character of Diamond Bar. The proposed project is commercial, new construction, on a vacant property. As such, is subject to the Development Review process. The property owner/applicant is proposing to construct a two (2) story up -scale" restaurant of 11,100 square feet. The upper floor is 7,435 square feet and will consist of several dining areas, bar/lounge, dance floor, two (2) bandstand areas, kitchen, one (1) storage area, rest - rooms, office, waiting area, vestibule, and service yard area. The 2 lower floor is 3, 665 square feet and will consist of a storage area, office, restrooms, and telephone room. The proposed restaurant will not provide banquet facilities. The last time this project was presented to the Planning Commission was at the January 24, 1994 continued public hearing. Since that time, the applicant has worked with staff to resolve the concerns of the Commission. The result incorporates the following revisions: 1. Deleted balconies to reduce the restaurant structure's occupancy in order to provide the required number of parking spaces; 2. Deleted five (5) underground parking stalls; 3. Deleted high retaining walls along the north and west property lines; 4. Reduced the restaurant structure's square footage by approximately 2,700 square feet in order to provide the required number of parking spaces; 5. Relocated the service area to the side of the restaurant structure instead of at the front; 6. And located the restaurant structure 30 feet from top of north slope instead of 15 feet to accommodate the County of Los Angeles sanitary sewer easement. The property owner/applicant did obtained approval from Gateway Corporate Center architectural committee. However, the proposed project has been revised. Considering these revisions, the applicant will be required to obtain approval from Gateway Corporate Center architectural committee. The architectural style of the restaurant structure is Contemporary Mediterranean. The architectural style differs from the existing buildings within the Gateway Corporate Center. But, the architectural style within Diamond Bar is eclectic. The uniqueness of the architectural style of the restaurant will enhance the appearance of the Gateway Corporate Center and Diamond Bar. The restaurant structure's exterior will be stuccoed in an off-white color. The roof will be constructed from clay "S" tiles in a terra Gotta color. Brick veneer will be utilized as an accent on the round wall adjacent to the main entry of the restaurant structure. Awnings will be utilized above several windows. The awnings will be constructed from canvas in a dark teal color. The following is a comparison of the City's required development standards, Gateway Corporate Center's development standards, and the proposed project's development standards. 3 CITY GATEWAY - LOT 4 PROJECT 1. Setbacks: 01; Front Setback: 451; Front Setback: 491; Side Setback: 101; Side Setbacks: .143' Rear Setback: Top of 200' plus; slope; Rear Setback: 30' from top of slope; 2. Height: 13 times Height: 9 stories or Height: 2 stories - buildable area; 1501; 36'; 3. Parking: 1 stall Parking: N/A Parking: 90 stalls for every 3 occupants; 4. Parking Design: Parking Design: Parking Design: Standard spaces- Standard spaces-8' x Standard spaces-9' x 8 Z' X 18' ; 18' ; 18' ; Aisle: 261; Aisle: 27'; Aisle: 261; Handicapped: 1 Handicapped: must be Handicapped: 3 per 40 stalls - 9' x 18' with 5' provided, size not addressed; stalls with 5' load- ing zone adjacent; loading zone adjacent; 5. Landscaping: Min- Landscaping: Minimum Landscaping: 29% of imum 10a of 15% of the gross site; entire lot or usable lot area; parcel; The proposed project complies with the City's development standards. It complies with Gateway Corporate Center design guidelines except for the width of back-up aisles which are required to be 27 feet. If the drive aisles are changed to 27 feet, the minimum required parking spaces may not be provided. Pursuant to the City's standards 26' back-up aisle is adequate. The unused western portion of the project site will remain undeveloped. This portion of the site will not be divided as an independent parcel for future development. As such, staff feels that provision should be made for the planting and maintenance of the unused portion of the project site. The proposed restaurant's hours of operation, pursuant to the applicant's request, are Sunday through Saturday from 11 a.m. to 2 a.m. There will be two shifts. Ten employees per shift. In the future, the applicant may wish to serve breakfast and/or brunch. If this becomes the case, staff feels that the restaurant should be closed between '2 a.m. and 7 a.m. N South Coast Air Quality Management District (SCAQMD) requires that applicant to obtain permits for emissions' control from broilers utilized for cooking. Before the issuance of a Certificate of Occupancy, the applicant will be required to obtain all required SCAQMD's permits. Signage is not a part of this application. In the future, a Planned Sign Program will need to be submitted to the. City for review and approval. The proposed project was reviewed by the Los Angeles county Fire Department. Attached to this staff report is a copy of the Fire Department's conditions. The applicant is required to comply with these conditions. Landscaping Although the proposed landscaping is adequate, staff feels that the unused westerly portion of the site should be landscaped. This landscaping should match existing slopes' planting materials. Irrigation will need to be installed for this area. The contemplated Draft General Plan Land Use Element strategies directs staff to enhance amenities and landscaping within commercial areas and use trees, shrubs, or vines to break visual monotony, soften the appearance of walls, reduce glare, heat, and reflection. With the strategies of the contemplated Draft General Plan in mind, staff feels that additional trees should be added in the parking lot area as follows: 1. Ten (10) - 15 gallon trees, within the planter area along the east property line, adjacent to the Redesign Hotel site; 2. Seven (7) - 15 gallon trees, within diamond shape planter areas that would be located between two parking spaces which face each other; 3. Locate the proposed large trees, which should be 24 inch box size midpoint between the existing pine trees within the planter area adjacent to the sidewalk along Gateway Center Drive; 4. Define landscape limits and type of planting materials to be utilized in an area between the main entrance and the service yard. The applicant will be required to submit an irrigation plan and landscape plan indicating the above mentioned changes. The landscape plan should indicate the names and sizes of all planting materials for review and approval by the City. The finger shape planter area within the parking lot area are three (3) feet wide, measured from outer curb .to outer curb. Due to the size constraint of these planter areas, staff feels the applicant should provide root barrier control boxes around each tree. The purpose of the barrier is to encourage the trees' root systems to grow deep below the 5 pavement instead of 18 inches to two ( 2 ) feet below the pavement and stop the heaving of pavement because of the shallowness of a tree's root system. Parking Requirement: Pursuant to Chapter 22.52, Section 1110 of the County of Los Angeles Planning and Zoning Code, for every three (3) occupant one or more parking spaces shall be provided for entertainment, assembly, dining uses. Occupancy is calculated by the Building Official pursuant to the 1991 Uniform Building Code. As calculated by the Building Official, the occupancy for the proposed restaurant will be 270 person. As such, the proposed project will be required to maintain a minimum of 90 parking spaces. The proposed as submitted provides 90 parking spaces. Lighting throughout the parking lot area has been proposed (see revised site plan attachment). The adequacy of the light is not addressed. The Walnut Valley Sheriff Department has reviewed the proposed project and has recommended that the parking lot lighting be designed in a manner that provides a minimum of one lumen of light per square foot at ground level at any location in the parking area. The applicant will need to indicate the minimum lighting yield on a revised site plan. Conditional Use Permit: Hillside Development: A Conditional Use Permit is required for development within a hillside area pursuant to the Hillside Management Ordinance No. 7 (1992). The Hillside Management Ordinance is applicable to all parcels of land containing grades in excess of ten (10) percent. The purpose of the Hillside Management Ordinance is to preserve and protect the views to and from hillside areas in order to maintain the identity, image and environmental quality of Diamond Bar; to provide in hillsides alternative approaches to conventional flat land development practices and complement the character and topography of the land; to provide maximum safety in hillside development; to maintain and environmental equilibrium consistent with the native vegetation, animal life, geology, slopes, and drainage patterns; to preserve, where possible, significant natural topographical features; and to minimize the grading impacts. Slopes located at the site vary from one (1) to ten (10) percent at the southern boundary and within the center portion of the site, 25 to 50 percent at the western portion of the site, and. 50 to approximately 77 percent at the northern and eastern boundaries. Since there are slopes on the project site that are more than ten (10) percent, the applicant is required to comply with the Hillside Management Ordinance. Grading will consist of approximately 2,603 cubic yards of earth for both cut and fill. Earth from the eastern portion of the site will be 0 dispersed to the western portion of the site in order to create a more workable pad. Importing and exporting of earth is not proposed. The site plan indicates that off -site grading (previously proposed) will not occur on the adjacent property which is developed with the Radisson Hotel. The change is due to the deletion of a retaining wall along the east property line and under ground parking area and a revised location of the restaurant structure. One (1) retaining wall is proposed at a maximum height of four (4) feet. The retaining wall will be located approximately 50 feet south of the north property line along the outer limits of the parking area. Pursuant to the City Engineer's Department's review, the retaining wall could exceed four (4) foot height to accomplish improvements indicated in the plans. The Planning Commission may wish to give a latitude of up to six (6) feet, as a maximum height for the retaining wall. The existing drainage capacity of the site may not be adequate with the the construction of the proposed project. The applicant is required to provide a hydrology study and hydrology calculations showing the estimated run-off and capacity of the existing drainage system. If the existing drainage inadequate, the applicant is required to design an adequate drainage system to the satisfaction of the City Engineer. Sale and On -Site Consumption of Alcoholic Beverages Live Entertainment: A Conditional Use Permit is required pursuant to Chapter 22.28, Part 6, Section 260, of the Code. The purpose of the Conditional Use Permit is to allow the sale and on -site consumption of alcoholic beverages and live entertainment in connection with a restaurant which has an occupancy of at least 200 persons within the C-M Zone. The proposed restaurant is within the C-M Zone with an occupancy of 270 persons. The restaurant structure incorporates a bar/lounge, band stand for live entertainment and a dance floor. As such, this project requires a Conditional Use Permit. The type of live entertainment will be limited to a small band, vocals, and dancing. Since the project site is within a corporate center and devoid of single-family residential structures, adjacent to a hotel and a freeway, the proposed entertainment will not have a noise impact. However, for the safety of patrons and employees security should be provided between the hours of 9 p.m. and until the last employee leaves after closing. NOTICE OF PUBLIC HEARING: This item has been advertised in the San Gabriel Valley Tribune and the Inland Valley Daily Tribune on May 23, 1994. Notices were mailed to seven (7) property owners within a 500 foot radius of the project site 7 on May 19, 1994. ENVIRONMENTAL ASSESSMENT: Although the proposed project could have a significant effect on the environment, there will not be a significant effect in this case because mitigation measures were incorporated into the proposed project and a mitigated 'Negative Declaration has been prepared pursuant to the provisions of the California Environmental Quality Act (CEQA). RECOMMENDATION: Staff recommends that the Planning Commission approve Conditional Use Permit No. 93-4 and Administrative Development Review No. 93-1, Findings of Fact, and conditions, as listed within the attached resolution. Prepared by: Ann J. Lungu, Assistant Planner Attachments: 1. Draft Resolution 2. Negative Declaration No. 93-7 3. Initial Study 4 Exhibit "A" - Revised Plans - Site Plan, Floor Plan, Elevations, Conceptual Landscape Plan, and Grading and Drainage Plan dated June 13, 1994 5. Los Angeles County Fire Department. Preliminary Review 6. Aerial Photograph fi? RESOLUTION NO. 94-XX A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF DIAMOND BAR APPROVING DEVELOPMENT REVIEW NO. 93-1, CONDITIONAL USE PERMIT NO. 93-4, AND NEGATIVE DECLARATION NO. 93-7, AN APPLICATION FOR CONSTRUCTION OF A TWO-STORY UPSCALE" RESTAURANT STRUCTURE, TO PERMIT THE SALE AND ON -SITE CONSUMPTION OF ALCOHOLIC BEVERAGES IN THE C-M ZONE, AND GRADING IN A HILLSIDE MANAGEMENT AREA LOCATED WITHIN GATEWAY CORPORATE CENTER AT 21671 E. GATEWAY CENTER DRIVE, (TRACT 39679, LOT 4). A. Recitals 1. The property owner, A R Leasing and Investment Inc. and the applicant, Dr. Akbar Omar have filed an application for Development Review No. 93-1 and Conditional Use Permit No. 93-4 for a vacant lot located within Gateway Corporate Center at 21671 E. Gateway Center Drive, Dia- mond Bar, Los Angeles County, California, as described in the title of this Resolution. Hereinafter in this Resolution, the subject Development Review and Conditional Use Permit application is referred to as the Application". 2. On April 18, 1989, the City of Diamond Bar was established as a duly organized municipal organization of the State of California. On said date, pursuant to the requirements of the California Government Code Section 57376, Title 21 and 22, the City Council of the City of Diamond Bar adopted its Ordinance No. 1, thereby adopting the Los Angeles County Code as the ordinances of the City of Diamond Bar. Title 21 and 22 of the Los Angeles County Code contains the Development Code of the County of Los Angeles now currently applicable to development applications, including the subject Application, within the City of Diamond Bar. 3. The City of Diamond Bar lacks an operative General Plan. Accordingly, action was taken on the subject application, as to consistency to the future adopted General Plan, pursuant to the terms and provisions of the Office of Planning and Research extension granted pursuant to California Government Code Section 65361. 1 4. The Planning Commission of the City of Diamond Bar, on June 13, 1994 conducted a duly noticed public hearing on said Application. 5. All legal prerequisites to the adoption of this Resolu- tion have occurred. B. Resolution NOW, THEREFORE, it is found, determined and resolved by the Planning Commission of the City of Diamond Bar as follows: 1. The Planning Commission hereby specifically finds that all of the facts set forth in the Recitals, Part A, of this Resolution are true and correct. 2. The Planning Commission hereby finds that the initial study review and Negative Declaration No. 93-7 has been prepared by the City of Diamond Bar in compliance with the requirements of the California Environmental Quality Act of 1970, as amended, and guidelines promulgated thereunder. Further, said Negative Declaration reflects the independent judgement of the City of Diamond Bar. 3. The Planning Commission hereby specifically finds and determines that, having considered the record as a whole, including the findings set forth below, and changes and alterations which have been incorporated into and conditioned upon the proposed project set forth in the application, there is no evidence before this Commission that the project as proposed by the Application, and conditioned for approval herein, will have the potential of an adverse effect on wildlife resources or the habitat upon which the wildlife depends. Based upon substantial evidence presented in the record before the Commission, the Commission hereby rebuts the presumption of adverse effect contained in Section 753.5 (d) of Title 14 of the California Code of Regulations. 4. Based upon the findings and conclusions set forth herein, and in conformance, with the terms and provisions of the California Government Code Section 65361, this Commission, hereby finds as follows: a) The project relates to a vacant lot of approximately 2.033 acres located within Gateway Corporate Center. The project site is within the Commercial -Manufacturing -Billboard Exclusion - Unilateral Contract (C-M-BE-U/C) Zone with a contemplated draft General Plan land use designation of Professional Office (OP). The project site is located at 21671 E. Gateway Center Drive, City of Diamond Bar, California. b) Generally, the following zones and uses surround the project site: to the north is the Pomona Freeway and Orange Freeway interchange; to the east is the C-M-BE-U/C Zone and the Radisson Hotel; to the south and west is C-M-BE-U/C Zone. c) The project site is adequately served by Golden Springs Drive and Copley Drive and by other public or private service facilities as are required. Development Review: d) The design and layout of the proposed project is consistent with the applicable elements of the City's contemplated draft General Plan, design guidelines of the appropriate district, and any adopted architectural criteria for specialized area, such as designated historic districts, theme area, specific plans, community plans, boulevards, or planned developments. e) The design and layout of the proposed project will not unreasonably interfere with the. use and enjoyment of neighboring existing or future developments, and will not create traffic or pedestrian hazards. f) The architectural design of the proposed project is compatible with the character of the surrounding neighborhood and will maintain the harmonious, orderly and attractive development contemplated by Development Review - Chapter 22.72 and the contemplated draft General Plan. g) The design of the proposed project would provide a desirable environment for its occupants and visiting public as well as its neighbors through good aesthetic use of materials, texture, and color that will remain aesthetically appealing and will retain a reasonably adequate level of maintenance. h) The proposed project will not be detrimental to the public health, safety or welfare, or materially injurious to the properties or improvements in the vicinity. Conditional Use Permit: i) The proposed project will not be in substantial conflict with the contemplated draft General Plan. j) The proposed project at the project site will not adversely affect the health, peace, comfort, or welfare of persons residing or working in the surrounding area or be materially detrimental to the use, enjoyment, or valuation of property of other persons located in the vicinity of the site, or jeopardize, endanger, or otherwise constitute a menace to public health, safety, or general welfare. k) The project site is adequate in size and shape to accommodate the yards, walls, fences,. parking and loading facilities, landscaping, and other development features prescribed within the -Code, or as is otherwise required in order to integrate said use with the uses in the surrounding area. 1) The proposed project is located and designed so as to protect the safety of current and future community residents and businesses, and will not create significant threats to life and/or property due to the presence of geologic, seismic, slope instability, fire, flood, mud flow, or erosion hazard. j) The proposed project is compatible with the natural, biotic, cultural, scenic, and open space resources of the area. k) The proposed project is conveniently served by neighborhood shopping and commercial facilities, can be provided with essential public services without imposing undue costs on the total community, and is consistent with the objectives and polices of the contemplated draft General Plan. 1) The proposed project demonstrates creative and imaginative design, resulting in a visual quality that will complement community character and benefit current and future community residents and businesses. 5. Based upon findings and conclusion set forth above, the Planning Commission hereby approves this Application subject to the following conditions: 4 a) The project shall substantially conform to all plans dated June 13, 1994, collectively labeled Exhibit "A" as submitted to and approved by the Planning Commission. b ) The project site shall be maintained in a condition which is free of debris, both during and after the construction, addition, or implementation of the entitlements granted herein. The removal of all trash, debris, and refuse, whether during or subsequent to construction, shall be done only by the property owner, applicant, or by a duly permitted waste contractor who has been authorized by the City to provide collection, transportation, and disposal of solid waste from residential, commercial, construction, and industrial areas within the City. it shall be the applicant's obligation to insure that the waste contractor utilized has obtained permits from the City of Diamond Bar to provide such services. c) This project shall adhere to the Hillside Management Ordinance No.7 (1992). d) Retaining walls shall not exceed six (6) feet in height. e) The unused western portion of the project site shall remain undeveloped and shall not be subdivided into an independent parcel for future development. f) This project shall comply with all State handicap and American Disabilities Act's requirements. g) This project shall provide lighting within the parking lot area that maintains a minimum of one 1) lumen of light per square foot at ground level at any location in the parking lot area. A revised site plan shall be submitted, within 60 days of approval of this grant, indicating said lighting requirements for review and approval by the City. h) The applicant shall obtain required permits from South Coast Air Quality Management District SCAQMD) before the issuance of a Certificate of occupancy. i) The applicant shall comply with all requirement of the Los Angeles County Fire Department. E j) The applicant shall obtain the written approval from Gateway Corporate Center architectural committee"before the issuance of any City permits. k) The restaurant structure shall not exceed an occupancy of 270 persons. 1) The project shall maintain a minimum of 90 parking spaces. m) The restaurant shall not be open for business between the hours of 2 a.m. and 7 a.m. n) Live entertain shall be "minor" in nature, ancillary to the restaurant use, and limited to a small band, vocals, and dancing. o) All operations of the restaurant and entertainment uses shall be subject to the provision of the City's Noise Ordinance. Individual entertainment shall be suspended should noise levels exceed the Noise Ordinance's limits. p) Security shall be provided from 9 p.m. until the last employee leaves after closing. q) The applicant shall submit, within 60 days of approval of this grant, a landscape and irrigation plans for review and approval by the City which shall incorporate the following. (1) Ten (10) - 15 gallon trees within the planter area along the east property line, adjacent to the Radisson Hotel site; (2) Seven (7) - 15 gallon trees within diamond shape planter areas that will be located between two parking spaces which face each other; 3) Locate the proposed large trees, which shall be 24 inch box size, midpoint between the existing pine trees within the planter area adjacent to the sidewalk along Gateway Center Drive; (4) Define landscape limits and type of planting material to be utilized in an area between the main entrance and the service yard; (5) Planting materials utilized to landscape the unused western portion of the site and slope area shall match existing slopes' planting materials; (6) Names and sizes of all planting materials; and (7) Root barrier control boxes for each tree. r) The applicant shall provide a hydrology study and hydrology calculations showing estimated run-off capacity of the existing drainage system for review and approval by the City. If the existing C drainage is inadequate, the applicant shall design an adequate drainage system to the satisfaction of the City Engineer. s) The applicant shall submit a Planned Sign Program for this project for review and approval by the Planning Commission before the issuance of any sign permits. t) Notwithstanding any previous subsection of this resolution, if the Department of Fish and Game requires payment of a fee pursuant to Section 711.4 of the Fish and Game Code, payment therefore shall be made by the applicant prior to the issuance of any building permit or any other entitlement. u) This grant shall not be effective for any purpose until the permittee and owner of the property involved (if other than the permittee) have filed within fifteen (15) days of approval of this grant, at the City of Diamond Bar Community Development Department, their affidavit stating that they are aware of and agree to accept all the conditions of this grant. Further, this grant shall not be effective until the permittee pays remaining Planning Division processing fees. v) The City reserves the right to review the Development Review and Conditional Use Permit, and any amendment thereto at a public hearing, at any time and modify the conditions herein listed, as deemed appropriate. w) The subject property shall be maintained and operated in full compliance with the conditions of this grant and any law, statute, ordinance or other regulations applicable to any development or activity of the subject property. x) The Applicant shall comply with Planning and Zoning, Building and Safety, and Engineering requirements. y) This grant shall be valid for one (1) year and must be exercised (i.e. construction) within that period or this grant will expire. A one (1) year extension may be requested in writing and submitted to the City 30 days prior to the expiration date of this grant. 7 The Planning Commission shall: a) Certify to the adoption of this Resolution; and b) Forthwith transmit a certified copy of this Resolution, by certified mail to, A R Leasing and Investment Inc., 1135 S. Sunset Ave., West Covina, CA 91770 and Dr. Akbar Omar, 2216 E. Merced, Covina, CA 91790. APPROVED AND ADOPTED THIS THE 13TH DAY OF JUNE, 1994, BY THE PLANNING COMMISSION OF THE CITY OF DIAMOND BAR. BY: David Meyer, Chairman I, James DeStefano, Secretary of the Planning Commission of the City of Diamond Bar, do hereby certify that the foregoing Resolution was duly introduced, passed, and adopted, at a regular meeting of the Planning Commission held on the 13th day of June, 1994, by the following vote: AYES: [COMMISSIONERS:]. NOES: [COMMISSIONERS:] ABSENT: [COMMISSIONERS:] ABSTAIN: [COMMISSIONERS:] ATTEST: James DeStefano, Secretary E? MITIGATED NEGATIVE DECLARATION No. 93-7 June 4, 1993 Case Number: Conditional Use Permit No. 93-4, Development Review No. 93-1 Applicant: Dr. Akbar Omar 2216 E. Merced Covina, CA 91790 Proposal: Development Review No. 93--2 is a request to construct a two story structure on a vacant parcel. The two story structure is to be utilized as a restaurant with a lounge/bar and entertainment. Conditional Use Permit No. 93-4 is a request to include a lounge/bar and entertainment. A Conditional Use Permit is required pursuant to Chapter 22.28, section 260 in order to permit entertainment in conjunction with a restaurant that will have an occupancy of more than 200 persons within the Commercial -Manufacturing (C-M) zone. Location: 21671 E. Gateway Center Drive Diamond Bar, CA 91965 Environmental Findings: The proposed project, as determined in the City of Diamond Bar, could have a significant effect on the environment, there will not be a significant effect in this case because the mitigation measures described on herein have been incorporated into the proposed project and a Mitigated Negative Declaration has been prepared. II. Discussion of Environmental Evaluation: Mitigated Negative Declaration Explanation to supplement "Yes" and "Possible" answers given in the Initial Study. Environmental Impacts: 1. Earth. Will the proposal result in: b. Disruptions, displacements, compaction or overcovering of the soil? Yes. c. Changes in topography or ground surface relief features? Possibly. Explanation_ The project site is a vacant lot with slopes ranging from 1 to 10 percent, 25 to 50 percent, and 50 to 100 percent. A flat pad exists within the site and slopes at the boundaries of the site. In order to construct the restaurant structure, 2,500 cubic yards of soil will be utilized for cut and 2,500 cubic yards of soil will be utilized for fill. There will be no importing or exporting of soil for the proposed project Mitigation:_ The 5,000 cubic yards of soil will be balanced on the site. Grading for the proposed project is required to comply with the Hillside Management Ordinance No.7 1992). 3. water. Will the proposal result in: b. Changes in absorption rates, drainage patterns, or the rate and amount of surface run-off? Yes. Explanation_ Due to theproposed grading and the construction of structures drainage patterns and surface run-off will change. Mitigation: The applicant is required to provide drains which will has the capacity to accept surface run-off that will result from the proposed project. The applicant is also required to comply with the Hillside -Management Ordinance No. 7 (1992) which provides guideline for drainage patterns and surface run-off. 7. Light and Glare. Will the proposal result in: a. significant new light and glare or contribute significantly to existing levels of light and glare? Possibly_. Explanation: The proposed site is an undeveloped parcel. With the development of a restaurant, new light and possible glare will be introduced within the surrounding area. Mitigation: The proposed location of the parking area is below street grade and set back from the front property line adjacent to Gateway Center Drive) by 25 feet. This 25 foot area incorporates a landscaped berm. This will eliminate the glare of headlights from cars within the parking lot area to the street or adjacent properties. All lighting for the project is required to be positioned in a manner that will shield glare to adjacent properties and the public right-of-way. 13. Transportation/Circulation: will the proposal result in: a. Generation of substantial additional vehicular movement? Possibly. Explanation: The development of the proposed restaurant on a vacant site will cause additional vehicular movement. f. Increase in traffic hazards to motor vehicles, bicyclists, or pedestrians? Possibly. Explanation•. The trafficstudy and final EIR for Gateway Corporate Center identified one restaurant as a planned used within the Gateway Corporate Center development along with a restaurant facility within a hotel. At this time, Gateway Corporate Center has a restaurant facility within a hotel. As part of the original approval for Gateway Corporate Center, development standards and mitigation measures included a restaurant as proposed by this application. The development of the proposed restaurant on a vacant sill could cause a traffic hazard due to the increase of vehicles to the area. ENVIRONMENTAL CHECKLIST FORM I. Background: The proposed project is for the construction_ of a two story structure of 13,804 s uare feet on a vacant parcel. The two story structure will be utilized to accommodate a restaurant_ with bar/lounge and entertainment with an occupancy of 328 persons. 1. Name of Applicant: Dr. Akbar Omar 2. Address and Phone Number of Proponent: 2216 E. Merced Covina CA 91790 818 919-0504 3. Name, Address and Phone of Project Contact: Syed Raza,SRA Architects, 12600 Central. Ave., Chino CA 91710 (909) 591- 4. Date of Environmental Information Submittal: January 11, 1993 5. Date of Environmental Checklist Submittal: June 4_, 1993 6. Lead Agency (Agency Required Checklist): City of Diamond Bar 7. Name of Proposal if applicable (Tract No. if Subdivision): Development Review No. 93-1 and Conditional Use Permit No. 0'-n 8. Related Applications (under the authority of this environmental determination): None YES variance: Conditional Use Permit: X Zone Change: General Plan Amendment: NO X X X Attach Completed Environmental Information Form) II. Environmental Impacts: Explanations and additional information to supplement all "yes" and 'possibly" answers are required to be submitted on attached sheets) YES NO POSSIBLY 1. Earth. Will the proposal result in: X a. Unstable earth conditions or changes in geologic substructures? X b. Disruptions, displacements, compaction or overcovering of the soil? X C. Change in topography or ground surface relief features? X d. The destruction, covering or modification of any unique geologic or physical feature? X e. Any increase in wind or water erosion of soils, either on or off the site? X f. Changes in deposition, erosion of stream banks or land adjacent to standing water, changes in siltation, deposition or other processes which may modify the channel of constant or intermittently flowing water as well as the areas surrounding permanent or intermittent standing water? X g. Exposure of people or property to geologic hazards such as earthquakes, landslides, mudslides, ground failure, or similar hazards? 2. Air. Will the proposal result in: X a. substantial air emissions or deterioration of ambient air quality? X b. The creation of objectionable odors? X C. Alteration of air movement, moisture, or temperature, or any changes in climate, either locally or regionally? 3. Water. Will the proposal result in: X a. Changes in currents or the course or direction of water movements? X b. Changes in absorption rates, drainage patterns, or the rate and amount of surface run-off? X c. Alterations of the course or flow of flood waters? X d. Changes in the amount of surface water in any body of water? X e. Discharge into surface waters, or in any alteration of surface water quality including but not limited to dissolved oxygen and turbidity? X f. Alteration of the direction or rate of flow of ground waters? YES NO POSSIBLY X X X 4. X X X X X 5. X X X X 6. X X X X g. Change in the quantity of ground waters, either through direct additions or withdrawals, or through interception of an aquifer by cuts or excavations? h. substantial reduction in the amount of water otherwise available for public water supplies? i. Exposure of people or property to water related hazards such as flooding? Plant Life. Will the proposal result in: a. change in the diversity of species, or number of any species of plants (including trees, shrubs, grass, crops, and aquatic plants)? b. Reduction in the numbers of any unique rare of endangered species of plants? C. Reduction in the size of sensitive habitat areas or plant communities which are recognized as sensitive? d. Introduction of new species of plants into an area, or in a barrier to the normal replenishment of existing species? e. Reduction in acreage of any agricultural crop? Animal Life. Will the proposal result in: a. Change in the diversity of species, or number of any species of animals (birds, land animals including reptiles, fish, and shellfish, benthic organisms and insects)? b. Reduction in the numbers of nay unique rare or endangered species of animals? C. Introduction of new species of animals into an area, or in a barrier to the normal migration or movement of resident species? d. Reduction in size or deterioration in quality of existing fish or wildlife habitat? Noise. Will the proposal result in: a. Significant increases in existing noise levels? b. Exposure of people to severe noise levels? 7. Light and Glare. Will the proposal result in: a. Significant new light and glare or contribute significantly to existing levels of light and glare? 8. Land Use. Will the proposal result in: a. A substantial alteration of the present or planned land use in an area? YES NO POSSIBLY 9. Natural Resources. Will the proposal result in: X a. An increase in the rate of use of any natural resources? 10. Risk of Upset. Will the proposal result in: X a. A risk of an explosion or the release of hazardous substances (including but not limited to, oil, pesticides, chemicals or radiation) in the event of an accident or upset condition? X b. Probable interference with an emergency response plan or an emergency evacuation plan? 11. Population. Will the proposal: X a. Alter the location, distribution, density, or growth rate of the human population of an area? 12. Housing. Will the proposal affect: X a. Existing housing, or create a demand for additional housing? 13. Transportation/Circulation. Will the proposal result in: X a. Generation of Substantial additional vehicular movement? X b. Effects on existing parking facilities or demand for new parking?. X C. Substantial impact on existing transportation systems? X d. Alterations to present patterns of circulation or movement of people and goods. X e. Alterations to waterborne, rail or air traffic? X f. Increase in traffic hazards to motor vehicles, bicyclists or pedestrians? 14. Public Services. Will the proposal: a. Have an effect upon, or result in the need for new or altered governmental services in any of the following areas: X 1. Fire Protection? X 2. Police Protection? X 3. Schools? X 4. Parks or other recreational facilities? X 5. Maintenance of public facilities, including roads? X 6. Other governmental services? YES NO POSSIBLY 15. Energy. Will the proposal result in: X a. Use of substantial amounts of fuel or energy? X b. Substantial increase in demand upon existing energy sources or require the development of new sources of energy? 16. Utilities. Will the proposal result in: X a. A need for new systems, or Substantial alterations to public utilities? 17. Human Health. Will the proposal result in: X a. Creation of any health hazard or potential health hazard (excluding mental health)? X b. Exposure of people to potential health hazards? 18. Aesthetics. Will the proposal result in: X a. The obstruction of any scenic vista or view open to the public, or will the proposal result in the creation of an aesthetically offensive site open to the public view? 19. Recreation. Will the proposal result in: X a. An impact upon the quality or quantity of existing recreational opportunities? 20. Cultural Resources. Will the proposal result in: X a. The alteration of or the destruction of a prehistoric or historic archaeological site? X b. Adverse physical or aesthetic effects to a prehistoric or historic building, structure or object? X C. A physical change which would affect unique ethnic cultural values? X d. Restrictions on existing religious or sacred uses within the potential impact area. 21. Mandatory Findings of Significance? X a. Does the proposed project have the potential to degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self sustaining levels, threaten to eliminate or significantly reduce a plant or animal community, reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California history or prehistory? YES NO POSSIBLY X b. Does the proposed project have the potential to achieve short-term, to the disadvantage of long-term, environmental goals? X C. Does the proposed project pose impacts which are individually limited but cumulatively considerable? X d. Does the project pose environmental effects which will cause substantial adverse effects on human beings, either directly or indirectly? III. DISCUSSION OF ENVIRONMENTAL EVALUATION: Attach Narrative) IV. DETERMINATION: On the basis of this initial evaluation: I find that the proposed project COULD NOT have a significant effect on the environment, and a NEGATIVE DECLARATION will be prepared. X I find that although the proposed project could have a significant effect on the environment, there will not be a significant effect in this case because the mitigation measures described on the attached sheet have been incorporated into the proposed project. A MITIGATED NEGATIVE DECLARATION WILL BE PREPARED. I find that the proposed project MAY have a significant effect on the environment, and an ENVIRONMENTAL IMPACT REPORT is required. Date: June 4, 1993 signature: Title: Planning Jch-1-41an For the City of Diamond Bar, California n INITIAL STUDY QUESTIONNAIRE A. GENERAL INFORMATION Project Applicant (Owner): Dr. Akbar Omar NAME 2216 E. Merced ADDRESS West Covina, CA 91790 818) 919-0504 staff use) PROJECT NUMBE.R(s): Project Representative: SRA_Architects NAME 12600 Central Ave. ADDRESS Chino, --CA 91710 714) 591-7441 PHONE # PHONE # 1. Action requested and project description: This is a new restaurant project with wet bar and dance floor. 2. Street location of project: 21671 E. Gateway Center Dr. Diamond Bar, CA 91790. 3a. Present use of site: Vacant 3b. Previous use of site or structures: Vacant 4. Please list all previous cases if any) related to this project: None 5. Other related permit/approvals required. Specify type and granting agency. None 6. Are you planning future phases of this project? Y ON If yes, explain: N/A 7. Project Area: Covered by structures, paving: 49,159 Sq. Ft. Landscaping, open space: 8,866 5 q. Ft. Total Area: 58,025 Sq. Ft, 8. Number of floors: 2 9. Present zoning: CM 10. Water and sewer service: Yes Walnut Water L.A. County Sanitn. Domestic Public Water Sewers B. ENVIRONMENTAL INFORMATION 1. Environmental Setting --Project Site a. Existing use/structures None, Vacant b. Topography/slopes Plat pad, slopes at boundry of site. c. Vegetation Groundcover at slopes d. Animals None e. Watercourses None f. Cultural/historical resources None 9. Other None 2. Environmental Setting -- Surrounding Area a. Existing uses structures (types, densities); Commercial hotel directly adjacent- high density b. Topography/slopes Slopes at boundry c. Vegetation Groundcover at boundry d. Animals None e. Watercourses None f. Cultural/historical resources None g. Other None Answers are not required if the area does not contain natural, undeveloped land. 3. Are there any major trees on the site, including oak trees? YES NO If yes, type and number: N/A 4. Will any natural watercourses, surface flow patterns, etc., be changed through project development?: YES NO If yes, explain: N/A 5. Grading: Will the project require grading? YES NO If yes, how many cubic yards? 2500 Cu. Yds. + Will it be balanced on site? YES M) If not balanced, where will dirt be obtained or deposited? N/A 6. Are there any identifiable landslides or other major geologic hazards on the property (including uncompacted fill)? YES NO If yes, explain: N/A 7. Is the property located within a high fire hazard area (hillsides with moderately dense vegetation)? YES G Distance to nearest fire station: 1/2 Mile (Grand Ave.} 8. Noise: 7 Existing noise sources at site: None Noise to be generated by project: None Fumes: Odors generated by project: None Could toxic fumes be generated? No 10. What energy --conserving designs or material will be used? This project uses insulated wal l s and the cei l jnfl- as insulated attic_ mace_ Does service exist at site? O N Y N If yes, do purveyors have capacity to meet demand of project and all other approved projects? O N Y N If domestic water or public sewers are not available, how will these services be provided?Domestic water and public sewer are available Residential Projects: N/A 11. Number' and type of units: N/A 12. School s : N/A What school district(s) serves the property? N/A Are existing school facilities adequate to meet project needs? YES NO N/A If not, what provisions will be made for additional classrooms? N/A _ Non -Residential projects: 13. Distance to nearest residential use or sensitive use (school, hospital, etc.) 1/2 mile 14. Number and floor area of buildings- 1 building-_ 13,81681.6 Sq. Ft. 15. Number of employees and shifts: 2 shifts 16. Maximum employees per shift: 10 17. Operating hours: 11 AM to 2 AM 18. Identify any: End products None Waste products None h{eans of disposal N/A 19. Do project operations use, store or produce hazardous substances such as oil, pestle' , chemicals, paints, or radioactive materials? YES I( f) If yes, explain N/A 20. Do your operations require any pressurized tanks? YES Id0 If yes, explain N/A 21. Identify any flammable, reactive or explosive materials to be located on-- s i t e . None 22. Will delivery or shipment trucks travel through residential areas to reach the nearest highway? YES S If yes, explain N/A CERTIFICATION: I hereby certify that the statements furnished above and in the attached exhibits present the data and information required for this initial evaluation to the best of my ability, and that the facts, statements, and information presented are true and correct to the best of my knowledge and belief. Date Signature For: CITY OF DIAMOND BAR Case# '>K 9 3 —Fz- { DEPARTMENT OF PLANNING Recvd i t i /q :2? 21660 E. Copley Drive Suite 190 Fee $ 006, 714)396-5676 Fax (714)861-3117 Receipt_ CONDITIONAL USE PERMIT APPLICATION By Record Owner(s) Nacre r. Akbar Omar Last name first) Address 2216 E. Merced Applicant Applicant's Agent Dr. Akbar Omar SRA Architects 2216 E. Merced 12600 Central Ave. City !J-Cdy )J amnnd Rar Zip 91790 91790 Phone(81d) 919-0504 91710 018) 919-0504 (714) 591-7441 Attach separate sheet if necessary, including names, addresses, and signatures of members of partnerships, joint ventures, and directors of corporations) CONSENT: I consent to the submission of the application accompanying this request Signed ` Date ALI recorded oun certification: I, the undersigned, hereby certify under penalty of perjury that the information herein provided is correct to the best of my knowledge. Printed Name: Syed Rana Applicant or Agent) C Date //-- Applicant or, Agent Y Vocation 211-71 E. Gateway Center Dr., Diamond Bar, CA 91790 street address or tract and lot number) zoning CM HNM 111337 Previous Cases Present Use of Site NOt used, vacant. Use applied for He Project Size (gross acres) 1.33 Acres Domestic Water Source yes Project density N/A Company/District Walnut Water Method.of Sewage disposal Public Sewer Sanitation District L.A. County Sanztatic Grading of sots by Applicant? Yes X No Show necessary grading design on site plan or tent map) APPROPRIATE BURDENS OF.PROOF MUST ACCOMPANY REQUEST LEGAL DESCRIPTION (all ownership comprising the proposed lot (s)/parcel(s) A PORTION OF LOT 4 AS PER TRACT NUMBER 39679 IN THE CITY OF DIAMOND BAR, BOOK 1083 PAGES 14-21 OF TRACT MAPS IN THE OFFICE OF THE 0Q1JNZY RZC. RDER OF SAID COUNTY. Area devoted to structure Residential Project: N/A Proposed density 9200 Sq. FtLandscaping/Open space 8866 Sq. Ft. and N/A gross area) N/A Units/Acres) No. of lots) Parking Required Provided Standard 112 112 Compact _ 0 0 Handicapped 2 2 Total CONDITIONAL USE PERMIT CASE -BURDEN OF PROOF In addition to the information required in the application, the applicant shall substantiate to the satisfaction of the Zoning Board and/or Commission, the following facts: A. That the requested use at the location proposed will not: 1. Adversely affect the health, peace, comfort or welfare of persons residing or working in the surrounding area, or 2. Be materially detrimental to the use, enjoyment or valuation of property of other persons located in the vicinity of the site, or 3. jeopardize, endanger or otherwise constitute a menace to the public health, safety or general welfare. See Attached 1 B. That the proposed site is adequate in size and shape to accommodate the yards, walls, fences, parking and loading facilities, landscaping and other development features prescribed in this Title 22, or as is otherwise required in order to integrate said use with the uses in the surrounding area. See Attached Sheet C. That the proposed site is adequately served: 1. By highways or streets of sufficient width and improved as necessary to carry the kind and quantity of traffic such use would generate, and 2. By other public or private service facilities as are required. See Attached Sheet Conditional Use Permit Case -Burden of Proof A. (1,2 and 3) The project is located adjacent to the 60 and 57 freeways next to a large hotel. This is-also,a commercial area with no residences close by. This restaurant will not adversely affect the health, peace, com- fort, or welfare of people living and working close by but will improve these conditions by giving facilities to the hotel guests, and other consumers in the area. This project will also rraise the values of properties close by and be enjoyable to people in the vicinity. this project's use is helpful and consistant with the surrounding; properties, therefore it will not jeopordize, endanger, or constitute a menace to the public health, safety or general welfare. LZIN The project size, including ments is well suited to the building only takes up 16% and other requirements fit C. (1 and 2) parking, landscape, and all other require - property. As shown on our site plan, the of the site area, and parking, landscape well within the site. This project is served by the 57 and 60 freeways that are directly adjacent to the site. Diamond Bar Boulevard is one of the freeway exits that can be used to reach the project. This is a major road and should be adequate to serve this projects traffic quantities. The other surface streets used to reach the project are also large enough to serve traffic needs. Utilities for the project are readily available with water, sewer, gas and electric along Gateway Center Drive. Any other service, public or private can be served by the:streets. I r TI-IL 23 PON 1.82 12/90 N."E 93 12; 1:3 LA CO FD FIFE FRE':% HYUPA.NTSr FIRE FLOW tNZ ACCESS GENERAL REQUIREMEWS 1M [i W-4 -AiI - -- F.P.D. NO. ()-M" _2 ADDRESS----- BL GSQ. FT.. OF SIDE TN PE _` _ BLDG . AREA, - . YARDS OCCUPANCY CLASSIFICATION A5 ARCHITECT REMARK$ jUEA 7- STORIES T Building permits WILL NOT be issued prior to acQaptance of the hydrant; joCat. ion, fire f1pw ano aDy additional requironants by the Fire Prevention DiviSiOn of the Fire i men ts:E CQk.R.CTBD ZETI OF PLAXSi PLUS Cam" PLUS shall be submittet! for approval) . FOR INFORMATION CON.CE 1NG iii!t PLANS, CONTACT INSPECTOR: 1W, PHONE (_ _.jjq.___"_ 4V- -- NOTE: Inspectors s s. shone hours are between Sara and 10aan Friday. office meetings .are by appoints ont MO. UNLESS OTHERWISE :CNDi.C,PTEU, Ate, ME UEPP17TMZNT RQUIREME TS HARKL.D "NOT 'r1FiONN" SBALL BE INCORPORATED AS A VOREATIM VOT- INTO THE BLUE PRINTS ON SITE p i. pp- P• only, Monday thxu VOT SHOWN f lino" N 1 (> 1 ( } provide and indicate can site plan, Fare Department acc 8Gsor vehicular_ turn --around in accordance with specifications below: Provide a minim?m, unobstructed width of.. feet clearto ski , vehicuti ar access to within 150 feet of all port on of the exterior walls. Fire Code 10.207. The r1quired fire flow for PwLyc fire hydrants at this u re at 20 Vsi for location11.1 gallons per wira duration of hours, over and abcvo maxzmuv daily domestic demon . 3. ( ( ) The required fire floc for ON"JITE hydrants is gallons per minute at 20 pSi - O ER) T1JL' 23 1'2: 14 Lid CO FD FIFE PRE'•,, a DMMT5, VxRz FLOW AND RCcPSS GEVEgXL REQUIRElMTS F,= Page 2 NOT O N SOWN 4. ) Fire hydrant are as follows: pl,,,, Install public Hydrar.t(s) Vpgrade public 3q ,.iq ire Nydr ariT( ss) 3 ri t:a 11' ...__...t]--sites ` ir a I y x ax t (S ) . All hydrants !shall xi)easure, 6" r 4" x 2 1/21 , brass or bronze, conforming to current- AMMA tanaard C503 , or approved ecapal.•. Hydxanti shall be installed per of the Los Angc-1P.S COI; my Water ordinance speci.ficatlo% No. 7Q34. (Title 20) utilit x Hant-'a ., sect won 4.o to 4.6. 6. ( j ( ) All requirCd publ i.c fire hydrants shall. be installed., tested and accepte prior to o= trucztionr 7. ') ( ) Vehicular acc;eaO mt s{._ Fie provided axed maintained set' viceable thlfolacjhcut- constrUOt:i.<M . provide an appr ved Class t syotem. The in I Cl a s JT__ yhal? be cross-r°omiected at risersClassorthe base. Table 38, 3805 of. the Bui?r snq iwM provide an a pprOVed -fire spz-.j. nkler Syr; .. Sub" Plans for apprcv.l, pri.,or to in,,talla-tion. Pi re, Cade 2.1.41.. Reason The fire sprinkler y$tem shall be CJ- cul.ated per panPhlet Z3, 73 t of 4231.C, w1bichcvicel Is, app'li0able. The f i.resg+rinkler 5y teia shall be 51.p j-vi.sed a6 required in the Bu_; +cling Cede, 3 8O3 , 12. (~ j plans showing xx!'aci=:rgroaand p er)j.x1g Of 01 -::iT e hydrdrits t spi7inkl er systems shall_ be ;St bjuittc-:d for appY'Ovill prior to i, nstal,lation. 1. 3. `) i ) do -site protection lac~.ii4tles hydrants., s rinkler be bm.ry_t cf for a'pprOval. Pr or to systenstetc, shall occupancy. 14. f ) Thy inspection, hyydrosta..lc t,-Zt aria flushing of the bewitnessed )Jy the hyarantand/or sprinkler system :ihall FireJ)ep-,jrtment' rgrege entative and no under-g Ound profferpipingshallbecOAreredwztilearthorhiddenfromVlewhazbeennot_4 ficd untiltheFireDeparImentr'_-Presewtative i 7 Yoh 7 h 'to jn;*pQgt suoh j;;1 yivan n lens t ax n Y,nur _ Installations. on - Site plan: Show all exwstizjg f.jre hydxart(s) W1tk11n 300 out k'Ydr4i size and feetofallproopyert.y ljLe .!,n - call di-- mensio Li i) 1V .%L. 3a3 riJi NOTE; Additional f ire hydrant requiremetts May be made a r c rz xl .; ppl. . r . it i '7ate va a;Vi4,1ty" Cr_sr<tt-3tE and ' n JUL 23 '93 12:15 LP _70 FTC FIRE FF'EY FORM :.8 6 12/90 FIRE AND LIFE SAF'ETr BUXLVIUG RQUIRME7k TS GFIYBRAL RF;QUI EXENTS NOT SHUWN SHORN On -Site Plan: Indicate occupanoy, Type of construction and provide the center line distance from nearest cross strut to property live. (Provide accurate dimensions) J Provide area justification per table: 5C, 505, 506 and 702 (a) of the Building Co6e. Incorporate calculations on plans). 3. ( ) Provide a fire resistive- sepa2"ation en the 1e SB or TATUM, Table 91..lndi6ate- on floor plan) 4. - ( ) Fire resistive assemblies for protection of openings to comply with Title 24 4306. indicate on floor plan and :in door schedule) Shafts to ba enclosed in oompliance With Title -240 1706. Indicate on plans. The following occupant load connts are approximate and any deviation is to he Justif'i.ad by the applicant: _ --_..-- Title 24, 3302. 'Fable 33A, 6. { ) Provide additional Bans of exiting indicate: i oor plan) T! K ef , _ 3 3 0 2 . T b!e33A 7. ( ') Exit daozs shall swing in the direction of exit travel when serving any hazardous area or when serving an occupant load of 50 or more. Title 24, 3300 8. ( ) Exit doers shall be openatle from the inside without use of a key or any upecial knowi8dge or effort. Title 14, 3304-c. (indicate in door schedule) Width and height of .required exit ;doorways to comply With Title 24, , 3304M-f. (ladicate in door schodule) 10. prC7V'J-dL an approved one -hour, firs -resistive corridor. Title 24, 3305. (indicate on floor Galan) cc 11. { ) Al orrUfor openings'shall neet~ the requirement of Building code 3305-h, including steel frames, 20-sinnte 1_ abel_ecl doors, hinges,: latching devices, and closures. Title 24, 3305--h. (indicate in dear schedule) 1 { ) Deaden.d corridors over 20 feet in length are not permitted. Title 24, 3305--e. for OVER) JUL L '93 12:16 LA CO FLU FIRE FREV P.E FXRg AVIO LIVE SAMY RUIUDISO bkQUIRMS S Page 2 GENER&L RIQaIS N SHOWN 9HOWN 7 ) ( ) interior and exterior stair•,vays of buildings four or more stories in height to co ply WIMS Title 24, 3306. 14e [ Walls and soffits of enclosed usable space under interior 6t..xrways that are x3ot required to he enclosed by building Cod, 3309-f SM11 be protected on the enclosed side as required tor one -hour fire resistive construction. Title 240 3306-m. (Indicate 00 plans) 15. ( ) All openings classyifi'ed asz s ayw f, ll beh/c r{i z{ox t y.:( i protectedh ected rye ryx/1i.` I1pal171/2 hour `G{`ed Lire ihl.•1F 4%rblies hi M are automat is closing upon actuation of SMOK detect Or. Title 24, 3308. (indicate on plans) 16. ) Interior Mairway, ramp or Q ca? ator shall be enclosed as apecif'ied in Title 24, 1309. (Indicate on plans) 11<- ( ) Exit cr urt to comply Oirh Title 24, 3311. Indicate on plans) ls. ( ) Exits shad be illuminated at any time the building is occupied, with light; having are intensity of not IM than one foot-candle at floor level. Title 24, 3:313. pravi.de Fait: 5ignz per Title 24, 331.4. Aft j OIZC06 2L1. ( ( ) 'rovide Lei T lav'e'? Bpit Signs per Title. 24, 3314--e. 00 floor Provide. Low-level Exit Path Arkin per Title 24, 3314- f- i'x,v ,r- approved exiting .iluYni-nation rnd ,i:i'.,r, hated exit 2. QnS which are p,wered from q pyrate cad G Title 24, 3313 (Sa) . (1nd;cats can plans) Elevators, dumbwaiters, encala orS and moving walks to 001Aply wi-4—h Title 24, Chayter 51. (Indicat w on plaPS) 24 . ") ( ) Fire ekti.nguisher requirement s shal be detorMined by fio1d inspector. Fire Code 10001.--a. 25. ') ( ) Building address ritl."albers to be prov.idad an the front of all buildings and shall he vihible and legible from street fronting the property. slid numbers 6hal , coutr ast With their backgrcynd. Fire Code 1.0.208. 26, ( ( } Provide a key bOX 3s required by Fire Code 10.209. Location __ e ii x x.a c nt X y box to t gn .d pc_ i. A. , c c urif: 27, ( ( ) Commercial dumpst. ere o'r contai. er:°s with an individual capacity of 1.5 cubic yards on greater shall not be stared or plated within fi_.,re meet oz coobust:ibl.e walls, openings or combustible roof' ea:ve lines unless areas containing dumpsters are protaoted by an approved spr:iraloy sye't M. Fire Code 11.201. (indicate nn plant) TUl_ 23 "_ 3 1 : lr LP, CC FD FIFE F'REV FORM IS 4 7/90 SPECIAL F31t?MI C AND OCCUPANCY REQUIREXXXTS 2aOT SHOWN SRowN 1. ( ) ( ) .Provide an extra seating plan for Fire Department use. lnda cate propos6d aisles that comply with Fire ode se lions 00 J and 25.112. 2. ( ) ( ) Pr de apprbved panic hard,wars an :required exit doors. Title 24, 3319-c indicate on root schedule). 3. ('7') ( } Provide an approved fixed fire extinguishes: sy8t:em for the kitchen hood, ducts and cooking' surfaces . indicate U.L. approval, system ner, and submit U. 1" approved schematic drawing to area inspection ani. t . Fire Code 10. 313 . 4. ( ) f ? interior finish shall be provided ill. Wit.h Title 24, 4204, as follows: Class 1 - V'ertica.l. Enclosures; Class !I - Corridors; Class 1T1 - Rooms. Note and Indicate in .finish Schedule) All drapes, hangings, cur'ltains, drops and all other decorative material to comply with Fire Code 25.103. Indicate on plans), Provide an approved fire alai systen. Submit plats to area office prior tea installation. Title 24, 515 809. Fire Code Article 14. 7. ' ( } ( ) The main exit shall comply with Title 24, :3317--a. Note and indicate on floor plan) 8. J( ) ( ) Pr-Dvide side exits that Comply with Title 24, 3317- h, (Note and indicate on floor plan) 9. f C) f } Comply with posting of room capacity. Fare Code 25.11.4. Subject to field inspection approval) 10. ( ) ( ) The maximum occupant load for an asserbly use shall not exceed the occ:tapant load as determined in accordance with, Title 24, 3302-a. Table 13A. Note and incorporate calculations on plans) 9 OfNu----- j 71011Aq kd, 61 S4V& - Jad v --F-." _ __ `; ,. _ x - — _ ._F_''e.s, 'rrF _.__ ,. a-.,_ a..r, f=+c. =.a c!'"."•:'_`, f`-"+t;!+•r riJL On 12: 17 LH [D F- IF'E PREV 'r' • AN L F 7 t r Ak * FIRE DEPART tvfENTT ISM FICaMACKF19 ROAL coktr ttcE, c a.roas a t sc aco za2r3j9 o 0 r ADDIT:L'7. MAL NOT Con ly with Fire code 10,207 {d) regardi.nU fire laneverbatimWINrequirements. (incorporate approved mote a specifications into plans.) indicate 2. *} { ) Maximum allowable slope for the fire Zane is 15*. indicate actual Slope of the road,) Post along vohicular . access as "Fire irdne =y No verbatim Parking.'' note & indicate Carve radii shall be not lest, than 12 feet determined at the wenterline of the road. Fire Corte Access Standard 10.207 (a) , (b) . Provide an approved Fire Departmgnt Turnaround. verbatim Fire Cade Access; Standard 10.2 07 (a) , (b ) note & indicate 4. ( ) ( ) Indicate the a: "fed -{- 24, 504 c: cr s, C. 5#4pp .y line required by Title c) . hen, Call out the firs: resistance of exterior walls and opening; per TA18 24, Table 5p or D.C. Table 5A. 5. ( ) Comply with the reporting r_equi.rements ,as set forthWhatirein ' tIe 2 of the Los Angeles County Cade conrverningnoteHayard=8 Materials disclosure. 6 fi ( ( ) Complete and return the "Owner; ' s St:ratenent of Intended Use" for4. Tf a.ffirZative, special requirements will be made. 7. ( °} ( ) Hydrant ! ation shall be identified by theverbatimins; allat:iOM of approved blue reflective markers. note & Firs Code 10.301(d) indicate A:\FORMIS5 JUL 23 '93 12:18 LP i-C! FD FIFE PRE''.' FQRM , a$ 5 7/90 ADOTTT4NAL BUILDING AND OCCUP"CY REQU'rRYKRENTS NOT 6HOWN SRO 1. Pr ovlde a rece.ipt from the water co-jnpanv that shows that all funds have bee -I paid for the installation, and/or -upgrade oft the regUired ptabl is Fire Hydrant (s), 2. i ) ( ) Provide a letter from the water nonpany on their letterhead that shows the approximate date the work will be started and conpleted for the reVired public fire hydrant(s) . 3. L } ( } NOTE; All required pablic fire bydrants s174all be Installed, Vested and AcceptEad prier to construction as per note t6 -r Hydrant, Fire Flow and Access-. General .Requirements Form) 7. ( ) ( 3 -- Av ek91. 7 L ice s'. ^ ` ps %`tv s { •' t i e - ml a is fi iliih Y A 1 City of Diamond Bar PLANNING COMMISSION Staff Report AGENDA ITEM NUMBER: 4 REPORT DATE: October 4, 1993 MEETING DATE: October 11, 1993 CASE/FILE NUMBER: Conditional Use Permit No. 93-4 and Development Review No. 93-1 APPLICATION REQUEST: The Conditional Use Permit is a request to allow live entertainment within a restaurant, the sale and on -site consumption of alcoholic beverages in the G-M Zone. The Development Review is a request to allow the construction of a restaurant. PROPERTY LOCATION: 21671 E. Gateway Center Drive Diamond Bar, CA 91765 APPLICANT: Dr. Akbar Omar 2216 E. Merced Covina, CA 91790 PROPERTY OWNER: A R Leasing and Investment Inc. 1135 S. Sunset Ave., Suite.308 West_ Covina, CA 91770 BACKGROUND: At the September 13, 1993 continued Planning Commission public hearing, the applicant requested that the proposed project be continued to the October 11, 1993 Planning Commission meeting. This is the third continuation to allow the applicant adequate time to address the Planning Commission's concerns. These concerns are as follows: 1. Grading Plan: provide an accurate preliminary grading plan reflecting a reasonable representation of what is to be built; 1 2. Crib Wall: reduce the height or eliminated the crib wall; 3. Off -Site Grading: obtain off -site grading authorization from the Radisson Hotel; 4. Access: provided pedestrian access from the proposed project site to the Radisson Hotel; 5. Hillside Manacrement Ordinance: compliance with the Hillside Management Ordinance; 6. Sanitary Sewer Easement: the close proximity of the restaurant structure -- easement located on the north side of the project site; 7. Lighting: provide adequate lighting within the parking lot area; 8. Handicapped Parking: provide an adequate number of handicapped parking stalls; 9. Elevator: required to comply with State and Federal handicapped requirements. APPLICATION ANALYSIS: On September 22, 1993, the applicant provided a revised site plan, floor, and elevations (see attachments), to address the above mentioned concerns, for review by the Planning Division, the Engineering and Building and Safety Departments, and the Planning Commission. The original plans indicated that the proposed restaurant structure would be approximately 13,804 square feet, with an occupancy of 328 persons, and 109 parking stalls provided. The revised plans (see attachments) indicate that the restaurant structure will be reduced to approximately 10,192 square feet, with an occupancy of 366 persons, and 108 parking stalls provided. The occupancy was calculated according to the Code by the Building Official. Although the square footage of the restaurant is reduced, the occupancy is increased because of additional seating. As a result of the increase in occupancy, the parking stalls provided are inadequate. Pursuant to the Code, the 112 parking stalls are required. Lighting throughout the parking lot area has been proposed (see revised site plan attachment). The adequacy of the light has not been addressed. The Walnut Valley Sheriff Department has reviewed the proposed project and has recommended that the parking lot lighting be designed in a manner that provides a minimum of one lumen of light per square foot at ground level at any location in the parking area. The applicant will need to indicate the minimum lighting yield on the site plan. 2 Three handicapped parking stalls are provide. Pursuant to the Code, the number of handicapped parking stalls provide is appropriate. The parking stalls are located adjacent to the front entrance. The proposed restaurant structure consists of two levels. The upper level contains restaurant related facilities. The lower level consists of storage and office areas and restrooms. An elevator was indicated on previously submitted plans. The revised plans do not show an elevation. According to the Building Official, the upper level of the restaurant structure is consistent with the handicapped requirements. Therefore, it is not necessary for the lower level to comply with handicapped requirements because there are no restaurant facilities on this level. However, the lower level is required to remain void of restaurant related facilities. The site plan indicates that off -site grading will occur on the adjacent property which is developed with the Radisson Hotel. An off -site grading authorization letter is required from the adjacent property owner. The applicant has not provided the letter of authorization to the City. Additionally, there does not appear to be a complete preliminary grading plan with the revised submittal as previously requested by the Planning Commission. Pedestrian access from the project site, through the parking lot area, to the Radisson Hotel is desired. The applicant has not indicated that an attempt has been made toward the realization of this access. Located on the north side of the project site is a 10 foot Sanitary Sewer Easement. No construction will be permitted on top of or within close proximity of easement. Previously, the Engineering Department required that the easement be accurately plotted on site plan and sections. On the revised plan, the restaurant structure has been located a distance of six (6) feet from the easement. Verification from the Los Angeles County Consolidated Sewer District will be required as to the adequacy of the six (6) foot distance. The slopes within the project site vary. Slopes of 1 to 10 percent are located within the center and southern portion of the project site. Slopes of 25 to 50 percent are located on the western portion of the project site. Slopes of 50 to 100 percent are located on the northern and eastern portion of the site. Slopes of 1 to 10 percent and 50 to 100 percent will be effected by the construction of the restaurant structure. As a result, the applicant is required to comply with the Hillside Management Ordinance. Grading plan does not indicate compliance. On all version of the site plan submitted to the City, the applicant has proposed a crib on the north side of the project site. The height of the wall has varied from 14 feet to 27 feet. On the revised site plan, it appears that the crib wall will be 20 feet in height. At the July 120, 1993 Planning Commission meeting, the applicant was instructed to reduce the height of the crib wall or eliminate the crib wall. When the height of the crib wall is reduced, the effect of the crib wall should be softened with landscaping or design the wall as an integral part of the landscaping. But the crib wall height is still excessive. When designing the crib wall and landscaping, it is required that the applicant refer to the Hillside Management Ordinance for design standards. Staff is in support of a restaurant at the project location. But, there are still outstanding issues concerning the grading plan, crib wall, off -site grading, access to the Radisson Hotel, lighting, and the Hillside Management Ordinance which must be resolved before staff can recommend approval of the proposed project. At this time, staff feels that the project should be tabled until all outstanding issues are resolved. Other options contain approval or denial. RECOMMENDATION: Staff recommends that the Planning Commission table the project until all outstanding issues are resolved. Prepared by: It J. la ing Technician Attachments: Exhibit "A" - Revised Plans dated October 111 1993 4 WT City of Diamond Bar PLANNING COMMISSION Staff Report AGENDA ITEM NUMBER: I REPORT DATE: August 16, 1993 MEETING DATE: August 23, 1993 CASE/FILE NUMBER: Conditional Use Permit No. 93-4 and Development Review No. 93-1 APPLICATION REQUEST: The Conditional Use Permit is a request to allow live entertainment within a restaurant, the sale and on -site consumption of alcoholic beverages in the C-M Zone; The Development Review is a request to allow the construction of a restaurant. PROPERTY LOCATION: 21671 E. Gateway Center Drive Diamond Bar, CA 91765 APPLICANT: Dr. Akbar Omar 2216 E. Merced Covina, CA 91790 PROPERTY OWNER: A R Leasing and Investment Inc. 1135 S. Sunset Ave., Suite 308 West Covina, CA 91770 BACKGROUND: At the July 12, 1993 continued Planning Commission public hearing, the proposed project was continued to the meeting ofAugust 23, 1993. The purpose of the continuation was to allow the applicant adequate time to address the Planning Commission's concerns which are as follows: 1. Grading Plan: provide an accurate preliminary grading plan reflecting a reasonable representation of what is to be built; 2. Crib Wall: reduce the height or eliminated the crib wall; 1 3. Off -Site Grading: obtain off -site grading authorization from the Radisson Hotel; 4. Access: provided pedestrian access from the proposed project site to the Radisson Hotel; 5. Hillside Management ordinance: compliance with the Hillside Management Ordinance; 6. Sanitary Sewer Easement: located on the north side of the proposed project site; 7. Lighting: provide adequate lighting within the parking lot area; 8. Handicapped Parking: provide an adequate number of handicapped parking stalls; 9. Elevator: required to comply with State and Federal handicapped requirements. APPLICATION ANALYSIS: on August 5, 1993, the applicant provided a revised site plan and a grading/drainage plan (see attachments), to address the above mentioned concerns, for review by the Planning Division, the Engineering Department, and the Planning Commission. Lighting throughout the parking lot area has been proposed (see revised site plan attachment). The adequacy of the light has not been addressed. The Walnut Valley Sheriff Department has reviewed the proposed project and have recommended that the parking lot lighting be designed in a manner that provides a minimum of one lumen of light per square foot at ground level at any location in the parking area. The applicant will need to indicate the minimum lighting yield on the site plan. At the last Planning Commission meeting concern about the number of occupance for the restaurant structure was expressed. After reviewing the occupancy, the actual number is 328 persons. With the parking requirement of one parking space for every three occupancy, 109 parking spaces are required. The revised site plan indicates that 109 parking spaces will be provided. The original site plan for the proposed project indicated two handicapped parking stalls. The project site will provide 109 parking stalls. Pursuant to the City of Diamond Bar Planning and Zoning Code, for every 40 parking stalls provided, one handicapped parking stall shall be provided. Therefore, this project will be required to provide three handicapped parking stalls. The revised site plan indicates an additional handicapped parking stall located adjacent to the main entrance to the restaurant structure. The total number of handicapped parking stalls provided is three which comply with the Code. An elevator will be provided within the restaurant structure. The Building and Safety Department requires that the elevator meet State handicapped requirements. This was not addressed on the revised plans. The applicant will be required to indicated that the elevator complies with the State handicapped requirements on the plans. The grading plan indicates that off -site grading will occur on the adjacent property which is developed with the Radisson Hotel. An off - site grading authorization letter is required from the adjacent property owner. The applicant has not provided the letter of authorization to the City. Pedestrian access from the project site, through the parking lot area, to the Radisson Hotel is desired. The applicant has not indicated that an attempt has been made toward the realization of this access. Located on the north side of the project site is a 10 foot Sanitary Sewer Easement. This easement must be accurately plotted on site plan and sections. No construction will be permitted on top of or within close proximity of the easement. If the applicant is insisting on building over and/or within close proximity of the sanitary sewer easement, written authorization must be obtained for the Los Angeles County Consolidated Sewer district before proceeding any further with this project. The slopes within the project site vary. Slopes of 1 to 10 percent are located within the center and southern portion of the project site. Slopes of 25 to 50 percent are located on the western protion of the project site. Slopes of 50 to 100 percent are located on the northern and eastern portion of the site. Slopes of 1 to 10 percent and 50 to 100 percent will be effected by the construction of the restaurant structure. As a result, the applicant is required to comply with the Hillside Management Ordinance. Grading plan does not indicate compliance. Previously, the applicant indicated that the maximum height of the crib wall located on the northern portion of the site would be 14 feet. According to the revised grading plan, the maximum height of the crib wall is 27 feet. At the last Planning Commission meeting the applicant was instructed to reduce the height of the crib wall or eliminate the crib wall. When the height of the crib wall is reduced, the effect of the crib wall should be softened with landscaping or design the wail as an integral part of the landscaping. When designing the crib wall and landscaping, it is recommended that the applicant refer to the Hillside Management Ordinance for design standards. The Los Angeles County Fire Department has review the plans for the proposed project. Fire Department comments are an attachment to this report. Staff is in support of a restaurant at the project location. Before staff can recommend approval of the proposed project, the applicant must comply with all City codes and ordinances and address all concerns. 3 RECOMMENDATIONS; Staff recommends that the Planning Commission consider the following alternatives: 1. Continue the project until a date uncertain; 2. Withdraw the project and resubmit at a later date; 3. Deny the project; 4. Approve the project. Prepared by: Ann J. Lungu, Planning Technician Attachments: Staff Report dated July 8, 1993 Minutes of the July 8, 1993 Planning Commission meeting Revised Site Plan Grading and Drainage Plan Correspondence from the Los Angeles County Fire Department 4 CITY OF DIAMOND BAR MINUTES OF THE PLANNING COMMISSION JULY 12, 1993 CALL TO ORDER: Chairman Meyer called the meeting to order at 7:06 p.m. at the South Coast Air Quality Management District Auditorium, 21865 E. Copley Drive, Diamond Bar, California. PLEDGE OF The audience was led in the Pledge of Allegiance by ALLEGIANCE: Chairman Meyer. ROLL CALL: Commissioners: Grothe, Flamenbaum, and Chairman Meyer. Vice Chairman Plunk and Commissioner Li were absent. Also present were Community Development Director James DeStefano, who arrived at 8:06 p.m., Planning Technician Ann Lungu, Deputy City Attorney Craig Fox, Senior Engineer David Liu, and Contract Recording Secretary Liz Myers. CONSENT CALENDAR: C/Flamenbaum requested the Minutes of June 28, 1993 be amended to reflect "C/Flamenbaum". Minutes of June 28, 1993 Motion was made by C/Flamenbaum, seconded by C/Grothe and CARRIED UNANIMOUSLY to approve the Minutes of June 28, 1993, as amended. CONTINUED PT/Lungu presented the staff report regarding the PUBLIC HEARINGS: request, made by the applicant Dr. Akbar Omar, to construct a 13,800 square foot two-story structure DR NO. 93-1 & to accommodate a restaurant with bar/lounge and CUP No. 93-4 live entertainment. The undeveloped project site is 2.033 acres within The Gateway Corporate Center located at 21671 E. Gateway Center Drive. This proposed project was continued from the June 28, 1993 Planning Commission meeting in order to allow the applicant additional time to complete an on - site traffic analysis. A CUP is required, pursuant to Chapter 22.28, Part 6 of the Code, the sael and onsite consumption of alcoholic beverages and a bar/lounge with live entertainment within a restaurant within the C-M Zone. The proposed project has a 300 square foot dance floor, a bandstand area, and a maximum occupancy of 328 persons. The bar/lounge area is 2,016 square feet with the ability to seat 85 persons. A Development Review is required pursuant to Chapter 22.72, Section 020 of Ordinance No. 5, to allow the construction of a restaurant. The lower level of the project is to be utilized for offices, storage, and restrooms. Staff is concerned that this lower level has the potential to be utilized for banquet facilities in the future, and that there is not enough parking on the site to accommodate the intensity of the use. PT/Lungu reviewed the following areas which will need to be addressed by the applicant: staff feels a cornice should be added to •the series of walls shown on the north July 12, 1993 Page 2 elevation of the restaurant, to complement the cornice on the restaurant structure; a lighting plan must be submitted for review and approval by the City before the issuance of a building permit; an off -site grading authorization letter will be required from the adjacent property owner, the Radisson Hotel; the applicant is required to provide a hydrology study and hydrology calculation showing the estimated run-off and capacity of the existing drainage system, to the satisfaction of the City Engineer; a grading plan is required for the verification of the height of walls, and restaurant height; the 10 foot Sanitary Sewer Easement on the north side of the project site must be accurately plotted on the site plan and sections; no construction will be permitted on top of that easement; the elevator is required to meet State handicapped requirements; one additional handicapped parking space must be provided adjacent to the main entrance of the restaurant; the parking lot lighting should be designed in a manner that provides a minimum of one lumen of light per square foot at ground level; the Los Angeles Fire Department is reviewing the proposed project; the determination of a realistic number of employees and the effect on the proposed parking; and a Planned Sign Program will need to be submitted to the City in the future. It is recommended that the Planning Commission continue the public hearing to a future date to allow the applicant time to resolve the outstanding issues. In response to C/Flamenbaum, PT/Lunge stated that the previous approval did condition the project to provide access to the Radisson Hotel, if feasible. However, because the grade is steep, such an access may not be feasible. SE/Liu, in response to C/Flamenbaum, stated that the existing easement originates from Golden Springs Drive. It could be moved with approval from the County of Los Angeles. C/Grothe requested that a sidewalk be provided along Gateway Center Drive from the project site to the Radisson Hotel. PT/Lungu, in response to Chair/Meyer, stated that the parking requirement is based on occupant load. The off street parking issue can be addressed through the CUP. Chair/Meyer declared the Public Hearing opened. July 12, 1993 Page 3 Syed Raza, the architect of the project, made the following comments: the adjacent property may be developed, in the future, for a parking area if the applicant decides to convert the lower floor into a banquet facility; he requested changing the size of the parking stalls from 9 feet to 8.5 feet wide, as is permitted in order to achieve more landscaped area and provide more parking spaces; a lighting plan will be provided; it is practically impossible to provide vehicular access to the Radisson Hotel because of the steepness of the grade; and pedestrian access may be possible by providing steps from the parking area to the Radisson Hotel. Syed Raza then requested that the Commission approve the project. The requested information will be provided at the time that the project is submitted for plan check. At this time, Dr. Omar is in the process of negotiating with possible tenants for the restaurant. However, the tenants want to be assured that a restaurant is to be allowed on this site before going further with the design plans. C/Flamenbaum inquired if the pedestrian access would comply with ADA standards. He then suggested that the applicant become familiar with the Hillside Management Ordinance in regards to the proposed 14 foot high crib wall. Syed Raza stated that they do not know if steps up the steep grade, for pedestiran access will comply with ADA. However, sidewalks will be provided which could meet ADA standards. He stated he is not familiar with the Hillside Management Ordinance. The project is set fifteen feet from the back property line and a tiered wall is possible to support the parking area. Dr. Omar has built a crib wall at another project in which he planted seeds within the openings as a way to landscape and visually hide the wall. Hearing no further testimony, Chair Meyer closed the meeting to public testimony at this time. C/Grothe suggested that staff be directed to draft the resolutions for the next meeting. DCA/Fox stated that staff is still awaiting information of an engineering nature necessary to prepare those resolutions. AP/Searcy explained that there has never been an on site circulation study with the current configuration proposed. July 12, 1993 Page 4 Motion was made by C/Grothe and seconded by Chair/Meyer to continue the public hearing. C/Flamenbaum suggested that the CUP can be approved, bringing back the conditions. since a CUP had already been previously approved by the Commission for use of a restaurant on the site, albeit with a different design and density. The Development Review can be continued until such time that the issues are resolved. With approval of the CUP, the applicant will be able to market the use, and specific plan changes can be dealt with during the Development Review. The public hearing for the CUP can be closed at this time, directing staff to bring back a Resolution of Approval for live entertainment, on site consumption of alcohol, and a restaurant, as was previously approved. DCA/Fox suggested that the public hearing be continued, and not closed, since the project still has unresolved issues. It can be argued that an opportunity to address the conditions to be imposed, or to see the resolution to be adopted, was not given. The Commission voted upon the Motion made by C/Grothe and seconded by Chair/Meyer to continue the public hearing. The Motion CARRIED UNANIMOUSLY 3-0. Motion was made by C/Flamenbaum, and seconded by C/Grothe to direct staff to bring back a Resolution of Approval for CUP No. 93-4 for the July 26, 1993 meeting. The Motion CARRIED UNANIMOUSLY 3-0. Motion was made by C/Flamenbaum to continue the public hearing on Development Review No. 93-1, until such time that staff has received the requested information. DCA/Fox stated that the Commission needs to set a date certain to continue the public hearing. Chair/Meyer suggested that the matter be tabled, requesting the applicant to post the necessary funds to readvertise the public hearing when he is ready. He inquired if such an action would be satisfactory to the applicant. Syed Raza stated he was under the impression that all required information had already been supplied July 12, 1993 Page 5 to the staff. Usually, all the items requested from the Planning Department and Building Department are supplied when the project has been conditionally approved because the requested plans and studies are very expensive at this stage of development. Chair/Meyer explained that an accurate preliminary plan, reflecting a reasonable tolerances of what is to be built, is usually required for a Development Review. The amount and degree of information provided is not adequate for the Commission to make a decision at this time. Syed Raza requested specific direction as to what needs to be submitted. C/Flamenbaum stated that the applicant needs to comply with staff's recommendations regarding the elevator, the handicapped parking space, the easement, the off site grading authorization, the lighting in the parking lot, the Hillside Management Ordinance, the modification of the enormous crib wall, and access to the Radisson Hotel. AP/Searcy stated that staff needs preliminary grading plans to be able to determine that the design plans are accurate and can be built. Syed Raza indicated that a preliminary grading plan was submitted, but it was not done by a licensed civil engineer because the applicant first wants assurance that the project will be approved. Mr. Raza stated the a four week continuance would be acceptable. PT/Lungu stated that once the applicant submits a preliminary grading plan, the Engineering Department requires at least two weeks to review it. Then staff can begin to prepare the staff report. C/Flamenbaum, amending his motion, made a Motion to continue the Development Review No. 93-1 public hearing to the second meeting in August of 1993. C/Grothe seconded the motion. The Motion CARRIED UNANIMOUSLY 3-0. Chair/Meyer requested staff to give clear direction to the applicant on the information that must be provided. July 12, 1993 Page 6 PT/Lungu stated that the applicant needs to submit the following: a preliminary grading plan verifying the height of all the retaining walls; a lighting plan (the Commission concurred that a lighting plan can be conditioned); the easement must be accurately plotted on the site plan and sections; off -site grading authorization letter from Radisson Hotel; and verification of access from the Radisson Hotel to the project site. C/Flamenbaum reiterated his request for the following information: the elevator to meet handicap requirements, the handicapped parking space, the easement, the off site grading authorization, the lighting in the parking lot, the Hillside Management ordinance, the modification of the enormous crib wall so it is more attractive, pedestrian access to the Radisson Hotel through the parking lot, and all conditions laid out in the staff report. C/Grothe requested staff to revisit the number of parking spaces required for accuracy. Chair/Meyer made the following comments: he would rather see the applicant lose parking spaces than to create a parking space 8 feet by 18 feet long, which is essentially nonuseable; it does not seem practical to base off street parking on the number of employees; adequate parking is fine, and it is not practical to lose a reasonable project for one or two off street parking spaces; the retaining wall should be softened, reduced, or eliminated; if there are to be retaining walls, there should be landscaping plans that are realistic, screening the retaining walls with adequately sized plant material; the retaining walls should be designed to be part of the landscaping, like is done for golf courses; there should be some consideration made to condition security guards for the entertainment use; and the mitigated negative declaration should include the kind of impact this project will have on the intersection of Grand Ave. and Golden Springs. Chair/Meyer recessed the meeting at 8:10 p.m. The meeting was reconvened at 8:20 p.m.. July 12, 1993 Page 7 ADJOURNMENT: Chair/Meyer adjourned the meeting at 8:22 p.m. due to a lack of quorum. Respectively, James DeStefano Secretary Attest: David Meyer Chairman INTEROFFICE MEMORANDUM TO: Chairman, and Planning Commissioners FROM: Ann J. Lungu, Planning Technician q SUBJECT: Conditional Use Permit No. 93-4 and Development Review No. 93-1 DATE: July 8, 1993 Attached to this memorandum is a staff report for the above men- tioned project. The staff report is for your initial review in order to discuss outstanding concerns which are as follows: 1. Verification of the height of the retaining walls and restaurant structure; 2. Submittal of a preliminary grading plan to review the extent of proposed grading for the project site and effect upon the Radisson Hotel site. 3. The possibility of future intensification of use for large areas dedicated to storage and office located on the lower level of the restaurant. 4. Determination of a realistic number of employees and the effect on the proposed parking; Recommendation: It is recommended that the Planning Commission open the public hearing, receive the staff report, take testimony, and continue this project until the above mentioned concerns are resolved. City of Diamond Bar PLANNING COMMISSION Staff Report AGENDA ITEM NUMBER: 2 REPORT DATE: June 8, 1993 MEETING DATE: July 12, 1993 CASE/FILE NUMBER: Conditional Use Permit No. 93-4 and Development Review No. 93-1 APPLICATION REQUEST: Conditional Use. Permit is a request to allow live entertainment within a restaurant, the sale and on -site consumption of alcoholic beverages in the C-M Zone; Development Review is a request to allow the construction of a restaurant. PROPERTY LOCATION: 21671 E. Gateway Center Drive Diamond Bar, CA 91765 APPLICANT: Dr. Akbar Omar 2216 E. Merced Covina, CA 91790 PROPERTY OWNER: A R Leasing and Investment Inc. 1135 S. Sunset Ave., Suite 308 West Covina, CA 91770 BACKGROUND: The applicant, Dr Akbar Omar is requesting a Conditional Use Permit and Development Review for the purpose of constructing a restaurant with live entertainment. The proposed project site is a vacant lot within the Gateway Corporate Center located at 21671 E. Gateway Center Drive. The project site is 2.033 acres with an existing flat pad of approximately 51,000 square feet. Slopes located at the site vary from 50 to 100 percent at the northern and eastern boundaries, 25 to 50 percent at the western portion 1 of the site, and 1 to 10 percent at the south boundary and within the center portion of the site. Generally, the following zones and uses surround the project site: to the north is the Pomona Freeway and Orange Freeway interchange; to the east is the Commercial -Manufacturing -Billboard Exclusion -Unilateral Contract (C-M-BE-U/C) Zone and the Radisson Hotel; to the south and west is C-M-BE-U/C Zone. The project site has a draft General Plan Land Use designation of Professional Office (OP). On August 27, 1990, the Planning Commission approved Conditional Use Permit No. 90-70, a similar project without the ability to provide live entertainment. On August 26, 1991, the Planning Commission granted an extension of time and approval for live entertainment for Conditional Use Permit No. 90-70. The applicant did not exercise the approval and consequently the approval expired. In January 1993, the applicant submitted a new application to the City. At the June 28, 1993 Planning Commission meeting, the propose project was continued to the July 12, 1993 in order to allow the applicant additional time to complete an on -site traffic analysis. APPLICATION ANALYSIS: CONDITIONAL USE PERMIT: A Conditional Use Permit is required, pursuant to Chapter 22.28, Part 6 of the Code, for live entertainment within a restaurant which has an occupant load of at least 200 persons and the sale and on -site consumption of alcoholic beverages within the C-M Zone. The proposed project has a dance floor, bandstand area, and maximum occupancy of 238 persons. The dance area is 300 square feet. The bar/lounge area is 2,016 square feet with the ability to seat 85 persons. DEVELOPMENT REVIEW: Pursuant to Chapter 22.72, Section 020 of Ordinance No.5, any and all commercial projects which are new construction on vacant property will be subject to the Development Review process. This process ensures that development projects comply with all applicable local design guidelines, standards and ordinances with minimum adverse effects on surrounding properties and the environment. It also requires consistency with the draft General Plan which promotes high aesthetic and functional standards to complement and add to the physical, economic, and social character of Diamond Bar. The proposed project is commercial, new construction on vacant property. As such, is subject to Development Review. The applicant is proposing to construct an "up -scale" restaurant with several dining areas, bar/lounge, dance floor, bandstand area, kitchen, storage area, restrooms, offices, waiting area, balconies, and service yard area. The proposed restaurant structure is two stories and with exterior balconies approximately 13,800 square feet. The occupancy is 238 person. The lower level of the restaurant structure is to be utilized for offices, storage, and restrooms. Staff feel that it is unusual to have such large areas dedicated to storage and offices. It is possible to utilize these areas for banquet facilities in the future. Staf f s concern is that there is not enough parking on the site to accommodate the intensity of the use in the future. The architectural style of the restaurant structure is Contemporary Mediterranean. The architectural style differs from the existing buildings within the Gateway Corporate Center which is eclectic. The uniqueness of the architectural style of the restaurant will enhance the appearance of the Gateway Corporate Center. Exterior of the structure will be stucco in an off-white color. The roof will be constructed from clay "S" the in a terra cotta color. Brick veneer will be utilized as an accent on the round wall adjacent to the main entry of the restaurant structure. Awnings will be utilized above several windows. The awnings will be constructed from canvas in a dark teal color. The north elevation of the restaurant structure shows a series of walls. A cornice should be added to the walls to complement the cornice on the restaurant structure. The applicant has obtained architectural approval from the Gateway Corporate Center (see attachment). The following is a comparison of City required development standards Gateway Corporate Center development standards, and the proposed development standards for the restaurant structure. City Gateway - Lot 4 Project 1. Building 45' front setback; 45' front setback; setbacks: 0' 10' side setback; 135' & 200' plus top of slope rear side setback; 15' setback from top of slope 2. Heights: 13 times 9 stories or 1501, 2 stories, height - buildable area whichever is less 36' 3. Parking: 1 park- not addressed for 109 spaces provided ing space for every 3 restaurant use occupants 4. Parking Design: standard spaces - standard spaces - standard spaces - 8z' 8' x 181; aisle - 9' x 181; aisle - x 181; aisle - 261; 271; handicap must 261; handicap - 2 handicap - 1 per 40 be provided, size with 5' loading zone spaces - 9' x 18' not addressed adjacent with 5' loading zone adjacent 5. Landscaping: minimum 15% of the 10% devoted to Minimum 10% of entire gross usable lot landscaping lot or parcel area 3 The proposed project complies with City development standards except for the number of handicapped parking spaces provided. Code requires that a total of three handicapped parking space be provided. The applicant will be required to provide one additional handicapped parking space located adjacent to the main entrance of the restaurant. The proposed covered parking spaces are to be utilized for employees only. The proposed project complies with Gateway Corporate Center development standard except for drive aisle width and percentage of minimum landscaping. If the drive aisle width is changed to 27 feet, the minimum number of parking spaces required would not be satisfied. To satisfy Gateway Corporate landscaping requirement, it is possible to add landscaping to the unused western portion of the site. The applicant is required to submit a final landscape and irrigation plan for review and approval by the City before the issuance of a building permit. Reclaimed water is available within Gateway Corporate Center and could be utilized for this project. Appropriate lighting is required for the project site. The applicant is required to submit a lighting plan for review and approval by the City before the issuance of a building permit. The service yard area is located on the south side of the restaurant structure adjacent to the kitchen/storage area and screened from public view. This area is utilized for delivery access and storage of trash and recycling bins. The slopes within the project site vary. Slopes of 1 to 10 percent are located within the center and southern portion of the site. Slopes of 25 to 50 percent are located on the western portion of the site. Slopes of 50 to 100 percent are located on the northern and eastern portion of the site. Slopes of 1 to 10 percent and 50 to 100 percent will be effect by the construction of the restaurant structure. Grading will consist of approximately 2,500 cubic yard of earth for both cut and fill. Earth from the eastern portion of the site will be dispersed to the western portion of the site in order to create a more workable pad for contruction. Importing and exporting of earth will not occur with this project. Grading proposed on the eastern portion of the site will effect the adjacent property (Radisson Hotel site) to the east. The extent will be determined when a grading plan is submitted. The existing drainage capacity of the site may not be adequate with the construction of the proposed project. The applicant is required to provide a hydrology study and hydrology calculation showing the estimated run-off and capacity of the existing drainage system. If the existing drainage system is inadequate, the applicant is required to design an adequate drainage system to the satisfaction of the City Engineer. Retaining walls for the proposed project are located on the northern portion of the site. The retaining wall located at the top of slope area is a crib wall with a maximum height of 14 feet. The second retaining wall is locate in the parking lot area adjacent to the service yard and covered parking area. This retaining wall varies in height from five feet to seven feet. It will be constructed from concrete block and stuccoed to match the restaurant structure. A grading plan will be required for the verification of wall heights 4 The maximum height of the restaurant structure is 36 feet as indicated on the elevations. A grading plan will be required for the verification of the restaurant height. The Engineering Department has indicated that egress and ingress for the site is appropriate. on -site circulation and turning radii capabilities are demonstrated by the utilization of a truck templet on the site plan. The Engineering Department is satisfied that delivery trucks will complete the turning radii through out the site. The proposed project has been reviewed by the Engineering Department. The following are Engineering concerns: 1. The 10 foot Sanitary Sewer Easement on the north side of the project site must be accurately plotted on site plan and sections. No construction will be permitted on top of an easement. 2. An off -site grading authorization letter will be required from the adjacent property owner - Radisson Hotel. The Building and Safety Department has reviewed the proposed project. The following are Building and Safety concerns: 1. Elevator is required to meet State handicapped requirements; 2. Provide one additional handicapped parking space. Walnut Valley Sheriff Department has reviewed the proposed project. The following are Sheriff Department concerns: 1. Lighting: There is no lighting indicated in the parking lot area. It is recommended that the parking lot lighting be designed in a manner that provides a minimum of one lumen of light per square foot at ground level at any location in the parking area. Los Angeles Fire Department is reviewing the proposed project. At this time, their review is not completed. Fire Department comments will be available by the July 12, 1993 and will be incorporated into the proposed project. Hours of operation for the proposed restaurant are Sunday. through Saturday from it a.m. to 2 a.m. There will be approximately 20 employees with two work shifts. Ten employees per shift. Staff feels that the number of employees per shift is not realistic. More employees may be needed which will have an impact on the number of proposed parking spaces. South Coast Air Quality Management District (AQMD) requires the applicant to obtain permits for the control of emissions from broilers utilized in connection with a restaurant. Before the issuance of a Certificate of Occupancy, the applicant will be required to obtain all permits required by AQMD. In the future, the proposed project will need signage. At that time, a Planned Sign Program will need to be submitted to the. City for review 5 and approval. NOTICE OF PUBLIC HEARING: This item has been advertised in Inland Valley Daily Tribune on approximately 6 property owners site on June 81 1993. ENVIRONMENTAL ASSESSMENT: the San Gabriel Valli Tribune and the June 4, 1993. Notices were mailed to within a 500 foot radius of the project Although the proposed project could have a significant effect on the environment, there will not be a significant effect in this case because mitigation measures were incorporated into the proposed project and a Mitigated Negative Declaration has been prepared pursuant to the provisions of the California Environmental Quality Act (CEQA). RECOMMENDATIONS: Staff recommends that the Planning Commission continue the public hearing for this project. Prepared by: nn J Lung lanning Technician Attachments: Application Initial Study Exhibit "A" dated June 281 1993 - Site Plan, floor plan, elevations, and conceptual landscape plan Correspondence from the Walnut Sheriff Department dated June 17, 1993 Correspondence from Gateway Corporate Center architectural review dated March 4, 1993 Aerial Site diagram from Gateway Corporate Center Design Guidelines Slide presentation 51 CITY OF DIAMOND BAR Case# D 9 3 - -= ` - _` DEPARTMENT OF PLANNING Recvd___V 1i /q3 Cl-c° 93-f21660E. Copley Drive Suite 190 Fee $,7-- 714)396-5676 Fax (714)861-3117 Receipt ^Z CONDITIONAL USE PERMIT APPLICATION By Record Owner(s) Applicant Applicant's Agent Name Dr. Akbar Omar Dr. Akbar Omar SRA Architects Last name first) Address 2216 E. Merced 2216 E..Merced 12600 Central Ave. CityjaELE L-4 Cav Diamond Rar_ _rhino zip 91790 91790 91710 Phone(818) 919-0504 018) 919-0504 (714) 591-7441 Attach separate sheet if necessary, including names, addresses, and signatures of members of partnerships, joint ventures, and directors of corporations) CONSENT: I consent to the submission of the application accompanying this request Signed Date ALl recorded own Certification: I, the undersigned, hereby certify under.penalty of perjury that the information herein provided is correct to the best of my knowledge. Printed Name: Syed Raza Applicant or Agent) signs '' ...Date Applicant or Agent Location 21671 E. Gateway Center Dr., Diamond Bar, CA 91790 Street address or tract and tot number) zoning CM HNM 111337 Previous Cases Present Use of Site NOt used, vacant. Use applied for Restaurant Project Size (gross acres) 1.33 Acres Domestic Water Source Yes Project density N/A Company/District Walnut Water Method of Sewage disposal Public Sewer Sanitation District L.A. County 5anitatior Grading of Lots by Applicant? Yes X No Show necessary grading design an site plan or tent map) APPROPRIATE BURDENS OF.PROOF MUST ACCOMPANY REQUEST LEGAL DESCRIPTION (all ownership comprising the proposed lot (s)/parcel(s) A PORTION OF LOT 4 AS PER TRACT NUMBER 39679 IN THE CITY OF DIAMOND BAR, C'.CnTTNTV QV T.C)S ANGE-LES, STATN._GE r.A.LI_F_4RALTA, AS-2ZU RE('()ET)F—n T BOOK 1083 PAGES 14-21 OF TRACT MAPS IN THE OFETCF, OF _TT F cn[TNTy gF(rnRDER OF SAID COUNTY. Area devoted to structures Residential Project: N/A Proposed density 9200 Sq. FtLandscaping/Open space 8866 Sq. Ft. and N/A gross area) N/A Units/Acres) No. of lots) Parking Required Provided Standard 112 112 Compact 0 O Handicapped 2 2 Total staff use) PRO IECT NUMBER( s ) : INITIAL STUDY QUESTIONNAIRE A. GENERAL INFORMATION Project Applicant (Owner): Project Representative: Dr. Akbar Omar NAME 2216 E. Merced ADDRESS West Covina, CA 91790 818) 919-0504 SRA Arrhi ter_ts NAME 12600 Central _Ave, ADDRESS Chino, CA 91710 714) 591-7441 PHONE # PHONE # 1. Action requested and project description: This is a new restaurant project with wet bar and dance floor. 2. Street location of project: 21671 E. Gateway Center Dr. Diamond Bar, CA 91790. 3a. Present use of site: Vacant 3b. Previous use of site or structures: Vacant 4. Please list all previous cases if any) related to this project: None 5. Other related permit/approvals required. Specify type and granting agency. None 6. Are you planning future phases of this project? Y ON If yes, explain: N/A 7. Project Area: Covered by structures, paving: 49,159 S . Ft. Landscaping, open space: _ 8,866 Sq, Ft. Total Area: 58,025 Sq. Ft. 8. Number of floors: 2 9. Present zoning: CM 10. Water and sewer service: Yes Walnut Water L.A. County Sanitn. Domestic Public Water Sewers B. ENVIRONMENfAL INMRMTI0N Environmental Setting --Project Site a. Existing use/structures Done, Vacant b. Topography/slopes Flat pad, slopes at boundry of site. c. Vegetation Groundcover at slopes d. Animals None e. Watercourses None f. Cultural/historical resources None 9. Other None 2. Environmental Setting --- Surrounding Area a. Existing uses structures (types, densities): Commercial hotel directly adjacent- high density b. Topography/slopes Slopes at boundry c. Vegetation Groundcover at boundry d. Animals None e. Watercourses None f, Cultural/historical resources None g. Other None Answers are not required if the area does not contain natural, undeveloped land. 3. Are there any major trees on the site, including oak trees? YES O If yes, type and number: N/A 4. Will any natural watercourses, surface flow patterns, etc., be changed through project development?: YES S If yes, explain: N/A 5. Grading: Will the project require grading? YES NO If yes, how many cubic yards? 2500 Cu. Yds. + Will it be balanced on site? YES NO If not balanced, where will dirt be obtained or deposited? N/A G. Are there any identifiable landslides or other major geologic hazards on the property (including uncompacted fill)? YES NO If yes, explain: N/A 7. Is the property located within a high fire hazard area (hillsides with moderately dense vegetation)? YES G Distance to nearest fire station: 1/2 Mile (Grand Ave. } 8. Noise: Existing noise sources at site: None Noise to be generated by project: None 9. Fumes: Odors generated by project: None Could toxic fumes be generated? No 10. What energy -conserving designs or material will be used? This project uc;PS i nslil ated wal I and the rai l J nCt },a; insulated Does service exist at site? D N Y N If yes, do purveyors have capacity to meet demand of project and all other approved projects? ( Y ) N Y N If domestic water or public sewers are not available, how will these services be provided? Domestic re available Residential Projects: N/A 11. Number and type of units: N/A 12. Schools: N/A What school district(s) serves the property? N/A Are existing school facilities adequate to meet project needs? YES NO N/A If not, what provisions will be made for additional classrooms? Non -Residential projects: 13. Distance to nearest residential use or sensitive use (school, hospital, etc.) 1/2 mile 14. Number and floor area of buildings- 1 building- 13,816 Sic . Ft. 15. Number of employees and shifts: 2 shifts 16. Maximum employees per shift: 10 17. Operating hours: 11 AM to 2 AM 18. Identify any: End products None Waste products None Means of disposal N/A 19. Do project operations use, store or produce hazardous substances such as oil. pestic , chemicals, paints, or radioactive materials? YES I( T) If yes, explain NZA 20. Do your operations require any pressurized tanks? YES h0 If yes, explain N/A 21. Identify any flammable, reactive or explosive materials to be located on - site. bone 22. Will delivery or shipment trucks travel through residential areas to reach the nearest highway? YES If yes, explain N/A f CERTIFICATION: I hereby certify that the statements furnished above and in the attached exhibits present the data and information required for this initial evaluation to the best of my ability, and that the facts, statements, and information presented are true and corrects to the best of my knowledge and belief. Z-v Date Signature For: AFL61N1 CONDITIONAL USE PERMIT CASE —BURDEN OF PROOF In addition to the information required in the application, the applicant shall substantiate to the satisfaction of the Zoning Board and/or Commission, the following facts: A. That the requested use at the location proposed will not: 1. Adversely affect the health, peace, comfort or welfare of persons residing or working in the surrounding area, or 2. Be materially detrimental to the use, enjoyment or valuation of property of other persons located in the vicinity of the site, or 3. jeopardize, endanger or otherwise constitute a menace to the public health, safety or general welfare. See Attached B. That the proposed site is adequate in size and shape to accommodate the yards, walls,.fences, parking and loading facilities, landscaping and other development features prescribed in this Title 22, or as is otherwise required in order to integrate said use with the uses in the surrounding area. See Attached Sheet C. That the proposed site is adequately served: 1. By highways or streets of sufficient width and improved as necessary to carry the kind and quantity of traffic such use would generate, and 2. By other public or private service facilities as are required. See Attached Sheet Conditional Use Permit Case -Burden of Proof A. (1,2 and 5) The project is located adjacent to the 60 and 57 freeways next to a large hotel. This is-al,o a commercial -area with no residences close by. This restaurant will not adversely affect the health, peace, com- fort, or welfare of people living and working close by but will improve these conditions by giving facilities to the hotel guests, and other consumers in the area. This project will also _raise the values of properties close by and be enjoyable to people in the vicinity. this project's use is helpful and consistant with the surrounding: properties, therefore it will not jeopardize, endanger, or constitute a menace to the public health, safety or general welfare. 10 The project size, including parking, landscape, and all other require- ments is well suited to the property. As shown on our site plan, the building only takes up 16% of the site area, and parking, landscape and other requirements fit well within the site. C. (1 and 2) This project is served by the 57 and 60 freeways that are directly adjacent to the site. Diamond Bar Boulevard is one of the freeway exits that can be used to reach the project. This is a major road and should be adequate to serve this projects traffic quantities. The other surface streets used to reach the project are also large enough to serve traffic needs. Utilities for the project are readily available with water, sewer, gas and electric along Gateway Center Drive. Any other service, public or private can be served by the streets. staff use) PROJECT NI ASER(s) : INITIAL STUDY QUESTIONNAIRE A. GENERAL INFORMATION Project Applicant (Owner): Project Representative: Dr. Akbar Omar NAME NAME 2216 E. Merced 12600 Central Ave. ADDRESS ADDRESS West Covina, CA 91790 Chino, CA 91710 818) 919-0504 (714) 591-7441 PHONE # PHONE # 1. Action requested and project description: This is a new restaurant project with wet bar and dance floor. 2. Street location of project: 21671 E. Gateway Center Dr. Diamond Bar, CA 91790. 3a. Present use of site: Vacant 3b. Previous use of site or structures: Vacant 4. Please list all previous cases if any) related to this project: None 5. Other related permit/approvals required. Specify type and granting agency. None 6. Are you planning future phases of this project? Y ON If yes, explain: N/A 7. Project Area: Covered by structures, paving: 49,159 Sq. Ft. Landscaping, open space: 8,866 Sq. Ft. Total. Area: 58,025 Sq. Ft. 8. Number of floors: 2 9. Present zoning: CM 10. Water and sewer service: Yes Walnut Water L.A. County Sanitn f Domestic Public Water Sewers B. ENVIRONMENTAL INFORMATION Environmental Setting --Project Site a. Existing use/structures None, Vacant b. Topography/slopes Flat pad, slopes at boundry of site. c. Vegetation Groundcover at slopes d. Animals None e. Watercourses None f. Cultural/historical resources None 9. Other None 2. Environmental Setting -- Surrounding Area a. Existing uses structures (types, densities): Commercial b. Topography/slopes slopes at boundry c. Vegetation Groundcover at boundry d. Animals None e. Watercourses None f. Cultural/historical resources Norte g. Other None Answers are not required if the area does not contain natural, undeveloped land. 3. Are there any major trees on the site, including oak trees? YES NO If yes, type and number: N/A 4. Will any natural watercourses, surface flow patterns, etc., be changed through project development?: YES NO If yes, explain: N/A 5. Grading: Will the project. require grading? YES NO If yes, how many cubic yards? 2500 Cu. Yds. + Will it be balanced on site? YES NO If not balanced, where will dirt be obtained or deposited? 6. Are there any identifiable landslides or other major geologic hazards on the property (including: uncompacted fill)? YES NO If yes, explain: N/A 7. Is the property located within a high fire hazard area (hillsides with moderately dense vegetation)? YES NO Distance to nearest fire station: 1/2 Mile (Grand Ave.) 8. Noise: Existing noise sources at site: None Noise to be generated by project: None 9. Fumes: Odors generated by project: None Could toxic fumes be generated? No 10. What energy -conserving designs or material will be used? This project insulated attic space. _, Does service exist at site? OY N Y N v If yes, do purveyors haveC F capacity to meet demand of project and all other approved projects? ( 7 } N Y N If domestic water or public sewers are not available, how will these services be provided? Domestic water d re available Residential Projects: N/A 11. Number and type of units: N/A 12. Schools. N/A What school district($) serves the property? N/A Are existing school facilities adequate to meet project needs? YES NO N/A If not, what provisions will be made for additional classrooms? N/A Non --Residential projects: 13. Distance to nearest residential use or sensitive use (school, hospital, etc. ) 1/2 mile 14. Number and floor area of buildings: 1 building-_ 13 _. Ft. 15. Number of employees and shifts: 2 shifts 16. Maximum employees per shift: 10 17. Operating hours. 11 AM to 2 AM 18. Identify any: End products None Waste products None Means of disposal N/A 19. Do project operations use, store or produce hazardous substances such as oil. pestic , chemicals, paints, or radioactive materials? YES (f) If yes, explain N/A 20. Do your operations require any pressurized tanks? YES NO If yes, explain N/A 21. Identify any flammable, reactive or explosive materials to be located on - site. None 22. Will delivery or shipment trucks travel through residential areas to reach the nearest highway? DES (B If yes, explain N/A CERTIFICATION; I hereby certify that the statements furnished above and in the attached exhibits present the data and information required for this initial evaluation to the best of my ability, and that the facts, statements, and information presented are true and correct to the best of my knowledge and belief. Date Signature For. _ June 17, 1993 Ann J. Lungu Planning Technician City of Diamond Bar 21660 E. Copley Dr. #100 Diamond Bar Ca. 91765 Dear Ann, This letter is in response to your project plans you sent me, known project. This project is located at in the City of Diamond Bar. request for my review of the as the DR. OMARIS RESTAURANT 21671 East Gateway Center Dr. I have reviewed the preliminary plans, and my first observation was that the plan has no parking lot lights drawn in. I recommend that the parking lot lighting be designed in a manner that provides a minimum of "1 LUMEN OF LIGHT PER SQUARE FOOT" at ground level, at any location in the parking area. There are only 2 HANDICAPPED parking spaces noted on the drawing, and with the number of spaces provided (109), 3 HANDICAPPED spaces are required. The parking lot requirements are based on a ratio of 1 space per 3 persons, including employees. According to the plans the employees will occupy several parking spaces depending on which shift (2 shifts) they are working. This will cut down on the available parking for the customers. QUESTION: If the parking requirements exceed the parking capacity, where will the overflow vehicles be parked since the street, Gateway Center Dr., is posted "NO PARKING ANYTIME"? I am looking forward to working with you on this project as it progresses. Sincer y, 6- D pu Larrya66- ter Walnut Sheriff Station 9 DIAMOND BAR BUSINESS ASSOCIATES 1661 HANOVER ROAD • CITY OF INDUSTRY, CALIFORNIA 91748 • FAX (BIB) 9)3.6169 • TELEPHONE (818) 913-00W March 4, 1993 Mr. Dale Bradbury SYED RAZA ASSOCIATES ARCHITECTS 12600 Central Avenue Chino, California 91710 RE: ARCHITECTURAL COMMITTEE REVIEW GATEWAY CORPORATE CENTER DR. OMAR'S RESTAURANT 21671 EAST GATEWAY CENTER DRIVE (LOT 4) DIAMOND BAR, CALIFORNIA Dear Mr. Bradbury: The Architectural Committee has received the following revised preliminary drawings for review for conformance with the C.C. & R's and the Gateway Corporate Center Design Guidelines: 1. Sheet 1, site plan and area analysis; Sheet 2, floor plan; Sheet 3, lower floor plan, Sheet 4 roof plan; Sheet 5, north and south elevations; Sheet 6, southwest and east elevations. (All date stamped March 4, 1993). 2. Conceptual Landscape plan prepared by Richard Johnson and Section A Sheet un-numbered) date stamped March 4, 1993. The Architectural Committee has reviewed and approved you plans, subject the following items: 1. - SHEET 1: A. The three foot wide curbed planters in lieu of the three foot by four foot cubed planters required at a maximum of six stall intervals per Section 2.7.6. and Exhibit "X" of the design guidelines, are approved. B • Service area and trash enclosure shall be constructed in accordance with sections 2.6.1., 2.6.2 and Exhibit IX of the design guidelines. Mr. Dale Bradbury SYED RAZA ASSOCIATES ARCHITECTS March 4, 1993 Page 2 C. The retaining wall between the upper and lower parking areas exceeds eight feet in total height. The wall is approved in . accordance with Section 2.5.4. The wall shall have the same finish and color as the adjacent building per Section 2.5.5. D. The crib wall (retaining wall) at the northeast end of the parking lot, facing the freeway is approximately twenty feet high and one hundred and eighty feet long. The wall is approved per Section 2.5.4. Provide approved plant materials throughout the pockets of the crib wall to prevent soil erosion and soften the visual effect of the wall, as well as an automatic irrigation system. E. Plan indicates a total of one hundred and fourteen parking stalls with nine tandum spaces. Parking is approved subject to approval by the City of Diamond Bar. F. Indicate location of parking lot pole lighting in accordance with Section 6.2. G. Provide concrete curbs at all landscape/paving borders per Section 4.3.2 and Exhibits X and XIX. 2. SHEET 5 and 6: A. Section 3.6.5 requires special design review for materials not listed in Section 3.6. The Buff colored clay "S" roof tile and white exterior machine applied stucco are approved, as well as the sloped roofs. B. The building may be framed using wood studs if they are completely sheathed in plywood and the exterior plaster is applied over Aqua K- Lath. C. Submit building signage for approval. Entry monument sign is approved in general conformance with Section 5.2 and Exhibit XX. Uniformity of design is intended for office buildings. Mr. Dale Bradbury SYED RAZA ASSOCIATES ARCHITECTS March 4, 1993 Page 3 3. BUILDING SECTION: A. Buildings closer than five feet from the top of a slope require special approval per Section 2.2.10. The building projection over the slope is approved, however, it must be certified by a Civil Engineer and approved by the Building & Safety Department. The required rear setback is five feet (5') from the property line or fifteen feet (15' ) when adjacent to a street per section 2.2.8-D. Please submit two (2) complete sets of the construction drawings for approval when they are completed, including Architectural, Structural, Civil, Landscape, Mechanical and Electrical plans. Enclosed are two sets of approved stamped preliminary plans dated March 4, 1993. Very Truly Yours, THE ARCHITECTURAL COMMITTEE cc: Ben Reiling, Member Byron Pinckert, Member Dr. Omar encl. qj.1. 9111 iij5 I 1 ggg 161 F eEE I 1111 o R K Ln P 1 c op .. . n is paiili Z n F I Ili x 1 r r1s ' I 3 5 a i z9 7 O r4 is l:'Irli:itri Y CAS U ja{Dmp Is, iaN I: ijE''I 1111 n z a S R 0 88,559.88 SF 7 n'I31 ACRES L LOT NUMBER:,--- DIAMOND BAR r GATEWAY CORPORATE CEO »w X CK City of Diamond Bar PLANNING COMMISSION Staff Report AGENDA ITEM NUMBER: 2 REPORT DATE: June 8, 1993 MEETING DATE: July 12, 1993 CASE/FILE NUMBER: Conditional Use Permit No. 93-4 and Development Review No. 93-1 APPLICATION REQUEST: Conditional Use. Permit is a request to allow live entertainment within a restaurant, the sale and on -site consumption of alcoholic beverages in the C-M Zone; Development Review is a request to allow the construction of a restaurant. PROPERTY LOCATION: 21671 E. Gateway Center Drive Diamond Bar, CA 91765 APPLICANT: Dr. Akbar Omar 2216 E. Merced Covina, CA 91790 PROPERTY OWNER: A R Leasing and Investment Inc. 1135 S. Sunset Ave., Suite 308 West Covina, CA 91770 .- BACKGROUND: The applicant, Dr Akbar Omar is requesting a Conditional Use Permit and Development Review for the purpose of constructing a restaurant with live entertainment. The proposed project site is a vacant lot within the Gateway Corporate Center located at 21671 E. Gateway Center Drive. The project site is 2.033 acres with an existing flat pad of approximately 51,000 square feet. Slopes located at the site vary from 50 to 100 percent at the northern and eastern boundaries, 25 to 50 percent at the western portion 1 of the site, and 1 to 10 percent at the south boundary and within the center portion of the site. Generally, the following zones and uses surround the project site: to the north is the Pomona Freeway and Orange Freeway interchange; to the east is the Commercial -Manufacturing -Billboard Exclusion -Unilateral Contract (C-M-BE-U/C) Zone and the Radisson Hotel; to the south and west is C-M-BE-U/C Zone. The project site has a draft General Plan Land Use designation of Professional Office (OP). On August 27, 1990, the Planning Commission approved Conditional Use Permit No. 90-70, a similar project without the ability to provide live entertainment. On August 26, 1991, the Planning Commission granted an extension of time and approval for live entertainment for Conditional Use Permit No. 90-70. The applicant did not exercise the approval and consequently the approval expired. In January 1993, the applicant submitted a new application to the City. At the June 28, 1993 Planning Commission meeting, the propose project was continued to the July 12, 1993 in order to allow the applicant additional time to complete an on -site traffic analysis. APPLICATION ANALYSIS: CONDITIONAL USE PERMIT: A Conditional Use Permit is required, pursuant to Chapter 22.28, Part 6 of the Code, for live entertainment within a restaurant which has an occupant load of at least 200 persons and the sale and on -site consumption of alcoholic beverages within the C-M Zone. The proposed project has a dance floor, bandstand area, and maximum occupancy of 238 persons. The dance area is 300 square feet. The bar/lounge area is 21016 square feet with the ability to seat 85 persons. DEVELOPMENT REVIEW: Pursuant to Chapter 22.72, Section 020 of Ordinance No.5, any and all commercial projects which are new construction on vacant property will be subject to the Development Review process. This process ensures that development projects comply with all applicable local design guidelines, standards and ordinances with minimum adverse effects on surrounding properties and the environment. It also requires consistency with the draft General Plan which promotes high aesthetic and functional standards to complement and add to the physical, economic, and social character of Diamond Bar. The proposed project is commercial, new construction on vacant property. As such, is subject to Development Review. The applicant is.proposing to construct an "up -scale" restaurant with several dining areas, bar/lounge, dance floor, bandstand area, kitchen, storage area, restrooms, offices, waiting area, balconies, and service yard area. The proposed restaurant structure is two stories and with exterior balconies approximately 13,800 square feet. The occupancy is 238 person. The lower level of the restaurant structure is to be utilized for offices, storage, and restrooms. Staff feel that it is unusual to have such large areas dedicated to storage and offices. It is possible to utilize these areas for banquet facilities in the future. Staffs concern is that there is not enough parking on the site to accommodate the intensity of the use in the future. The architectural style of the restaurant structure is Contemporary Mediterranean. The architectural style differs from the existing buildings within the Gateway Corporate Center which is eclectic. The uniqueness of the architectural style of the restaurant will enhance the appearance of the Gateway Corporate Center. Exterior of the structure will be stucco in an off-white color. The roof will be constructed from clay "S" the in a terra cotta color. Brick veneer will be utilized as an accent on the round wall adjacent to the main entry of the restaurant structure. Awnings will be utilized above several windows. The awnings will be constructed from canvas in a dark teal color. The north elevation of the restaurant structure shows a series of walls. A cornice should be added to the walls to complement the cornice on the restaurant structure. The applicant has obtained architectural approval from the Gateway Corporate Center (see attachment). The following is a comparison of City required development standards Gateway Corporate Center development standards, and the proposed development standards for the restaurant structure. City Gateway - Lot 4 Project 1. Building 45' front setback; 45' front setback; setbacks: 0' 10' side setback; 135' & 200' plus top of slope rear side setback; 15' setback from top of slope 2. Heights: 13 times 9 stories or 1501, 2 stories, height - buildable area whichever is less 36' 3. Parking: 1 park- not addressed for 109 spaces provided ing space for every 3 restaurant use occupants 4. Parking Design: standard spaces - standard spaces - standard spaces - 8k' 8' x 181; aisle - 9' x 181; aisle - x 181; aisle - 261; 271; handicap must 261; handicap - 2 handicap - 1 per 40 be provided, size with 5' loading zone spaces - 9' x 18' not addressed adjacent with 5' loading zone adjacent 5. Landscaping: minimum 15% of the 10% devoted to Minimum 10% of entire gross usable lot landscaping lot or parcel area 3 The proposed project complies with City development standards except for the number of handicapped parking spaces provided. Code requires that a total of three handicapped parking space'be provided. The applicant will be required to provide one additional handicapped parking space located adjacent to the main entrance of the restaurant. The proposed covered parking spaces are to be utilized for employees only. The proposed project complies with Gateway Corporate Center development standard except for drive aisle width and percentage of minimum landscaping. If the drive aisle width is changed to 27 feet, the minimum number of parking spaces required would not be satisfied. To satisfy Gateway Corporate landscaping requirement, it is possible to add landscaping to the unused western portion of the site. The applicant is required to submit a final landscape and irrigation plan for review and approval by the City before the issuance of a building permit. Reclaimed water is available within Gateway Corporate Center and could be utilized for this project. Appropriate lighting is required for the project site. The applicant is required to submit a lighting plan for review and approval by the City before the issuance of a building permit. The service yard area is located on the south side of the restaurant structure adjacent to the kitchen/storage area and screened from public view. This area is utilized for delivery access and storage of trash and recycling bins. The slopes within the project site vary. Slopes of 1 to 10 percent are located within the center and southern portion of the site. Slopes of 25 to 50 percent are located on the western portion of the site. Slopes of 50 to 100 percent are located on the northern and eastern portion of the site. Slopes of 1 to 10 percent and 50 to 100 percent will be effect by the construction of the restaurant structure. Grading will consist of approximately 2,500 cubic yard of earth for both cut and fill. Earth from the eastern portion of the site will be dispersed to the western portion of the site in order to create a more workable pad for contruction. Importing and exporting of earth will not occur with this project. Grading proposed on the eastern portion of the site will effect the adjacent property (Radisson Hotel site) to the east. The extent will be determined when a grading plan is submitted. The existing drainage capacity of the site may not be adequate with the construction of the proposed project. The applicant is required to provide a hydrology study and hydrology calculation showing the estimated run-off and capacity of the existing drainage system. If the existing drainage system is inadequate, the applicant is required to design an adequate drainage system to the satisfaction of the City Engineer. Retaining wails for the proposed project are located on the northern portion of the site. The retaining wall located at the top of slope area is a crib wall with a maximum height of 14 feet. The second retaining wall is locate in the parking lot area adjacent to the service yard and covered parking area. This retaining wall varies in height from five feet to seven feet. It will be constructed from concrete block and stuccoed to match the restaurant structure. A grading plan will be required for the verification of wall heights 4 The maximum height of the restaurant structure is 35 feet as indicated on the elevations. A grading plan will be required for the verification of the restaurant height. The Engineering Department has indicated that egress and ingress for the site is appropriate. on -site circulation and turning radii capabilities are demonstrated -by the utilization of a truck templet on the site plan. The Engineering Department is satisfied that delivery trucks will complete the turning radii through out the site. The proposed project has been reviewed by the Engineering Department. The following are Engineering concerns: 1. The 10 foot Sanitary Sewer Easement on the north side of the project site must be accurately plotted on site plan and sections. No construction will be permitted on top of an easement. 2. An off -site grading authorization letter will be required from the adjacent property owner - Radisson Hotel. The Building and Safety Department has reviewed the proposed project. The following are Building and Safety concerns: 1. Elevator is required to meet State handicapped requirements; 2. Provide one additional handicapped parking space. Walnut Valley Sheriff Department has reviewed the proposed project. The following are Sheriff Department concerns: 1. Lighting: There is no lighting indicated in the parking lot area. It is recommended that the parking lot lighting be designed in a manner that provides a minimum of one lumen of light per square foot at ground level at any location in the parking area. Los Angeles Fire Department is reviewing the proposed project. At this time, their review is not completed. Fire Department comments will be available by the July 12, 1993 and will be incorporated into the proposed project. Hours of operation for the proposed restaurant are Sunday through Saturday from 11 a.m. to 2 a.m. There will be approximately 20 employees with two work shifts. Ten employees per shift. Staff feels that the number of employees per shift is not realistic. More employees may be needed which will have an impact on the number of proposed parking spaces. South Coast Air Quality Management District (AQMD) requires the applicant to obtain permits for the control of emissions from broilers utilized in connection with a restaurant. Before the issuance of a Certificate of occupancy, the applicant will be required to obtain all permits required by AQMD. In the future, the proposed project will need s.ignage. At that time, a Planned Sign Program will need to be submitted to thecity for review 5 and approval. NOTICE OF PUBLIC HEARING: This item has been advertised in the San Gabriel Valley Tribune and the Inland Valley Daily Tribune on June 4, 1993. Notices were mailed to approximately 6 property owners within a 500 foot radius of the project site on June 8, 1993. ENVIRONMENTAL ASSESSMENT: Although the proposed project could have a significant effect on the environment, there will not be a significant effect in this case because mitigation measures were incorporated into the proposed project and a Mitigated Negative Declaration has been prepared pursuant to the provisions of the California Environmental Quality Act (CEQA). RECOMMENDATIONS: Staff recommends that the Planning Commission continue the public hearing for this project. Prepared by: " '/21 nn J Lung lanning Technician Attachments: Application Initial Study Exhibit "A" dated June 28, 1993 - Site Plan, floor plan, elevations, and conceptual landscape plan Correspondence from the Walnut Sheriff Department dated June 17, 1993 Correspondence from Gateway Corporate Center architectural review dated March 4, 1993 Aerial Site diagram from Gateway Corporate Center Design Guidelines Slide presentation C CITY OF DIAMOND BAR DEPARTMENT OF PLANNING. 21660 E. Copley Drive Suite 190 714)396-5676 Fax (714)861-3117 CONDITIONAL USE PERMIT APPLICATION Record Owner(s) Name Dr . Akbar Omar Last name first) Address 2216 E. Merced city (')- Co v Applicant Dr. Akbar Omar 2216 E..Merced Zip 91790 91790 Phone 018) 919-0504 018) 919-0504 Case# D 9 3 -- Recvd I Fee $ 000, f7- Receipt By Applicant's Agent SRA Architects 12600 Central Ave. 91710 714) 591-7441 Attach separate sheet if necessary, including names, addresses, and signatures of members of partnerships, joint ventures, and directors of corporations) CONSENT: I consent to the submission of the application accompanying this request Signed Date All recorded ow Certification: I, the undersigned, hereby certify under penalty of perjury that the information herein provided is correct to the best of my knowledge. Printed Name: Syed Raza Applicant or Agent) Sign Location 216-71 E. Date pplicant or Agentcl:- Gateway Center Dr., Diamond Bar, Street address or tract and lot number) Zoning CM HNM 111337 Previous cases Present Use of Site NOt used, vacant. Use applied for Restaurant Project Size (gross acres) 1.33 Acres Domestic Water Source Yes CA 91790 Project density N/A Company/District Walnut Water Method of Sewage disposal Public Sewer Sanitation District L.A. County Sanitatioi Grading of Lots by Applicant? Yes x No Show necessary grading design on site plan or tent map) APPROPRIATE BURDENS OF.PROOF MUST ACCOMPANY REQUEST LEGAL DESCRIPTION (all ownership comprising the proposed lot(s)/parcel(s) A PORTION OF LOT 4 AS PER TRACT NUMBER 39679 IN THE CITY OF DIAMOND BAR, CQ1JNTV nF T.nC Aj]rtF.r F c STAXZQF'CAL.TFIIRAIII.L, -45 RPR PFCORDrn IN BOOK1083PAGES14-21 OF TRACT MAPS IN THF-_OFFICE nF THE rnTTmly RyrnRnppOFSAIDCOUNTY. Area devoted to structures 9200 Sq. Ft Landscaping/Open space 8866 Sq. Ft. Residential Project: NSA and NSA gross area) Proposed density N/A Units/Acres) No. of lots) Parking Required Provided Standard 112 112 Compact 0 0 Handicapped 2 2 Total 114 114 0 staff use) PROJECT NU1i6ER ( s------------------ INITIAL STUDY QUESTIONNAIRE A. GENERAL INFORMATION Project Applicant (Owner): Project Representative: Dr. Akbar Omar NAME 2216 E. Merced ADDRESS West Covina, CA 91790 818) 919-0504 SRA Arc-hitects, NAME 12600 Central Ave. ADDRESS Chino, CA 91710 714) 591-7441 PHONE # PHONE # 1. Action requested and project description: This is a new restaurant project with wet bar and dance floor. 2. Street location of project: 21671 E. Gateway Center Dr. Diamond Bar, CA 91790. 3a. Present use of site: Vacant 3b. Previous use of site or structures: Vacant 4. Please list all previous cases if any) related to this project: None 5. Other related permit/approvals required. Specify type and granting agency. None 6. Are you planning future phases of this project? Y ON If yes, explain: N/A 7. Project Area- Covered by structures, paving: 49,159 Sq Ft. Landscaping, open space: 8,866 S . Ft. Total Area: S8,025 Sq. Ft. 8. Number of floors: 2 9. Present zoning: CM 10. Water and sewer service: Yes Walnut Water L.A. County Sanitn. Domestic Public Water Sewers B. ENVIRONMENTAL INFORMATION 1. Environmental Setting --Project Site a. Existing use/structures None, Vacant b. Topography/slopes Flat pad, slopes at boundry of site. c. Vegetation Groundcover at slopes d. Animals Non e. Watercourses None f. Cultural/historical resources None 9. Other None 2. Environmental Setting -- Surrounding Area a. Existing uses structures (types densities): Commercial hotel directly adjacent- high density b. Topography/slopes Slopes at boundry C. Vegetation Groundcover at boundry d. Animals None e. Watercourses None f. Cultural/historical resources None g, Other None Answers are not required if the area does not contain natural, undeveloped land. 3. Are there any major trees on the site, including oak trees? YES O If yes. type and number: N/A 4. Will any natural watercourses. surface flow patterns, etc.. be changedthroughprojectdevelopment?: YES NO If yes, explain: N/A 5. Grading: Will the project require grading? YES NO If yes, how many cubic yards? 2500 Cu. Yds. + Will it be balanced on site? YES NO If not balanced., where will dirt be obtained or deposited? N/A G. Are there any identifiable landslides or other major geologic hazards ontheproperty (including uncompacted fill)? YES S If yes, explain: N/A 7. Is the property located within a high fire hazard area (hillsides with moderately dense vegetation)? YES G Distance to nearest fire station: 1/2 Mile (Grand Ave.} 8. Noise: Existing noise sources at site: None Noise to be generated by project: None 9. Fumes; Odors generated by project: None Could toxic fumes be generated? No 10. What energy -conserving designs or material will be used? This insulated Does service exist at site? (D N Y N i If yes, do purveyors have capacity to meet demand of project and all other approved projects? Y N Y N If domestic water or public sewers are not available, how will these services be provided? Domesti or are available Residential Projects: N/A 11. Number and type of units: N/A 12. Schools: N/A What school district(s) serves the property? N/A Are existing school facilities adequate to meet project needs? YES NO N/A If not, what provisions will be made for additional classrooms? Non -Residential projects: 13. Distance to nearest residential use or sensitive use (school, hospital, etc.) 1/2 mile 14. Number and floor area of buildings: 1 buildi.n - 13 816 5 . Ft. 15. Number of employees and shifts: 2 shifts 16. Maximum employees per shift: 10 17. Operating hours: 11 AM to 2 AM 18. Identify any: End products None Waste products None Means of disposal N/A 19. Do project operations use. store or produce hazardous substances such as oil, pesticpW4, chemicals, paints, or radioactive materials? YES (T) If yes, explain N/A - 20. Do your operations require any pressurized tanks? YES ISO If yes, explain N/A 21. Identify any flammable, reactive or explosive materials to be located on- site. None 22. Will delivery or shipment trucks travel through residential areas to reach the nearest highway? YES { NU ) If yes, explain N/A U CERTIFICATION: I hereby certify that the statements furnished above and in the attached exhibits present the data and information required for this initial evaluation to the best of my ability, and that the facts, statements, and information presented are true and correct to the best of my knowledge and belief. Date Signature For: r CONDITIONAL USE PERMIT CASE -BURDEN OF PROOF In addition to the information required in the application, the applicant shall substantiate to the satisfaction of the Zoning Board and/or Commission, the following facts: A. That the requested use at the location proposed will not: 1. Adversely affect the health, peace, comfort or welfare of persons residing or working in the surrounding area, or 2. Be materially detrimental to the use, enjoyment or valuation of property of other persons located in the vicinity of the site, or 3. Jeopardize, endanger or otherwise constitute a menace to the public health, safety or general welfare. See Attached Sheet B. That the proposed site is adequate in size and shape to accommodate the yards, walls, fences, parking and loading facilities, landscaping and other development features prescribed in this Title 22, or as is otherwise required in order to integrate said use with the uses in the surrounding area. See Attached Sheet C. That the proposed site is adequately served: 1. By highways or streets of sufficient width and improved as necessary to carry the kind and quantity of traffic such use would generate, and Conditional Use Permit Case -Burden of Proof A. (1,2 and 3) The project is located adjacent to the 60 and 57 freeways next to a large hotel. This is -also a commercial area with no residences close by. This restaurant will not adversely affect the health, peace, com- fort, or welfare of people living and working close by but will improve these conditions by giving facilities to the hotel guests, and other consumers in the area. This project will also _raise the values of properties close by and be enjoyable to people in the vicinity. this project's use is helpful and consistant with the surrounding; properties, therefore it will not jeopordize, endanger, or constitute a menace to the public health, safety or general welfare. The project size, including parking, landscape, and all other require- ments is well suited to the property. As shown on our site plan, the building only takes up 16% of the site area, and parking, landscape and other requirements fit well within the site. C. (1 and 2) This project is served by the 57 and 60 freeways that are directly adjacent to the site. Diamond Bar Boulevard is one of the freeway exits that can be used to reach the project. This is a major road and should be adequate to serve this projects traffic quantities. The other surface streets used to reach the project are also large enough to serve traffic needs. Utilities for the project are readily available with water, sewer, gas and electric along Gateway Center Drive. Any other service, public or private can be served by the streets. B. ENVIRONMENTAL INFORMATION 1. Environmental Setting --Project Site a. Existing use/structures None, Vacant b. Topography/slopes Plat pad, slopes at boundry of site. c. Vegetation Groundcover at slopes d. Animals None e. Watercourses None f. Cultural/historical resources None g. Other None 2. Environmental Setting Surrounding Area a. Existing uses structures (types, densities): Commercial hotel directly adjacent- high density b. Topography/slopes Slopes at boundry c. Vegetation Groundcover at boundry d. Animals None e. Watercourses None f. Cultural/historical resources None g. Other None Answers are not required if the area does not contain natural, undeveloped land. t Does service exist at site? OY N Y N 0v If yes, do purveyors have capacity to meet demand of project and all other approved Oprojects? Y N Y N If domestic water or public sewers are not available, how will these services be provided?_ Domestic water and public- _-;ewer_are available Residential Projects: N/A 11. Number and type of units: N/A 12. Schools: N/A What school district(s) serves the property? N/A Are existing school facilities adequate to meet project needs? YES NO N/A If not, what provisions will be made for additional classrooms? Non --Residential projects: 13. Distance to nearest residential use or sensitive use (school, hospital, etc.) 1/2 mile 14. Number and floor area of buildings: 1 building-__13_Sq. Ft. 15. Number of employees and shifts,-2 shifts 16. Maximum employees per shift: 10 17. Operating hours: 11 AM to 2 AM 18. Identify any: End products !None Waste products None Means of disposal N/A CERTIFICATION: I hereby certify that the statements furnished above and in the attached exhibits present the data and information required for this initial evaluation to the best of my ability, and that the facts, statements, and information presented are true and correct to the best of my knowledge and belief. Date Signature For: I A&C AMZLS June 17, 1993 Ann J. Lungu Planning Technician City of Diamond Bar 21660 E. Copley Dr. #100 Diamond Bar Ca. 91765 Dear Ann, This letter is in response to your project plans you sent me, known project. This project is located at in the City of Diamond Bar. request for my review of the as the DR. OMARIS RESTAURANT 21671 East Gateway Center Dr. I have reviewed the preliminary plans, and my first observation was that the plan has no parking lot lights drawn in. I recommend that the parking lot lighting be designed in a manner that provides a minimum of "1 LUMEN OF LIGHT PER SQUARE FOOT" at ground level, at any location in the parking area. There are only 2 HANDICAPPED parking spaces noted on the drawing, and with the number of spaces provided (109), 3 HANDICAPPED spaces are required. The parking lot requirements are based on a ratio of 1 space per 3 persons, including employees. According to the plans the employees will occupy several parking spaces depending on which shift (2 shifts) they are working. This will cut down on the available parking for the customers. QUESTION: If the parking requirements exceed the parking capacity, where will the overflow vehicles be parked since the street, Gateway Center Dr., is posted "NO PARKING ANYTIME"? . I am looking forward to working with you on this project as it progresses. epu y, arry uter Walnut Sheriff Station DIAMOND BAR BUSINESS ASSOCIATES 1661 HANOVER ROAD • CITY OF INDUSTRY, CALVFORNIA 91748 • FAX (818) 913-6169 • TELEPHONE )818) 973.0030 March 4, 1993 Mr. Dale Bradbury SYED RAZA ASSOCIATES ARCHITECTS 12600 Central Avenue Chino, California 91710 RE: ARCHITECTURAL COMMITTEE REVIEW GATEWAY CORPORATE CENTER DR. OMAR'S RESTAURANT 21671 EAST GATEWAY CENTER DRIVE (LOT d) DIAMOND BAR, CALIFORNIA Dear Mr. Bradbury: The Architectural Committee has received the following revised preliminary drawings for review for conformance with the C.C. & R's and the Gateway Corporate Center Design Guidelines: 1. Sheet 1, site plan and area analysis; Sheet 2, floor plan; Sheet 3, lower floor plan, Sheet 4 roof plan; Sheet 5, north and south elevations; Sheet 6, southwest and east elevations. (All date stamped March 4, 1993). 2. Conceptual Landscape plan prepared by Richard Johnson and Section A Sheet un-numbered) date stamped March 4, 1993. The Architectural Committee has reviewed and approved you plans, subject the following items: 1. . SHEET 1: A. The three foot wide curbed planters in lieu of the three foot by four foot cubed planters required at a maximum of six stall intervals per Section 2.7.6. and Exhibit "X" of the design guidelines, are approved. B. Service area and trash enclosure shall be constructed in accordance with sections 2.6.1., 2.6.2 and Exhibit IX of the design guidelines_ Mr. Dale Bradbury SPED RALI ASSOCIATES ARCHITECTS March 4, 1993 Page 2 C. The retaining wall between the upper and lower parking areas exceeds eight feet in total height. The wall is approved in accordance with Section 2.5.4. The wall shall have the same finish and color as the adjacent building per Section 2.5.5. D. The crib wall (retaining wall) at the northeast end of the parking lot, facing the freeway is approximately twenty feet high and one hundred and eighty feet long. The wall is approved per Section 2.5.4. Provide approved plant materials throughout the pockets of the crib wall to prevent soil erosion and soften the visual effect of the wail, as well as an automatic irrigation system. E. Plan indicates a total of one hundred and fourteen parking stalls with nine tandum spaces. Parking is approved subject to approval by the City of Diamond Bar. F. Indicate location of parking lot pole lighting in accordance with Section 6.2. G. Provide concrete curbs at all landscape/paving borders per Section 4.3.2 and Exhibits X and XIX_ 2. SHEET 5and 6: A. Section 3.6.5 requires special design review for materials not listed in Section 3.6. The Buff colored clay "S" roof tile and white exterior machine applied stucco are approved, as well as the sloped roofs. B. The building may be framed using wood studs if they are completely sheathed in plywood and the exterior plaster is applied over Aqua K- Lath. C. Submit building signage for approval. Entry monument sign is approved in general conformance with Section 5.2 and Exhibit XX. Uniformity of design is intended for office buildings. Mr. Dale Bradbury SYED RAZA ASSOCIATES ARCHITECTS March 4, 1993 Page 3 3. BUILDING SECTION: A. Buildings closer than five feet from the top of a slope require special approval per Section 2.2. W. The building projection over the slope is approved, however, it must be certified by a Civil Engineer and approved by the Building & Safety Department. The required rear setback is five feet (5') from the property line or fifteen feet (15') when adjacent to a street per section 2.2.8-D. Please submit two (2) complete sets of the construction drawings for approval when they are completed, including Architectural, Structural, Civil, Landscape, Mechanical and Electrical plans. Enclosed are two sets of approved stamped preliminary plans dated March 4, 1993. Very Truly Yours, THE ARCHITECTURAL COMMITTEE cc: Ben Reiling, Member Byron Pinckert, Member Dr. Omar SITE DIAGRAM 0 50 100 200 Top--()f SLOPE ra. LOT NUMBER:4 -.z- r)jAy-OND BAR GATEWAY CbRPORATE - 88,559.88 SF 2.0331 ACRES 10' BLDG. SET BACK 2' P`RKG--SET BACK rl\ 45'13LDG. SET BACK 25' PRKG. SET BACK LL 3 Ol Io fi r , Lill og. 4 Ica. 4ks; _ li'' 1Cb -. '' r 4 , k ,ri" yZ', -'r'r 2•.- tic j i ., 'firyy44 r t _ 4f 31 T . f •`.4y,,, ' it - . ` .` ," .. 40 IPA MITIGATED NEGATIVE DECLARATION No. 93-7 June 4, 1993 Case Number: Conditional Use Permit No. 93-4, Development Review No. 93-1 Applicant: Dr. Akbar Omar 2216 E. Merced Covina, CA 91790 Proposal: Development Review No. 93-2 is a request to construct a two story structure on a vacant parcel. The two story structure is to be utilized as a restaurant with a lounge/bar and entertainment. Conditional Use Permit No. 93-4 is a request to include a lounge/bar and entertainment. A Conditional Use Permit is required pursuant to Chapter 22.28, Section 260 in order to permit entertainment in conjunction with a restaurant that will have an occupancy of more than 200 persons within the Commercial -Manufacturing (C-M) zone. Location: 21671 E. Gateway Center Drive Diamond Bar, CA 91965 Environmental Findings: The proposed project, as determined in the City of Diamond Bar, could have a significant effect on the environment, there will not be a significant effect in this case because the mitigation measures described on herein have been incorporated into the proposed project and a Mitigated Negative Declaration has been prepared. II. Discussion of Environmental Evaluation: Mitigated Negative Declaration. Explanation to supplement "Yes" and "Possible" answers given in the Initial Study. Environmental Impacts: 1. Earth. Will the proposal result in: b. Disruptions, displacements, compaction or overcovering of the soil? Yes. C. Changes in topography or ground surface relief features? Possibly. Explanation: The project site is a vacant lot with slopes ranging from 1 to 10 percent, 25 to 50 percent, and 50 to 100 percent. A flat pad exists within the site and slopes at the boundaries of the site. In order to construct the restaurant structure, 2,500 cubic yards of soil will be utilized for cut and 2,500 cubic yards of soil will be utilized for fill. There will be no importing or exporting of soil for the proposed project Mitigation: The 5, 000 cubic yards of soil will be balanced on the site. Grading for the proposed project is required to comply with the Hillside Management Ordinance No.7 1992). 3. water. Will the proposal result in: b. Changes in absorption rates, drainage patterns, or the rate and amount of surface run-off? Yes. Explanation: Due to the. proposed grading and the construction of structures drainage patterns and surface run-off will change. Mitigation: The applicant is required to provide drains which will has the capacity to accept surface run-off that will result from the proposed project. The applicant is also required to comply with the Hillside Management Ordinance No. 7 (1992) which provides guideline for drainage patterns and surface run-off. 7. Light and Glare. Will the proposal result in: a. Significant new light and glare or contribute significantly to existing levels of light and glare? Possibly. Explanation: The proposed site is an undeveloped parcel. With the development of a restaurant, new light and possible glare will be introduced within the surrounding area. Mitigation• The proposed location of the parking area is below street grade and set back from the front property line adjacent to Gateway Center Drive) by 25 feet. This 25 foot area incorporates a landscaped berm. This will eliminate the glare of headlights from cars within the parking lot area to the street or adjacent properties. All lighting for the project is required to be positioned in a manner that will shield glare to adjacent properties and the public right-of-way. 13. Transportation/circulation: Will the proposal result in: a. Generation of substantial additional vehicular movement? Possibly. Explanation The development of the proposed restaurant on a vacant site will cause additional vehicular movement. f. Increase in traffic hazards to motor vehicles, bicyclists, or pedestrians? Possibly. Explanation• The traffic study and final EIR for Gateway Corporate Center identified one restaurant as a planned used within the Gateway Corporate Center development along with a restaurant facility within a hotel. At this time, Gateway Corporate Center has a restaurant facility within a hotel. As part of the original approval for Gateway Corporate Center, development standards and mitigation measures included a restaurant as proposed by this application. The development of the proposed restaurant on a vacant site could cause a traffic hazard due to the increase of vehicles to the area. Mitigation: Resurfacing of Golden Springs Road will be for the purpose of an addition of a right turn lane and bicycle lanes. At Grand Avenue, double left turn lanes for north and south bound traffic will be constructed and the synchronization of traffic signals are planned for the fiscal year of 1993-1994. AGENDA ITEM NUMBER: REPORT DATE: MEETING DATE: CASE/FILE REQUEST: PROPERTY LOCATION: APPLICANT: BACKGROUND/RECOMMENDATION: City of Diamond Bar PLANNING COMMISSION Staff Report tl September 30, 1991 October 14, 1991 Tentative Parcel Map 22102. A Minor land division to create two parcels on 4.39 acres in the CM-BE- UC zone. 1575 S. Valley Vista Dr. Diamond Bar, CA. 91765 Specialty Equipment Market Association. Staff has received notice from the applicant requesting a continuation of case TPM 22102, to November 25, 1991. Therefore, staff requests that the Planning Commission continue the public hearing regarding this case to the November 25, 1991. meeting. Prepared by: John Berry, Planning Intern t INTEROFFICE MEMORANDUM TO: Honorable Chairman and Planning Commissioners VIA: James DeStefano, Director of P1 9'f FROM: Irwin M. Kaplan, Interim City Plann r SUBJECT: Status of Gateway Corporate Center Development Agreement DATE: January 23, 1991 Representatives of Zelman Development Company have reviewed a draft of the provisions to be included in the Development Agree- ment, which was accepted in principle by the Planning Commission in September, 1990. As a result of a subsequent meeting with Diamond Bar City staff, it was agreed that two basic areas of concern required additional work before this project could move forward. They are: 1. The Procedure to be Used to Implement the Plan. Since Zelman Development Company felt that they could not commit those properties they no longer own to the City's planning requirements, a development agreement would not cov- er all the properties in Gateway Corporate Center. Accord- ingly, the City would have to impose regulations upon the entire Center, if all properties were to be included. Staff is now exploring alternative regulatory mechanisms to accomplish this, with the corollary objective of finding a mechanism which can be implemented quickly. Among the al- ternatives being explored, together with their timing impli- cations, are the Development Agreement, an Interim Zoning Ordinance and a Specific Plan. 2. Unresolved Substantive Issues A variety of issues were raised by Zelman in response to the draft of the draft provisions of the development agreement: Among the more significant are: a. Trip Budget and Monitoring Program Sid Mousavi, City Engineer, and Zelman representatives will meet to reconcile differences. b. A Pedestrian Travel Network In conjunction with Sid Mousavi, Byron Pinckert, Zel- man's architect, will prepare three alternative pedes- o-% t Memorandum to James DeStefano Page Two January 23, 1991 trian plans which are designed to connect proposed hotel and res- taurant sites with the central concentration of office uses. (Of- fice uses along Bridgegate and Valley Vista Drives will not be connected, since there appears to be no practical opportunity to create pedestrian connections which are shorter than the connec- tions along the existing roadway. The resulting designs will then be evaluated to deter- mine: i. Whether or not they are practical alternatives which will be used as intended, ii. If they can meet the state's requirements for han- dicap access, and iii. If the cost of installation and maintenance appear reasonable in the context of the total develop- ment. C. Right-of-way width for access street into Parcel #2. Although the Planning Commission accepted the idea of a reduction in right-of-way as requested by the applicant, neither Jim DeStefano or Sid Mousavi had evaluated the proposal. They will review the issue and report to the Commission. An important corollary issue - which needs to be ad- dressed if the wider right-of-way alternative is to be required, is the setback which will be required from the street. The objective would be to maintain an appropri- ate setback for aesthetic and functional purposes, while not penalizing the amount of development permitted on the site. d. Uses Subject to Conditional Use Permit (CUP) Staff will work with the applicant to distinguish be- tween uses which are clearly ancillary in nature and those which are primary generators of traffic and park- ing demand. The major concern was for health clubs which, by virtue of their size or location, could either be easily absorbed into the Center, or could pose a ma- jor traffic and parking problem. The objective would be to simplify the process, so that a CUP would not be needed for uses which are in support of the primary uses in the Center, so they would not need to go through a protracted CUP process. Is Memorandum to James DeStefano Page Three January 23, 1991 e. A variety of miscellaneous issues were raised which were not deemed to affect the substantive issues. These will be addressed by staff. As a result, it is doubtful that all issues can be addressed by staff and the developer prior to the Planning Commission meeting of February 11, 1991, as reported at our last Planning Commisison meeting. We would recommend, however, that this matter be reviewed on Feb- ruary 11th with staff to provide an additional update and status report at that time. JDS:IMK:pjs T. 2. The project presumably will conform to whatever sign regula- tions the city adopts. Representatives of Gateway Center Projects will be at the September 10 sign code hearing to share their concerns. 3. No pedestrian walkway system was recommended, due to grade differentials, distances between destinations, handicap ac- cess requirements and limited usefulness. The project archi- tect will be available to address the Commission on this is- sue. t 4. 1n addition, the applicant has suggested that it may be ap- propriate to allow the five story height limit to be exceeded for certain parcels, only if approved by the City. The affected parcels would be those currently permitted to go to nine (9) stories by CUP, with the exception of Parcel #2 which is the Parcel currently before the Commission for a twelve lot subdivision. These lots would be subject to a three story limit). The specific parcels would be 1/1a, 3, 4, 6, 7, 8, 9, 10. (See attached map). This provision to exceed the established height limit should be considered by the Commission only if it feels that the addedflexibility is in the City's interest. By maintaining this provision, the City is sanctioning the added height on a case-- by-case basis. As a practical matter, it means that at such time as an approval is granted to exceed the height limit, subsequent requests, and approvals are likely. Alter -- natively, if the added height provision were not included, then the message the City would convey is that the height limit is not to be exceeded. Any change would then require a plan amendment. OTHER CONSIDERATIONS: Although not addressed in the discussion with the applicant, it is recommended the parking requirements be reviewed and refined as may be needed, to reflect the changing mix.of uses which may occur in the Center. It - The City Engineer's original conditions have been incorporated into the proposed conditions of approval. He may wish to suggest modifications of these conditions at the September 10 meeting. The applicant has also submitted a revised setback program for the proposed parcels (attached). The applicant will explain the chan- ges to the Commission at the meeting, and the decision of the Com- mission should also be incorporated into the above recommenda- tions. Also attached are the suggested revisions, prepared by the developer' s architect, which reflect the above considerations. Enclosures CITY OF DIAMOND BAR MVltwyLalz;hlt 1 Ilu To: Planning Commission FROM: Irwin M. Kaplan, Interim City Planner SUBJECT: Gateway Corporate Center, TPM 22178 and TPM 22102 DATE: September 7, 1990 Since the Parcel Map applications requests for TPM 22178 and TPM 22102 for Gateway Corporate Center are departures from the design guidelines which were reviewed and endorsed by the City Council on October 17, 1989, the Planning Commission reviewed the changes which would be necessary to bring the Parcel Maps and guidelines into conformance, at the. same time as they considered the Parcel Map applications. At the August 27 meeting, the Planning Commission recommended ap- proval of the Parcel Map applications, subject to refinement and resolution of the following. recommendations: 1. Three story height limit 2. Floor area ratio (FAR) 0.5:1 3. Office and related commercial uses, not ,industrial 4. Signage 5. Pedestrian walkway 6. Trip allocation monitoring, to assure that the Center remains within existing trip budget 7. Review of each project by the City of Diamond Bar for confor- mance to revised regulations. subsequent to the August 27 meeting, staff met with the represen- tatives of Zelman Development Company. With relatively minor changes, the program recommended by the Commission seemed acceptable. The changes are as follows: 1. A five story height limit should apply to Parcels Number 1/1a, 3 and 23, along Golden Springs. The only vacant parcel is #23, which is. alongside the SCAQMD and the Days Hotel, both of which are equivalent to five stories, all of which overlook t_he freeway. (The suggested revision prepared by the developer's architect also includes a five 'story height limit for parcel 4. This is the parcel which was recently approved for Dr. Omar's restaurant, at two stories. Accordingly, a five story limit seems inappropriate.) Additional density would also be permitted for these sites, A FAR of .65:1 has been suggested by the architect. Since an actual density limit for these parcels (above the 0.5.1 FAR) had not been discussed at the meeting between staff and Zelman Company representatives, it should be discussed by the Commission. i- 3 c-) ; r 1 I ; ; Liz LL] Lc3 iS7 lt7 Lc] En lop N LC) LS7 Q O O O O LS] Ln Ln lI] Ln ' T '-- r r r-- r r r- r r r-- r L_ _ ca i ; :) 1 1 1 ; ; ; 1 1 ; N 4.1 1 1Nr- LU C7 N LL7 LC] Ln Ln Zr) L17 Ln Ln Lo Ln u? Lo N N .- ,- N N N N N N N Ci7 Ln Ln L o LD LD Liz I 1 1 1 m• ct N N N N cj• 0 0 0 0 0 0 0 0 0 0 0 0 O 0 0 0 0 0 0 0 0 Q 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 d cc O O O p O O O O Ca 0 0 O 0-- z:- C 4 4 4 4 4 a• 4't 'r tt C O N N u O rn r*) O Ln Ln m N to n W C7 C7 N C) lt7 CT] C 7 t` r D N cn ca OJ Q7 r- O C7 0 LC) O M CD e-- r tt C''7 r I-- N O y"' o cn000 oniLf] No V C N LO N O hf 0 0 0 0 0 0 0 Lo r f M ,•- O M M 0 0 cV 0 0 r• cl CLMdLnNC'LD _- Ln C C n O N m C'7 N ca r N Co r w r M T N r Uj L j O o o L d ro m ro ca m ro c0 (p ro ro ro m to m C) o Qa m O N co co N m co T m U L L- Ln Nh '[ 'ct co Ln M M CDci' U? ro O a7 O ro.n c» mw. a,r Y O r-Nc ta TOTAL (NET) SITE AREA: 413,820 S.F. 9.5 ACRES 45' BLDG. SET BACK 25' PKG. SET BACK 15' PKG/BLOG. SET BACK I VALLEY VISTA DRIVE BRIDGE GATE DRIVE LOT NUMBER 2 A L. GATEWAY CORPORATE CENTER DIAMOND BAR iq Fir SITE LOCATION MAP GATEWAY CORPORATE CENTER DIAMOND BAR EXHIBIT 11 SEP- 6-90 THU 17.13 HILL PINCKERT ARCH FAX NO, 17148630051 P,02 GATEWAY CORPORATE ; CENTER diamond Bar DESIGN GUIDELINES t6369 van Carman avenue. suiie ',05 krvine. Gaaiernia 9271 1714) Fj 3- i770 a Ammend paragraph 2.1.1 to read as falJaws: The following is a list of specific uses allowed within Gateway Corporate Center Diamond Bar witliout special process;zig,, Uses not speclfcaly listed svill reT; r,: sl.'ecial processing and approval by the City of Diamond Bar, as per section 2.1.2 Add the fbkvwing uses: Day Care Facilities Delete the fallowing uses: Feed/Grain sales Ice sales, excluding ice plants Dej>artrnent Stares Page Delete the following uses: Pet supplies store Pet Stores Trailer sales/box and wilily Retail .stores Assayfrlg Pao.e 9 Delete' the following uses; Gas inetering/corltral Stations Afimeographladdressograph seivices aundry PlatI(S 1 Delete the follai;zng uses: Re -Upholsterers, fiamiture 7- rLd iennists Veterinary clinics Page 11 Delete the followi-ng uses: Wedding Chapels SEP- 6-90 THIS 17 14 HILL P INCKERT ARCH FRS{ NO, 171486306511 P. 03 Pngc I2 Ammend Paragraph 2.1.2 to read as fall ows: The following is a list of uses within Gateway Corporate Center Diamond Bar which require special proceMsing and approval. Other uses riot si:ecitice ident;fied here or, in Sec- tion 2.1.1 may be scabrrzitted for consideration by the City of Dlwnond .Bar. Add the following uses: Automotive Sales rrid Senice Center Delete the following uses: Amphitheaters Archery Ranges Aztlumobile E,-ak2 repair shops Automobile radiator shops Bowling alleys Day nurseries, children Garries of skill Arcades,perwy or rnovie Automobile battery services Automobile muffler shops Automobile rental and leasing rFencies Billiard halls Dry -Clean ingplarits Hospirals, small anirrzals Page t Delete the following uses: A:totarc yclelmotorscooter trail bike sales Mtrseries, greenhouse Radto/7Vstatrons and towers Recreational vehicle sales Rifle, pistol, skeet or, dap ranges k I Skealing rinks, Ice/roller Mobilehome sales Miiziture golf courses Recreational vehicle rentals Residences, caretaker, for use by a caretaker or sztper:1107 and his irnrnediate fainily where colidnuous supervision is required Aluminum products Bone products Canvas prodixts 0001 products Appliance assembly, electrical, electronic and electromechanfe'll Cosmetics, excluding soap Pa_ 'm I Delete the following uses: Glass products and stained glass assembly,provided no individual cntcible shall exceed a cntcible of sixteen(I6) sf SEP- 6-90 THU 17:14 HILL PINCKEHT ARCH FAX NO, 17148630651 P,04 fewlery rrtantrfactum Afera Is, working a, id myting of rare, precious or set niprectous metals Ticker and bamboo products Stone products Toiletries, e_ycluding soap Perfume matufacarre felt products Fur products Golf ball manufacture Leather products, excluding machine b:'lting Paper products (enclosed) Phonograph records m a»ujacture Shell products TC:YtIle Products Yam products, ercheding dyeing of},arn Fa e 1 Delc to paragmph 2.1.3: For a complete last of con&tiorral ar2d prohibited uses refer to th.e Aprendiv,4- 2 USES, Page Ammend section 22 to include. paragraph 2.12A: No site except those froming Golden -phAgs Ut7ve (fors I, L4,3,4,13) shall have an F.A.R. of B.O.1l1A.standard leasable area to net buildable (and of ntoi•e than S. Lots 1, 14, ? 4, 23 shall be lim[red to .65 F.A.R. and B.0-,11,4. standard leasable area. D'nder no circaml,!attces .shall the ag ,egate F 4.R. of Gateway Corporate Center Diamond .Bar exceed-5 F-4.R. svitlior:t specirc action by the City Council of Diamond Bar. pa_ fie ZS Add to heigh[ Iimics plan: Revise to show Lot 2 and 5 to be limited to 3 sto?y Paee 19 Ammen.d paragraph 2.23 to read: Lots 1, 2A, 3, 4, 6, 7 $ 9, 10 inclusive: nine (9) stories or 150 feet, whichever is less. Lots 2, S, and 11-22 inclusive: three (3) stories or 45 feet, whichever is less, AmmGnd paragraph 2.2.4 to read: No building or structure in excoss of 5 stones or 75 feet will be permitted un- less specifically approved by the Plarmiiig Review Hoard and authorized by the Ciiv of Dicunond Bar, Page 21 Antnaend paragraph 2.2.6 to read: Building height is measured f-vona the losvest FF elevation of an occupied floor to the ni,&r roof surface of the bu4dbig. ATechantcal pent%lou.5ev roofs and.roof-manned equipment wall be kept vritbin a 45 degree envelope bx beiglze and distance from the edge of the roof. SEP- 6-90 THU 17:15 MILL PiNCKERT ARCM FAX N0, 17148630851 P. CE p_? k Inset site niagYa-m for Lot #2, Pac'L 87 Ammtnd paragraph A.1.3 Iv indicate the follou+iztc; Prior to submission of plans for review by the Cit). of Diamond Bar, submit prelirninz y plans to the following ctics for review and approval: Remove Peter.F. Schabanim, Supervisor wid address. Delete Diamond Bar.Af-11W pu, Advisory CommAtee and addrrss, Ammc7td niijuber 4 to read: 2. Transainevica Really Scwiees, h,c. Filled on behalf of Applicant by 7elman Development Co.) Liman KLoken Architectural Committee Member 1L50 S. Olive Street #?200 Los Angeles, CA 90015 Page 89 2 copies: Site Plan, Floor plan, Exterior EleVEack)TI8, Grading F1.3n, Roof plan, Landscape Plan and Color Board Delete Prohibited Uses S; ction A.2. M E M O R A N D U M i TO: Planning Commission r FROM: .v Irwin M. Kaplan, Interim Planning Director DATE: September 7, 1990 SUBJECT: Gateway Corporate Center The attached correspondence from the Los Angeles County of Public Works to the Department of Regional Planning (dated Iuly 21, 1988) was transmitted to us by the applicant's representative. The material, together with material previously submitted, will be used to develop the trip budget allocation and monitoring mechanism. Staff will work with the applicant and his traffic engineer to determine the existing trip utilization and a program to monitor future trip allocations. Ctt`\SY OF LO5 AWCEir 5le DEPARTMENT OF PUBLIC WORKS fI Wt" rREMONY AYXNut ALNAN519A. CAUTOXFOA M13-1331 TM**&«w.n (010) 4S&fi41 VWMA# A. TWMAX5014, lS6~ c7:m L st m cma Der bir.~ OW KAC49L, A" Dbw*w July 21, 1988 Mr, James E. Hartl Acting Planning Director Department of Regional Planning County of Los Angeles 320 West Temple Street Attention Mr. Frank Kuo Impact Analysis Section Clear Mr. Flartl: REVISED TRAFFIC STUDY PROJECT NUMBER 87558, CUP 87558 GATEWAY CORPORATE CE1 TER A O REU Alt CONXES"NDENC[ To: sox 140 A1.11A MMA. CA U FO R NIA 119 M-IWA Ire I*Kv nI•-M Id" n TO ram: T-2 8BO.27.14 As requested, we reviewed the revised traffic study sutmittad in response to our eonmen'ts dated March 7. 19B8 for the subject project located on the south side of Golden Springs Drive east of the 57 Freeway in Diamond Bar. The following information is provided for inclusion in your response to the Department of Regional Planning. We generally agree that the revised project, which includes the addition of a 184-roan hotel and one -acre of professional office use to the originally proposed 37 acres of tight industrial use. 35 acres of professional office use, and 2 acres of restaurants, would generate approximately 1.800 vehicle trips per day, resulting inn total of approximately 15,540 trips per day for the total Gateway Corporate Center. At the Intersection of Golden Springs Drive/Gateway Center Drive, we rscwmie nd dedication of additional right of way and installation of an exclusive eastbound right -turn lane to the satisfaction of this Department. At the intersection of Golden Springs Drive/Copley Drive, are recumend axttnsion of the existing teestbound left -turn pocket to provide a mini1r, M of 3,00 feet storage for "ak-hour traffic volumes. At this intersection, we disagree with restriping the south approach to provide a left -turn lane, an optional left-Iright•turn lane, and a Fight -turn lame iUteadvaf V, t-i r' Mr. Jams E. Hartl -2- July 21, 1988 the existing dual left -turn lanes and a right -turn lane. Turning dual rights across a pedestrian crosswalk create problems because Motorists intheoutsideturnlanecannoteasilyseepedestriansinthecrosswalk. Providing additional capacity for northbound right turns would not signi- ficantly improve overall intersection capacity inasmuch as the right turnscanbemadeconcurrentlywiththeGoldenSpringsDrivewestboundlefts. We recommend that the improvementsntdetailedostrping plans should tions bthe shouldbe dJ 7r t f prepared to the satisfaction of this Department. We disagree with the level of service analysis for the intersection Of Brea Canyon Road/Colima Road. For each scenario, the Intersection Capacity Utilization calculations do not correctly identify all the critical movements, We generally believe that the level of service would degrade to unacceptable level E and F during the M and PH peak hours upon occupancy of the Gateway Corporate Center. We generally agree that construction of a dual southbound left -turn lane and a free northbound right - turn lane could mitigate a portion of the cumulative traffic impacts. We generally agree with the proposed localized widening for installation of an additional through lane on the west approach; however, since Golden Springs Drive is classified as a Secondary highway with only two eastbound through lanes yeast of the subject intersection, we recommend localized widening of the eastbound exiting leg to provide adequate road- way for margins vehicles. At the intersection of Golden Springs Drive/Grand Avenue, we do not believe the proposed mitigation measures provided in the report could realistically be constructed. Based on a recent analysis by this Department, we believe feasible improvements to this intersection would involve localized widening to provide three through lanes in each direc- tion on Grand Avenue, two through lanes in each direction on Golden Springs each approach, Drive, andlbiketlanes onpps, an Golden SpringsvDriveht-turn lane on At the intersection of Goldin Springs Drive/Diamond Bar Boulevard, we generally agree that the cmulative traffic impacts could be mitigated by constructingdualleft -turn litres on both the north and south approaches fromGoldenSpringsDrivetoDiamondBarBoulevardandanexclusiveright - turn lane from westbound Diamond Bar Boulevard to northbound Golden Springs Drive. We rocwymnd that'the developer of the cost for localized widening to construct the above raconded mitigation measures at the intersections of Brea Canyon Road/Colima Road, Golden Springs Drive/Grand Avenue, and Golden Springs Drive/Diamond Bar Boulevard. to -IN Mr. James E. Hartl -3- r` July 21. 1988 The site plan for the proposed motel shows the driveway at OattWay Canter Drive to be located along the inside of a horizontal curve. We recwmend relocation of this Access point to provide 40 MPH sight distance. Additionally, we believe the one proposed driveway would provide poor circulation for the hotel's 200-stall parking tot. We suggest that a satond driveway be provided to improve circulation. We rec=r end the daveloper provide d*tailed signing and striping plans for Gateway Center Drive to the satisfaction of this Department. If you have any questions regarding these connents, please contact our Traffic Studies Unit at (816) 458-5905. Very truly yours, T. A. TIDEHANSON Director of Public Works A i. BURGE Deputy Director SES:cm AGENDA NO. CITY OF DIAMOND BAR PLANNING COMMISSION AGENDA REPORT DATE: December 6, 1990 MEETING DATE: December 10, 1990 TO: Honorable Chairman and Members of the Planning Commission FROM: James DeStefano, Director of Planni 3 SUBJECT: Request for a Development Agreement - Gateway Corporate Center BACKGROUND' This matter is a follow-up to the Tentative Tract Maps which the Commission ap- proved on September 10, 1990. A Draft Development Agreement has been prepared and is being circulated for re- view. A rough draft document which outlines development limits and review pro- cedures for all of Gateway Center is attached. RECOMMENDATION• Staff recommends that the Planning Commission open the public hearing to allow any comments and then continue the matter to January 14, 1991. Staff will pro- vide additional information at the meeting. pj s INTEROFFICE MEMORANDUM TO: James DeStefano, Director of Planning FROM: Irwin M. Kaplan, Interim City Planner SUBJECT: Gateway Corporate Center; outline of Conditions Defining Limits of Development DATE: December 10, 1990 The attached draft reflects the Planning commission's action which was intended to subject all development to the City's review pro- cedures and to define the limits of develo..pment-, both -in terms of the intensity of development as well as the vehicle trips such a'e- velopment would generate. The draft is currently being reviewed by zelman Development Company, the City's Traffic Engineer and the City Attorney. Once their comments have been received, a final document will be prepared for presentation to the Planning Commis- sion. Since the Final document has not Vet been prepared, it is suggest- ed that the matter be continued to the Planning Commission Meeting of January 14, 1991. The following provides additional information concerning the items contained in the attached draft. 1. Item #3 identifies the broad categories of uses which would be permitted in the Gateway Center. These categories may need further refinement for ease of administration. Item #3 also recognizes that certain uses are ancillary in nature to the basic uses permitted in the Center, (such as convenience shopping, health clubs, etc.), but that such uses could also be developJd as primary uses as well, which could change the character of use and traffic coming to the Center. Consequently, an arbitrary threshold is established for an- cillary uses which, if exceeded, could substantially reduce the amount of floor area available for other types of devel- opment. Accordingly, a conditional use permit (CUP) proce- dure would be required if a particular development were to exceed the threshold. 2. Item #4 establishes a floor area ratio (FAR) of .5:1 for all parcels, except at the Days Hotel site, the SCAQMD site, the site approved for a restaurant and the vacant site overlook- ing Golden Springs Road. These sites would be permitted to develop up to an FAR of .65:1, but as a practical matter, 1 Revised 12/10/90 only the Golden Springs site would be affected in the fore- seeable future. The cumulative development which would be permitted in Gateway would be at a FAR of .5:1 (except as noted in item 11), or a total of 1,715,833 ftz of floor area. 3. Item #5 establishes a three (3) story height limit, except for Parcels 1, 3, 4, and 23. Again, only Parcel 23 would be affected in the foreseeable future. Height" is defined in a manner which would allow rooftop architectural features and garage structures which are part of the building (as well as freestanding garage structures) to be exempt from the height requirement. 4. Item #6 maintains the requirement for continued good faith efforts to provide a pedestrian network which will link of- fice uses with supporting facilities within Gateway._ 5. Items #7 and #8 require the developer to install all trans- portation improvements within Gateway and to pay a pro rata share of all off -site transportation improvements needed be- cause of Gateway, in accordance with a letter (Attached) from the County Director of Public Works. The extent to which these activities have been completed and/or funded has not yet definitively been determined. 6. Item #9 establishes the factors to be used to determine the Trip Budget". These factors will be applied to existing as well as proposed development, with a maximum Trip Budget of 15,540 daily trips for the entire center. Medical office use is identified as a separate category, as such uses have much greater Trip Generation characteristics than general office use. Also, alternative factors are shown for hotels and restaurants. Staff will identify the pre- ferred alternative after further reviews. The table also establishes Trip Generation characteristics for the P.M. peak hour', which is a consideration when dealingwithitem #11, Traffic Demand Management. 7. Item #11 allows additional development for Transportation De- mand Management (TDM) Programs which have successfully demon- strated a reduction in vehicle trips and which are covenanted to run with the land. As proposed, this incentive is calcu- lated in terms of Peak Hour Trips (rather than average dailytrips) since the P. M. peak is the critical period for the road network. A figure of 410 P.M. peak hour trips was drawn from the report prepared by Linscott, Law and Greenspan for Gateway, as it was deemed to be a realistic TDM target. 2 Revised 12/10/90 It should be noted that the modest -sounding 410 additional P.M. peak hour tri s which would be authorized by this provi- sion translates into 297,100 additional s uare feet of office space, or 17.3% of the total floor area Dermitted in Gateway. 8. Items #10, 11, and 12 allow for transfer of trips among par- cels. This is necessary, since each parcel has a maximum number of trips allocated to it and certain uses (such as offices) would not require the maximum number of trips, while others (such as restaurants) could exceed the maximum number of trips allocated to a particular parcel. 9. Items #12 and #13 charges the Planning Department with the responsibility for the bookkeeping function needed to main- tain the Trip Budget. This function lends itself to a spread- sheet which can be set up on the computer. 10. Recognizing that circumstances may change, item #14 estab- lishes a procedure to re --visit the factors used to determine Trips every five years and gives the authority to the City to determine if changes should be made. 11. Finally, item #1.5 specifies that the City's parking re- quirements in effect at the time a building permit is issued, shall prevail. This is particularly important with respect to such uses as medical offices, since in- terest has been demonstrated for such facilities within the City and it is appripriate at this time that the parking requirements be re-evaluated to determine their adequacy. Also, elsewhere in the Development Agreement, there is a pro- vision which would require Gateway to abide by any Interim Ordinances in effect (including the Sign Code Ordinance and the restriction on CM Zones) as well as any permanent ordi- nances which may replace the Interim Ordinances. (ordinari- ly, a Development Agreement locks the development standards of the existing Ordinances in place.) ii 3 Revised 12/10/90 r Cam`4)V OF LOS 50 DEPARTMENT OF PUBLIC WORKS pi!>;rilt" rXEMOKY AYLNUt ALKAMNOtA, CAL1TORNIA II16}]131 TAWP&OW. (111) 4msm T*DMAS A. 7TDL34A1W>i0i+t.141M~ ft"XACAUL AmAmm DbwA* r July 21, 1988 Mr. James F. Hartl Acting Planning Director Department of Regional Planning County Of Los Angeles 320 West T:*tr;,le Strait Attention Mr. Frank Kuo I4Vact analysis Section Dear Kr. iiartl: REVISED TRAFFIC STUDY PROJECT NUMBER 87558, CUP 87553 ATEWAY CORPORATE CENTER f.o. xQx 1+6.4 ALXAm2RA, cLL1roxxa stm-iva od9i R 70 nx T•-2 850.27.14 As regwaz tad, we rtylzwtd the revised traffic study subnitted in response to cur ccmgm is dated March 7, 1988 for the subject project located on the south side of Golden Springs Drive east of the 57 Frceway in Dimond Bear. The following inforrztion is provided for inclusion in your rtsponsc to the Cepartment of Regional Planning, We generally agree that the ravi$ed project, which inc%ldas the addition of a 184•-rocsi hotel and one -acre of professional offica use to the originally P roposvd 37 acres of light industrial us}, 35 acre.$ of professional office cast, and 2 Acra5 of restaurants, would generate appraxirz}ly 1,80D v:hicle trips per day, resulting Inca total of arproximately 1S,540 trips per day for the total Gateway Corpora c Center. At the intersection cf Golden Springs Drive/Gat"ay Center Drive, we r*cem end dedication of additional right of gray and installation of an exclusive eastbound right -turn ]ant to the satisfaction of this Department. At the intersection of Golden Springs OrivtlCoplty Drive, wt racmm.,tmd Oxtlnsion of the W$tIng wastbound iti't-turn pocket to proviet a mjnjjt r, Of 380 feet storage for p-eak-hour traffic vol=es. At this intersection, wt disagree with rastriping the south approach to provi'de a left -turn lane, an Optional left -!right -turn lane, and a right -turn !ant i Utead=;f i s Mr. James E. Karts -2- July 21, 19B8 the existing dual left -turn lanes and a right -turn lane. Turning dual rights across a pedestrian crosswalk create probltms because motorists in the outside turn lane cannot easily see pedestrians in the crosswalk. Providing additional capacity for northbound right turns would not signi- ficantly iemprove overall intersection capacity inasmuch as the right turnscanbemadeconcurrentlywiththeGoldenSpringsDrivewastboundlefts. We recowiend that the improvw ants to the about tutu intersections be the r t of nd detailed striping plans should be prepared to the satiSfactian of this bepartmant. Wt disagree with the level of service analysis for the intersection of Brea Canyon Road/Colima Road. For each scenario, the Intersection Capacity Utilization calculations do not correctly identify all the critical mov m-ents. We generally believe that the level of service would degrade to unacceptable level B and F during the M and PX peak hours upon Occupancy of'the Gateway Corporate Center. We generally agree that construction of a dual southbound left -turn lane and a free northbound right --turn lane could mitigate a portion of the ct--nulttivt traffic Imacts. we generally agree with the proposed localized widening for installation of an .additional through lane on the west approach; however, since Golden Springs Drive is classified as a Secondary highway with only two eastbound through lanes east of the subjcc.t intersection, we recomend localized widening of the eastbound exiting leg to provide adequate road- way for merging vehicles. At the intersection of Golden Springs Drive/Grand Avenue, We do not believe the proposed mitigation measures provided in the retort could realistically be constructed. Based to a recent analysis by this Department, we believe feasible improvements to this intersection would involve localized widening to provide three through lanes in each direc- tion on Grand avenue, two through lanes in each dirtction on Golden Springs Drive, dual left -turn la -PP , an exclusive right-turnn lane on each approach, and bike lanes on d lLIen Springs Drive. At the intersection of Golden Springs Drive/Diamond tar Boulevard, we generally agree that the ctamulativa traffic inVact.s could be mitigated by constructing dual left -turn lanes on both the north and south approaches from Golden Springs Drive to Diamond Bar Boulevard and an txclustve right - turn lane frcm westbound Diamond Bar Boulevard to northbound Golden Springs Drive. We reccmend that'the developer qo0tributt* of the cost for localized widening to construct the above rtcwmendid mitigation Z ;> measures at the intersections of Brea Canyon Road/Cali= Road, Golden Springs Drivt/Grand AYtnut, and Golden Springs Drivt[Diawnd Bar. oi llvard, W Mr. James E. Hartl 3- July 21, 1988 The site plan for the proposed hotel Shows the driveway at Gateway Cantu Drive to be located along the inside of A horizontal curve. We reco=.end relocation of this Acctss point to provide 40 MPH sight distance. Additionally, era believe the ante proposed driveway would provide poor circulation for the hotel's ZOO -stall parking lot. We suggest that a second driveway be provided to improve circulation. We recomend the developer provide detailed signing and striping, plans for Gattway Center Drive to the satisfaction of this Department. If you have any questions regarding these ccaments, pleaze contact our Traffic Studies Unit at (818) 458-5909. Ytry truly yours, T. A. TIOEMANSON Director of Public Works ROGER /W.BURGER Deputy Director SES: cm f I D R A F T C O P Y Recorded At the Request Of And When Recorded Mail To: Lynda Burgess City Clerk City of Diamond Bar 21660 East Copley Drive, Suite 100 Diamond Bar, California 91765 DEVELOPMENT AGREEMENT NO. 2 (1990) CONCERNING PROPERTY LOCATED IN GATEWAY CORPORATE CENTER ALONG GATEWAY CENTER, COPLEY DRIVE, VAL- LEY VISTA AND BRIDGE GATE DRIVE, DIAMOND BAR, CALIFORNIA THIS AGREEMENT is made and entered into as of the "Effective Date" set forth herein by and between Diamond Bar Business Asso- ciates ("Developer") and the CITY OF DIAMOND BAR, a municipal cor- poration organized and existing under _the laws of the State of California ("City"). W I T N E S S E T H: A. Recitals. i) California Government Code Sections 65864, et seq. authorize cities to enter into binding development agreements with persons having legal or equitable interests in real property for the development of such property. ii) Developer owns all interest in and to that real property located entirely within City, the common and legal de- scription of which is set forth in Exhibit "A," attached hereto and incorporated herein by this.reference and hereinafter is re- ferred to as "the Site." iii) The Site is now zoned CM (Commercial Manufacturing) pursuant to the provisions of City's Zoning Ordinance and Zoning Map, as amended to date hereof. Developer and City desire to pro- vide through this Development Agreement more specific development controls on the Site which will provide for maximum efficient uti- lization of the Site in accordance with sound planning principles. 1 iv) On , 1990, City adopted its Ordinance No. (1990), thereby approving this Development Agreement with Developer and said Ordinance was effective on B. Agreement. NOW, THEREFORE, the parties hereto agree as follows: 1. Definitions. In this Agreement, unless the context otherwise requires, the following terms shall have the fol- lowing meaning: a. "City" is the City of Diamond Bar. 1 D R A F T D R A F T C O P Y b. "Developer" is the Diamond Bar Business Associates or any assignee thereof. C. "Development Program" are those specifications attached hereto, marked as Exhibit "B" and incor- porated herein by this reference, and comprised of the documents -including, but not limited to, de- velopment standards which specify the uses, densi- ty, intensity, height of buildings permitted, for all as more fully described in Attachment "E" pro- perties in Gateway Corporate Center currently un- der the ownership or control of the developer. The Development Plan attached hereto includes various conditions of approval set forth in Exhibit "C" hereto which includes tentative parcel map number as approved by the Planning commission on 1990, as well as provi- sions for the reservation of land for public pur- poses, standards for public improvements, together with other terms and conditions of development ap- plicable to the site are not changed, altered or modified by this Development Agreement unless spe- cifically set forth herein. The project also in- cludes the records of applications by Developer, the proceedings before the Planning Commission and City Council, and all such records and files in these matters are incorporated herein by this ref- erence as though set forth in full. d. "Project" is that development approved for the Site as provided in this Development Agreement comprised of a tentative parcel map for a twelve lot subdivision as reflected in the Development Program attached hereto as Exhibit "B" and the plan and conditions set forth in Exhibit '"C." e. "Effective Date" shall mean the 31st calendar day following adoption of the ordinance approving this Agreement by City's City Council. 1 2. Recitals. The recitals are part of the agreement between the parties and shall be enforced and enforceable as any oth- er provision of this Agreement. 3. Interest of Property owner. Developer warrants and re- presents that it has full legal title to the Site, that it has full legal right to enter into this Agreement and that the persons executing this Agreement on behalf of Developer have been duly authorized to do so. 4. Binding Effect of Agreement. Developer hereby subjects the Project and the land described in Exhibit "A" hereto to the covenants, reservations and restrictions as set forth in this Agreement. The City and the Developer hereby declare their specific intent that the covenants, reservations and restrictions as set forth herein shall be deemed covenants 2 D R A F T. D R A F T C O P Y running with the land and shall pass to and be binding upon Developer's successors and assigns in title or interest to the Project. Each and every contract, deed or other instru- ment hereinafter executed, covering or conveying the Project or any portion thereof shall conclusively be held to have been executed, delivered and accepted subject to the cove- nants, reservations and restrictions expressed in this Agree- ment, regardless of whether such covenants, reservations and restrictions are set forth in such contract, deed or other instrument. City and Developer hereby declare their understanding and intent that the burden of the covenants, reservations and restrictions set forth herein touch and concern the land in that the Developer's legal interest in the Project is ren- dered less valuable thereby. The City and Developer hereby further declare their understanding and intent that the bene- fit of such covenants touch and concern the land by enhancing and increasing the enjoyment and use of the Development by Developer and the future occupants of the Project, the in- tended beneficiaries of such covenants, reservations and re- strictions, and by furthering the public purposes for .which this Agreement is adopted. Further, the parties hereto agree that such covenants, reservations and restrictions benefit all other real property located in the City of Diamond Bar, provided, however, that only City shall be entitled to en- force the provisions hereof pursuant to paragraph 16, below. 5. Relationship of Parties. It is understood that the contractual relationship between City and Developer is such that Developer is an independent party and is not the agent of City for any purpose whatsoever and shall not be consid- ered to be the agent of City for any purpose whatsoever. 6. Term of Agreement. The term of the Agreement shall com- mence on the effective date and shall expire on December 31, 2016, so long as Developer remains in material compliance with this Agreement, as from time to time amended. 7. Construction. Developer shall complete construction work for the Project 'on the Site, and all phases thereof, including, but not limited to, landscaping and all off -site improvements, pursuant to a grading permit or permits issued by City within three (3) years following the effective date. Notwithstanding any other term or provision of,this Agree- ment,'Developer shall complete rough grading of the site, in accordance with approved grading plans, within eighteen (18) months of the effective date. Failure to construct the Project shall cause this Agreement to be void and of no further force and effect. 8. Assignment. Developer shall have the right to sell, lease, ground lease, mortgage, hypothecate, assign or trans- fer all or any legally subdivided portion of this site, to any person or entity at any time during the term of this De- 3 D R A F T p, D R A F T C O P Y include an assignment of all rights, duties and obligations created by this Development Agreement with respect to all or any portion of the Site. The assumption of any or all of the obligations of Developer under this Agreement pursuant to any such transfer shall relieve Developer, without any act or concurrence by the City, of its legal duty to perform those obligations except to the extent that Developer is in default with respect to any and all obligations at the time of the proposed transfer. 9. General Standards and Restrictions Pertaining to Devel- opment of the site. The following specific restrictions shall apply to the use of the Site pursuant to this Development Agreement: a. Developer shall have the right to develop the Site in accordance with the terms and conditions of this Agreement and City shall have the right to control deve- lopment of the Site in accordance with the provisions of this Agreement. b. The density and intensity of use, the uses allowed, the size of proposed buildings, provisions for the res- ervation or dedication of land for public purposes, the maximum height of proposed buildings and location of public improvements, together with other terms and con- ditions of development applicable to the Site, shall be as set forth in this Development Agreement and the at- tached Development Program. 10. Effect of City Regulations on Development of Project. a. Resolution 89-104, adopted by the Diamond Bar City Council. on October 17, 1989, is hereby superseded by adoption of Ordinance approving this development agreement. b. Except as expressly provided in this Development Agreement, all substantive and procedural requirements and provisions contained in City's ordinances, specific plans, rules and regulations, including, but not limited to, the Zoning Ordinance, any Interim Ordinance adopted pursuant to Section 65858 of the Government Code, (in- cluding, but not limited to, Ordinances regulating sign - age and development in CM zones) in effect as of the effective date of this Development Agreement, and any permanent ordinance which may subsequently be adopted which supersedes the provisions of said Interim Ordi- nance, shall apply to the construction and development of the Site. i. The provisions of this paragraph 10 shall not preclude the application to the development of the Site those changes in City ordinances, regulations, plans or specifications which are specifically mandated and re- quired by changes in state or federal laws or regula- 4 D R A F T D R A F T C O P Y tions as provided in California Government Code Section 65869.5 or any successor provision or provisions. ii. The payment of fees associated with the con- struction of the Project, including land use approvals, development fees, building permits, etc., shall be pur- suant to those fees in effect at the time application is made for such approvals or permits. iii. City may apply any and all new ordinances, rules, regulations, plans and specifications to the de- velopment of the Site after the effective date provided such new rules and regulations do not conflict with the terms of this Development Agreement as of the effective date. iv. Nothing herein shall prevent the application of health and safety regulations (i.e., fire, building, seismic, plumbing and electric codes) that become appli- cable to the City as a whole. 11. Permitted Uses. Those uses allowed on the Site shall be as follows: a. Permitted Uses. b. Uses Requiring Conditional Use Permit. 12. Annual Review. During the term of this Development Agreement, City shall annually review the extent of good faith compliance by Developer with the terms of this Develop- ment Agreement. Developer shall file an annual report with the City indicating information regarding compliance with the terms of this Development Agreement no later than March 15 of each calendar year. 13. Indemnification. Developer agrees to, and shall, hold City and its elected officials, officers, agents and employ- ees harmless from liability for damage or claims for damage for personal injuries, including death, and claims for prop- erty damage which may arise from the direct or indirect oper- ations of Developer or those of his contractor, subcontrac- tor, agent, employee or other person acting on his behalf which relate to the construction and operation of the Pro- ject. Developer agrees to, and shall, defend City and its elected officials, officers, agents and employees with re- spect to actions for damages caused or alleged to have been caused by reason of Developer's activities in connection with the Project. This hold harmless provision applies to all dam- ages and claims for damage suffered or alleged to have been suffered by reason of the operations referred to in this De- velopment Agreement regardless of whether or not the City prepared, supplied or approved the plans, specifications or other documents for the Project. 5 D R A F T D R A F T C O P Y 14. Amendments. This Agreement may be amended or can- celed, in whole or in part, only by mutual written consent of the parties and then in the manner provided for in California Government Code Sections 65868, et seq., or their successor provisions. 15. Minor Amendments to Development Plan. Upon the written application of Developer, minor modifications and changes to the Development Plan may be approved by the Director of Deve- lopment Services pursuant to the terms of City's Zoning Or- dinance. 16. Enforcement. In the event of a default under the pro- visions of this Agreement by Developer, City shall give writ- ten notice to Developer (or its successor) by registered or certified mail addressed at the address stated in this Agree- ment, and if such violation is not corrected to the reason- able satisfaction of City within sixty (60) days after such notice is given, or if not corrected within such reasonable time as may be required to cure the breach or default if said breach or default cannot be cured within sixty (60) days provided that acts to cure the breach or default must be commenced within said sixty (60) days and must thereafter be diligently pursued by Developer), then City may, without further notice, declare a default under this Agreement and, upon any such declaration of default, City may bring any action necessary to specifically enforce the obligations of Developer growing out of the operation of this Development Agreement, apply to any court, state or federal, for injunctive relief against any violation by Developer of any provision of this Agreement, or apply for such other relief as may be appropriate. 17. Event of Default. Developer is in default under this Agreement upon the happening of one or more of the following events or conditions: a. If a material warranty, representation or statement is made or furnished by Developer to City and is false or proved to have been false in any material respect when it was made; b. If a finding and determination is made by City following an annual review pursuant to paragraph 12 herein above, upon the basis of substantial evidence, that Developer has not complied in good faith with any material terms and conditions of this Agreement, after notice and opportunity to cure as described in paragraph 16 herein above; or C. A breach by Developer of any of the provisions or terms of this Agreement, after notice and opportunity to cure as provided in paragraph 16 herein above. 18. No Waiver of Remedies. City does not waive any claim of defect in performance by Developer if on periodic review 6 D R A F T D R A F T C O P Y City does not enforce this Agreement. Nonperformance by De- veloper shall not be excused because performance by Developer of the obligations herein contained would be unprofitable, difficult or expensive or because of a failure of any third party or entity, other than City. All other remedies at law or in equity which are not otherwise provided for in this Agreement are available to the parties to pursue in the event that there is a breach of this Development Agreement. No waiver by City of any breach or default under this Develop- ment Agreement shall be deemed to be a waiver of any other subsequent breach thereof or default hereunder. 19. Rights of Lenders Under this Agreement. Should Developer place or cause to be placed any encumbrance or lien on the Project, or any part thereof, the beneficiary ("Lender") of said encumbrance or lien shall have the right at any time during the term of this Agreement and the existence of said encumbrance or lien to: a. Do any act or thing required of Developer under this Agreement, and any such act or thing done or per- formed by Lender shall be as effective as if done by Developer; b. Realize on the security afforded by the encumbrance or lien by exercising foreclosure proceedings or power of sale or other remedy afforded in law or in equity or by the security document evidencing the encumbrance or lien (hereinafter referred to as "a trust deed"); C. Transfer, convey or assign the title of Developer to the Project to any purchaser at any foreclosure sale, whether the foreclosure sale be conducted pursuant to court order or pursuant to a power of sale contained in a trust deed; and d. Acquire and succeed to the interest of Developer by virtue of any foreclosure sale, whether the foreclosure sale be conducted pursuant to a court order or pursuant to a power of sae contained in a trust deed. 20. Notice to Lender. City shall give written notice, of any default or breach under this Agreement by Developer to Lender (if known by City) and afford Lender the opportunity after service of the notice to: a. Cure the breach or default within sixty (60) days after service of said notice, where the default can be cured by the payment of money; b. Cure the breach or default within sixty (60) days after service of said notice where the breach or default can be cured by something other than the payment of mon- ey and can be cured within that time; or C. Cure the breach or default in such reasonable time 7 D R A F T D R A F T C O P Y as may be required where something other than payment of money is required to cure the breach or default and can- not be performed within sixty (60) days after said no- tice, provided that acts to cure the breach or default are commenced within a sixty (60) day period after ser- vice of said notice of default on Lender by City and are thereafter diligently continued by Lender. 21. Action by Lender. Notwithstanding any other provision of this Agreement, a Lender may forestall any action by City for a breach or default under the terms of this Agreement by Developer by commencing proceedings to foreclose its encum- brance or lien on the Project. The proceedings so commenced may be for foreclosure of the encumbrance by order of court or for foreclosure of the encumbrance under a power of sale contained in the instrument creating the encumbrance or lien. The proceedings shall not, however, forestall any such action by the City for the default or breach by Developer unless: a. They are commenced within sixty (60) days after service on Developer of the notice described herein - above; b. They are, after having been commenced, diligently pursued in the manner required by law to completion; and C. Lender keeps and performs all of the terms, cove- nants and conditions of this Agreement requiring the payment or expenditure of money by Developer until the foreclosure proceedings are complete or are discharged by redemption, satisfaction or payment. 22. Notice. Any notice required to be given by the terms of this Agreement shall be provided by certified mail, return receipt requested, at the address of the respective parties as.specified below or at any other such address as may be later specified by the parties hereto: To Developer: Diamond Bar Business Associates Zelmdp Development Company 1661 Hanover Road, Suite 221 City of Industry, CA 91748 To City: City of Diamond Bar 21660 East Copley Drive, Suite 100 Diamond Bar, California 91765 Attention: City Manager 23. Attorneys' Fees. In any proceedings arising from the enforcement of this Development Agreement or because of an alleged breach or default hereunder, the prevailing party shall be entitled to recover its costs and -reasonable attor- neys' fees incurred during the proceeding as may be fixed within the discretion of the court. 8 D R A F T D R A F T C O P Y 24. Binding Effect. This Agreement shall biind, and the benefits and burdens hereof shall inure to, the respective parties hereto and their legal representatives, executors, administrators, successors and assigns, wherever the context requires or admits. 25. Applicable Law. This Agreement shall be construed in accordance with and governed by the laws of the State of Cal- ifornia. 26. Partial Invalidity. If any provisions of this Agreement shall be deemed to be invalid, illegal or unenforceable, the validity, legality or enforceability of the remaining provi- sions hereof shall not in any way be affected or impaired thereby. 27. Recordation. This Agreement shall, at the expense of Developer, be recorded in the Official Records of the County Recorder of the County of Los Angeles within ten (10) busi- ness days following the Effective Date. IN WITNESS WHEREOF, this Agreement has been executed by the parties and shall be effective on the effective date set forth herein above. Dated: ATTEST: Check This Out CITY OF DIAMOND BAR, a municipal corporation By Gary L. Werner, Mayor Lynda Burgess, City Clerk Check This Out 9 D R A F T D R A F T C O P Y STATE OF CALIFORNIA ss. COUNTY OF LOS ANGELES On , 1990, pursuant to California Civil Code Section 1191, before me, TOMMYE A. NICE, Deputy City Clerk of the City of Diamond Bar, personally appeared Gary L. Werner and Lynda Burgess, personally known to me to be the persons who executed this instrument as Mayor and City Clerk of the City of Diamond Bar, and acknowledged to me that the City of Diamond Bar executed it. IN WITNESS WHEREOF, I have set my hand and affixed the seal of said City, the day and year in this Certificate first --above written. Deputy City Clerk of the City of Diamond Bar STATE OF ) ss. COUNTY OF ) On undersigned, Notary Public in and for personally appeared me on the basis of satisfactory evidence executed this instrument on behalf of ASSOCIATES. 1990, before me, the said County and State, proved to to be the persons who DIAMOND BAR BUSINESS I+ Notary Public in and for said State 10 D R A F T D R A F T C O P Y EXHIBIT A EXHIBIT B EXHIBIT C EXHIBIT D EXHIBIT E NOTE: TITLES TO BE ADDED AS SOON AS AVAILABLE. 11 D R A F T D R A F T C 0 P Y EXHIBIT C STANDARD CONDITIONS 1. As this property is located within the area described by the Forester and Fire Warden as Fire Zone 4 and future construc- tion must comply with applicable Code requirements. 2. Water mains, fire hydrants, and fire flows as required by the county Forester and Fire Warden for all land shown on the map to be recorded shall be provided. 3. Fire Department and City approved street signs, and building address numbers prior tooccupancyshall be provided. 4. Fire Department access shall extend to within 150 feet dis- tance of any portion of structures to be built. 5. The private driveways shall be indicated on the final map as FIRE LANES" and shall be maintained in accordance with the Los angeles County Fire Code. 6. All required fire hydrants shall be installed, tested and ac- cepted prior to construction. Vehicular access must be pro- vided and maintained serviceable throughout construction. 7. If structure is to be 35 feet in height or 3 stories the driveway shall be 28 feet paved width. 8. The required fire flow for public fire hydrants at this loca- tion is 5000 gallons per minute at 20 psi for a duration of 5 hours, over and above maximum daily domestic demand. 9. The required on --site fire flow for private on -site hydrants is 2500 gallons per minute at 20 psi with any two hydrants flowing simultaneously. 10. Fire hydrant requirements are as follows: Install 3 private on -site fire hydrants and upgrade 1 public fire hydrant. I 11. All hydrants shall measure 6" X 411 X 2 1/2" brass or bronze, conforming to current AWWA standard C503 or approved equal. All hydrants shall be installed a minimum of 25 feet from a structure or protected by a (2) two hour fire wall. To be located as per map on file with this office. 12. Fire flow data for existing hydrant be provided. I'f fire flow can be met, upgrade not needed. All hydrants shall be installed in conformance with Title 20, L.A. County Govern- ment Code or appropriate City regulations. This shall in- clude minimum six-inch diameter mains. Arrangements to meet these requirements must be made with the water purveyor serv- ing the area. 12 D R A F T D R A F T C O P Y 13. Forty-six (46) feet right-of-way dedication is required to increase the street widths to thirty-six (36) feet curb to curb is required. In addition, a five (5) foot public utili- ty easement on each side of the street is required. Ste«( 5-f4 LT 5 t L d i ? 5.1 -4 )L "/ 13 D R A F T CITY OF DIAMOND BAR MEMORANDUM TO: Planning Commission FROM: Irwin M. Kaplan, Interim City Planner SUBJECT: Gateway Corporate Center, TPM 22178 and TPM 22102 DATE: September 7, 1990 Since the Parcel Map applications requests for TPM 22178 and TPM 22102 for Gateway Corporate Center are departures from the design guidelines which were reviewed and endorsed by the City Council on October 17, 1989, the Planning Commission reviewed the changes which would be necessary to bring the Parcel Maps and guidelinesintoconformance, at the same time as they considered the Parcel Map applications. At the August 27 meeting, the Planning Commission recommended ap- proval of the Parcel Map applications, subject to refinement and resolution of the following recommendations: 1. Three story height limit 2. Floor area ratio (FAR) 0.5:1 3. Office and related commercial uses, not industrial 4. Signage S. Pedestrian walkway 6. Trip allocation monitoring, to assure that the Center remains within existing trip budget 7. Review of each project by the City of Diamond Bar for confor- mance to revised regulations. Subsequent to the August 27 meeting, staff met with the represen- tatives of Zelman Development Company. With relatively minor changes, the program recommended by the Commission seemed acceptable. The changes areas follows: 1. A five story height limit should apply to Parcels Number 1/1a, 3 and 23, along Golden springs. The only vacant parcelis #23, which is alongside the SCAQMD and the Days Hotel, both of which are equivalent to five stories, all of which overlook the freeway. (The suggested revision prepared by the developer's architect also includes a five story height limit for parcel 4. This is the parcel which was recently approved for Dr. Omar's restaurant, at two stories. Accordingly, a five story limit seems inappropriate.) Additional density would also be permitted for these sites. A FAR of .65:1 has been suggested by the architect. Since an actual density limit for these parcels (above the 0.5:1 FAR) had not been discussed at the meeting between staff and Zelman Company representatives, it should be discussed by the Commission. 2. The project presumably will conform to whatever sign regula- tions the city adopts. Representatives of Gateway Center Projects will be at the September 10 sign code hearing to share their concerns. 3. No pedestrian walkway system was recommended, due to grade differentials, distances between destinations, handicap ac- cess requirements and limited usefulness. The project archi- tect will be available to address the Commission on this is- sue. 4. In addition, the applicant has suggested that it may be ap- propriate to allow the five story height limit to be exceeded for certain parcels, only if approved by the City. The affected parcels would be those currently permitted to go to nine (9) stories by CUP, with the exception of Parcel #2 which is the Parcel currently before the Commission for a twelve lot subdivision. These lots would be subject to a three story limit). The specific parcels would be 1/1a, 3, 4, 6, 71 8, 9, 10. (See attached map). This provisionto exceed the established height limit should be considered by the Commission only if it feels that the added flexibility is in the City_!s interest. By maintaining this provision, the City is sanctioning the added height on a case - by -case basis. As a practical matter, it means that at such time as an approval is granted to exceed the height limit, subsequent requests, and approvals are likely. Alter- natively, if the added height provision were not included, then the message the City would convey is that the height limit is not to be exceeded. Any change would then require a plan amendment. OTHER CONSIDERATIONS: Although not addressed in the discussion with the applicant, it is recommended the parking requirements be reviewed and refined as may be needed, to reflect the changing mix of uses which may occur in the Center. The City Engineer's originaIIi conditions have been incorporated into the proposed conditions of approval. He may wish to suggest modifications of these conditions at the September 10 meeting. The applicant has also submitted a revised setback program for the proposed parcels (attached). The applicant will explain the chan- ges to the Commission at the meeting, and the decision of the Com- mission should also be incorporated into the above recommenda- tions. Also attached are the suggested revisions, prepared by the developer' s architect, which reflect the above considerations. Enclosures x 0 .1 : u) Lo LB lk co i i i ' i Li) Lo L[) LC) LC) Lf) i 0) N Lo Lo 0 0 0 0 0 Lo zo LC] io L 7 i t n ClJ N p co CU VJ N Lo u7 io Ln Ln Ln LC) Ln Ln Lf) -Lo Ln N N r r r N N N N N N N CJ] Lo lCl Ln To Lf] LC} d7 4-N N N N ,I- O O O O o 00 O O O O O O 00 O O 0 0 0 O O O O O O O O O O O O O O O O O O O O O O N O O O O N O O O M 0 0 0 0 O O O r 0 0 0 0 O C 4 '¢ -4 Ct 'i <t 'r ct 4 .d. d d Ol C tD co N N LC7 O C73 ch CL) LO LC) W N O) r CO M C'7 N M Ll (') 'ci' C'7 r- r- Cb OR aPl I.P,42a2 02 N O n O O r i- n N— LO Cl) F O LO O 07 CO r e- qt C' J r r N O 0 O C.) O 0 0 0 1: C] CV M, .- N O et ' Y' '4*ct r Nt NtN M O C 0 0 O (D 0 0 CO N O N O O O O O L o o m rn Ls7 N C'Ct Ir + Lci W Cn r. 1 m m N 00 r n CO r- co r O) r N t- L D CO U U U U U U U U U U U U U mt9 c0 Ctl c4 [6 m c9 m c6 cG c9 cz d a)-' LO — LO 'mot It CD IT LOU'7 03 fJ3 o 0 0 o 0 0 C; 4 O N N N N N N N N N CV N N F— TOTAL (NET) SITE AREA: 4133820 S.F. 9.5 ACRES 45' BLDG. SET BACK 25' PKG. SET BACK VALLEY DR1YE 15' PKG/BLAG. SET BACK l 1 y 1.. 2 B %;Fz'1 BRIDGE GATE DRIVE LOT NUMBER 2 A L GATEWAY CORPORATE CENTER DIAMOND BAR r... SITE LOCATION MAP GATEWAY CORPORATE CENTER DIAMOND BAR EXHIBIT 11 ;- SEP- 6-90 THII 17:13 HII.I. PINCKERT ARCH FAX NO. 17148630651 P.02 GATEWAY CORPORATE i CEN .R Diamond Bar DESIGN GUIDELMS 5536s van iarman avenue. sviie 105 u•vine, cadrernia 3271- 7i4y 933-1770 a Aminezld paragraph 2.1.1 to read as follows: The following is a list of specific uses allowed witbin G3;en.ay Corporate Ccnter Diamond Bar Aitbout special processixtg, Me.s riot specifically lister! 1"gill req:dre .sr;ecial processing and approval by the City of Diarnond Bar, as per section 2.1.2. Add the follov ir,g uses: Day Care Facilities Delete the following uses: FeedIGrain Sales Ice sales, arcluding ice plants DepartrrnentStores paize Delete the following uses: Pet supplies store Pet Scores Trailer salesAor and ctt7lity Retail stores Assaying Pa.7e 9 Delctc: the following uses: Girs rrleterit:g/carltr'ol stations Aiir)teograpltlerddress(?g7-al)l& sen"ices 1.aunilry Plants Delete the fdiloNving uses: Re -Upholsterers, filmiture T2iidernnists Veterinary clinics PagC 11 Delete the following uses: TVedding Chapels SEP-- 6-90 THU 17:14 HILL P I NCKERT ARCH FM N0, 1714863065, P, 03 Fage 12 Ammend paragraph 2.1.2 to read as f6il6w5: The following is a list of uses Nithin Gateway Corporate Center Diamond Bar which require special processing and approval. Other uses not spec fcallV idewifad here or in Sec- tion 2.1.1 may be subrrnitted for consideration by the City of Diamond Bar. Add the following uses Automotive Sales and Service Center Delete the following uses: Amphitheaters Archerlj Ranges Automobile Brake repair shops Attomobile radiator shops Bowling alle),s Dray nurseries, Children Gaines of skill Arcades penny or movie Automobile battery services Automobile muffler shops Automobile rental and leasing agencies Billiard halls Dry -Cleaning plants Hospitals, small a dinals Page T Delete the folloti%ing uses: Motorcycle/motorscooter trail bike sales Nurseries, greenhouse Radio/7Vstation.7 and towers Recreational vehicle sales Rifle, pistol, skeet or, trap ranges p I Skating rinks, ice/roller Mobilehorne sales Mutiture golf courses Recreational vehicle rentals Residences, caretaker, for use by a caretaker or mperrisor and his inariediate farrd v there continuous supervision is required Aluminum products Pone products Canvas products Cloth products Appliance usserrrbl}; electrical, electronic and electrorntecljarrical Cosmetics, excluding soap Pa_ 'e 14 De;lae the following uses: Glass products and stained glass assembly provided no individual crucible shall exceed a cntcible of siateen(16) sf SEP-- 6-90 THU 17:14 HILL P I NCKERT ARCM FAX NO. 17148630651 P, 04 Tewlery manufacture Aferals, wonting and casting of rare. Precious orsem1preciou.s metals Wicker and bamboo products Stone products Toiletries, t:_Fclud1mgsoap Perfume manufacture Felt products Furproducts Golf ball manufacture Leatlterproducts, e-rchtdingmachinabelting Paperproducts ( enclosed) Phonoraph records Tnaltrafacafre. Shell products Textile Products Yant products, excluding dyeing of yarn Page 1 Delete paragraph 2.J 3: For a complete List of conduronal acid prohibited uses referto tneAp_:endLvA.2 USES. ae Ammand sectiQa 2.2 to include. paragraph 212A: Alo .cte except those fronting Golden Springs Drive (lo(s 1, 14, 3,4,23) shall have an F.-1.R. of B.O.M,4.standard leasable area to net buildable land of more than .S. Lots 1, L4, . 31 4, 23 shall be limitad to .65 F.4.R. and B.O.:11.A. standard leasable area. Under no circumstances s.•'tall the ggregare F.A.R. of Gateway Corporate Centdr Pi[Tmond .Faar exceed .5 FA.R. tivithout specitii: acrioit by file City Council of Diamond Bar, Page IS Add to height limirs plan: Revise to show Lot 2 and S to be limited to 3 stor_y Fagg 19 Ammend paragraph 22.3 to read: Lots 1, 2A, 3, 4, 6, 7, Y, 9, 10 inclusive: nine (9) Stories or 1it1 feet, whichever is less. Lots 2, . 5, and 11-22 inclusive: three (3) stories or 45 feet, whichever is less. Ammcnd paragraph 2.2.4 to read: No building or structwe in excess of 5 stories or 75 feet will be permitted up. - less specifically approved by the Planning Review Board and autborized by the Ci,v of Dietrlrond Barr. Paee 21 Animetid paragraph 2.2.6 to read: Building height is measured h-om the lowest F.F elevation of an occup,•'ed floor to the roijor roof surface of the building. A echartical Vmtliouse roofs and.roof-t-nonrte.d equipment will be kept within a 45 degree envelope .i». height and distance from., the edge of the roof. SEP- 6-90 THU 17:15 HILL PINCKERT ARCH FAX N0, 17148630651 P. 05 Pale37 1 Inset Site Diagram for Lot #2, NLe 87 Ammead paragraph A.1.3 to indicate the f0IIow1n 1,; Prior to submission of pans for rEviuw by the City, ofDian-iond Bar, submit preliminary plans to the following cnti•ties for review and approval: Remove Peter F. Sehabawn, Supervisor and address. Pane 8 Dcle•te Dfamond Bar Al- unicip[r: Advisory Cornrnittee aild address. Ammen.d uurnber 4 to read: 2. Transa-77rerica Realty Sen*e ; Inc. Filed on behalf of Applicant by 7elinan Development co) Liman KLWken Architectural Committee Member WO S. OUVF, Street #2200 L.os Angelcs, CA 90015 Plea: fig 2 copies: Site Plan, Floor Plan, Exterior Eleva[ions, Grading Pl-n, Roof Plan, Landscape Plan and Color Board Delete Prohibited USe,: S;:ction A.2. M E M d R A N D U M i TO: Planning Commission FROM: 0l) 0.Irwin M. Kaplan, interim Planning Director DATE: September 7, 1990 SUBTECT: Gateway Corporate Center The attached correspondence from the Los Angeles County of Public Works to the Department of Regional Planning (dated July 21, 1988) was transmitted to us by the applicant's representative. The material, together with material previously submitted, will be used to develop the trip budget allocation and monitoring mechanism. Staff will work with the applicant and his traffic engineer to determine the existing trip utilization and a program to monitor future trip allocations. r CltAOY OF LOS ANGEjf 50 DEPARTMENT OF PUBLIC WORKS I SOM fRICHONT AV[NUt ALRAMAkA, CAUT03 djA !lil 13}l Tdo#6~.!b1i14wil" c tcu X. aw& um DgW7 Dr.errr SW KACAUL AmAMN C* M v July 21, 1988 Mr, Junes E. Hartl Acting Planning Dirtetor Department of Regional Planning County of Los Angeles 320 nest Temple Street Attention Mr. Frank Duo IrVact Analysis Section Hear Fir. Hartl: REVISED TRAFFIC STUDY PROJECT NUMBER 87558, CUP 87558 GATEWAY CRPOkATE CE14TER A. DXM A" CO2l1IE%MNDV4C9 TO: r.a. kax 140 AUTAb=A.GAL FORNIA!t1 lua IN 11K11 F%&A3i SIR M A.E: T-2 850.27.14 r , As requested, we rt0 twed the revised traffic study suturittad in response to our comments dated March 7. 1988 for the subject project located on the south side of Golden Springs Drive east of the 57 Freeway in Diamond Bar, The following information is provided for inclusion in your response to the Department of Regional Funning. We generally agree that the revised project, which includes the addition of a I84-roan hotel and one -acre of professional office use to the originally proposed 37 acres of light industrial use, 35 acres of professional office use, and 2 acres of restaurants, would generate approximtely 1,800 v;hid e trips per day, resulting in.a total of approximately 15,540 trips per day for the total Gateway Corporate Center. At the intersection of Golden Springs Drive/Gateway Center Drive, we rocormend dedication of additional right of gray and installation of an exclusive eastbound right -turn lane to the satisfaction of this Department. At the intersection of Golden Springs Drive/Copley Drive, we reca end extension of the existing westbound left -turn pocket to providf a minitnum of 300 feet storage for peak -hour traffic crops. At this intersection, we disagree with restriping the south approach to provide a left -turn laneo are optional left -!right -turn lane, and a right -turn lane itead.-of Li l Mr. Jams E. Kartl -2- July 21, 1988 the existing dual left -turn lane# and a right -turn lane. Turning dual rights across a pedestrian crosswalk create problems because motorists intheoutsideturnlineCannoteasilyseepedestriansinthecrosswalk. Providing additional capacity for northbound right turns would not signi- ficantly improve overall intersection capacity inasmuch as the right turnscanbemadeconcurrentlywiththeGoldenSpringsDrivewestboundlefts. We recommend that the lmprnvetnentndtdetailedabovestr pingintersections shauldbbethe 7r t of prepared to the satisfaction of this Department. We disagree with the level of service analysis for the intersection of Brea Canyon Road/Colima Road. For each scenario, the Intersection capacity Utilization calculations do not correctly identify all the critical moverrAnts. we generally believe that the level of service would degrade to unacceptable level E and F during the AM and PM peak hours upon occupancy of the Gateway Corporate Center. we generally agree that construction of a dual sorthbound left -turn lane and a free northbound right -turn lane could mitigate a portion of the cumulative traffic impacts. We generally agree with the proposed localized widening for installation of an .additional through lane on the west approach; however, since Golden Springs Drive is classified as a Secondary highway with only two ocalizedowideninguof theJames eastbound exitingleg tointersection, adequatecronmd- nd loCway for margin; vehicles. At the intersection of Golden Springs Drive/Grand Avenue, we do not believe the proposed mitigation measures provided in the report could realistically be constructed. Based 'on a recent analysis by this Department, we believe feasible improvements to this intersection would involve localized widening to provide three through lanes in each direc- tion on Grand Avenue, two through lanes in each direction on Golden Springs each approach, andlbiketlanes onnps, an Golden SpringsvDriveht-turn lane on At the intersection of Golden Springs Drive/Diamond Bar Boulevard, we generally agree that the cumulative traffic impacts could be mitigated by constructing dual left -turn lanes on bath the north and south approaches from Golden SpringsDrivetoDiamondBarBoulevardandanexclusiveright - turn lane from westbound Diamond Bar Boulevard to northbound Golden Springs Drive. We . reComend that• the developer r of the cost for localized widening to construct the above recwmended mitigation 2 ] measures at the intersections of Brea Canyon Road/Colima Road, Golden Springs Drive/Grand Avenue, and Golden Springs Drivt/Diamnd Bar Boulevard, Mr, Junes E. Marti _3_ July 21, 1988 The site plan for the proposed hotel shows the driveway at Gateway Center Drive to be located along the inside of a horizontal curve. We recomrend relocation of this access point to provide 40 MPH sight distance. Additionally, wt believe the one proposed driveway mould provide poor Circulation for the hotel's 200-stall parking tat. We suggest that a second driveway be provided to improve circulation. We recommend the davaloper provide detailed signing and striping plans for Gateway Canter Drive to the satisfaction of this Department. If you have any questions regarding these comments, please contact our Traffic Studies Unit at 1816) 458-5909. Very truly yours, T. A. TIDEKANSON Director of Public Works 4 - ROGER &URGE14 Deputy Director SES:cm IM REISSUED FOR AUGUST 27, 1990 AGENDA NO. aa aas_aaasaa==as=amaaaaaaaaaaaa=aaaa„a aaaaaaa aaaaana a yaa:aaaaaw asu=aaaaa.saa PLANNING COMMISSION ADDENDUM TO AGENDA REPORT waaasaaaaawaaaaw avaaaaaaamaaaana aaaaw=w aaaaaaxaaaaawaaaaaaaasayaa=awwaaaaaaaa DATE: August 7, 1990 'MEETING DATE: August 13, 1990 TO: Honorable Chairman and Planning Commission - FROM: Irwin Kaplan, Planning Commission Secretary SUB IECT: Environmental Assessment and subdivision 90-0052 (Vesting parcel Map 22178) DESCRIPTION: An .application to subdivide a 13.35 acres parcel into 12 lots ranging from .50 to 1..76 acres in size, bounded by Copley Drive and Gateway Center Drive. At the July 23 meeting, the Commission deferred consideration of this project pending a review of the master plan for Gateway Corporate 'Center and its anticipated impacts, in order to determine if additional on -site or off -site mitigation measures are needed. To assist the Commission in its deliberations, representatives of Zelman Development Company, Hill Pinckert Architects, and Linscott, Law and Greenspan, Transportation and Traffic Engineers, and C.P. Lange, Engineers will make a presentation to the. Planning Commission and the Traffic and Transportation Committee on Monday, August 13 at 5:00 P.M. at the Walnut Valley Unified School District Board Room The attached letter was sent to the Zelman Development Company to help focus their presentation. Among the uses the Commission may wish to consider are: 1. The total amount of development which can occur in the center. 2. The types of uses permitted and the design guidelines and development standards which apply to the project. 3. The traffic characteristics; generated by the project. 1 4. Identification of known projects which are likely to contribute to the cumulative traffic impact in the affected area. 5. The cumulative impact of traffic on adjacent streets and freeway ramps resulting from anticipated projects in the area. 6. The types of mitigation measures, both on -site and off --site needed to minimize adverse traffic impacts. 7. Gateway's pro-rata share of the cost of mitigation. 8. The extent to which such costs have already been underwritten by Gateway Corporate Center. If the Commission concludes that the information available provides an adequate basis for the project to proceed, then it may wish to consider, action on the parcel map request. If more information is needed, then the Commission should request the necessary information and continue the hearing. If the Commission chooses to approve the request; then it may--acish:to-consider thk following: 1. Currently. parcel sizes in the Center vary from. approximately 2 to 4.5 acres.' Unless there is a specific dev.e.lopment•proposal,- the'Commission may not wish to approve parcels at less then 2 acres. This would mean that smaller parcels would be approved only if,an acceptable development. plan were presented for the parcel,. 2. The Commission may also wish -to consider a pedestrian pathway plan for - the center, since the mix of uses may invite pedestrian traffic if it connected such destinations as the hotel, proposed restaurant and offices in an efficient and attractive manner, so that one does not have to drive around the loop to get to a destination which can be reached by foot in the course of several hundred feet. A Resolution and Conditions of Approval would be prepared for a subsequent meeting.) Ivp591stf(p13a195Oi52.add 2 REISSUED FOR -AUGUST 27 1990 AGENDA NO. aaa=3aasaa-sssaa a aaaa aa=sa aa=amaasa==aaaaasa a.a aa3a:saarasa:sasaa aaaaacsass PLANNING COMMISSION AGENDA REPORT a3eaaas3aaaae=a=a ca=samaaoona=m=aa a=oa zs=caataaaaaaaamea=a=ova=aaaaa »aaa DATE: July 19, 1990 MEETING DATE: July 23. 1990 TO: Honorable Chairman and Planning Commission VIA: Dennis A. Tarango, Planning Commission Secretary FROM: Irwin Kaplan, Interim Planning Director BY: Rob Searcy, Assistant Director of Planning SUBJECT: Environmental Assessment and subdivision 90-0052 (Vesting parcel Map 22178): An application to subdivide a 13:35 acres parcel into 12 lots ranging from .50 to 1.76 'acres in size. APPLICANT: Zelman Development Company - PROJECT AND SITE DESCRIPTION A. Action requested: Issuance of a Negative Declaration and approval of a Parcel Map. B. Surrounding Land Use and Zoning. North - Days Hotel. Zoned for commercial manufacturing uses. South - Vacant. Zoned for commercial -manufacturing uses. East - South Coast Air Quality Management District. Zoned for commercial -manufacturing uses. West - Office park. Zoned for commercial -manufacturing uses. C. Community Plan Designation _ I Project Site; Commercial North: Commercial South: Open Space East: Commercial West: Commercial D. Site Characteristics: The 13.35 acre site is zoned for commercial - manufacturing uses, and is part of the Gateway 'Corporate Plaza. The site is vacant, and has been rough graded. The site contains a 26% landscaped slope from the south. east and west, comprising about 5 acres of the site. The remainder of the site is relatively level. Sewer and water -line structures have been installed on site. The site has direct access to Copley Drive from the south, Gateway Center Drive -from the north.and.Valley Vista Drive from the west. BACKGROUND Gateway Corporate Center was approved by the County of Los Angeles Board of Supervisors under a "Unilateral Contract" procedure in 1985. Under this procedure, the zone changed to Commercial - Manufacturing (CM) (which allows for unlimited height, a floor area ratio of 13 times the net buildable site area and a wide range of commercial and industrial uses) which were further restricted through CC & R's which were recorded with the zone change. The CC & R's incorporate design guidelines by reference. which establish height limits (from 9 stories) and narrow the -range of uses. There have been subsequent changes in the CC & R's and the design guidelines). Additionally built into the unilateral contract, is the provision that any revision of the CC&R's is to be approved by the governing authority, now the City Council of the City of Diamond Bar. The City Council assumed this role from. the Board of Supervisors upon incorporation and in October 1989, the City Council adopted Resolution No. 89-104 ratifying and reconfirming design guidelines for Gateway Center. The guidelines are more restrictive than the.Commercial - Manufacturing Zone standards, therefore these guidelines regulate development within the center. In addition, all development in the center must be in accordance with all applicable state and local laws such as CEQA, and local codes. The subdivision of this parcel is not accompanied by any development project. This procedure of subdividing without the ability to review future development strategies has in the past created concern bylstaff, Planning Commission, and the City Council. In the case of this application, the single parcel will become 12 independent sites which may or may not be developed in tandem with adjacent .lots so that it may be difficult to coordinate design, land use and site access. If the current development throughout Gateway can be viewed as an indication of the future development, the exterior architectural features may not be consistent. The controls currently in place require the Gateway Architectural Review Committee'to perform the review. of all development projects. For this -subdivision application, the design review committee approved the parcel map as submitted. Presumably, by virtue of resolution 89-104, development proposals would be reviewed by both the City and Gateway's design. review committee in accordance with the Gateway Corporate Center design guidelines. The guidelines also state that any building which exceeds 5 stories -or 75 feet in height is subject -to a Conditional Use Permit._ It would also _ appear that the design guidelines would provide the basis for project evaluations unless the City were to adopt more restrictive regulations. CONCLUSION AND RECOMMENDATION Although the design guidelines regulate development within the Gateway Corporate Center, circumstances have changed in the overall area since project impacts were originally evaluated in the December 1982 E.I.R. Aside from changes in project impacts which may occur within the site as a result of approval of the parcel map the cumulative impacts of changes in surrounding areas (e.g. types and intensity of development, traffic, changes in the circulation system) may also alter the anticipated environmental impacts. If the Commission feels that circumstances warrant updated information on the project as a whole, then it is suggested that a supplemental E.I.R. be prepared which would address these issue before action is taken on the parcel map. If a supplemental E.I.R. is to be prepared, it is also suggested that the Commission identify those issues it feels need to be addressed as part of the supplemental E.I.R. If the Commission determines that the information is adequate for a decision and wishes to approve the Parcel Map, then it should direct staff to prepare conditions to be presented at the next Commission meeting. VESTING PARCEL MAP 22178 TRACT NO. 39679 LOTS L _. • nave VICINITY MAP aa4. su eor a wrs _ u ni ua ,. n.ouw n cwrrr a ws . 21660 FAST COPL.EY DRIVE - SUITE 100I * DIAMOND Ls. ry BAR, CA 91765-4177 714-860-2489 • FAX 714-861-3117 August 2, 1990 Mr. Van Keener C.F. Lange Engineers 840 K West Ninth Street Upland, California 91786 Dear Mr. Keener, The following may be helpful as you prepare material for the in- formal discussion with the Planning Commission at 5:00 pm on Au- gust 13, 1990. Based upon the July 23, 1990, Planning Commissioncomments, the August 13 discussion should provide the CommissionwiththeinformationtheyneedtofullyunderstandtheGatewayCorporateCenterProjectasitmightdevelopundertheexistingCouncilresolution, as well as, the implications of such develop- ment to the City. This is particularly true since .the Center, asoriginallyconceivedandtheimpactsasevaluatedin1981, appeartobesubstantiallydifferentfro& the project as currently con- templated. Although there is no prescribed format for how this might be ac- complished, you may wish to address Ae following issues which areofconcern: 1. Describe the types of uses and quantity of.develcpment whichcouldoccurifGatewayCorporateCenterwerebuilttoitsultimatecapacity. 2. How is the current I 1an for the Center different - from theProjectwhichwasdescribedandevaluatedinthefinalEIRwhichwascertifiedin1981? 3. How will the project Amnacts differ from those contemplatedinthefinalEIR? 4. Taking into consideration some ofthe major changes which maynothavebeenanticipatedintheoriginalEIR (e.g. openingOfGrandAvenue, proposed Chino Hills Development, proposedSantaFeIndustrialPark, etc. . . what will the overalli.e. cumulative) impact be on those Diamond Bar streets andFreewayrampsinthearealikelytobeaffectedbyGatewayCorporateCenterDevelopment, GARY H. WERNER JOHN A. FOBBING PHYLLIS E. PAPEN PAUL,V. HORCHHR • W C. HIM ROBERT L. VAN NORTMayorMayorPm'rcm Councilmember CounciImcmbcr Councilmember City Manager CITY OF DIAMOND BAR USES RECYCLED PAPER , JJ Mr. Van Keener August 2, 1990 Page Two 5. There were comments made at the July 23 meeting to the effect that the anticipated development would be substantially lessintensethanispermittedundertheCC&R's. Since the City'sResolutionaddressesonlytheCC&R's, the assumption is that the development rights for the Center extend to the limits oftheCC&R's. Accordingly, the evaluation of nro'ect impactsshouldassumethefullLjitensityofdevelopmentpermittedundertheCC&R's. If this is not to be the case, alternate development assumptions should be clearly identified. I would like to reiterate that Gateway Corporate Center is ex- tresnely important to 'the future of Diamond .Bar, not only in ternsofitscontributiontotheeconomicwell-being- of the Community, but for its contribution to the Quality of Community design and the image the City will project. Equally important, however, is the Citv's abilitV to anticipateandaccommodatethe. impacts of development.of this magnitude, par- ticularly at this crucial point in Diamond Bar' s history, as the City tries to gain control over its destiny. Thank you again for offering to provide the Planning Ccrosmissiontheinformationtheyneedtomakereasonedandresponsibledeci- sions, particularly since this is a project of suc<l Magnitude andimp- orr.ance. r?t q. .your regues`, I have se3 : 00 pm aside on Aucus. 9 toreviewyourpresentation. Please call if you have any Uuestions. q. Si =cerely, Kaplan terim City Planner pis cc_ Ben Reiling 21660 EAST COPLEY DRIVE . SUITE 100 DIAMOND BAR, CA 91765-4177 714-860-2489 • FAX 714-861-3117 MEMORANDUM DATE: July 18, 1990 TO: Irwin Kaplan, Acting Planning Director FROM: Jack Istik, Deputy City Engineer SUBJECT: TENTATIVE PARCEL MAP NO. 22178 - GATEWAY CORPORATE CENTER The Traffic and Transportation Committee at their meeting of 7-12- 90 reviewed the subject project. The Committee and staff recommend the following conditions be included if the Planning Commission approves the proposed subdivision: 1. To provide a traffic report prepared by a registered traffic engineer which examines the new impacts relative to the original densities and projected capacities to demonstrate that the new subdivision is in conformance with the potential impacts of the entire development. 2. To increase the street widths to 36 feet curb to curb whichwouldthenmeana46feetrightofwaydedicationisrequired. In addition, a 5 foot public utility easement on each side of the street is required. 3. The street which intersects Gateway Center Drive poses a probelem with the sight distance and curvalinear orientation. Staff s recommendation is to cul-de-sac the street and provideanemergencyaccessroadof20feetinwidthforthefireandsheriff's departments with restricted access to the public by means of some barricade moveable by emergency agencies. 4. A pedestrian plan may be required to provide for pedestrian access to the south. Also, a meandering sidewalk should be considered to create an enhanced parkway along the proposed streets. 5. A bus turn out facility is also required. GARY H. WERNER JOHN A. FORBING PHYLLIS E. PAPEN PAUL V. HORCHER SAY C. KIM ROSEKr L. VAN NOKT Mayor Mayor Pro Tern Councilmember Councilmernber Councilmember City Manager CITY OF DIAMOND BAR USES RECYCLED PAPER RESOLUTION NO. 89- 104 A RESOLUTION OF THE CITY COUNCIL -OF THE CITY OF DIAMOND BAR RATIFYING AND RECONFIRMING THE DESIGN GUIDELINES APPLICABLE TO THE GATEWAY CORPORATE CENTER. A. Recitals. i) On December 16, 1981, ARCIERO & SONS, INC., a California Corporation ("Arciero" hereinafter) and the DIAMOND BAR DEVELOPMENT CORPORATION; a California Corporation Development Corporation" hereinafter), entered into that certain Agreement of Protective Covenants, Conditions and Restrictions Agreement" hereinafter) pertaining to that certain real property in the City of Diamond Bar commonly referred to as the Gateway Corporate Center - Diamond Bar ("Gateway" hereinafter) and legally described as Lots 1 through 24, inclusive, of Tract Map No. 39679, as recorded in Book 1083, pages 14 through 21, inclusive, of Tract Maps in the Office of the County Recorder of Los Angeles County. ii) On June 21, 1985, Development Corporation and Arciero executed that certain First Amendment to the agreement, I thereby modifying the provisions of the agreement pertaining to an architectural committee. iii) On or about June 28, 1985, the Los Angeles County Board of Supervisors adopted and approved a Unilateral 1 Contract Imposing Land Use Restrictions pertaining to the Gateway property and caused to be recorded said Unilateral Contract and Development Standards and Landscape Criteria appended thereto concerning Gateway in furtherance of Los Angeles County Zoning Ordinance No. 85-00992 Adopted June 6, 1985. iv) On April 9, 1987, TRANSAMERICA DEVELOPMENT COMPANY, successor in interest to Development Corporation Transamerica" hereinafter) and DIAMOND BAR BUSINESS ASSOCIATES successor to Arciero ("Business Associates" hereinafter) executed a Second Amendment to the Agreement thereby amending certain parking standards contained in the Agreement. Transamerica and Business Associates, on May 16, 1988, amended the Agreement pertaining to certain specified permitted uses within Gateway. v) On April 131F 1987, Business Associates recorded a Master Declaration of Covenants, Conditions and Restrictions Master Declaration" hereinafter) pertaining to Gateway, thereby supplementing and amending the Agreement. Said Master Declaration specifically adopted and approved, in Section 5.3(a) thereof, certain architectural design criteria and specifications for Gateway described as liGateway Corporate Center - Diamond Bar Design Guidelines" prepared by Hill Pinkert Architects, Inc., and dated October, 1986 ("Design Guidelines" hereinafter). Said Master Declaration was approved and recorded in accordance with the procedures and requirements of the Agreement. Recordation of the Master Declaration thereby substituted the Design Guidelines referred to therein .for the Development Standards and Landscape 2 Criteria identified in paragraph A (iii), above. vi) Pursuant to Section 5.3 of the Master Declarations, the Design Guidelines were amended in July, 1988. vii) It is the purpose of this Resolution to reconfirm and ratify the Design Guidelines, as heretofore amended, in order to insure that the same are utilized and implemented with respect to property developed in Gateway. viii) All legal prerequisites to the adoption of this Resolution have occurred. B. Resolution. NOW, THEREFORE, the City Council of the City of Diamond Bar does hereby find, determine and resolve as follows: 1. In all respects in set forth in the Recitals, Part A, of this Resolution. 2. The City Council hereby ratifies and reaffirms the Design Guidelines for Gateway Corporate Center, Diamond Bar, dated October, 1986, and amended July, 1988. The City Council hereby specifically finds and determines that the Design Guidelines, dated October, 1986 and amended July, 1988, are the Design Guidelines for the'Gateway Corporate Center and were duly and validly approved pursuant to the provisions of the Master Declaration of Covenants, Conditions and Restrictions and the Agreement. 3. The City Council hereby specifically finds and determines that the Design Guidelines, including, but not limited to, parking requirements and design criteria contained therein 3 shall be, and the same hereby are declared to be, applicable to all projects in Gateway and City staff, consultants and developers of projects within Gateway hereby are directed to implement the same. 4. The City Clerk shall keep and maintain a full, true and correct copy of the Design Guidelines available for public use. 5. Business Associates shall provide to the City of Diamond any proposed amendments, modifications or changes to the Design Guidelines and/or the Master Declaration. 6. The City Clerk shall certify to the adoption of this Resolution. PASSED, ADOPTED AND APPROVED this 17th day of October 1 1989. 4 A4 Ma / C Mayor I, LYNDA BURGESS, City Clerk of the City of Diamond Bar, do hereby certify that the foregoing Resolution was passed, adopted and approved at a regular meeting of the City Council of the City of Diamond Bar held on the 17th day of October 1989, by the following vote: AYES: COUNCIL MEMBERS: Sorbing, Miller, Werner Mayor Pro Tem Horcher and NOES: COUNCIL MEMBERS: None Mayor Papen ABSENT: COUNCIL MEMBERS: None ABSTAINED: COUNCIL MEMBERS: None ATTEST: ` • '/r% 1 :: .::' y :, t 7 , City Clerk of th City of Diamond Bar 1 Nk1012\RGATEWAY\DB 6.11A 5 1=ROM:6x25 7539rnirezz9G DE TO: 7149906230 ,,OCT 16, 1909 12:17PM --P-02 I0MINO CASE N0. Sa-tTSg•(1) DAWMtNCE Na. 35-0029 r An 0,41rahl't amcrroirlq Section N2 0f Ordnance No, 1424. Changing fo latlans far tha execU- Von of the Cameral i l;yt, faill to the San Jose Zoned District No, 21. ' it Board of Supervlsas t1 the County of Las Angeles do ordaiA is follgw3; Section 1. Scchon 332 of Ordinance No. 1494, entitled "The Zoning 0r010ance, lidopted eptambtl 12. 1927,11 amended by amending the MOp of the San Jose Zoned District as shown anliltmapattachedhereto. CH411l OF I)PECISE FLAN' S A N J O S S DISTRICT' 2! 0 Ttir Y OPOINANCE 8-Qll AMENDING 6EC1ION 032 ODDINANCC I 4944 ZONING CASE 80059 r r' l, ' Wig LAI fa Io5 n air 0 541• U/C UNILATERAL CONTRACT 54 ,9:5 •' St T. ki;11 6f tit Or YSw r. 11 L•it'3PV F' 14019a' r • +414' 14. 1 5c.,0"33" w _ +Te t+' tj r) pla•;11^;'w a7. )(:' 51',+'} T" w 2r'i.aT 1?' w. 15a..1. S eS' +.Y +e, H. ff' 1 '3'.T,: T."n, 7C i'6 4 St'p'3'c'r. r 5. 53, YW-u 5. al rye' f'.7 s +9"++ rt' 8 t9a v+. 57T SI "a.S ••1 rrG' iS S. In'02'un'i Mr, ea' . Qy1t70'Ir S4"w ta.7,7' t'Er y_W 7,i'13•-w 1cr1 MC . nj :-:r]'29•. T"w lN. r.:.' ¢rf4 : 3•.r'r!'w .+l IT• 41 " a v0.7e' • +fir' 5. ;2' / S' 2+" •. 13. ne ' a' e:•'ar i7-re_ 'TGi' S 4 i1c31}. , h'r +o;. - ( Y? II'ar'x;1"L' /a76 A"r4't wbs. ar•si•1T" x H916 C, ^ 1' 3n• °.L' a 40Lr1i' Ve a _^G'iS' 1r) i .]'W' 1L' +. if1:t{' Cti• x ca' 4S'3 a• rrx 03' Iaa4.Y/y1'19'W )Gq.+•a' Lei k.n'7YY."e +1+1)' EL7. R*14T'OF WA f1F Tnf M.N,F. (rrl-r wAY ISU II' Rou'F pY) THE REGIONAL PLANNING COMMISSION COUNTYOrLOS 'STANLEY R.*GOU'LD CHAIRMAN NOWAN MURDOCH PLANNING DIRECTOR Section 2, The Board of Supeadms ; finds that this ordinance is COndstant with the Genital Plan of the Gaunty of Las Angeles. Section 3. This ordinance ahafl Ix published In METROPOLITAN NEWS, a lle'aspapef Pdnled and published In the County of Lu; Angeles. SEAL EDMUND 0, EDELMAN. Chalrman. ATTEST: LARRY J. MONTIll Executive Officor-Clerk 01 the BOird of Supelvlsofs of the County of Los Ardelas. 1 . I hirelly "filly dial it Its meaftnq of June 5, 1905, the foregpipg ordinance was adopted by the Board of Supervisors 01 said Gounly of Los Angeles by ilia following voLa, 19 wll: Ayes: $ upefyisare Pttof F, Schabarum, Kenneth Hahn, plane Dana end Mlchief 0, Amonovlrn, 1 Noes: None SEAL f TARRY J. MONTEILH. Execullye of9tcf-Cbt of the Board of BuDecMofi of the County of Los Angeles Elfgcllya date, July 7, 1955, Cso3, a3 60 Ju417 Project No,: TR PM Lead Sec.: - 22178 CAT Ex,: Los Angeles County Department of Regional Planning ZONING AND SUBDIVISION APPLICATION As required by Chapters 22.16 22.56 & 21.40 of the Los Angeles County Code IV) The following information is necessary for the review of ALL applications, Failure to furnish information will delay action. Attach extra sheets if necessary, Please read instructions carefully, RECORD OWNERS) APPLICANT APPLfCANT'S AGENT fEngineer, Licensed5tirveyor, Other and please indicate if engineer is also an ager t1 Name Diamond Bar Business Assoc -Name Z21man Dpvelopment Co. Name C P LanKe_Engineers 515 South Figueroa St .15 S tUU Figueroa St. Address Suite 1900 Address teo1 Address 840-K West 9th St. City - Los Angeles, CA _ city Los Angeles, Ca City Upland. CA Zip 90071 Phone (213) 628 -1208 Zip 90071 Phone (213) 628-1208 Zip 91786 Phone (7141 946-9919 Attach separate sheet if necessary, Including names, addresses, and signatures of members of partnerships, joint ventures, and directors of corporations.) CONSENT: I consent to the submission of the application accompanying this request. Signed See Attachtrtent Date AM record owners) CERTIFICATION: I hereby certify under penalty of perjury that the information herein provided is correct to the best of my knowledge, Signed / -- Date Applicant or Applicant's Agent) 1 Location - 21600 E. Gateway Center Drive Street address or distance front nearest cross street) between Gateway Center Drive and Copley Drive Street) (Street] in Zone CA113E -- UC Land Use, not postal zone) IINM/FS 111337. CSI TBG 971E-2 Planning Area Southeast Contract City General Plan Category Industrial Zoned District Brea Canyon Assessor 8293--050-002 USGS CT 4033-14 San Dimas Supervisorial District 1 Local Plan Category (if applicable) Industial Local Plan Diamond Bar Project Size (gross acres) 13.35 Acres Project Density 1.11 Acres/Lot Previous Cases Tr No. 39679 Present Use of Site Vacant Use applied for create a 12 lot commercial development Assembly and Dining Uses: Oecupant load for buildings per Building & Safety) Non Residential Parking: Type Required Provided Total Required: Total hovided: Additio+»I Information: The following must be completed for HOUSING PERMITS: Units allowed without hoasus: Units Density Bonus Required: % Units Total Units including bunus: Units SUBDIVISION REOUEST TOTAL GROSS ACRES 13.35 TENTATIVE MAP NUMBER 22178 LOTS: Existing 1 Proposed 12 STAGE: T X RV AM — RN RA _ FN WR MAP: T X RR(FD) RR(LD) RV— AO LL VESTING: (Y) X (N) LOT TYPE;OWN'SI-fIP (Circle);NO. LOTS;NO. UNITS;AC LOT TYPE OWN'SHIP (Circle) NO. LOTS NO. UNITS ACRES SF Mll 1 NC CC L DUP I NC CC L MF I NC CC L OS I NC CC L R PF I NC CC L C I NC CC L NC CC L 12 13.35 LEGAL DESCRIPTION {Ail ownership corn Prising the proposed lots/project) If petitioning for zone change, attach 1r.sl,rI rlcsr.ripIion of exterioi boundaries of area subject to the change, Lot 2 of Tram Nn 39679 per map hook 1083_1),glZes 14-21_ APPROPRIATE UORDENS OF PROOF MUST ACCOMPANY EACH TYPE OF REQUEST — Check each request applied for and complete appropriate sections, PLAN AMENDMENT REQUEST Countywideilocal Plan.or Area Plan Land Use Map Change: From To Acres From i-o Acres Other Cotuntytwide (Gen. DCV„ Flousirrg & Spec. Mgmi l Map Change: Front To Acres From To Acres Identify Text Change(s) to Countywide/Local or Area Plan Desired: Total Project Units Currently Allowed BY: (a) CW Plan Total Project Units Permitted If: (a) CW Plan Amended _ Total Acres Involved: (a) SERVICES: Existing and Proposed: Gas & Electric Education Fire _. Access Sheriff ZONE CHANGE BEQUEST Zone: From Acres To i h) Local Plan ib) Loral Plan Amended M Acres CONDITIONAL USE PERMIT, VARIANCE, NONCONFORMING REVIEW, AND OTHER.PERMITs Pei mit Type Ord. No. Project Site: Area devoted to: structures open space Gross Area No. of Lots Residential Project Gross Area Number and types of Units Residential Parking: Type Required and Proposed density No. of floors Units/Acres Provided Total Required Total Provided continued on next page) Sch. Dist(s) UN IIS LS SCM Date Cities: LA—BII_LC—PM^Other Counties: LA_.-.VT_SB_OR— K—Other Agencies/Companies: MWP_DWP—CWP_SCE—SCG_PT—GT_ATS_...SPT_UPR—MSHC—SCRC ANG—PNF_._.Other CAL TRANS: Y—N—Name(s): PCH—TCR—DCR_.._Other Routes;: HIGHWAYS MISC.: PROJECT NO.: CASES: PLAN AMENDMENT I-IOUSING PERMIT OTHER FILED ZONE CHANGE PARKING PERMIT PARCEL MAP FEE No. Brown Line CUP OAK TREE No. Blue Line RECEIPT NO. VARIANCE TRACT No. Brown Line NON CONFORMING REVIEW No. Blue Line ZELMAN DEVELOPMENT CO. A C A L I F 0 R N I A L IMI TED PARTNERSHIP SIS SOUTH FIGUEROA STREET • LOS ANGELES, GALIFOHNIA 90071 • TELECOPIER (2131 628-1208 • TELEPHONE 12131 628-0624 Diamond Bar Business Associates, a California General Partnership By: Diamond Bar Partners, a California General Partnership, Partner By: Zelman Development Co., a California Ltd. Partnership, Partner By: Zelman Management Co., a California corporation, General Partner By: Ben Rey ing, President Project Applicant (Owner): INITIAL. STUDY QUESTIONNAIRE A. GENERAL Tl;PORMKTION project Representative:--_ C P Lange Engineers -- 1 Diamond Bar Business Associates Name ts'uer IJDeJ PROTECT NM SER I s ) Q—Dx 2 515 South Fi ueroa Street ui 900 0-KW. res; ress Los Angeles CA. 90071 U land. CA 91786 714) 946-9919 s 213) 628--0624 Phone Nurrtie: Phone Number 1. Abtien requested and project description: A 12 parcel/parcel map 2. Street location of project: 21600 Gateway Center Drive 3a. Present use of site: Vacant 3b. Previous use of site or structures: Vacant 4. please list all previous cases Tract No. 39679 if any) related to this project: 5. Other related permit/approvals required. Specify type and granting agency. 6. Are you planning future phases of this project-> %Y% ff if yes explain: 7. Project area• 1 8. Number of floors: Covered by. structures, paving: 1.2Acres street paving) 9. Present zoning: CMBE - UC Landscaping, open space: 5.225^Acres landscaped slopes & parkway) 13.35 AcresTotalarea: ^ Dwestic public lo. water and sewer service: Water Sewers Does service exist at site? 27 %97 N %77 AV /N7 If yes, do purveyors have capacity to meet demand %N% of project and all other approved projects?. If domestic Water or public sewers are not available, how will these services be provided? 1 - PM 22178 a t' • i 17f 1' fP • l. r Environmental Setting --- Project Site a. Existing use/structures Vacant b. Topography/slopes existingr rough r a c. vegetation N/A d. animals N/A e. Watercourses N/A f. Cultural/hiatorical resources N/A g . other 2. Environmental Setting --- =roundi.ng Area a. Existing uses/structures (types, densities) : several Commercial/Industrial buildings b. Topography/slopes The entire Tract G a ads and all the infrastructure and sireets c. vegetation N/A d. Animals N/A e. Watercourses N/A f. Cultural/historical resources N/A I g. Other 3. Are there any major trees on fY7 u yes, type and nurber: the site, including oak trees? 4. Will any natural watercourses, surface flow patterns., etc, be changed through project development?: /V 97 if yes, explain: Anzwers are not required if the area does not contain natural, undeveloped land. 3 — PM ZZ. 1-7 $ B . ENVIRONMn AL INFOMIATION ( Con t . ) 5. Are there any parks (Regional, County, local) or trails located within a one mile radius of project? /A7 if yes, please identify: Maple Hill Park 6. Grading: will it beIfes, how manyWilltheprojecty balanced on site? require grading?., cubic yards? 4,000 If not balancedr where will dirt be obtained or deposited? Are there any identifiable landslides or other major geologic hazards on the property including uncanPacted fill" /t% 0 If yes, explain: S. is the property located Within a high fire hazard area (hillsides with moderately dense vegetation? %Y% Distance to nearest fire station: 9. Noise: Existing noise sources at site: None Noise to be generated by project: None 10. Fumes: odors generated by project: None Could toxic fumes be generated? None 11. What energy --conserving designs or material will be used? unknown at present 1 C=IFICATION: I hereby certify that the state:aenta furnished above and in the attachedexhibitspresentthedataandinformationrequiredforthisinitial evaluation to the boat of my ability, and that the facts, statements, and information presented are true and correct to the best of lay knowledge and belief. Date: g d gnature) or: C P Lange Engineers 4 - 8/85 Residential projects: L1. Number and type of units: 12. Schools: what school district(s) serves the property? Are existing school facilities adequate to sleet project needs?,needs?,ff7 %NN' If not, what provisions will be trade for additional classrooms? 13_ Distance to: Neighborhood Commerical Major Employment ion -Residential projects: 14. Distance to nearest residential use or sensitive use (school, hospital, etc.) Public Park 1500' 15. Humber and floor area of buildings: N/A 15. tdumber of ,employees and shifts: N/A 17. maximum employees per shift: N/A Operating,oa-rU._.,-__ N/A IS. Identify any: End products N/A Waste products N/A Means of disposal N./A 19. Do project operations use, store or produce hazadous substances such as oil, pesticides, chemicals, paints, asbestos or radioactive materials? l If yes, explain: I - 20. Do your operations require any pressurized tanks? C&7 If yes, explain: 21. Identify any flammable, reactive of explosive materials to be located on -site. None 22. Will delivery or shipment trucks travel through residential areas to react: the nearest highway": / If yes, explain: 1wic cry of Dfamgnd Bar 6" S Y F PLEY DRIVE suns 100 • - 21660 EAS' CQ CA 91763-177DYAMQND $`' 714-161 i7 714560- 2485 FAX ter . Background: _ t _ Name o#.ApP= 2 p,d r ss and Phone qurnb er of Pm rzent: - 4_ Date•of Envirc S. Date of EnvironmerrW Check'st, Subam nmental determination): S. Ccations (under the authority of tf is erNiroFtC.i ed A! Yes NO / Varianca: Candltlonal Use Permit: Zone Change'- General Plan Amendment: ental riyfor,7rafion r-arm) MachCcmplefdv# rorim ROH RT i. YAN NOR? GARY G. & iaj-s JOHN city B4.R pAL3I;Y. gORG R GAJ Cam m-YLLZ PAPS s MaY T _ _ , .. e-a a rr" P 4PC IL Environmental Impacts: lanatlons and addFtlonal lnfnrnratlon to supplement all "fires" and "possibly" answers are required to be s(itted an attached sheets) yes No Possibly 1. Earth. Will the proposal result In: a_ Unstable earth condtions or changes in ge ologicis substructures? b. Disruptions, dsplacements, compaction or overcovering of the soil? 8C. Change in topography or round surface relief features? d. T'ne destruction, covering or modification of any unique geologic or physical feature? e. Any increase in wind or water erosion of soils, either on or off the site? - - f. Changes in deposition, erosion of stream banks or Land adsacent to standing water, changes in si[tatson, deposition or other processes which may modify the channel of / constant or intermittently flowing water as well as the areas surrounding permanent or intermittent standing water? g.- Exposja of people or property to geologic hazards such s earthquakes, landslides, _ rrludslides, ground failure, or similar hazards? x. Air. Will the proposal result in: a. Substantial air emissions or deterioration of ambient air qualitf' - — b. The creation of objectionable odors? — c. Alteration of air movement, moisture, or temperature, or any changes in cirnate, either locally or regionally? -- 3. Water. VYfll the proposal result In: a. Changes in currents or the course or direction of water movements? — b. Changes in absorption rates drainage patterns, or the rate and arnount of surface runoff? _--- c. Alterations of the course or flow of flood waters? E d. Changes in the amount of surface water in any body of water'? e. Discharge into surface waters, or in any alteration of surface water quality including but not limited to dissolved oxygen and turbidity? f. Alteration of the direr -ion or rate of flow of ground waters? —~ g. Change in the quantity of ground waters, either through direct additions or withdrawals, or through interception of an aquifer by cuts or excavations? --' h. Substantial reduction in the amount of wafer otherwise available for public water supplies? 1. Exposure of people or property to water related hazards such as flooring? — Will the proposal result in: " 4. Plant Life. species of giants (rtciudirtg tress, a. Change In the diversity of species, or number of any shrubs, grass, crops, and aquatic Plants)?ecies of plants? b. Reduction in the numbers of any unique rare or endangered sp sized lion in the size of sensstive habitue areas or plant communities which are recapC. Redu as sensrive'2 species of into an area, or in a barrier to the n°mil _ d. introduction of new esreplenishmentofexistingspeci e. Reduction in acreage of any agricultural crop? Yes No Possibly g, An Life_ Wlll the proposal result In: (birds, land ' species, or number of any species of animals is ? a. Change in the diversity of an'sms and insects) . animals udng reptiittes, fish and shellfish, benthic org on in the numbers of any dnique rare or endangered speciet normal migrationb. Reducit C. Introdu n of new species of animals into an area, Orin a bazrier to or movement of resident species? d. Reduction in size or deterioration in quality of existing fish or wildlife habitat? people to severe noise levelsb. E.osure of peop — I result in: 7. Lightre. WUandGlal the proposa utlt sign cartt!y to existing levels of light and glare? a. Significant new ligi t and glare or contnb sal result In: S. Land Use. Will the ProQoa. A substantial alteration of the present or planned land use in an area?• . 9. Natural Resources- Will the Pro posal result ln: a. An increase in the rate of use of any natural resources? VvIU the proposal involve: 10. Risk of Upset. ous suhstancas (including but not limited explosion arthe release of hazard set =rtditlon? a. A risk of an exp 'in the event of an acc.dent or up Ian? to, oil, pesticddes, chemicals or radtat3on) encl ev=eon P b. Probable interference will: art emergent, response plan or an emerg B. Nolm Villl the proposal rasuit In: a. Significant increases in existing noise levels? Ion, Wltl the proposal: 711. popular population of an area? distnbution, density. or growth rate of the human popAltertheiocaifon, 12. Hau sing. Will the proposal affect: a. Existing housing, or create a -demand for adacnal hcus ng? Wlll the proposal result in: 13. Transportationlcircuiation. additional vehicular movement? a. -Generation of Substantiai artang facilities or deand for new parking?. m b. Effects on existing p impact on existing transpo daffon systems? c. Substantial to patterns of circulation or movement of people and goads. d. p,ltertions present e. Alterations to waterborne, rail or air traffic? f. Increase in traffic hazards to motorvehicles, bicyclists or pedestrians? 14. Public ServlCes. Will the proposal: overnmental services in any forneworalteredga. Have an effect upon, or result to the need of the follovving areas: 1. Fire protection? 2. Police protection? 3. Schools?- 4. Parks or other rrrcreatiorial #acrTiiies? S. Maintenance of public facilities, including reads? 6. Other governmental services? 1s. Energy. Will the proposal result In: a. Use of substantial amounts of fuel or energy? sources or require the development a demand upon existing energy b. Substantial inc: ease in of new sources energy? 16. Utilities. Will the proposal result in: utilities? a. A need for new systems, or Substantial alterations to public - City of Diamond Bar'nitlaf 5tur Fm vac No Possmly al result in: 17. Human HeaKh. yYil! the propos- health hazard or terrtlai health hazard (excludingmew heaRh L Creation of any . po t/ Exposure of people to potential health hazards? 78: Aesthet[cs, Wi!! the pro p ub c, or will the proposal result in a. The ohstruc ion of any sceniasai result In: c vista or view open to the p the creation of an aesthetically offensive site open to the public view? 9. Recreation. W111 the propanal result in: opportunities.? I. An impact upon the quarfiy or quantity of existing recreational Will the proposal result in: M. cultural Resources. ric archaeological site? a. The alteration of or the destruction of a prehistoric or histo Pre or historic building, structure or obSect'? b. Adverse physical or aesthetic effects to a p c. A physical change which would affect unique ethnic cultural values? xistingreligiousorsacreduseswithinthepotentialimpactarea. d. Restrictions on e—`~ Cl y of Dl,,Mand Bar Wttlal SardY FwWPage6 Yes No Passlbly 21. U12ndatcrY Flnd'InGs of Slgniflc ance? - of the environment, have the potential to degrade the quality . a_ Does the proPas project t or wildlue specles, cause a fish or substantia ty reduce the habitat of a in, levels, threaten to eliminate or wildIds population to drop below sell systaireduceaplantoranimalcommcsnii7/. reduce the number or restrictsignificantlyl cO or animal or eliminate important _ the range of a rare or endangered p or rehistorP-— examples of the major periods of Cairfomia history p project have the potential to achieve short-term, to the disadvantageb. Does the proposed rip ojectl goals. ~~ oflong-term, ro sect project pose impacts which are individually limited but cumulatively c. Does the p "— considerable . the roject pose environmental effectwitl cause substantial adverse d. Does p either directly or -- effectsonhumanbeings, - 111 Discussion of Environmental Evaluation: Atiaett Narrative) ` ll IV. Determination: On thebasisof this initial evaluatlon: that theroposedprojectCOULDNOThave a significant effect on the environment, find NEGATIVEDEC17RATIONwillbeprepandaNEprojectcould have El - a sign cant effect on the ernirorirrie I find that a[thaugh the proposed a ropo5ed project. there willnofbeasignificanteffectinthiscaseintotisepthemitigationmeasuresdescribe: on the attached eet have been A MMCMATED NEGATIVE DECLARATIinccQN WILL BE PREPARED. find that the proposed project MAYD av T is irgeqficard red. effecton the ernimnmertt, and an EWlRCNMENTAL IMPACT RE. CR q igi ate: CGlomia For theCRYofDiamond, OAK.TREE STATEMENT. The subject property contains no oak trees. The subject property contains one or more oak trees, however the applicant anticipates that no activity (grading and/oL construction) will take place within five (5) feet of the outer I" ipline of any oak tree. The subject property contains one or more oak trees and the applicant states that activity (grading and/or construction) will take place within five (5) feet of the outer dripline of any oak tree. An Oak Tree Permit has been or will he applied fo-r prior to any activity taking place on the property: AppliFiant's signature OTS 89MG Z 9 gat? pA a 7-1-7$ Y m 0Wcc1W z y Q h 40 W0 U } F LL O0 U A— tib o n cm a, z Val 0 O Ej 1r ilk l1p t yW 9S- 1z- r [y6F 116.5 3 am Y a6 ot o r is ti f .fie T a M3 vg J o I eO IVA;!} j V 3 o' 4 LL . r 4 n 5 ` a yCLe Ln a 62'1Tr y Ls\Zt .4' as ear Z. '" ED luL• Z co mr- co 31yp uN 4•y 7d Alrar y fff ti O . SZ I M yyw oq T 7] V7Drr'+ D 0 { O C Cr -4S O M UI m m VC' O 3 n r nOv0A cz 3 O4rb O N r p C m Gf XD m v z • _ 0 vM z n 3C - to b v znD Z O rr3 n CD o r C] Nco C N O a r n p _ { 0 p M n W m ZrnO Z O O p Z u) A C Z D NNOto M ocC 45, zz d rn ro z r% N co Z O ao4 -4 O --4m Y O n rr0 Z oN0 v C M. M z G V z m rr x r o r MEMORANDUM TO: Planning Commission FROM: Irwin M. Kaplan SUBJECT: Staff Review of Project with Applicant. Several important issues were raised at the August 13 Planning Commission meeting with respect to the Parcel map applications for Gateway Center. The issues fall into two major categories. 1. The scope of the Commission's authority over development proposals in the Gateway Center in light of the October 17, 1989 resolution adopted by Council. 2. The adequacy of the traffic mitigation measures previously approved for the Gateway Corporate Center Project. A. with respect to the Commission's Review Authority, the City Attorney requested an opportunity to study the matter and report back. A memo from the City Attorney is submitted separately. B. with respect to the adequacy of traffic mitigation measures staff, has met with the applicant and indicated that it would recommend to the Planning Commission that the following information be provided to the City so that an informed decision could be made and additional conditions imposed, if deemed appropriate. The applicant has indicated a willingness to prepare the updated information and to abide by a requirement for amended mitigation measure which reflect the applicant's pro-rata share of additional mitigation costs, but has also indicated that such information would provide a month to prepare. Since the applicant is concerned bout further delaying a decision on the project, the applicant has requested Commission approval at this time, with a commitment by the applicant to abide by conditions which would be established at a later date, after the appropriate mitigation measures have been identified. The City Attorney has been asked to suggest a procedure whereby this might be achieved and will respond separately. 1) Recognizing the changing nature of the project, it is recommended that an overall pedestrian plan be prepared which connects likely destinations within the Center by way of the shortest feasible routes. The plan should be designed to overcome the reluctance of people to walk unprotected from direct sunlight during the heat of the day. The plan should also be supported with a program which assigns responsibility for development of the Pedestrian Network. 2) It is recommended that the traffic mitigation measures be systematically reviewed and updated, using a procedure along the following lines. a) Estimates of ultimate buildout should be prepared, using known development information when available and making explicit assumptions as to the size and type of development for the remaining parcels. (The purpose is to have a basis for a revised Trip Budget. obviously, actual development will be different.) b) The assumptions used for the ambient growth rate should be reviewed and modified, if appropriate. c) The cumulative impacts of specific projects in the area inside and outside Diamond Bar) which would affect transportation to and from the project area should be reviewed and updated to include known projects of significance. d) Using explicit trip, generation assumptions for the various uses, an update of trip generation characteristics should be prepared. e) A revised Trip Budget should be prepared for the project. f) The program of traffic improvements proposed for the roads affected by project area traffic should be reviewed and revised as may be dictated by the revised information. This should identify Gateway's pro-rata share of the cost of these improvements. g) The Trip Budget should then be allocated among the various traffic improvements, so that there is a way to determine that the rate of development will keep pace with the provision of the improvements which are intended to mitigate the impacts of development. i) Although funds have been paid by the developer toward certain traffic improvements, some of the improvements have not been constructed, for reasons outside the developer's control. The Planning Commission may wish to credit these improvements against the Trip Budget, even though they have not been constructed. ii) Conversely, improvements not yet in place and operational, should not be credited against the Trip Budget. These would include any Transportation Demand Management (TDM) related programs, as well as physical traffic improvements. JAMES L, MARKMAN ANDREW V. ARCZYNSKI RALPH D. HANSON F. ELLIOT GOLDMAN JEFFREY KING D. CRAIG FOX MARTHA GEISLER PATTERSON WILLIAM P. CURLEY III MEMORANDUM TO: FROM: 2'f-- e -I cjYO Cdp{p)Z t.(i ipLpla NUMBER ONE CIVIC CENTER CIRCLE P. O. BOX 1059 BREA, CALIFORNIA 92622-1059 TELEPHDNE{L r ( 714) 990- 0901 213( 691-3811 August 23, 1990 Irwin Kaplan Acting Director of Planning William P. Curley, III j Deputy City Attorney 9113 FOOTHILL BOULEVARD SUITE 200 RANCHO CUCAMONGA, CALIFORNIA 91730 7l4( 980-2742 TELEPHONE 714) Sal- ozla IN REPLY PLEASE REFER TO! Brea RE: Opinion Regarding Applicability of City Council Resolution No. 89-104 to Subsequent Subdivision of Parcels in Gateway Center" Project I have thoroughly reviewed Resolution 89-104 of the City Council (October 17, 1989). This Resolution provides the following relevant information: 1. Recital v ( Page 2) establishes that "Diamond Bar Business Associates" recorded a Master Declaration of Covenants, Conditions and Restrictions (hereinafter CC&R's). The CC&R' s adopted and approved a document intended to guide and direct development within the project; the document is identified as the " Gateway Corporate Center - Diamond Bar Design Guidelines." This document appears to provide both general and site - specific standards to which development projects must adhere. The "adherence" requirement ostensibly arises from a review and concurrence by the City that the implementation of such standards will result in improvements which advance and benefit the City. 2. Recital vii ( Page 3) establishes that the express purpose of Resolution 89-104 is to "reconfirm and ratify the Design Guidelines as heretofore amended, "[amended July 1988, Recital vi]" in order to insure that the same are utilized and implemented with respect to property developed in Gateway.' (Emphasis added). Memorandum to: Irwin Kaplan August 23, 1990 Page Two 3. The Resolution (Section B) establishes in Section B-3 that "the Design Guidelines, . . . shall be ., applicable to all projects in Gateway and City staff, consultants and developers of projects within Gateway hereby are directed to implement the same." (Emphasis added). 4. The City is provided an opportunity to reconsider the Resolution pursuant to Section B-5 wherein the City is to be provided any "proposed amendments, modifications or changes to the Design Guidelines and/or the Master Declaration." It is likely that this opportunity for review is intended to allow the City to determine if the proposed change satisfies the City's standards. The above -referenced excerpts from Resolution 89-104 lead to specific conclusions: 1. All involved parties, with the possible exception of the Planning Commission, are required to follow the 1988 version of the Design Guidelines. Adhering to the Design Guidelines would expressly require denial of the tentative subdivision map on the basis that the "small lot" development scheme is not set forth in the Design Guidelines which the Resolution requires to be implemented. Further, it has not been demonstrated that the previous environmental reviews which considered the impacts related to "large lot" projects are accurate and applicable to small lot subdivisions. 2. If the subdivision map submittal is to be considered the provision to the City of the proposed changes pursuant to Section B-5 of the Resolution, then the Planning Commission should feel free to make what it considers to be the appropriate recommendations regarding the site development, including Conditional Use Permits, etc. Such proposals by the Commission should consider both amendments to the Design Guidelines and factors associated with the subdivision map. The City Council must then consider the proposed revisions to the Design Guidelines and determine what modifications to Resolution 89-104 are appropriate. Concerns regarding traffic -related impacts are most appropriately responded to via the environmental review process as set forth in the California Environmental Quality Act CEQA). The CEQA process allows environmental issues to be resolved prior to action on a subdivision request. The determination achieved as a result of the environmental investigation serves as a basis for the approval or denial of the subdivision map pursuant to Government Code § 66474 (Map Act). I don't recommend applying prospective conditions to mitigate unknown impacts. By this I mean that a condition applied to the map approval that generally requires the ems' ' ,. t s Memorandum to: Irwin Kaplan August 23, 1990 Page Three applicant to review traffic issues, then, if necessary, develop and implement some mitigation measures is inherently vague and may pose enforcement problems. There is the possibility that sufficient time may exist for the applicant to prepare the necessary traffic analysis so as to support a "mitigated" negative declaration. Such would depend on when the application was deemed complete; the time left with the 120-day period from the date the submittal was deemed complete would define the "working time" left for the applicant to develop and gain Commission concurrence for a "mitigated" negative declaration. Alternatively, the applicant could consider withdrawing the map at present, prepare the necessary traffic analysis, and resubmit a complete set of documents. I believe this responds to the inquiries raised regarding the present submittals. Please feel free to contact me at your convenience regarding this matter. WPC:pmm L\1011\MKAPLAN\DB 6.11A MEMORANDUM TO: Planning Commission FROM: Irwin Kaplan, Interim City Planner SUBJECT: CONTINUED PUBLIC HEARINGS: Parcel Map 22178 and 22102 DATE: The attached reports respond to the issues raised at the August 13 Planning Commission hearings on Parcel Map 22178 for the creation of 12 lots and 22102 for the creation of 2 lots at Gateway Corporate Center. The report from the Interim Planning Director recommends conditions to assure that the project will adequately mitigate on -site and off -site circulation impacts attributable to the development of Gateway Center. The letter from the Deputy City Attorney responds to the Commission's question as to its scope of authority in the Gateway Center Review process. It also responds to a request from staff for procedure whereby the Commission might act upon the current proposal, conditioned upon mitigation measures not fully identified or in place. 1. The letter from the Deputy City Attorney recommends against applying prospective conditions to mitigate unknown impacts. It concludes that the vagueness will create enforcement problems later on. 2. The letter also concludes that the subdivision map submittal is a departure from the design guidelines which require approval by the City. In its review, therefore, the Planning Commission may recommend the imposition of whatever conditions it deems appropriate. 3. The letter does not address the question of the Commission's scope of authority over Gateway Center development if the subdivision request were to be withdrawn. The Commission may wish to pose this question to the City Attorney on Monday. CONCLUSION Based on the new information, therefore, it appears that the Planning Commission may: 1. Deny the request. 2. Grant the applicant time to prepare the information needed for a "mitigated" negative declaration, provided that it allows enough time for the Commission to take action within 120 days from the time the application was deemed complete. The Commission action may be combined with number 113" below. 3. Recommend approval of the request, together with whatever appropriate recommendations the Commission deems appropriate regarding site development and procedures. 4. Alternatively, the applicant may wish to withdraw the request if there is not enough time to complete the necessary studies and resubmit the information when it is compiled. REISSUED FOR AUGUST 13, 1990 AGENDA NO. PLANNING COMMISSION AGENDA REPORT DATE: July 19, 1990 MEETING DATE: July 23, 1990 - TO: Honorable Chairman and Planning Commission VIA: Dennis A. Tarango, Planning Commission Secretary FROM: Irwin Kaplan, Interim Planning Director BY: Rob Searcy, Assistant Director of Planning SUBJECT: Environmental Assessment and subdivision 90-0052 (Vesting parcel Map 22178): An application to subdivide a 13.35 acres parcel into 12 lots ranging from .50 to 1.76 acres in size. APPLICANT: Zelman Development Company 1. PROJECT AND SITE DESCRIPTION A. Action requested: Issuance of a Negative Declaration and approval of a Parcel Map. B. Surrounding Land Use and Zoning. North - Days Hotel. Zoned for commercial manufacturing uses. South - Vacant. Zoned for commercial -manufacturing uses. East - South Coast Air Quality Management District. Zoned for commercial -manufacturing uses. West - Office park. Zoned for commercial -manufacturing uses. C. Community Plan DesignaI tion Project Site: Commercial North: Commercial South: Open Space East: Commercial West: Commercial D. Site Characteristics: The 13.35 acre site is zoned for commercial - manufacturing uses, and is part of the Gateway Corporate Plaza. The site is vacant, and has been rough graded.. The site contains a 20% landscaped slope from the south, east and west, comprising about 5 acres of the s i te. The remainder of the site is relatively level. Sewer and water -line structures have been installed on site. The site has direct access to Copley Drive from the south, Gateway Center Drive from the north and Valley Vista Drive from the west. BACKGROUND Gateway Corporate Center was approved by the County of Los Angeles Board of Supervisors under a "Unilateral Contract" procedure in 1985. Under this procedure, the zone changed to Commercial - Manufacturing (CM) (which allows for unlimited height, a floor area ratio of 13 times the net buildable site area and a wide range of commercial and industrial uses) which were further restricted through CC & R's which were recorded with the zone change. The CC & R's incorporate design guidelines 'by reference, which establish height limits (from 9 stories) and narrow the range of uses. There have been subsequent changes in the CC & R's and the design guidelines). Additionally built into the unilateral contract, is the provision that any revision of the CC&R's is to be approved by the governing authority, now the City Council of the City of Diamond Bar. The City Council assumed this role from the Board of Supervisors upon incorporation and in October 1989, the City Council adopted Resolution No. 89-104 ratifying and reconfirming design guidelines for Gateway Center. The guidelines are.more restrictive than the -Commercial - Manufacturing Zone standards, therefore these guidelines regulate development within the center. In addition, all development in the center must be in accordance with all applicable state and local laws such as CEQA, and local codes. The subdivision of this parcel is not accompanied by any development project. This procedure of subdividing without the ability to review future development strategies has in the past created concern b.ylstaff, Planning Commission, and the City Council. In the case of this application, the single parcel will become 12 independent sites which may or may not be developed in tandem with adjacent lots so that it may be difficult to coordinate design, land use and site access. If the current development throughout Gateway can be viewed as an indication of the future development, the exterior architectural features may not be consistent. The controls currently in place require the Gateway Architectural Review Committee -to perform the review of all development projects. For this subdivision application, the design review committee approved the parcel map as submitted. Presumably, by virtue of resolution 89-104, development proposals would be reviewed by both the City and Gateway's design review committee in accordance with the Gateway Corporate Center design guidelines. The guideli-nes also state that any building which exceeds 5 stories -or 75 feet in height is subject to a Conditional Use Permit._ It would also appear that the design guidelines would provide the basis for project evaluations unless the City were to adopt more restrictive regulations. CONCLUSION AND RECOMMENDATION Although -the design guidelines regulate development within the Gateway Corporate Center, circumstances have changed in the overall area since project impacts were originally evaluated in the December 1982 E.I.R. Aside from changes in project impacts which may occur within the site as a result of approval of the parcel map the cumulative impacts of changes in surrounding areas (e.g. types and intensity of development, traffic, changes in the circulation system) may also alter the anticipated environmental impacts. If the Commission feels that circumstances warrant updated information on the project as a whole, then it is suggested that a supplemental E.I.R. be prepared which would address these issue before action is taken on the parcel map. If a supplemental E.I.R. is to be prepared, it is also suggested that the Commission identify those issues it feels need to be addressed as part of the supplemental E.I.R. If the Commission determines that the information is adequate for a decision and wishes to approve the Parcel Map, then it should direct staff to prepare conditions to be presented at the next Commission meeting. PROOF OF PUBLICATION 2015.b C.C.P.) STATE OF CALIFORNIA, County of Los Angeles 1 I, — . F do hereby declare that I am a citizen of the United States; I am over the age of eighteen years, and not a party to or interested in the above -entitled matter. I am the Legal Advertising Clerk of the INLAND VALLEY DAILY BULLETIN Formerly the Progress Bulletin) a newspaper of general circulation, printed and published daily in the City of Pomona, County of Los Angeles, State of California, and which has been adjudged a newspaper of general circula- tion by the Superior Court of the County of Los Angeles, State of California, under the date of June 15, 1945, Decree No. Pomo C-606; that the notice, of which the annexed is a printed copy set in type not smaller than nonpareil), has been published in each regular and entire issue of said newspaper and not in any supplement thereof on the following dates, to -wit: January 7, 1991 I declare under penalty of perjury that the foregoing is true and correct. Dated January 7, 1991 Signature Proof of Publication of NOTTC7 OE 21JALIC HEARING PE. ZL'LMAN DFVFLOPMFNT Co. CITY 0'7 DIAI'OND 'RAP NOTICE OF PUBLIC HEARING The City Planning Com- mission will conduct a public hearing on: A request for a Develop- ment Agreement for Gate- way Corporate Center located south of the $7 (Or- ange) Freeway and off Gold- en Springs Drive. The Development Agreement will allow office and commercial development within the Cor- porate Center. The Develop- ment Agreement will decrease development densi- ty and restrict land uses to office and commercial devel- opment. All ordinances in effect at the time of adoption of the Development Agree, ment will serve as the devel- opment standard. APPLICANT: Zelman Development Com- pany on behalf of Diamond gar Business Assoclailon ENVIRONMENTAL DETERMINATION: Categorical Exemption NOTE: If you challenge this deveiopment agreement In rourt, you may be limited to raising only those Issues you or someone else raised at the public hearing de- scribed in this notice, or In written correspondence de- livered to the Planning Com- mission at or prior to, the publlc hearing. If you are unable to attend the public hearing but wish to send written comments, please write to the City Plan- ning Department at the ad- dress given below, Attention: JAMES DE STE, FANO. You may also obtain additional information cerning this case by phoning the Planning Department at 714) 060-2714. Materials for this case are also available at: Diamond Bar County Library 1061 South Grand Avenue Diamond Bar, CA 91765 DATE OF NEARING: January 28, 1991 TIME OF NEARING: 7:00 P.M. LOCATION OF HEARING: Walnut Valley School District 980 S. Lemon Ave. Diamond Bar, CA 91765 CASE MATERIALS AND E N V I R O N M E N T A L STUDY: Are available for review during regular busi ness hours at; City of Diamond Bar Planning Department 21660 East Copley Drive, suite #190 Publsh: January 7, 1991DC27127} I . T PROOF OF PUBLICATION 2015. C.C.P.) I;jr OF CALIFORNIA i SS. COUNTY OF LOS ANGELES ) CITY OF DIAMOND BAR NOTICE OF PUBLIC HEARING APPLICANT: ZELMAN DEVELOP. CO. 1 am a citizen of the United States and a resident of the County aforesaid; I am over the age of eighteen years, and am not a party !o or interested in the above entitled matter. I am the principal clerk of the printer of the Inland Valley Daily Bullelin, (formerly the Progress Bulletin), a newspaper of general cir- culation in the County of Los Angeles, and which newspaper has been adjudged a newspaper of general circulation by the Superior Court of the County of Los Angeles, State of California, under date of June 15, 1945, Decree No. Porno C-606; that the notice, of which the annexed is printed copy, has hee-n published in each regular and entire issue of said newspaper am not in any supplement thereof n the foilowi.ng dates, to wit: Dee er- 20, all in the yeor 14 r . I certify ;or deciore) under penalty of perjury that the fofegoing is !rue and correct. i Sign Dole r C 19 DailyBulletin LEGAL ADVERTISING SERVICE 714) 987-6397, ext. 494 This space is for the County Clerk's filing stamp 1 NOTICE OF PUBLIC HEARING The City Planning Commission will conduct a public hearing on: A request for a Development Agreement for Gateway Corporate Center located south of the 57 tOrange) Freeway and off Golden Springs Drive. The Development Agreement will allow office and commercial development within the Corporate Center. The Development Agreement will de- crease development density and restrict land uses to office and commercial development. All ordinances (n effect at the time of adoption of the Development Agreement will serve as the development standard. APPLICANT: Zelman Development Corporation on behalf: of Diamond Bar Business Association. ENVIRONMENTAL DETERMINATION; Categorical Ex- emption NOTE: If you challenge this development agreement in court, you may be limited to raising only those Issues you or someone else raised at the public hearing described in this notice, or In written correspondence delivered to the Planning Commission at or prior to, the public hearing. If you are unable to attend the public hearing, but wish to send written comments, please write to the City Planning epartment at the address given below, Attention: James 0 Stefano. You may also obtain additional information concerning this case by phoning the Planning Department at (714) 860-2314. Materials for this case are also available at: Diamond Bar County Library 1061 South Grand Avenue Diamond Bar, CA 91765 DATE of HEARING January 14, 1991 TIME OF HEARING: 7:U0 p.m. - LOCATION OF HEARINOdnut Valley School District 880 S. Lemon Ave. Diamond Bar, CA 91765 CASE MATERIALS AND ENVIRONMENTAL STUDY: Are available for review during regular business hours at: City of Diamond Bar Planning Department 21660 East Copley Drive, Suite #190 Diamond Bar, CA 91765 I.V.DAILY BULLETIN/POMONA DC 25730 Pub. Dec. 20, 1990 300 S. Thomas St. P.O. Box 2708 Pomona, CA 917b6 Pomona, CA 91769 i( PROOF OF PUBLICATION This space is for the County Clerk's Filing Stamp 2015.5 C.C.P.) STATE OF CALIFORNIA, County of Los Angeles, am a citizen of the United States and a resident of the County aforesaid; I am over the age of eighteen years, and not a party to or interested in the above- enf'fled matter. I -am fhe principal clerk of the printer of theiGoori---- ---Tribuie. a newspaper of general circulation, printed and published 4a.i ....-- - --- in the City of ---------- ----------------------------------- County of Los Angeles, and which newspaper has been adjudged a newspaper of general circulation by the Superior Court of the County of Los Angeles, State of California, under the date of ----- S.ep_-L._-_.0- ..... , 19_51, Case Number ..... g 91_.__._------------- that the notice, of which the annexed is a printed copy (set in type not smaller than nonpareil), has been published in each regular and entire issue of said newspaper and not in any supplemenf thereof on the following dates, to -wit: December 19r all in the year 19---- 9.0 I certify (or declare) under penalty of perjury that the foregoing is true and correct. Dated at rest Covina th California, this _19__ day of -------- Decem4er.... 19--- 9-0 1_44S z_ ............... Signature Proof of Publication of NOTICE OF PUBLIC HEARING DEVELOPMENT AGREEMENT CITY OF DIAMOND BAR NOTICI PUBLIC F The City Pla Sion will conduc Ing on: A requei ment Agreemei Corporate Cenh of the 57 (Dram oil Golden SO Development Al low office and velopment with center. The Agreement will opment density uses le office developmant. All ordinances in eftecl at the time of adoption of the Developmmenl Agreement will serve as the develoopment standard. APPLICANT: Zelman Devel- opmenl Company on ban" It of Diamond Bar Business Assocla- flan. ENVIRONMENTAL DOCUMENTATION: Catergorigal Excern"on NOTE: If you challenge this development agreement In . Court, you may be limited to raising only those Issues you 07 someone elw raised at the pub tic hearing described In this notice, or in written correspond* ence delivered to the Planning Commission at, or prior to, the public hearing. If you are unable to attend the public send writtenhcomments, wishearing buttoWrite to the City Planning Depart - men! at the address below, At- tenfion: James DeStefano. You may also obtain additional inlor. motion concerning this case by phonlll the Planning Depart mentat (7141 860-1314. Material far This case are also available at: Diamond Bar County Library 1061 South Grand Avenua Diamond Bar, CA 91765 DATE OF NEARING: January 14, 1991 TIME OF HEARING; 7'.00 P,M. LOCATION Of HEARING: 1 Walnut valley SchnaI District BID South Lemon Avenue Diamond Bar, CA 91765 LASE MATERIALS AND ENVI- RONMENTAL STUDY: Are available for review during reg, ular office hours at City of Diamond Bar Planning Department 21640 E. Copley Drive, Suite 190 Diamond Bar, CA 91765 Pub. SG VT: December 19, 1990 x': r PROOF OF PUBLICATION This space is for the County Clark's Filing Stamp 2015.5 C.C.P.) STATE OF CALIFORNIA, County of Los Angeles, I am a citizen of the United States and a resident of the County aforesaid; I am over the age of eighteen years, and not a party to or interested in the above - entitled matter. I am the principal clerk of the printer of the ..... Gabrie}-__V 1 y.._aaUy...Tr1b11ne,. a newspaper of general circulation, printed and published daily ---------------------•---------------- in the City of ---------- 4Qst---Q.Ouu1---------------------------- -------- County of Los Angeles, and which newspaper has been adjudged a newspaper of general circulation by the Superior Court of the County of Los Angeles, State of California, under the date of .._..SP_PLt._.d.0...... 19__57_, Case Number .......... a4_91_-------------------- that the notice, of which the annexed is a printed copy (set in type not smaller than nonpareil), has been published in each regular and entire issue of said newspaper and not in any supplement thereof on the following dates, to -wit: January 7, 91 all in the year 19___ .. I certify (or declare) under penalty of perjury that the foregoing is true and correct. Dated at ...__-...Test Covina th California, this .____ day of ..._____--Janaar------ I9 9l Signature Proof of Publication of NOTICE OF PUBLIC HEARING Development Agreement - Gateway Corporate Center - D NOTICE OF PUBLIC HEARING The City Planning Commis Sion will conduct a public hear ing on: A request for a Developmen' Agreement for Gateway Col rate Center located south of III' 57 (Orange) Freeway and of Golden Springs Drive, The De velopment Agreement will alloy office and commercial develop ment within the Corporate Cen ter. The Development Agree ment wilt decrease developmen density and restrict land uses 1 office and commercial develop meni, All ordinances in effect a the time of the Developmen Agreement will serve as th development standard. APPLICANT: Zelman DevelGpmeM Compan on behalf of Diamond Bar Bus ness Association ENVIRONMENTAL DETERMINATION: Catergorial Exemption NOTE: If you challenge th development agreement court, you may be limited raising only those issues you I someone else raised at the pui lic hearing .described in ih notice, or by written corr spondence, delivered to tl Planning Commission at, or priorlf you are unable to attend the public hearing, but wish to send written comments, please write to the City Planning Depart ment at the address given beL low, Attenion: James Destefano. You may also obtain additional information concern ing this case by phoning the Planning Department at (7141 060 2714. Materials for this case are also available at: Diamond Bar County Library 1061 South Grand Avenue Diamond Bar, CA 91765 DATE OF HEARING: January 28, 1991 TIME OF HEARING: 7:00 P.M. LOCATION OF HEARING: Walnut Valley School District 030 South Lemon Avenue Diamond Bar, CA 91719 CASE MATERIALS AND ENVI- RONMENTAL STUDY: Are available for revlew during reg- ular business hours at: city of Diamond Bar Planning Department 2160 East Copley Drive Suite #190 Diamond Bar, CA 91765 Pub, SGVT: January 7, 1991 E. No. 7275 4t r in NOTICE OF PUBLIC HEARING The City Planning Commission will conduct a public hearing on: A request for a Development Agreement for Gateway Corporate Center located South of the 57 (Orange) Freeway and off Golden Springs Drive. The Develop- ment Agreement will allow office and commercial development within the Cor- porate Center. The Development Agreement will decrease development density and restrict land uses to office and commercial development. All ordinances in effect .at the time of adoption of the Development Agreement will serve as the development standard. APPLICANT: Zelman Development Company on behalf of Diamond Bar Business Association ENVIRONMENTAL DETERMINATION: Categorical Exemption NOTE: If you challenge this development agreement in court, you may be li- mited to raising only those issues you or someone else raised at the public hearing described in this notice, or in written correspondence delivered to the Planning commission at or prior to, the public hearing. If you are unable to attend the public hearing, but wish to send written com- ments, please write to the City Planning Department at the address given be- low, Attention: James DeStefano. You may also obtain additional information concerning this case by phoning the Planning Department at (714) 860-2314. Materials for this case are also available at: Diamond Bar County Library 1061 South Grand Avenue Diamond Bar, CA 91765 DATE OF HEARING: January 14 1991 TIME OF HEARING: 7:00 b. LOCATION OF HEARING: Walnut ValleV School District i 880 S. Lemon Ave. Diamond Bar, CA 91789 CASE MATERIALS AND ENVIRONMENTAL STUDY: Are available for review during regular business hours at: City of Diamond Bar Planning Department 21660 East Copley Drive, Suite #190 Diamond Bar, CA 91765 Published in: San Gabriel Tribune on December 17, 1990 Inland Valley Daily Bulletin on _._December 17, 1990 NOTICE OF PUBLIC HEARING The City Planning Commission will conduct a public hearing on: A City initiated request to amend certain provisions of Title 22 of the Los Angeles County Code, as heretofore adopted by the City of Diamond Bar, per- taining to signs. APPLICANT: City of Diamond Bar ENVIRONMENTAL DETERMINATION: Categorical Exemption, Class 5 NOTE: If you challenge this development agreement in court, you may be li- mited to raising only those issues you or someone else raised at the public hearing described in this notice, or in written correspondence delivered to the Planning Commission at or prior to, the public hearing. If you are unable to attend the public hearing, but wish to send written com- ments, please write to the City Planning Department at the address given be- low, Attention: James DeStefano. You may also obtain additional information concerning this case by phoning the Planning Department at (714) 860-2314. Materials for this case are also available at: Diamond Bar County Library 1061 South Grand Avenue Diamond Bar, CA 91765 DATE OF HEARING: January 28, 1991 _ TIME OF HEARING: 7: LOCATION OF HEARING: Walnut Valley School District 880 S. Lemon Ave. Diamond Bar, CA 91789 CASE MATERIALS AND ENVIRONMENTAL STUDY: Are available for review during regular business hours at: City of Diamond Bar Planning Department 21660 East Copley Drive, Suite #190 Diamond Bar, CA 91765 Published in: San Gabriel Vallev Tribune on January 7, 1991 Inland Valley Daily Bulletin on January 7, 1991 F i l e. Nc . _ 90-0052 NOT1C>r OF PUBLIC HEARING The City Planning Oommission wi!! conduct a public hearing on: A subdivision to create 12 lots on 13.35 acres in the CM-BE-UC Commercial, Manufacturing Billboard Exclusion -Unilateral Contract) zone located at 21600 E'. Gateway Center Drive. ENVIRONMENTAL DETERMINATION: Mitigated Negative Declaration VICINITY MAP OF PROJECT: ifraperty, but wish to sendThiscasedoesnotaffectthezoninglgcohearisurroundingng. n j ng Department at you are unable to attend the P You written comments, Please write to the City Planning the address given below, Attention: Robert Searc this case by may i also e P obtain additionaltment at information concerning 31 95. Materials for phoning the Planningthiscasearealsoavailable at: Diamond Bar County Library 1061 South Grand Avenue Diamond Bar, CA 91768 DATE OF HEARING: Jul 23 1990 TIME OF HEARING; 7:5 0 P.M• walnut Valle Unified School District LOCATION OF HEARING. 880 South Lemon Street Wainut CA 91789 CASE MATERIALS AND ENVIRONMENTAL STUDY: Are available for review during Departmentbusinesshoursat: City of Diamond Bar Planning 21660 East Copley Drive Diamond Bar. CA 91765 Published in: on July 2 199Q San Gabrie6 Valiev Tribune Progress Bulletin - NOTICE OF PUBLIC HEARING The City Planning Commis sion will conduct a public hear- ing on: A request for a Development Agreement for Gateway Corl rate Center located South of the 57 (Orange) Freeway and off Goiden Springs Drive, The De- velopment Agreement will allow office and commercial develop meet within the Corporate Cen- ter. The Development Agree- ment well decrease development density and restrict land uses to office and commercial develop ment, All ordinances in effect at the time of the Development Agreement will serve as the development standard. APPLICANT: Zelman Development Company on behalf of Diamond Bar Busi- ness ASSociation ENVIRONMENTAL DETERMINATION: Catergorial Exemption NOTE: if You challenge this development agreement in court, you may be limited to raising only those issues you or someone else raised at the pub- lic hearing described in this notice, or by written corre- Spondence, delivered to the Planning Commission at, or prior to, the public hearing. If you are unable 10 attend the Public hearing, but wish to send written comments, please write to the City Planning Depart. menl at the address given be- low, Altenion: James DeStelano. You may also obtain additional information concern- ing this case by phoning the Planning Department at (714) 860-2314. Materials for this case are also available at: Diamond Bar County Library 1061 South Grand Avenue Diamond Bar, CA 91765 DATE OF HEARING: January 76, 1991 TIME OF HEARING: 7:00 P.M. LOCATION OF HEARING: Watnut Valley School District 830 South Leman Avenue Diamond Bar, CA 9111 CASE MATERIALS AND li RONMENTAL STUDY: Are available for review during reg- ular business hours at: City of Diamond Bar Planning Department 21660 East Copley Drive Suite x190 Diamond Bar, CA Y1765 Pub. SGVT: January 7, 1991 E. No. 7275 PROOF OF PUBLICATION 2015.5 C.C.P.) STATE OF CALIFORNIA, County of Los Angeles, I am a citizen of the United States and a resident of the County aforesaid; I am over the age of eighteen years, and not a party to or interested in the above - entitled matter, I am the principal clerk of the printer of the __.__San ............ a newspaper of general circulation, printed and published daily ---------------------------------------------------- in the City of --------- -------- •-------------•- --------- County of Los Angeles, and which newspaper has been adjudged a newspaper of general circulation by the Superior Court of the County of Los Angeles, State of California, under the date of ..... S.ept,.__--0.,..... 19.-57 Case Number ----------- ti ?-9-1 ----------------- that the notice, of which the annexed is a printed copy (set in type not smaller ti,an nonpareil), has been published in each regular and entire issue of said newspaper and not in any supplement thereof on the following dates, to -wit: AUG. 28 all in the year 19----- 9I I certify (or declare) under penalty of perjury that the foregoing is true and correct. Dated at -,1est Covina --------------------------------- California this 28THday of - --..AUnGUST--- -- ----- 19--- 97- R / r Signature unty Clerk's Filing Starnp I, Proof of Publication of NOTTCE..OE __ U LIC__HEAIiI1Y0--------------------•--------- TPM 22102 NOTICE OF PUBLIC HEARING NOTICE IS HEREBY GIVEN BY THE CITY OF DIAMOND BAR that the City Planning Commission will conduct public hearings on the following items: . 1. Tentative Parcel Map 22102, a request to subdivide two parcels, one .77 acres and one 3.62 acres, from an existing 4.39 acre lot in the Gateway Corporate Center at 1575 South Valley Vista Drive. There is an existing two story building located: on the site. The Gateway Corporate .Center is bounded by Golden Springs •Drive" and the Orange and Pomona Freeways. The zone is. CM-BE-UIC. Applicant;- Specialty :Equipment MarketAssociation Environmental Deteimmnation:':', Negative Declaration 2. Conditional Use Permit 91-8 - A request for a billiard Room establishment located in the Colima Plaza `at 20627 Colima' Road.The Commercial Center is operating under CUP 87-41I.The unit is vacant. The site is bounded by Lemon 'Avenue and the Pomona Freeway. The project is located in the C2-DP Zone. Applicants: Jung Ho and Yeon Ho Kim. Environmental Determination; .. Negative Declaration'; `_ 3. Conditional Use Permit No. 91-09, 'A request for the placement of a reverse vending machine for recycling at 1139 South Diamond Bar Blvd., Diamond Bar. The present site is occupied by Standard Brands Paint Company. The proposed project site is in a G3 zone. --: — flApplicant: Reynolds Metals Co. Environmental Determination; Negative Declaration' 4. A request tomerge two lots (Lots 20 and 21, Tract 39679) into one 6.89 acre parcel located at 21700 East Copley Drive, in a C-M-BE-UIC Zone. The 6,89 Acre Site .is 'currently developed with a new office building. - Applicant; Zelman Development Environmental Determination: Categorically Exempt Section 15305 Class 5 (c) . This case does not affect the zoning of the surrounding properties. If you are unable to attend the public hearing but wish to send written comments please write to the City Community Development Department at the address given below. You may also obtain ' additional information concerning this case by . phoning the Planning Department at (714) 396-5676 If you challenge this application and project ! in court, you may be limited to raising only those issues you or someone else raised at the public hearing described in this notice, or in written correspondence delivered to the Planning Commission at, or .prior to, the. public hearing, . DATE OF HEARING: . Monday, September 23, 1991 TIME OF HEARING: 7:00 P.M. LOCATION OF HEARING: Walnut Valley Unified School District Board Room . 880 S. Lemori Ave., Diamond Bar, CA 91765 CASE MATERIALS: Are available for review during regular office hours at the Community Development Department 21660 East Copley Drive, Suite 190 Diamond Bar, California 91765 Publish; August 28, 1991. E. No. 9637 1 Illi yl L z tI a4b jam Lill fir• — la ° I !I fi i ' fly. t' - I - i - Al 1 1 FA I Ito I - 4 r . it - y I . • - a .1 '! EI r I r 1 1. Il' Y ' J ~ M I t . w _- ' " • . it I w l a 1 _ 1 - 1F y , 1 - err . . I I _ r . - L _ Iry ts I i[ +•- ` I..- '- ' re lies 11 IL ILL.- _' i'•y f' 111 •# _ i i -' 'I I I f11i I`- ' pr, 7' PROOF OF PUBUCAT[ON This space is for the County Clerk's Filing Stamp 2015.5 C.C.P.) STATE OF CALIFORNIA, County of Los Angeles, I am a citizen of the United States and a resident of the County aforesaid; I am over the age of eighteen years, and not a party to or interested in the above - entitled matter. I am the principal clerk of the printer of the _..._San_ GaorielV YLj__1. ___Trib . a newspaper of general circulation, printed and published Cl3ly --------•------------- in the City of----------Kl Q_t- - oyLna----------- ---••------------- County of Los Angeles, and which newspaper has been adjudged a newspaper of general circulation by the Superior Court of the County of Los Angeles, State of California, under the date of ----- Sept.__1.0-...... 19._5_7-, Case Number....____...g4q---------- -------- -- that the notice, of which the annexed is a printed copy (set in type not smaller than nonpareil), has been published in each regular and entire issue of said newspaper and not in any supplement thereof on the following dates, to -wit: November 30, all in the year 19_--9 0 1 certify (or declare) under penalty of perjury that the foregoing is true and correct. Dated at vlest Covina California, this3ja th clay of ...... NOvb'•zCli?.e. 19._.Q. 7 - Signature Proof of Publication of NOTICE OF PUBLIC HEARING D----. ee.. -... ---------ment --- --- --- •--Gat--------e-•--.....y......._ eveopment•Agrwa Corporate Center — DIAMOND BAR CITY OF DIAMOND BAR ............................... NOTICE OF PUBLIC NEARING The City Planning Commis- sion will conduct a public hear- ing on: Arequestfor a Development Agreementfor Gateway Corpo- r,te Center. located South of the 57 (orange) freeway and off Golden Springs Drive, The De velopment Agreement will allow office and commercial develop- ment within the Corporate Cen- ter ' The DevelapUlen, Agree- _ menl will decrease dhvelopment density and restrict land uses to office and commercial deve1011- ment. All ordinances in effect at the time of adoption of the Development Agree meal will serve as the development Stan- dard. APPLICANT.- Zelman Develop - men, "ampany on behalf Of Diamond Bar Business Associa- tiara ENVIRONMENTAL DETERMINATION: Categorica} Exemption NOTE: If you challenge this develop- ment agreement in court, You may be limited to raising only those issues you or 5omenne else raised at The public hearing described in this notice, or in written correspondence deliv- ered To the Planning Commis Sion at, or prior to, the public hearing. If you are unabL to attend the public hearing, but wish to send written comments, please Write to the City Planning DeparT- menT at the address given be- low, AitenlWT James DeSte- fano. You may also obtain addi- tional information o c Pling am thiscasebyphoningpingDepartment at ;7141 860 2314. Materials are also availa- ble at: Diamond Bar County Library 1161 South Grand Avenue ' Diamond Bar, CA 91765 DATE OF HEARING: December 10, 1990 TIME OF HEARING: 7:00 P.M. LOCATION OF HEARING; Walnut Valley School District Sao South Lemon Avenue Walnut, CA 91789 CASE MATERIALS AND ENVI RONMENTAL STUDY: Are available for review during reg- ular office hours, at City of Diamani Bar Planning OeCl .' meal 71660 E. Copley Drive, .rite 190 Diamond Bar, CA 91765 Pub. SGVT: November 30, 1990 E. No. 7008 NOTICE OF PUBLIC HEARING The City Planning Commission will conduct a public hearing on: A request for a Development Agreement for Gateway Corporate Center located South of the 57 (Orange) Freeway and off Golden Springs Drive. The Develop- ment Agreement will allow office and commercial development within the Cor- porate Center. The Development Agreement will decrease development density and restrict land uses to office and commercial development. All ordinances in effect at the time of adoption of the Development Agreement will serve as the development standard. APPLICANT: Zelman Development Company on behalf of Diamond Bar Business Association ENVIRONMENTAL DETERMINATION: Categorical Exemption NOTE: If you challenge this development agreement in court, you may be li- mited to raising only those issues you or someone else raised at the public hearing described in this notice, or in written correspondence delivered to the Planning Commission at or prior to, the public hearing. If you are unable to attend the public hearing, but wish to send written com- ments, please write to the City Planning Department at the address given be- low, Attention: James DeStefano. You may also obtain additional information concerning this case by phoning the Planning Department at (714) 860-2314. Materials for this case are also available at: Diamond Bar County Library 1061 South Grand Avenue Diamond Bar, CA 91765 DATE OF HEARING: January 14, 1991 TIME OF HEARING: 7:00 p.m. LOCATION OF HEARING: Walnut Valley School District 880 S. Lemon Ave. Diamond Bar, CA 91789 CASE MATERIALS AND ENVIRONMENTAL STUDY: Are available for review during regular business hours at: City of Diamond Bar Planning Department 21660 East Copley Drive, Suite #190 Diamond Bar, CA 91765 Published in: San Gabriel Tribune on December 17, 1990 Inland Valley Daily Bulletin on December 17, 1990 T 21660 EAST COPLEY DRIVE • SUITE 100 DIAMOND BAR, CA 91765-4177 714-860-2489 • FAX 714-861-3117 T E L E C O P Y C O V E R S H E E T DATE: %ZZ-/5' O TIME: si,.1 TO: Name: Agency: Cam_ Telephone No.: FAX No.: FROM: Name: Division: y,Cr'-3J7 NUMBER OF PAGES: (Including Cover Sheet): COMMENTS •01 r' GARY H. WERNER JOHN A. FORGING PHYLLIS E. PAPEN PAUL V. HORCHER JAY C. KIM ROBERT L. VAN NORT Mayor Mayor Pro Tern Councilmember Councilmember Councilmember City Manager CITY OF DIAMOND BAR USES RECYCLED PAPER f' 21660 EAST COPLEY DRIVE SUITE' 100 DIAMOND BAR, CA 9I765-4177 714-860-2489 • FAX 714-861-3117 T E L E C 0 P Y C O V E R S H E E T DATE: /y Q TIME: TO: Name: Agency: Telephone FAX No.: FROM: Name: Division: NUMBER OF PAGES: (Including .fCover Sheet): COMMENTS: l GARY H. WERNER JOHN A. FORGING PHYLLIS E. PAPEN PAUL V. HORCHER JAY C. KIM ROBERT L. VAN NORT Mayor Mayor Pro Tem Councilmember Councilmember Councilmember City Manager CITY OF DIAMOND BAR USES RF.CYCLFD PAPER NOTICE OF PUBLIC HEARING The City Planning Commission will conduct a public hearing on: A request for a Development Agreement for Gateway Corporate Center located South of the 57 (Orange) Freeway and off Golden Springs Drive. The Develop- ment Agreement will allow office and commercial development within the Cor- porate Center. The Development Agreement will decrease development density and restrict land uses to office and commercial development. All ordinances in effect at the time of adoption of the Development Agreement will serve as the development standard. APPLICANT: Zelman Development Company on behalf of Diamond Bar Business Association ENVIRONMENTAL DETERMINATION: Categorical Exemption NOTE: If you challenge this development agreement in court, you may be li- mited to raising only those issues you or someone else raised at the public hearing described in this notice, or in written correspondence delivered to the Planning commission at or prior to, the public hearing. If you are unable to attend the public hearing, but wish to send written com- ments, please write to the City Planning Department at the address given be- low, Attention: James DeStefano. You may also obtain additional information concerning this case by phoning the Planning Department at (714) 860-2314. Materials for this case are also available at: Diamond Bar County Library 1061 South Grand Avenue Diamond Bar, CA 91765 DATE OF HEARING: January 28, 1991 TIME OF HEARING: 7:00 p.m. LOCATION OF HEARING: Walnut Valley School District 880 S. Lemon Ave. Diamond Bar, CA 91789 CASE MATERIALS AND ENVIRONMENTAL STUDY: Are available for review during regular business hours at: City of Diamond Bar Planning Department 21660 East Copley Drive, Suite #190 Diamond Bar, CA 91765 Published in: San Gabriel Valley Tribune on January 7, 1991 Inland Valley Daily Bulletin on January 7, 1991 ti _-- mod' _may ___- -- --_ _ _ _,. 1.w - PROOF OF PUBLICATION 2015. C.C.P.) STATE OF CALIFORNIA } ss. COUNTY OF LOS ANGELES ) CITY OF DIAMOND IWA NOTICE OF SPECIAL ST11DY SESSION GATEWAY CORPOPATE CENTER I am a citizen of the United States and a resident of the County aforesaid; 1 am over the age of eighteen years, and am not a party to or interested in the above entitled matter. I am the principal clerk of the printer of the Inland Valley Daily Bulletin, (formerly the Progress Bulletin), a newspaper of general cir- culation in the County of Los Angeles, and which newspaper has been adjudged a newspaper of general circulation by the Superior Court of the County of Los Angeles, State of California, under date of June 15, T945, Decree No. Pomo C-606; that the notice, of which the annexed is printed copy, has been published in each regular and entire issue of said newspaper and not in any supplement thereof on the following dates, to wit; Aug. 3 all in the year 19 90 certify (or declare) under penalty of perjury that the foregoing is true and correct. Signa r U' Date _ , 19 A uaiiy Bulletin LEGAL ADVERTISING SERVICE This space is for the County Clerk's filing stomp NOTICE OF SPECIAL STUDY SESSION THE DEPARTMENT OF CITY PLANNING The City of Diamond Bar will conduct a special study session to discuss the Gateway Corporate Center. DATE OF HEARING: Monday, August 13, 1990 TIME OF HEARING: 5:06 P.M. LOCATION OF HEARING: Walnut Valley Unified School District Board Room 880 S. Leman Ave. Diamond Bar, CA 91765 I.V.DAILY BULLETIN/POMONA DC 49340 Pub. August 3, 1990 714) 987-6397, ext. 494 300 S. Thomas St. P.O. Box 2708 Oomona, CA 91766 Pomona, CA 91769 PROOF OF PUBLICATION This space is for the County Clark's Filing Stamp 2015.5 C.C.P.) STATE OF CALIPORNIA, County of Los Angeles, I am a citizen of the United States and a resident of the County aforesaid; I am over the age of eighteen years, and not a party to or interested in the above - entitled matter. I am the principal clerk of the printer of the __.._S ??___Gaoriel-_y Ll.ey--aui y_---` rj-•bja_ a newspaper of general circulation, printed and published daily---- ----- in the City of ---------- vJz-5t--- Covina----------------------------------- County of Los Angeles, and which newspaper has been adjudged a newspaper of general circulation by the Superior Court of the County of Los Angeles, State of California, under the date of ...... 19._5.2., Case ldumber......... ... .91.................. that the notice, of which the annexed is a printed copy (set in type not smaller than nonpareil), has been published in each regular and entire issue of said newspaper and not in any supplement thereof on the following dates, to -wit: July 2, al{ in the year 19__9-D. I certify (or declare) under penalty of perjury that the foregoing is true and correct. Dated at ....... :lest, Covina 2nd California, this __..--_ day of _______________JULY 19 9 0 Signature Proof of Publication of NEGATIVE DECLARAT. QN Parcel Map No. 90-0041, 90-0052 CITY OF DIAMOND BAR NOTICE IS HEREBY GIVEN THAT THE DEPARTMENT OF PLANNING FOR THE CITY OF DIAMOND BAR HAS REC• OMMENDED NEGATIVE DEC- LARATIONS WITH CONDF TIONS FOR THE FOLLOWING PROJECTS: PARCEL MAP 90-0041 APPLICANT: Specialty Equiot meni Market AssociaYon PROPOSAL: A minor 5ubdiVi. sion to create 2 parcels on 4.39 acres fn the CM BE UC (Com- mercial Manufacturing Bill: board Exclusion Unilateral Con- tract) zone. LOCATION: 1575 S. VWley Wsta, PARCEL MAP 90-0052 APPICANT: Zelman Develop- ment Company PROPOSAL: A subdivision to create 12 lots on 1335 acres in the CM-BE-UC (Comme-rcial Manufacturing -Billboard Exclu- sion -Unilateral Contracll zone. Pub. SGVT: July 2, 1990 E. No. 5626 PROOF OF PUBLICATION This space is for the County Clerk's Filing Stamp 20I5.5 C.C.P.) STATE OF CALIFORNIA, County of Los Angeles, I am a citizen of the United States and a resident of the County aforesaid-, I am over the age of eighteen years, and not a party to or interested in the above - entitled matter. I am the principal clerk of the printer of the a newspaper of general circulation, printed and published dal ly-------------------------------------------- ........ inthe City of --------- ----------------------------------- County of Los Angeles, and which newspaper has been adjudged a newspaper of general circulation by the Superior Court of the County of Los Angeles, State of California, under the date of _.-.-Se}t.__10.,-.-., 19..57-, Case !Number....... _ .................: that the notice, of which the annexed is a printed copy (set in type not smaller than nonpareil), has been published in each regular and entire issue of said newspaper and not in any supplement thereof on the following dates, to -wit: July 2, all in the year 19.-90.. I certify (or declare) under penalty of perjury that the foregoing is true and correct. Dated at iqest Covina nd 90 California, this ...____ day of ----------______7U.'........... 19----- ignature Proof of Publication of NEGATI Map No. 90-00411 CITY OF DIAMOND BAR NOTICE IS HEREBY GIVEN THAT THE DEPARTMENT OF PLANNING FOR THE CITY OF DIAMOND BAR HAS REC- OMMENDED NEGATIVE DEC- LARATIONS WITH CONOi- TIONS FOR THE F0440WING PROJECTS: PARCEL MAP 90-0041 APPLICANT: Specialty i ment Markel Association PROPOSAL: A minor subdivi- sion to create 2 parcels on 4.39 acres In the CM-BE-UC (Com- mercial Manufacturing. BiIt- board ExclusionUnilateralCon- Iracl) zone. LOCATION: 1575 S. Valley Vista PARCEL MAP 90-0052 APPICANT: Zelman Develop- ment Company PROPOSAL: A subdivision to create 12 lots on 13, 35 acres in In CM -BE -VC (Commercial Manufacluring- Billboard Exclu. lion- Unilatera! Contract) zone. Pub. SGVT: July 2, 1990- E. No. 5626' 90- 0052 This space is for the County Clerk's fllitng stamp PROOF OF PUBLICATION 2015,C.C.P. ) STATE OF CALIFORNIA ss. COUNTY OF LOS ANGELES CITY OF DIAMOND BAR NEGATIVE DECLARATIONS WITH CONDITIO 58R06HT ;F$LLOW1NCA PR96E86g2 Parcel arce ap I am acitizen of the United States and a resident of the County aforesaid; I am over the age of eighteen years, and am not a party to or interested in the above entitled matter. I am the principal clerk of the printerof the Progress Bulletin, a news- paper of general circulation, printed and published daily in the City of Pomona, County of Los Angeles, and which news- paper has been adjudged a newspaper of general circulation by the Superior Court of the County of Los Angeles, State of California, underdateofJune 15, 1945, Decree No. PomoC- 606; that the notice, of which the annexed is a printed copy, has been published in each regular and entire issue of said newspaper and not in any supplement thereof on the follow- ing dates, to wit: July 2 all in the year 1990 I certify (or declare) under penalty of perjury that the foregoing is true and correct. s Sign#re G , Date S 19_ Y i L L E Y Dalyr' f FWI' Progre4sq' 5 Bt l l le t i n LEGAL ADVERTISING SERVZE 14 L .. NOTICE IS HEREBY GIVEN THATTHEDEPARTMENTOFPLANNINGFORTHECITYOFDIAMONDBARHASRECOMMENDEDNEGATIVEDECLARATIONSWITH CONDITIONS MAP 4 FOR THE FOLLOWING PROJECTS: APPLICANT; SpeclaltyEquipment Market Association PROPOSAL: A minor subdivision to create 2 parcels on4.39 aces In the CM- BE-UC (Commercial Manufactur• Ing-BlllboardExclusion- Unliateral Contract) zone. LOCATION: 1575 S. Valley Vista PARCEL MAP 90-0052 APPLICANT; Zelman Development Company PROPOSAL: 935barcreate I ots On 1ces In the CM-UCtCOm mercial Manufacturing lb Exclusion Unilateral Contract)zone. I.V.DAILY BULLETIN/ POMONA D p C 22853 / 390= Pub..iul— - — 300 S. Thomas SI, P O Box 2708 Pomona, CA 91766 Pomona, CA 91769 714 - 622 - 1201, ext 243 This space Is for the County Clark's filling stamp PROOF OF PUBLICATION 2015, C. C. P. ) STATE OF CALIFORNIA COUNTY OF LOS ANGELES 1 CITY OF DIAMOYD BAR NEGATIVE DECLARATIONS WITH CONDITI 38R0RT; F$LLOW1N PR JE Wg2 Parcel arc,. a I am acitizen of the United States anaa resident of the County aforesaid; I am over the age of eighteen years, and am not a party to or interested in the above entitled matter. I am the principal clerk of the printer of the Progress Bulletin, a news- paper of general circulation, printed and published daily in the City of Pomona, County of Los Angeles, and which news- paper has been adjudged a newspaperof general circulation by the Superior Court of the County of Los Angeles, State of California, under date of June 15, 1945, Decree No. Pomo C- 606; that the notice, of which the annexed is a printed copy, has been published in each regular and entire issue of said newspaper and not in any supplement thereof on the follow- ing dates, to wit: July 2 all in the year 1970 . I certify (or declare) under penalty of perjury that the foregoing Is true and correct. Signature Date 19 ryLhrrn V AAA L L E y 1 Progress5 Bull%I LEGAL ADVERTISING SERVICE 300 S. Thomas St. P. O Box 270E u NOTICE 15 HEREBY GIVri4T14ATTHEEPARWENTOF: FOR THE D TY of U AMONO BAR HASNEGATIVEDECLARATIONSREtOMMENDEO 11THcMA ITIoN 1FOR THE FO OWMarket TS. SpecialtyEquipment APPLICANT: Association to PROPOSAL: parcels te 2 ronU439laces sionin theaCM- B g-gUlboa d ManUfaclUT Exclusllo Unilateral Contract] zone. LOCATION: 1575 S. V alley Vista PARCEL MAP 90-0052 Zelman DevelOpment company APPLICANT: A subdivision to create 12 lots an PROPOSAL,. 13.3S acres in the CM-B-UC (Com- Excluslon anUlateraI contract) zone. I. VrDALLY BULLET IN/POMONA II 9. l53 DC am Pub Pomona, CA 91766 Pomona, CA 91169 714 - 622 - 1201, ext. 243 c,ti. ... PROOF OF PUBLICATION This space is for the County Clerk's Filling Stamp 12015.5 C.C.P.) STATE OF CALIFORNIA, County of Los Angeles, I am a citizen of the United States and a resident of the County aforesaid; I am over the age of eighteen years, and not a party to or interested in the above - entitled matter. I am the principal clerk of the printer of the a newspaper of general circulation, printed and published daily ----•--------------- in the City of -------- ._4tlast--- G0-yina----------------------•------------ County of Los Angeles, and which newspaper has been adjudged a newspaper of general circulation by the Superior Court of the County of Los Angeles, State of California, under the date of ----- S.ept._.10-...... 19_ 51. Case Number.._.____--U? . _91.................... that the notice, of which the annexed is a printed copy (set in type not smaller than nonpareil), has been published in each regular and entire issue of said newspaper and not in any supplement thereof on the following dates, to -wit: August 3, 90 all in the year 19......... I certify (or declare) under penalty of perjury that the foregoing is true and correct. Dated at ........... Covina C 'fornia, this ._3r day of ---- August---------- 19--- 0_-- Signature Proof of Publication of NOTICE OF SPECIAL STUDY SESSION CITY OF DIAMOND BAR NOT[CE OF SPECIAL STUDY SESSION THE DEPARTMENT OF CITY PLANNING The City of Diamond Bar will conduct a special study ses lion 10 discuss the Gateway Corporate Center. DATE OF HEARING: Mom day, August 13, 1990 TIME OF HEARING: 5XI3 P.M. LOCATION OF HEARING: Walnut Valley Unified School District, Board Room, B00 S, Lemon Avenue, Diamond Bar, CA 91165. GVT: August 3, 19190, EPuV17. FINAL ENVIRONMENTAL IMPACT REPORT TENTATIVE TRACT NO. 39579 ZONE CHANGE NO. 80-59 DIAMOND BAR AREA 5CH AJo. iraIZ-12-19 COUNTY OF LOS ANGELES DEPARTMENT OF REGIONAL PLANNING 320 WEST TEMPLE STREET LOS ANGELES, CALIFORNIA 90012 October 12, 1983 GC ADDENDUM TO THE DRAFT ENVIRONMENTAL IMPACT REPORT TENTATIVE TRACT NO. 39679 ZONE CHANGE NO. 80-59 The Final Environmental Impact Report (FEIR) for the above project consists of the following documents: 1) the Preliminary EIR.prepared by the applicant updated); 2) the draft EIR prepared by staff (dated May 5, 1982); 3) this Addendum (dated October 12, 1983). It is important to note that the intent of an EIR is to serve as an informational document and to show good faith effort by providing a full disclosure of the physical impacts a proposed project may have. An EIR is not a technical document nor does the evaluation of impacts need to be exhaustive. Disagreement among experts does not make an EIR inadequate. The environmental documentation process emphasizes the discussion of significant environmental impacts, mitigation mea- sures and alternatives. As a part of the public review process, the Draft EIR was available for public input for thirty (30) days prior to the public hearing held on June 10, 1982. No testimony was received concerning the significant impacts of the proposed project, or the adequacy of the Draft EIR. However the Regional Planning Commission expressed concern about the visual prominence of the proposed project -- a commercial/industrial park on a slope above the Orange Freeway. The applicant was requested to develop and submit a list of permitted uses and design standards. The applicant's sumittal consists of CC&R's which would run with the property. The proposed standards include the following measures which exceed required standards: Landscaping: 15% gross area of retail -commercial. Setbacks: 15 feet front, 10 feet rear, 30 feet combined sideyards. Height limits: 45 feet for lots 11-23 65 feet for lots 24-38 (All heights to be reviewed by existing architectural committee* for Diamond Bar). Lighting: No standrad taller than 20 feet; approval by the committee. Roof Treatment: Screening or other treatment to the satisfaction of the committee. Signs: No billboards. All signs to satisfaction of committee. The committee referred to is the existing Architechtural Review Committee for Diamond Bar. 2 - The proposed list of allowed uses, submitted by the applicant, includes all permitted uses of the C-M zone, including R.V. and truck rentals, and auto sales. The proposed project will unavoidably change the use and appearance of the 233 acre site, producing scenic and topographical changes. Approximately 60-percent of the property will be graded and devel- oped with buildings, parking lots, accessways and landscaping. The lower part of the site has already been altered by manufactured slopes along the 57/60 freeway, ranging in height from 100 to 140 feet. The proposed project will require filling of the three canyons which afford brief views up on the property from the 57/60 freeway. Northbound motorists will review primarily the manufactured slopes until they pass under.the transition ramp to the eastbound 60 freeway, after which the site will be only sporadically visible. Southbound motorists will be able to see the development above the manufactured slopes. From more distant vantages the developed areas themselves will be visible. If implemented, the proposed design standards, in combination with a revised landscape plan (to be submitted) will help to soften the appearance of the manufactured slopes - including the existing freeway slopes - and the development itself. FINAL ENVIRONMENTAL IMPACT REPORT TENTATIVE TRACT NO. 39679 ZONE CHANGE CASE NO. 80-59 DIAMOND BAR AREA COUNTY OF LOS ANGELES DEPARTMENT OF REGIONAL PLANNING 320 WEST TEMPLE STREET LOS ANGELES, CALIFORNIA 90012 December 13, 1982 JT ADDENDUM TO THE DRAFT ENVIRONMENTAL IMPACT REPORT TENTATIVE TRACT NO. 39679/ZONE CHANGE NO. 80-59 The Final Environmental Impact Report(FEIR) for the above project consists of the following documents: 1) the Preliminary FIR prepared by the applicant updated); 2) the Draft EIR prepared by staff (dated May 5, 1982); 3) this Addendum (dated December 13, 1982). It is important to note that the intent of an EIR is to serve as an informational document and to show good faith effort by providing a full disclosure of the physical impacts a proposed project may have. An EIR is not a technical document nor does the evaluation of impacts need to be exhaustive. Disagreement among experts does not make an EIR inadequate. The environmental documentation process emphasizes the discussion of significant environmental impacts, mitigation mea- sures and alternatives. As part of the public review process, the Draft EIR was available for public input for thirty (30) days prior to the public hearing held on June 10, 1982. No testimony was received concerning the significant impacts of the proposed project, or the adequacy of the Draft EIR. However the Regional Planning Commission expressed concern about the visual prominence of the proposed project -- a commercial/industrial park on a slope above the Orange Freeway. The applicant was requested to develop and submit a list of permitted uses and design standards. The applicant's submittal consists of CC&R's which would run with the property. The proposed standards include the following measures which exceed required standards: Landscaping: 15% gross area of retail -commercial. Setbacks: 15 feet front, 10 feet rear, 30 feet combined sideyards. Height limits: 45 feet for lots 11-23 65 feet for lots 24-38 (All heights to be reviewed by existing architectural committee* for Diamond Bar). Lighting: No standard taller than 20 feet; approval by the committee. Roof Treatment: Screening or other treatment to the satisfaction of the committee. Signs: No billboards. All signs to satisfaction of committee. The committee referred to is the existing Architectural Review Committee for Diamond Bar. 2 - The proposed list of allowed uses, submitted by the applicant, includes all permitted uses of the C-M zone, including R.V. and and truck rentals, and auto sales. The proposed project will significantly alter the 233 acre site. Approximately 60-percent of the property will be graded and devel- oped with buildings, parking lots, accessways and landscaping. The lower part of the site has already being altered by manufactured slopes along the 57-60 freeway, ranging in height from 100 to 140 feet. The proposed project will require filling of the three canyons which afford brief views up on the property from the 57-60 freeway. Northbound motorists will view primarily the manufactured slopes until they pass under the transition ramp to the eastbound 60 freeway, after which the site will be only sporadically visible. Southbound motorists will be able to see the development above the manufactured slopes. From more distant vantages the developed areas themselves will be prominent. The proposed design standards, in combination with the proposed landscape plan (previously submitted), if implemented, will help to soften the appearance of the manufactured slopes - in- cluding the existing freeway slopes - and the development itself. To implement the proposed mitigation of visual impacts, a Development Program could be attached to the Zone Change, requiring the applicant to file a Conditional Use Permit. This would assure further control over the visual character of the development. DRAFT ENVIRONMENTAL IMPACT REPORT TENTATIVE TRACT NO. 39679 ZONE CHANGE NO. 80-059 DIAMOND BAR AREA County of Los Angeles Department of Regional Planning 320 West Temple Street Los Angeles, California 90012 May 5, 1982 tr. SUMMARY The proposed project consists of the development of lots and streets to accommodate a mix of office --professional, light industrial, restaurant and retail uses. The project site is a 233-acre property located along the sp) tanasthside of the High - intersection of the Pomona (Highway way 57 ) freeways. As a result of the Initial Study completed on the proposed project, six (6) environmental factors were identified which may be significantly impacted if the proposed project is imple- mented. In completing the Initial Study, consideration was given to the design of project, environmental data available in the planning office, environmental data submitted by the applicant, and comments received during the Initial Study consultation period. Copies of the Preliminary EIR were transmitted to ten (10) government agencies and special organizations, listed in Section I.F. for review and comment. A summary discussion of the environmental analysis for these factors follows: 1. Geotechnical Hazards Impacts Cut slopes up to 110 feet ineregis aand potentialffoptor mass4movement feet in depth will be created. Th from destabilized bedding planes, and exposed faulted or folded materials. Surface materials may be subject to settling. Miti ation Measures Unstable bedrock, exposed by cut slopes,. can be stablized by constructing fill buttresses or stabilization fills, according to edatest daUnconsolidated fill materials i removend replaced by competentmaterialtobecompacted n place. Conclusion The site is feasible from a geologic aspect. i 2. Biotic Resources impacts Project grading will require the removal of 186 mature live oaks approximately 68 percent of total), and also removal of about one-third of the on -site Many -stemmed Liveforever plants (Dudle a multicaulis), a sensitive species as listed by the California Native Plant Society. A freshwater spring will be covered over by fill. Approximately 54 percent of the natural habitat and vegetative cover will be removed. Mitigation Measures Most of the remaining vegetation will be retain in permanent open space. The proposed landscape plan indicates that 1200 trees will be planted, including 240 oaks. Conclusion Wherever grading occurs, the native habitat will be irreversibly altered. 3. Air Quality Impacts During project grading, roughly 5900 pounds of dust will be generated per day. At full occupation, approximately 5600 pounds of emissions per day will be generated from both vehicle and energy use. Mitigation Measures The major measures for reducing air pollution for arearyehiclesources, iandon standards, best available technology implementation of the Air Quality Management Plan. Conclusion The project will incrementally contribute to the degradation of air quality in the area and in the air basin. ii 4. Archaeolo ical/Paleontola ical/Historical Resources Imaacts No archaeological ors urb°orcdEstroyresources fossilwereresourcesred on -site. Development could di mitigation Measures A qualified paleontologist will make a minimum of one inspection per day during grading operations. If any fossils are found, work shall cease until the paleontologist canmake recommendations, and mitigation of significant impacts is carried out. Conclusions Implementation of the above mitigations will reduce potential impacts to insignificant levels. 5. Scenic Qualities Imp The project will alter about 143 acres of the 233-acre site from haractertooneofurbancommercial -light itscurrentopenspacecslopesindustrialdevelopment. dernatedsand cu scenichighway. will be highly visible from Route 57, sig mitigation Measures Approximately 90acres willwill be setretainedthendominantpermanentridgeline.open space. Development Conclusion Grading and project construction will irreversibly alter approxi- mately 60 percent of the project site. 6. Traffic/Access Impacts The proposed project will generate approximately 13,800 trips per day. Other Pending projects in the area will generate an -estimated 62,000 daily trips. The cumulative traffic wimost affect s several intersections along Grand Avenue ( the subject project will iii l y" Grano,. 11M Nimmi" T'-'(,fj kj1,IQV Appiurs Drive wo tho pruipot will iO I W 11 is COVIN Lu L. Iii-ij p"c vus w! i I he reated on GuIdEq Olt ; ngq Muc A njr,i entrance Nays Signnln ~gill be pnovj6ed vt O"ra UP runjont ik GO ulorcpnr rowojmv ujj qtl[ Lo inproved udh pao mcnn -Wylm njvn s , W Ive ad 7. wt W n top OMAPACI! The project 011 cuntrioute Lo Mune congvmLed inUrrs"tlml OUnAILLOnS in rah p general nuea. MitigaGion munsuren di.c"Ssel above-' will alleviate potenUally GignAlmant I&L-tuan convsiot- aL PQ projeck enkunce-ways. 0 1V TABLE OF CONTENTS PAGE SECTION SUMMARY.................................................. i v TABLE OF CONTENTS........•............. I. PROJECT DESCRIPTION ...••... ....... 1 II. ENVIRONMENTAL SETTING ..............• .. .. III. ENVIRONMENTAL IMPACT STATEMENT ................•"•' 3 A. The Significant Environmental Effects 3 of the Proposed Project ....................... 4 1. Geotechnical Hazards ..•• ................... 2. Biotic Resources 3. Air Quality ............................ 4. Archaeological/Paleontological/ 10 Historical Resources .................... 11 5. Scenic Qualities ........•..•..... 12 6. Traffic/Access .............•.............., B. Any SignefAvoidednifrtheeProposaleiss Which Cannot 16 Implemented .................................... C. Mitigation Measures Proposed to Minimize 16 the Significant Effects .............•........ D. Alternatives to the Proposed Action ............ E. The Growth -Inducing Impact of the Proposed 17 Action ...................................... IV. ORGANIZATIONS AND PERSONS CONSULTED ...............' 17 18 LIST OF ATTACHMENTS . v It : I , 1 4. physical Lnvironmental setting, environmental impacts, and mitigation measures are also discussed in Sections II and III. D. Zonin , ro erty is zoned C-2, C-3, R-1-8000, R-10,000, The subject P P licant is applying for a zone changeandA-1-10,000. The aPP C-M. to designate the entire property E. GeneralPlan General Plan designates the property TheLosAngelesCountyfor Commercial and non -urban rr ieCttislinecompliance with e it appears that the proposed p j the General Plan, a final determination has not been made. F. Review Process The Preliminary EIR was sent to the following organizations: CO NTYTY Road Department DepartmentofEngineer -Facilities Museum of Natural History REGIONAL Southern California Association District South Coast Air Quality STATE 1 State Clearinghouse Water Resources Board) Air Resources Board) Department of Transportation) Department of Fish dBoard) WaterQualityControl2 It is the Department of Regional Planning staff's opinion that the Draft EIR, when combined with the Preliminary EIR, provides adequate information on the significant environmental issues. SECTION II - ENVIRONMENTAL SETTING As previously mentioned, the 233-acre site is comprised of the northwest slope of a long northeast to southwest trending ridge. The slope face is cut by a series of downslope ridges, gullies, and alluvial fans. The elevation of the property ranges from 1050 feet at the ridgetope to 600 feet at the base of the slope. Natural vegetation consists of areas of disturbed grassland,. coastal sage scrub, tall shrubs (including chaparral types) and walnut/oak woodland. There are several sandstone rock outcropping in the western portion of the site and a small fresh water spring near the wetern site boundary adjacent to Golden Springs Drive. Dudleya multicaulis, the many stemmed live forever, is found only within the rock outcroppings. This species is identified by the California Native Plant Society as a sensitive species. The project site could be most affected by seismic movement along the Whittier -Elsinore fault which lies approximately 4 miles from the property. The project site is bounded by residential and commercial development on the south and east; on the north and west, it lies adjacent to a vacant parcel zoned C-2, the Orange Freeway, and Golden Springs Drive. SECTION III - ENVIRONMENTAL IMPACT STATEMENT The staff of the Department of Regional Planning Initial Study (Attachment No. 1) of the proposed identify the environmental factors which may be completed an project to significantly 3 r.. PROJECT LOCATION MAP OMONA dv 1 0 1i fir"`..• + r Z1 I ` • r / • i 16* U lip fly" '- .,•t1 r: „ '., t Dig nd Bar s,r y lye ~ r• ti f A i —C'•. is ••' `'`rY.• _ . i.d F...,•.¢,t 4— ''` ar4 ^ -.,. sue+— .r j 1 `'"°%' t ,yf'. • .fy' ri . ^: ALI 77, 1 •tom ,,,` i'+` i `+ t 1 + + " f qL 4 so+ scour Jl •bfi' ieWwnp+ ICALI s' • ti t • 1 1 3 aaOrr'N! i SECTION I - PROJECT DESCRIPTION A.. Location The project site is located adjacent to andisouthetheastof the Pomona and Orange freeway interchange, the property Bar unincorporated area. More specifically, fronts on Golden Spring Drive AvenueroughlyandlGoldenmilesSpringswDrive. est of the intersection of Grand B . Statement of Objectives To provide a variety of building sites for commercial development. Approximately 1/2 of the project will be developed for office -professional use. The rest of the project will re ail uses.mix f Necessagrytroadwaysiand utilities service, and ret will be constructed. C. General Description of Technical Environmental and Economic Characteristics The applicant proposes to develop 81 commercial/light Trading dustrial lotson143acresofthe233acreproperty. will involvethemovementof3,000,000 cubic yards of material in a balanced iuhawilfill l be cpreatedoand canyonspwilles pbeofilled 110 feet in he gt to a depth of up to 75-feet. The proposed development will alter much of the northwest slope of alongnortheast -to -southwest trending ridge. idge.severalalluvial Thisslope is out by downslope ridges and gullies fans lie atthebaseoftheslopeadjacenttotheOrangeFreeway and Golden Springs Drive. A mix of grassland, coastal sage scrub, tall shrub, and walnut/oak woodland vcgetatcursionthe types cover the project site. One small spring western portion of the pperty. A included withinrtheeproposedl lot Tentative Tract 39680) is development. This property will be the subject of a separate environmental assessment, and tract application. Descriptions of the various aspects of the proposed project's 7111 ti implemented. In this process, impacted should the project be imp environmental data the staff considered the prOc comments during the Initial submitted by the applicant, Studyconsultation period, and the available environmental data. The environmental factors thee,identified for discussion in an Environmental Impact Repo rt Geotechnical iiazarub Biota Air Quality Archaeology/Paleontology Scenic Qualities Traffic/Access Gopies of the Preliminary EIR were transmitted to agencies and for reiew nt or anizations identified in SectiAs a. result ofvthisareViend eantgcwithintheirareaofexpertise. P li rocess, additional information was of this eme DraftEIRandpIts and is included in various attachments. Geotechnical Hazards The site is characterized by a series of narrow ridges Settin e lines and canyonsthathavebeencuttheensmallertridgeslope o eafrom major northeasttosoutofwroughlyg51andtheirslopesranghavean average slope 4:1 up to 1 112:1• The crest of the major ridgeline has been largely leveled during sout eastsideheoment of the residential area on hhave been ocut tfor Bevel p s Drive along project site. The ends °e the yoand Golden Spring These construction of the Orange project site. the north and northwesi5°feetrinsheights andvaryin slope from cuts range from 5o to 15 to 50 percent- d as the The bedrock material is identifiesiltstonePand tsandstone on. It consists of well -consolidated Weak, tending to easily Th.e siltstone units arerelativelyweak, units are fine to oTcoarsepart along bedding planes. cemented, jointed and fractured. hegrained and variably exposed in cliffs and out - well -cemented sections tend tobecroppings. 4 V! I are covered by residual ro erty bedrock. These The higher elevationsosition of the Po the underlying porous, 2 to 5 feet and are generally P soils of similar comprangeindepthfrom3 1/ loose and poorly consolidated- the sloping areas between e wash deposits are found ceresl PeS• These materials are slop are generally the canyon floors and tiheebedrack and similar in comp and porous. These are also canyon floors. p_feet deep. Dose and porous, and may be as much asAlluviummaterialsunderlie the The generally Property- on the subject broken surface generally been caused by soil and bedrockNumerouslandslides are found Thick mantles of solidated• landslides ically poorly con or bedding Plane failures. re tyP the landslides a canyon which projectsunderlyingartofthewith lower P its intersection Springs are locate gsnDrive, just east of toward GoldentheOrangethe Whittier -Elsinore nificant fault m ro erty• 4 miles from the subjeCmo ion at theThenearestknown o g to cause strongfaultwhichliesrsmostlikely the faults m lewood Fault, San Fernando Fault and However, the Newport-Ing site are cutting San Jacinto Fault- fill over theroadwayswillbecreatedby Building areas and es and placing Im acts the ridgons. The maximum fill will into upper portions of carry will beandthemaximumcutlowerportionsandintervedneepg es created will berticalto approximately 74 feet hest cut slop ,eazontal/1 feet. The hig from 1 1/2 h Driveapproximately99withgradesvaryingtoGoldenSpringsThe about 110 feet, slope that descends gradient. to 2/1• The existing to create a ht with a cut slope will be about 90 feet in heigwillbecutandfilledover reconstructed e lanes gradient of 2/1' sliding along bedding Pdown -dip or where proposed cuts There is a potential for slopes, out of proposed cut where proposed cuts espsceptible which dip Also, these will be e,pose landslide debris• osits, which are faulted or folded materials, ect to settlingintenselyandslumping• The surficiae subj to erosionand well consolidated, may typically of them - from loads placed on top cause flooding or orms could surface off during heavy will obstruct existing Water run- rainst building Pads which mudflow onto flows. 5 Development will be subject to strong ground shaking from maximum expected earthquakes. Liquefaction and landsliding is not anticipated. The Department of County Engineer -Facilities is concerned about the proposed exportation 0isnowpartofthesubject of Ocubic yards fonto tractthe contiguous tract (39680) which tract 39679. Mitigation Measures - Where down -dipping bedrock is exposed by cut slopes, geologic data indicates these can be stabilized by reconstructing them as compacted fill buttresses. Exposed faulted and folded °ck can be stabilizationbilized fillsa bSubdrainstwigltbese and replacing them widthplacedin these fills. materials removed to depths determined by a qualified soils engineer,and replaced bycompetentmaterial to be compacted in place. Surface drainage from above proposed lots will be channeled into storm drains which will connect into iexisting culverts under l the 57 Freeway and GSprings The DepartmentofCountyEngineer -Facilities will require that the possibility of exporting 300,000 cubicyardsoffilltotheresidential1o(previously balanced9cuo)abd filleliminated. operationhon the applicant willconduct rest of the site. Refer to the Preliminary EIR, pp. 7-10, 32, 33 and Appendix A; County Engineer letters, August 25, 1981, and January 29, 19g2•) Biotic Resources Settin - Six plant communities were found represented on the proposed site. They are: Acres Typical Species Communit Field Mustard, Ripgut Grass Disturbed Grassland - Sage brush, Sages, Buckwheat Coastal Sage Scrub - Toyon, Sugarbush, Scrub Oak, Tall Shrubs Black Walnut Coast Live Oak, Black Walnut Oak/Walnut Woodland Live Forever, Wishbone Bush Rock Outcropping - Dodder, Wire Grass, Willow Fresh Water Spring Dock I. Disturbed Grassland and Coastal Sage Scrub communities, The human activity, are the habitat and are utilized by many other specieswhicharethemostalteredby The Tall Shrub communityofseveralsmallrodents, and birds. such as Brush Rabbits, of reptiles, rodents, provides food and cover foring smallhabitmaforlseveral bird species. rodents, as well a pro cover for larger mammals and The Oak -Walnut oolacespror rodents. The edges of the woodland important food hest number of bird species habitat were found to have vegetattion provides nesting and on - site • The diversity species. The Pacific Treefrog was foraging area for many p and other amphibians, observed near the freshwater spring, andlargermammalswouldbe expected to inhabit the reptiles, vicinity of the spring. moval The proposed development ill create leveltail the building Impacts of significant amounts of vegetationare estimates of the amount pads and roadways. The follopnbe removed: of each vegetation community Existing Percent TO Acres To Acrea e Be Removed _a 91 74 24 21 Disturbed Grassland 30 20 46 Coastal Sage Scrub 52 ll 7e 15 Tall Shrub Oak -Walnut Woodland 56 neg. neg. neg. 0 Rock Outcropping 2 100 Freshwater Spring 233 dremoved; this As note, the freshwater spring will be totally and other am - will result in the losthou thoughttoon site whgcsuchareasdependent mule phibians and reptilest g Larger mammals suc and the upon this type of water eliminated loss of the spring deer shallalso btatliminated by reduction rassland will effectivelyKangaroo The substantial removal of disturbed g dent populations - Rat most of the California Meadow Mouse and Pacific Kang Rat populations as well as reduce other reduced, and the The Oak - Walnut Oakland will be significantly 7 4 largest and most healthy trees will be removed (approximately 186 of the mature oak trees; 32 percent, or 87 mature oaks will remain). Bird populations will be substantially reduced by the loss of oak woodland. The endangered species Dudle a multicaulis population will bereducedfromapproximatelybUto4uindividuals. Miti ation Measures - The applicant proposes to plant approximatelytreescompensatepartiallytothelossofmostoftheexisting mature oaks. A landscape plan has been submitted indicating the approximate location and species of each proposed tree• the trees applicant will be required to put this plan into effect; will be planted in a more "natural", random pattern than that duced shown on the landscaping map. As landscaping matures, the re populations of birds, smalaaoa speciesreptiles will beare palteaected ed. to increase, although the composition Guzzlers will be constructed in canyons upstream from the building pads toprovidepermanentwaterforAmajor mitigation will be the placement of approximately 90 acres of the site into permanent open space. For reference, see Preliminary EIR, pages 13-25, and Appendix C.} Air Quality Set_.___ - The project iSCAQMD)ePomonahWalnuthValley sectoraofty Management District' s ( j pr heprojecttheair basin. The closest air monitoring station to tert site is located in Pomona, about 5 miles east of the prop The following table summariex ed inmber l979oatdthe PomonaState aStationralAir Quality Standards were ec eral Number of Days Stateed Number of Days Standards Were Exceeded pollutant Standards Were Exceed 167 Days 126 Days Ozone C Days 2 Days Carbon Monoxide 0 Days 0 Days Sulfur Dioxide 6 Days N/S Nitrogen Dioxide Total Suspended N/M N/M Particulates NM - Not Measured NS - No Standard 01 Y s of Stage One Ozone episodes (hourly average The number of day 20 percent between 1978 and 1972 to 0.20 ppm) declined by e Two Ozone episodes (hourly 57 days. The number of Stag 66 percent to 3 days. average 0.35 PPm) declined by ect site is currently vacant and so does not generateTheprofdevelopmentsarethe any significant emissians. Residential develop project si riificant pollutant receptors inurcesthe v( those ywhichof hemit over g pollutant) site. There are no major Poi or 27 tons/year of any P 15 lbs./hour, or 150 lbs./daYHowever, the adjacent Orange and located in close Proxiitymajor line sources. Pomona Freeways rep ect willtake lm pacts - Air quality impacts of the proposed prof the form of short-term dust and onhiteememissions emissions eand with project construction, and 1 g emissions resulting from energy use. es will In the short-term, grading and is projected that tion vaniaverage of result in dust generation. It is day may be generated during approximately 5900 lbs. of dust p Short-term mobile emissions grading and construction activities• ui mn workers. ent used on -site and will be generated by heavy motorized eq P by commuting vehicles driven by constructio generatedby vehicles Long- term emissions will site, primarily bicity production (off -site), driven to and from the site, It is possible that certain and by natural gas use (on -site). ol permitted land uslution effects -- for es may have minor air p tablishment wouldbea permitted use - example, a dry cleaning es generate It is estimated that the completed P°jdayect , for a total of approximately 13, 740 vehicle trier day. This will result in 113,860 vehicle miles traveled p the generation of nearly 5000 pounds of vehicle emissions per g a roximately 690 pounds of emissions will The day. In addition, pp eneration and natural gas use. be generated by electricity g vehicular following table provides a summary of project -related and stationary emissions. POST PROJECT EMpnIONSa Electrical Gas S urces Generation Consumption Tom Emi^ s n Mobile o Carbon Monoxide 3,712 Total Hydrocarbons 351 765 Nitrogen Oxides50SulfurOxides Particulates 78 8 Totals4, 956 9 11 Neg. 3,723 361 10 Neg. 129 29 Neg. 348 225 2 14 5, 643 673 Miti ation Measures - Short-term emissions fromwnthe construction site until operations will be reduced by watering slopes are landscaped, and sprinklers installed. streets are paved, time dust control cannot be Work will stop dur uginand veryany windy periods). maintained ( e.g., g There are no major mitigation measures for the developer to implementregardinglong-term vehicular emissions. adherencetothecurrentStateandFederalairqualityAutomobilemovertheions Standards should significantly Pr long-term. As the project development takes place, that portion of the pro- posed bikeway along Golden Springs Drive, immediately adjacent to the project site, should be improved deby thedeveloper. Bicycle facilities should be provided ty Other mitigation measurforathecontained Coast AirBasin. The intent Management Plan ( AQMP) of this Plan is to achieve Federal Cl While While thisPlan has been approved by the EnvironmentalProtectionAgencyiswithholding approval until the StateLegislatureadoptsanInspection/Maintenance Program. further The State Air Resources Boarded inRahehApperidi ofdtheed tPreliminary mitigation measures discuss ion EIR be incorporated into the project. However, in a cOnmftigation by phone, ARB staff recognized the problem of requiring the measures when the exact land -uses to be accommodatedfore, ARB within given project are unknown at this t5ection of the Preliminary EIR. clearance to the Air Quality For reference, see Preliminary EIR, pages 11-13, 32-34, and Appendix B; Air Resources Board's letter, 9- 1-81; and applicant's letter, 1- 18-82.) Archaeological/Paleontological/ Historical a ical/Paleontolo ical/Historical Resources is considered archaeologically 5ettin - The subject property and the perennial sensitive because of its prominent ridges,records spring found on -site. A search of arlo atedgapproxifthe A mately1/ 3 region showed that 3 sites have been mile northeast of the projectsite. An Diamond Bar lCreek. The anext de just north of the property nee ar closest site is 11/2 miles to the north. According to the staff of the Los History, the bedrock formation ( Puente Angeles Museum Natural ormation) outcrops are 10 known to contain fossils in the vicnity (see attached letter, dated September 4, 1981). No record of historical structures was found on old topographic maps. Impacts - A cultural survey was conducted on the subject property. No evidence of archaeological resources was encountered. The Natural History Museum staff has expressed concern about the potential significant impact of the project upon paleontological resources (see attached letter, dated September 4, 1981). Mitigation Measures - The applicant agrees to call in a qualified archaeologist if evidence of any cultural resources is encountered during grading and construction activities. The archaeologist shall review the finds, draw conclusions as to their significance, and make recommendations for their removal or preservation. Work shall not resume until any significant impact has been mitigated. The applicant has proposed to have a minimum of one inspection per day during grading operations by a qualified paleontologist. The grading -plan shall specify that if any fossils are found during grading operations, work shall cease until the paleontologist is contacted to direct further operations. The Museum of Natural History staff is satisfied with these mitigation measures. For reference, see Preliminary EIR, pages 25, 33, and Appendix D; Museum of Natural History's letter, 9-4-81; and applicant's response, 1-18-82.) Scenic Qualities Setting - The proposed site is currently viewed as an unused, vegetation -covered series of minor ridges and small drainage canyons, climbing to a major ridge top. The site is bordered on the northwest by the 57 Freeway, a designated scenic highway in the County's Scenic Highway Element. The view of the property as it is passed on this freeway is primarily one of 3 major cut slopes, 100 to 140 feet high, and an uncut ridge. Three alluvial fans in between the cut slopes allow views up onto the property. The largest of these shows the remnant of an old avocado orchard, and provides the only significant upslope view. 11 I such of the property. From thisViewsofthepropertyanomore rtherlyignificantfrom a distance, the as from the 57 Freeway the slopes a vantage, the trees and vegetation covering freeway can be seen. ic ion The property is charactc iighway through the rDiamond raindBar gand tBrea which borders the seen raidly altered by large scale housing and Thisterrainisbeingpmultiple- use developments. Impact - Construction of the proposed project will latransforminto shrub-, and grass -covered slop The large a pietyof tree--, ment and landscaping• oneofterracedcommercialdevelopmentabovethesewillappear cut slopes for the freeway p acres theterraceddevelopment, with cut -slopes, roadways and intro- duced the development, approximately 9 of o n space up to the major ridgeline will be conserved. It of open space up islikelythatasmall portion of the open space will be cleared ofbrushtomeetFireCoderequirements. ly From the 57 Freeway, views °f the open space and ill pro landbmodbifi- largely blocked by the interven g slope will replace the large cations. A large fill and resulting from the alluvial fan which afforded views onto the property Othersmaller The fill will be 0 feet in height• will also be 57 Freeway. gullies adjacent to the freeway alluvialfansandrcialstructuresthemselveswillbe most visible filled. The comme some distance from the site. The applicant proposes to landscape the Miti ation Measures and maintaining Coast exist ng freeway cut slopes by planting Live Oaks on forty -foot spacings (an agrelannwill spbovideosome out with Caltrans). The full landscape P All maj native trees, including Coast Live Oaksiandscapedor cuts and fills throughout the project are to be fully p acres The other major mitigation measure is the provision of 9 of permanent open space. For reference, see Preliminary EIR, pages 28-32•) Traffic/Access provided by ett Sin - Primaryaccess to the proposed site highway.,, hway• Themain Golden Springs Drive) a four -lane secondary s Drive, approximately Grand Avenue to the east and Brea entrance tothesitewillbeanGoldenSprtothe west. rings midwaybetween Canyon 12 ri Golden Springs Drive becomes ColimaWestofBreaCanyonRoad, Road, which is classified as a major highway. a Freeways Regional access is pother mmeOrange bthediatelynonrthofPthensite. Access whichitersect each other the omona to the two freeways reachedlfrom Diamondiable from aAvenue;nd avaBar Boulevard, which Freeway can alsoDrive about 1 1/ 2 miles northeast of intersects Golden Springsfrom the proposed site; bothfreewayscanalso lbl/2emiles south ath- finder Road which intersects BreaCanyon the property. site The only exception Currently, all of the major intersections near thepropertyareoperatingataLevelofService (LOS) of A. is the intersection of n LOSiofeB (60a65%and ofthe peakapgm•Freeway capacity). which is operating at anlm acts - It is estimated that the proposed commercial/light rd industrial project will generate 13,740 vehicletripsperday, 1 00 trips during the evening peak hour. Roughly, including ,5 traffic will be generated by the 60 percent of the average daily traffic 15percentbylightindustrialuses, professional officeuses, During the peak p.m. hour, and 25 percent by approximately 45 percent of the the restaurant(s) will generate total traffic. All of the project's traffic wingll tfigure indicates theer and leave the edisa Golden Springs Drive. The followroximately approximately 60 percent of the tribution of outbound shownfiappinbound would be apof this, 25 thereverse). A rings Drive, and 35 traffic will travel west ut Golden r Freeway percent willenterthesouthbound Orange ( 57) The other percent will travel west °ntedPomona traffiic willwtravel east 40 percent of the project -genera on Golden Springs Drive. At the intersection of Golden Springs Drive and Grand Avenue, 35 percent will turn north wherean5d percent will turn left onto the southbound 57 Thee remaining 30 percent will turn east onto the freeways• where it will 5 percent of traffic rwill travel dSo tPercentuh on atraveling east and split onto Diamond Ba 3 percenttraveling west. xisting and The table below summarizes the ethe intersections most secposetion's venin peak hour traffic conditions at e g affected by the proposed project. 13 DISTRIBUTION OF TRAFFIC MAP Outbound traffic) Orange F r ev-wy w; . Intersection Route 60 westbound ramps and Brea Canyon Route 60 eastbound ramps and Golden Springs Drive Route 57 southbound ramps and Path- finder Road Golden Springs Drive and Grand Avenue Grand Avenue and 57 - 60 westbound ramps Grand Avenue and 57 - 60 eastbound ramps Diamond Bar and Grand Avenue Existing Traffic V/C* LOS** 55 A Existing Plus Project Traffic V/C* LOS** 67 B 55 A .67 B 41 A .63 B 40 A 52 A 08 A 33 A 21 A 28 A 35 A 49 A Volume to Capacity Ratio (V/C) Level of Service (LOS) 14 It is estimated that other approved and/or pending projects inwillgroeecs 1uC00closeproximitytothe trips within proposed project the vicinity- These projects peakadditionalthesubjectproposalwillgeneratethefollowingevening hour traffic conditions: Existing Plus Existing Traffic Project V/C* Traffic ; LOS** Intersection V/C* LOS** Route 60 westbound 55 A 67 B ramps and Brea Canyon Road Route 60 eastbound 51 A 67 B ramps and Golden Springs Drive Route 57 southbound 41 A 63 B ramps and Path- finder Road Golden Springs Drive 40 A 86 D and Grand Avenue Grand and 57 — 60 33 A 85 D westbound ramps Grand and 57 - 60 28 A 76 G eastbound ramps Diamond Bar and 49 A 88 D Grand Avenue Plus future traffic, the proposed project is Of the existing p percent expected to add: 2 percee centto Dto GoldenBar SpringsaD ive. p to Grand Avenue, and 43 p Both County Road Depae urtherthe cumulativeeanalysis of tpartment of hens- portationhaverequested traffic situation, taking into account the traffic which will be generated by the Chino Hills area. This area, which is located approximately 3 miles east of the project Bernardino County, is the subject of a specific plan recently completed by San Bernardino County Planning Department. The two transportation agencies want thedplani(iniitsoendhstate)fic generated as a result of the specific 15 accounted for in this project's cumulative traffic analysis. 1'he project's applicant thinks that conducting this type ofanalysisisanunreasonablerequestbecauseitgoesfarbeyond the scope of the proposed project. (Please refer to Caltrans' letters, 9-14-81 and 3-22-82, Road Department's letters, 9-3-81 and 3-5-82, and applicant's letter, 3-24-82•) Miti ation Measures - Golden Springs Drive will be widened o provi e e t urn pockets to both entrance streets for the project. Signals are recommended at these two entrances lete. Access roads shalloncetheprojectis60percentcomp be at least 28-feet wide. As the proposed project is developed, the applicant shall improve the designated bikeway along Golden Springs Drive, adjacent to the project site, with appropriate pavement striping. For reference, see Preliminary EIR, pages 26-28, Appendix E; Road Department letters, 9-3-81, 3-5-82; Caltrans letters, 9-14-61, j-22-62; and Applicant's letters, 1-16--82, 3-24-82.) B. An Si nificant Environmental Effects Which Cannot Be Avoided e roposal is m emented of the environmental effects discussed previously, those that can be reduced, but not eliminated, include: C. Biotia Air Quality Scenic Qualities Miti ation ects mAaGi,rPs Proposed to Minimize the Significant For purposes of clarity and simplicity, each environmental factor are discussed impact itself (see Section III -a). mitigation measures for concurrently with the The developer will comply with appropriate State and County codes dealing with thermal and sound insulatng ion tto implemnewructures. ent the conservation of heat and/or D. Alternatives to the Proposed Action Pro ect - This alternative would allow the Sprojectsite to No resent pen remain in its current condition; the p Space values would remain. The oosed)ro eCiver a 1861mature ive o liveoaks ts avoid the substantial grading proPwouldnotberemoved, and natural vegetatwould notbe cohered would be retained. The freshwater air iPoollution and traffic over. The incremental increase in air probably result in would not occur. This alternative fromlexpenses already incurred. financial losses to the applicant Reduced Size - A lesser -sized project could enable a reduction in the substantial land form modification ia ioand vegetation/habitat ation/hof theaitat . ure removalrequiredfor the proposedproject. ht be retained trees would be a consequent uentved and treductionhe ainrgenerattedspring itraffic and There wouldbeaconqimpactscouldbe reduced. air emissions. Scenic quality E. The Growth Inducin12. Impact of the Proposed Action ct is t con - The growth inducing effehfthe therepa eonodmajoreservice ofacility sidered significant, in tat expansions required. Theuse- The eneral Plan designates the proper y primarily for commercia en project will have a significant cumulative ef ectheharea-- combined with other approved or pending p j ects particularly on traffic congestion and air emissions. The proposed project would likely attract ttr c new residents to create. the area because of the employmentopportunitiesublicTnis will have secondary impacilitiesditional demand for p and commercial services and SECTION IV - ORGANIZATIONS AND PERSONS CONSULTED Copies of the applicant Preliminary EIR were distributed to gove rnmental agencies and organizations tosbedonsPeclfic environ- Comments were solicited on areas deemed mental concern. Also, the Draft EIR will be subjected to public review and public hearing. 17 0 LIST OF ATTACHMENTS 1. Initial Study. 2. Department of County Engineer -Facilities letter, dates August 25, 1981. 3. California Regional Water Quality Control Board letter, dated August 31, 1981. 4. County Road Department letter, dated September 3, 1981. 5. Natural History Museum letter, dated September 4, 1981. b. Department of Water Resources letter, dated September 4, 1981. 7. Air Resources Board letter, dated September 10, 1981. 8. Caltrans letter, dated September 14, 1981. 9. Applicant's letter, no date. 10. Applicant's letter, dated January 14, 19$2• 11. Applicant's letter, dated January 18, 1982 (to Caltrans & Road). 12. Applicant's letter, dated January 18, 1982 (to County Engineer -- Facilities). 13. Applicant's letter, dated January 18, 1962 (to Museum of Natural History). 14. Applicant's letter, dated January 18, 1982 (to Air Resources Board). 15. Department of County Engineer -Facilities letter, dated January 29, 1982. lb. County Road Department letter, dated March 5, 1.982• 17. Caltrans letter, dated March 22, 1982• 18. Applicant's letter, dated March 24, 1982 (to Regional Planning Department. ti COUNTY OF LOS ANGEL'SDEPARTMENTOFREGIONALPLANNING' STAFF USE 01Y INITIAL STUDY staff Member: StaJ5 N r5q aN SD k 1 I CaseNumber: ` 1e Sheet:i $ 3 . 3 KDA U. S. Quadran8 Thomas Guide- .: -3 ? Other yap Location -ES ma;,/ Case Date : 7" n Applicant/ Applicant's Representative: A PJ 7) Location: F Pv Sow- N C 7 N E M G - Description of Project: r. 11111g3. 7 Environmental Setting: A.6 ap I,• ! AJ .e N a I-f V 'A AJ c PI f n Ale, 11 A-- / i C: u S Fil III : tIt 1FJr iMAr; L. Zoning: ATVmA General Pion/Community Plan: CIS F A pSSr 6 C17DV11.4ffT, C7A l 16 FNf WrAJ 71s r40 3. TNtAti!(Ai9, TLAtf-e /Uu V1AI Co~A^v 431 CpNsrs , s OF 01AijA- vE Sr—r CoAl OF RnI.rs, PfP'itFf M Gr?RToRr 8 D 40 IIIF., t REVIEWING AGENCIES Responsible Agencies L% Regional Water Quality Con: J- Los Angeles 1. 1 T Coastal Commission 2. Trustee Agencies State Fish and Game State Parks 3. Others Topanga-Las Virgenes Resource Conservation, District 27 Santa Konica Mountains Conservancy L National Parks Mulhclland Scenic Corridor Citizens' Advisory Committee REG'DNA e7GN2FjCAN7E L State Clearinghouse Criteria 1' Air Quality Water Resources 17 Santa Monica Mountains v 7 Others Lr Other Jurisdictions Yhy SLAG Criteria OTHER PROJECTS IN AREA Project Description 3 G 7f(/ D 4aa4) 3o 5-413 ,rl, UP-/ S03 6 i t. Formal consultation on Initial Study determination not necessary due to development of previous review criteria with agency. 2— 1 m`C N pp a+ • i+ rt U C U N 4 W ENVIRONMiNTAI- v r.. o • FACTOR z w a Geotechnical Hazards Flood Hazard Fire Hazard EXPLANATION its. N-- '..-.` s- `"`. M-- ,,'`.-`" tom-.. .G u -•- Noi Se W - l Water Duality`,/ r AS r quality B i o t a a 3_ to 1 ENVIRONMENTAL pw o w EXPLANATIONFACTORz Archaeological Historical G Paleontological X Scenic x Z' -" Qualities II,,, i ti ck P—d t.l—'.'' Traffic/Access Liquid Waste x Education lY Fire/Sheriff , `' 4a Services v Otter Services, Including ? Utilities Other Factors e.g., Energy, NCommunityDis- ruption, etc.) 4- t . DETERMINATION On the Basis of this Initial Study: icant L7 I find the and jthereforeectwill nqualifies fogrnaothaveafNEGATIVEfect on the e DECLARATION. L% I find that although the proposed project may have a Signifi- cant effect on the environment, there will not be a sib icant effect -in this Case because the mitigation measures described above have been Nadded to the •WITHerefore, the CONDITIONS. project qualities for aEGATIVE DECLARATION L? I find the proposed project MAY have a significant effect on the environment, and ENeffe1ctsNhaveIMPACT idenREPORT tifiedabove. required. The potential significant DATE: 7 • REV I Eh ED PY RE- EVALUATI C'iS b- i COUf1TV OF LOS AnGELES ' - DEPARTMEnT OF C U T4 n f1 -FA k . 0 ' O E GI EER CIL CMIr. 550 50LiTH VERMf ):IT. LO5 An&(LES Cr+ 90020 RANMON:" V. LOOMIc ._ . August 25 1981 Mr. Norman Murdoch Planning Director Department of Regional Planning Attention: Mr. Raymond P. Ristic Impact Analysis Section Dear Sir: EVALUATION OF PRELIMINARY EIR TENTATIVE TRACT NO. 39679 ZONE CHANGE CASE NO. SO-059 The Department of County Engineer -Facilities has reviewed the sub- ject preliminary EIR and submits the following comments for your consideration: Grading and Building The grading design provides for the possible export of 300, 000 cubic yards of earth to contiguous Tract No. 39680. Since this quantity is grossly in excess of the quantity that may legally be stockpiled on Tract No. 39680, the grading for Tracts No 39679 and 39680 should be dovetailed in such manner that Tract No. 39680 will be ready to have fill placed under County permit when it becomes necessary to export from Tract No. 39679. Drainage and Hydrology Approved provided the appropriate ordinances and codes are followed. Geology and Soils The engineering geologist indicates that a soils investigation has been made also. The preliminary investigation results, including the scope of potential liquefaction and hydroconsolidation conditions, should be. included. The soils engineer should comment on the feasibility of necessary corrective work. Very truly yours, STEPHEN S. KOONCE County Engineer Thomas Green Supervising Civil Engineer III Subdivision Section S7K:TG 1cd 44 1 INI,,ewlorandum To Mr. James W. Burns Project Coordinator Resources Agency Resources Building, 13th Floor Sacramento, CA 95814 From : RAYMOND M. H£RTEL Executive Officer Lot A., gale's legiOn pate: A U G 3 i 1 V d 1 File e Subjed: Draft Environmental Impact Report for Tentative Tract No. 39679, Zone Change Case No. 80-59, County of Los Angeles SCH # 80121218 Reference is made to the subject Draft Environmental Impact Report DEIR). The project is for'development of Tentative Tract No. 396798 located in County of Los Angeles, into a commercial industrial tract. Our review indicates that wastewater management and water quality impacts of the project are not covered in the draft report. Sewage from the project area will be discharged into a public sewer system. The EIR should discuss types and quantities of wastewater contributed to the sewer system by the project, and demonstrate that there is sufficient hydraulic and treatment Thiscapacitytohandletheextraflowgeneratedbytheproject, includes the impact on existing sewer lines, treatment plant, and disposal facilities. RA ND M. HERTEL Executive Officer COUNTY OF LOS ANGELES ROAD DEPARTMENT y u 1040 ALCAZAR ST1eEET 7 03LOSSANGELES, CALIFORNIA 00033 -b} xf 9 PKJ? Telephone 236• 4111 September 3, 1981 CNTY -WIDL PROGRAM Dl5.L CORRESPONDENCE TO- THOMAS A TIDESIANSON, Road COMMMAIDnef DONALD G. DREHER, Chief DeFu«' VO, 50% 4089 LOS ANGELES, CALIFORNIA 10051 IN RI L• L[M2[ ag PI I TO PALS: Mr. Norman P. Murdoch County of Los Angeles Department of Regional Planning 320 West Temple Street Attention Mr. Raymond P. Ristic Dear Mr. Murdoch: PRELIMINARY EIR PROPOSED DEVELOPMENT IN THE DIAMOND BAR AREA TENTATIVE TRACT NO. 39679/ ZONE CASE CHANGE NO. 80-059 T-2 810,25.1 In response to your August 5, 1981 letter, we have reviewed the Traffic Access section of the subject Draft Environmental Impact Report. The report analyzes the project's singular effect on local roads and intersections, including trip generation predictions and level of service calculations with present traffic and traffic generated by the project. We agree that traffic from this development would not single-handedly impair the operating level of service of local intersections. Since the Diamond Bar Boulevard area is experiencing heavy develop- ment, the analysis should address the project's cumulative impact on traffic. Level of service calculations should not only consider existing and project oriented traffic, but should also include additional traffic from other local developments, which could significantly change the service levels If you have any questions, please call our Traffic Studies Unit at 226-6381. very truly yours, T. A. TIDEMANSON Road Commissioner R• N. SELTZE Assistant Chief Deputy RD:ds/4A Memorandum To 1 1. James W. Burns Assistant Secretary for Resources 2. County of Los Angeles 320 W. Temple Street Los Angeles, CA 90012 Attention: Mr. Raymond P. Ristic prom a pips, h. nt of Water Resources Los Angeles, CA 90055 taro = NEP - 4 1981 Pilo Noa Subied s DE IR TT 39679 ZC Case 80-59 County of Los Angeles SCH 80121218 The Department of Water Resources' recommendations related to water couserva- tiaa and flood damage prevention on the subject document are attached. Consideration should also be given to a comprehensive program to use reclaimed water for irrigation purposes in order to free fresh water supplies for bene- ficial uses requiring high quality water. Za Robert Y. D./Chun, Chief Planning Branch Southern District 213) 620-4135 Attachments w o re.^' see ta1.Er is r::d, the fn_lo::i,19 water coil tE-f:U L; s cula 'v n I. Lr,:-fltsh toilets (sue sc;tian 17921.3 of the and Safets Cac'e)• r:i.nistrntivc Cc.:e, T. ti= = . I.oL-;2.0 fart 6, f.rticic 1, 12(I-]w" ). het -=ter ] fr. a rccirczola_i.: s}•uteri (CP1i=ur. 3. ZnSul t,c: of wat EaCrEY Co--1s.:o:z rc.Lt]ati.sas). ec-- Intcric,1: r cLre : rt C^^...^i:.^.:. ti,• i o= r : `:.t`Tf € ri'=.ter t': --^ fr' _R '-- •-s Le rc: vc to ,, ;s.r cr less t-c:..... all . c =tct I,..^.ter c'_nsets: reco-.cnd 3 gc-Ic ns Pe- ilur:t. ae c:ith soli-closir,-Z talc eS- 3. ec}uip p 4. Fire `ati c:: reccr=cn all hot :ctcr lines in G ill?nF be i:':sulztc3 to pro fica rot aste, and to keep hOt ti.:ater faster -ith less water w pines from heating cold t:ater pipes. rorjrs: :eco7mend posting conservation retinders ir. roc::s s7 s rest roc-:s. Rrco -.:end t:.err.aststically-cc::troller r~ixirg valve fo- batty/sIC;:er. Lour+dr _aciiiries: recor_.-.'end use of water-conser-::r r r..odels of Las]:ers. 6. Resta rants: recc.^-:end use of kater-COnserving rocels of dishwas`•ers orL:ater Lpcn requeLst retroiitti=.g spray eritter s. Recor 4nd serving drink:n r only*. Exterior: 1. Landscape with lew rater-coasuo ing plus wherever feasible. 2. T:ir.i ice use of lawn by lirdting it to I&un dependent uses, such as playing fields. d areas. ?lulch applied on top of 3. ' Use mulch extensively is all lsndsca?- poilwillimfrovethewater -holding capacity of the soil by reducing evaporation and soil cor:piction. The repartr..ent of Water Resources or 10cs1 water district may aid in dLvcic- izo these r-steri Ols. L Of eter hesC;f-!ces c-ev.,nene-aticts for rind- iSa Prevention in flood-rror,c areLs, flood C.`'oe pvv.,criL1Pn mea:ure5 required to protect a proposed dY•,'c.1o;^r,ent should be bas=d on fco]louinf, guidelines": 1. All buildirlr structures would be protected 8rainst a I -year flooe. at is the State's Falicv to conserve water. Any potential loss to ground water si ould be J 2. In tt+ose cries^ nn: C01'27 ed b; Flcc+d I^sursmce Pate Map or a Floed Eoun P-1 and Fln;,d, c,; D_ti t': Feecrcj F Crgcncy AIZr,I E-.C'f:t E.oEnG t1:E flocG e1C' L': r. 1,cu ldary s1lould be shoU m on the Jr..•ri itor.7e3'ta: Imp Ye;• ort. 1 3, AT. 1£4sL UT)U rC :=e Of 't` }`t55 and ezre s to the de-'L1C-LVC-,t ShCt-'la a`; ails}' 1 c curir,r 100- yc.=r eer;r,- s fc: G11. structure_ s';auld t' b°'`J On 6etoiIEJ S4i15 a-^ e^,T_e r1T. especia,ly for MZl'a1LC' F.evrrpt2tiol: of t`,e s3opes s}?OL'.I. be done as socr. 4. possible. 6. The potcr.t=u1 dew =e to t::e prof oscd 6C,.elo pent by raudfloc; should be gS =Gr. L i = Lzit; cte es t[(' `_red• 7. Gr'1ir. should be li-'ite, to cry r.C:ztt s tc zir::aize Problems arrcci_stec t0 sedi-.cnt tre-.sport gm t l* mm- m SEA' -9 Ph 1 oa P::.4 CNI I -WIQL J1 VEL PRO"AM ISS CS IR September 4, 1981 Mr. Raymond P. Ristic Impact Analysis Section Department of Regional Planning 320 West Temple Street 1 5 California 90012LosAngee , I.R., TENTATIVE TRACT NO. 39679, DIAMOND BAR, ZONE CHANGE SUBJECT: DRAFT E. CASE 80-59. Dear Mr. Ristic: 25 and 33) paleontology is an issue an this parcel Contrary to the text (pp. The geologic and it should not be lumped wittherPuentesFormationroutcoropsyover muchof the report (Appendix A) states that produce fossils in the area. The finalaleE.I.R site. This formation is known to P ram of on -site inspection by a p onto - should state this and a mitigation programlogistshouldbeproposEdduringanygrading. Sincer,ly, Lawreice G. Barnes Curator of Vertebrate Paleontology LGS:lh cc: Dr. William B. Lee, Director LACM Wiltierr+ S. Lee, Airector Lron G. Arnold, Asrirrant Director NATURAL HISTORY MUSEUM LOS YANGELESardaLosAngeles, CCtOUNT -( f (21)7143414 Las Angeles County Museum of Natural History • goo EKAnsttion Soule Quorge C. Page Museum Hancock Pirk • 5801 1M1fiIshire Boulovard • Los Angeles, Calllorn+s 9CX136 • 101 (21 1 933-1451 EDMUND G. SROWN JR., Gave" STATE Of CALIFORNIA AIR RESOURCES -BOARD 1102 G STREET T.O. pox 2815 SACRAMENTO, CA 93812 le Date: September 10, 1981 TO: 1) Jim Burns, Projects Coordinator Resources Agency 2) Raymond P. Ristic - 320 West Temple Street Los Angeles, CA 90012 Project Title: Diamond Bar Commercial -Industrial Project SCH No. 80121218 Project Description: Location South Coast Los Angeles Diamond Bar Area AIR BA IN COUNTY) SPECIFIC LOCA3I0N Impacts 232.8 13 740 113.862 r A nT V MT Evaluation of Air Quality Analyses: Analysis of: Adequate Inadequate Comment Number Environmental Setting x Impact of Project Proposal and Alternatives x Mitigation Measures for Project Proposal and x 1 Alternatives — Cumulative Impacts Other Mr. Burns Mr. Ristic -2- September 10, 1981 COMMENTS: 1. The California Environmental Quality Act (CEQA), Section 21002.1(a), declares that the purpose of an environmental impact report (EIR) is to identify the significant effects of a project and indicate the manner in which such significant effects can be mitigated or avoided. Pages 12 and 13 of the draft EIR list some mitigation measures for the air quality impact of the project,_however, several other mitigation measures were identified by consultants in Attachment B, Air Quality Impact Analysis and Attachment E, the Traffic Study but not included in the draft EIR. These measures should be reviewed and included in the FIR if they are determined to be feasible. In addition, to satisfy the requirements of CEQA, the EIR needs to include a list of agencies responsible for the implementation of the mitigation measures and state if commitments for implementation have been obtained. ARB requests notification of future hearings/workshops. Yes X No ARB requests final EIR for review. Reviewed by Sincerely, Yes X No Beverly Daniels Gary Agid, Chief Local Project Support Branch cc: J. Stuart, SCAQMD T. Roberts, OPR 916) 445-0960 57PrTa: D -PAFLTMENT a-- ! RANSPbRT4VT,04 September 14, 1981 Ax i BA.RXL Y DIVIS I {S C• DOT? Department A-95 Coordinator A-95/CMA RZ7M 1120 X Street Sacramento, california 9581 1 Attention: Mr. Darrell Husum K. D. gTIZU - District 07 project Review Conents WE x DSIS for TT 39679 and Zone Change Case 80-059 for 801 121$ Development in Diamond Bar: County of Los Angeles ^ Project: It is proposed to develop 262 acres into a Commercial - Industrial '!tact with conventional public streets and with lots ranging from 0.6 acres to 11.6 acres. Large apes sPaCe areas si11 be deed restricted oubic" beld imate.lsitoibe acanted- that three ii11S yards of The Drift CIA has adequately addressed the project's environe Mental impacts, including impacts on traffic circulation. project's impact on nearby freeway on and off -raga, for both the orange Freeway (88 57) and the pomona preevay (SR 60), is well covered, however, the Draft EM has virtually no discussion of cusulative effects. Caltrans is aware of the tremendous amount of developmen tat activity in the Diamond Bar area Wb4T " Qns project s+ay not adversely affect traffic circulation or sir quality, several projects Iz the same vicinity way cumulatively present an adverse impact. tiro other potential developments are explicitly umtioned In the Dgg{. Tentative Tract go. 39680 is referred to as a contiguous project to which 300,000 cubic yards of earth fill is to be ported. Tract No. 36741 is mentioned as a cammercial- professional use development. ea:d am bBarutofseveralnow d.eve 1 opmen is proposed for We are emeerned that cumulative trafficintheincreases Diammayndadversely affect State transportation Vicinity. The Final taienshould con junction rithsotherlatraffic Impacts of thisproject r , AMN BARKLSY DMSzaN CHIEF - Darr September 14, 1981 Page 2 daily n traffic and peak houC= ulat r traffic ive reases in average dbe quantified and daily distributed. I— If I 4}ee10 B . D . STE=, Chief znvironmenta3 Planning Branch ranaportation District 07 Clesringhoua@ Coordinator For information, contact M'*llWoOd AT35) 640- 2246 or (213) 6 T CG:ew Attachment bcc: State Clearinghouse John Van Berkel - D07P Frescrvc ciA protect t'xint ir' tri-a•: mn( Start `. _ . Est s'li=.l, d =.l a:.ts ere often a3. +t- tc% 3c;'- r;.:^r c'oilditio::s Fi t:=.:r ueF• RavC•a r.-t.Cr ncce c3 to ert8:'1=-:1 r l?Ci`::t rctttatiei'. 5. Instal' efficient IrrJFztjen ,:h.ch r.j.=,ir.`-%c runof: athd rva^ori t'o:. and the rater which 1:'i„1} r[:acrs t.i'.e Y•14at roots. nrir irritatiar., tiers ZY-ste-3 S-L S fel L,Ctho@sailr.oi.st ure 6e'iCn: b a^.^ e1u i..-.sic irri:, of cs [fticic cr. 6. Use parvicue peg v- ratrrirl feasible to reduce Surface runuli crd aid ino,:,i ::«ter r,ci.rr'e. 7. Crad'iii-? of Slopes s.1w17d r:in Jize sLrfacE water vinoff. S. I ve: tiLatr the :cc::'l i}it of utiiizint rc-clair..s: a&_tc- utter, stored for irri^iioa. rgir;'tfi7, or ^•1=n-1 +T[.•8tc'r c, G t m Of nc r <e t:U:'t`r Ci!._'rUCccnN-i-r:Lu tc. urn`r7L1C Will rP4tt Of . T.Tti(1L'3 d in c , reCiarge. C`:1= t]T7^ i ^LUia Cirzir.L:c arCZS P-I d enccura e tlx i'C:'.7 rotl=r, of r. 4tur;- craiL,1:7 r•stc-.s in a .is cu]u a 2 is water reci, arge. 11, Floc rJains tad acuifer recharge areas s:rich are the best sites for grou:d Fate? recharge should be , f"0rvrd 4s Oren spsce. 2— ESCO L. BILL RICHARDSON Licensed band cSuroeyor ism E. 17TM STREET, SANTA ANA, CALIFORNIA 92701 • TEL. (714) 542.2233 January 14, 1982 County of Los Angeles Dept. of Regional Planning 320 W. Temple Street Los Angeles, CA 90012 Atten: Judy Trumbo Impact Analysis Section Re: Tentative Tract No. 39679 Zone Case No. 80-059 Gentlemen: As agreed a tree planting plan for the above referenced project has been prepared and two prints of which are submitted herewith. Additional prints will be provided upon request. The services of an expert consultant were used in the preparation of this plan. Note that a variety of species and sizes have been designated. selections were made based on the following considerations: Existing success in similar soils in the area Slope location, height and tree position Drought and water requirements Maintenancc requirements Replacement of oak trees (Quercus Agrifolia) Caltrans requirements Location and appearance Please note that in addition to the trees shown on the subject plan this tract will also provide more than four hundred additional trees in street parkways per County Street Tree Division requirements. Please advise us if this plan is not satisfactory or if you have any questions. Sincerly yours, i> Bill Richardson m e care ESCO L BILL RICHARDSON Licemed Land 6"Mwyar 1505 E. 1TTH STREET, SANTA &%k CALIFORNIA 92701 • TEL.014) 542.2233 Memo to Judy Trumbo Re: Tr. No. 39679 Dear Judy: 22—$1 With regards to the State Clearinghouse ofetherfanaldE R we and for your assistance in preparation comment as follows: Re: Caltrans We -will supplement the Draft EIe oeaninuterzrsde eofutraffice projects in theffectsofotherpj ar generation. Re: Re ion al Water ualit Control Board re expected from No waste waters other than ordinary sewerage aroectwillconnect directly the project. Sewer mains in the p j existing Angeles County Sanitation District trunk line to an ex g Los Sewage in this trunk line ultimatelyinGoldenSpringsDrive. arrives at the Sanitation District's treatment plantro ram is e aired to discharge other thanWhittierNarrowswheremltsaarereger reclamation p in effect. Special perordinarysewageintothe public sewer system. Re: Air Resources Boardof acts and The Board is satisfied W1attisfieddiscussion the mitigation ensures alternativesandwasdisceedix d Air Quality includedandwantedaddititicularonalanote$ofeAppe an The Boards review made eEphe Traffic Study. AnalysisandAppendixhoneandexplained that this undera We have contacted the reviewer by phone of the land only n not project and EIR are for the develop elydoes that the Zone; that the C—M Zone is ri5ly effect airlquality; largely or— C— MZ , nificant y permit uses that would sthe traffic engineer have been incorp reccomendations made by except where the reccom hations ated intothedesignoftheproject010yearstofullydevelopeelatedtofuturedevelopemen of the individual lots; thisare projectwill take betweeTe5uirements and policies will and that available measures, q change during this time frame• once covering Beverly Daniels, the reviewer has indicated Wde ilsattempt tothe above will probably be satisffacti address these issuestothesatisfactionoftheBoard. e care A emo to Judy Trumbo Re: Tr. No, 39679 Page 2 Re: Department of Water Resources Not covered in the Draft EIR and discussed here for your assistance. A. Consideration of program to use reclaimed water for irrigation at the County Sanitationpurposes 1. Sewage from this project ends up ittiDistrict's treatment pl n isear effecter Narrows where a water reclamation program would require 2. This is a hillside project and such a program uin back up to collection at the low end, storage an ncp al areas to be the higher elevations in that thevations of the project. watered are cut slopes in the higher ele B. Requirements by law. 1. The project is a lot only developement as proposed. 2. All aplicable law and regulations will be applied at thde time individual sites lots) are developed and p lan an permit applications ect will take 5 to ten years to 3. It is anticipated this pro j fullydevelopeandsomelawsand regulations are going to changeduringthisperiod. Individual ltakeelotdeelopmentswillthe be subject to new rules as t Y development period. C. Recommended general in 1. The list of recommended meai?ablettocthe are project. nature and many are not app 2. Items 1 to 7 under "Interior" do not apply. Note that Walnut Valley Eater District has a firm servicesirem.This a 50 lb. pressure reducer on all includes domestic service to commercial and industrial buildings. 3. Items 1 to 11 under "Exterior" are addreen to fssed asoreows: 1. Draft EIR states preferance will be giviver recommended retardant plants from the County g plant list. Most of these tend to be low in water requirements. Typically 2. No lawns are proposed as a part of the profect. commercial and light industrialsomeeorPnonesareve from me12 to 20% landscaping of which devoted to lawns. 3. All areas to be planted will receive some kind ohlmulch except the existing slope within the State R/W ch is to be planted with trees only a Caltrans requirement) . 4. The existing ground dfromcover is to osbe retainedot i baldeed undevelopes and the restrictedadevelopment. ated5. Trees within the afore said Wi eb/W'ateredre owith sPrgnklers, with a drip system, slopes principally rainbirds. Parkway trees will be watered with a bubbler system. Landscape maintenance and watering r„ i,a Anne by a professional. 1LI Fi- - - - III -wl- i I 1 I ii IF ._ lam' r I - F _ I -c _ _ H' + II LL u Jr MVIM11I1ai f Il f .. .Al.Zff— 41 _r -- — e1 lipI T117 111 -# -- II - I 1 GI! T ID IIF I y '-' II'--' ''ll R- .:,; '-. ' = r+. • Gi II I_ '- yr- . "III ` }.- I L +' 1 , w r A '.4 I- - y F 1 - UA Ali" IIMi 1 n trr• f' ' _ - — - 1 r k rt l ' I I I 11 1 1 GIJw = Ill I L - I 1 Iln - N_H } l• J _ 11 I 5 I I II J d lC. I E111111 'ill-f 'r 7 —' ' - - I fl 1 Memo to Re: Tr. Page 3 e of development, his typ b. Pervious paving is not suitable ted and benched to control 7• ?? They lost me. Slopes are plan run-off. efficient at previously covered -not practical or energy this location, g. Not applicableterrain is fairly steep and surface soilExistingSur system water run-off is fairly10. shallow- mantle is very a system of storm drains rapid and will be chanr elized by partially improved into nearby Diamond Bar Creek, p of the natural drainage course which empties into tstreaanm Gabriel River via San Jose Creek a short distance upstreamV,ater Whittier Narrows D Walnut Valley All contiguous areas are served t wells are still beingDistrictwhichrecievesallofitsfromthe Dsetropolitan Water District. •cent City of Industry used for irrigation water in adjacentthe City developes. but these are f ast disappearing to issue. Groundwater in this area does not sect end eup at Whittier off from this project partially improved ll. Storm eater run- of improved and p isNarrowsDamviaasystemroundwaterrechargingProgram channels. An extensive g which recieve much ofinoerationintheSanGabr1eSRiver bed downstream ° P this dam. Downstream commune thier water from wells are the beneficiaries of this Judy Trumbo No. 39679 program. E8CO L. BILL RiCHARDSON Grcenierl Land &,rueyor 1505 E. 17TH STREET, SANTA ANA, CALIFORNIA 92701 -.TEL. (714) 542-2233 January 18, 19$2 State of California Air Resources Board P 0 Box 2815 Sacramento, CA 95812 Att en : Kr. Gary Agid, Chief Local Project Support Branch Re: Draft E.I.R.—L.A. County Tentative Tract No. 39679 Zone Case No. 80-059 SCH No. 80121218 Reviewer: Beverly Daniels Dear Sir: We have received visa Los Angeles County Department of Regional Planning a copy of your Agency's review of the subject Draft E.I.R. a copy of which is enclosed herewith. Also enclosed are pages 11 to 15 of Appendix B, the consultants Air Quality impact Analysis and pagesand 13 of Appendix E, the consultants Traffic Study and pages 11 to 13 of the Draft E.I.R. Please note that this project proposes to develope a comr,ierci.al— light industrial subdivision under the Los Angeles C—M Zone. This project will develope only the lots and related public improvements. Individual lots will be sold for development by others and some lots will be retained for development by the project sponsor. We cannot at this time predetermine what business use will develope on any particular lot. However the C--M Zone permits most retail and service type business usesincluding office -- professional. Light industrial uses permitted provide for assembly and manufacture from previously prepared material.3 provided all operation:; are conducted within an enclosed building. Permitted machinery excludes drop hammers, auto— matic screw machines, punch presses exceeding 5 ton capacity and motors exceeding, one horsepower when u:ed to operate drill presses, gritluie-rs, lathes or metal nutters. Vorst examples of permitted uses Mclst likely to produce polutants are blueprint shops, :dotal platinL, tire retreading and auto painting (permitted only in conjunction with new car sales). eve- cell e Air Resources Board 1/18/82 Page 2 ated that half or more of this project will It is anticip light manufacture and service typedevelopeaswholesalefiggoingtooffice — uses with the bulk of the remainder banks, insurance professional type uses. Restaurants, compani es and the like are expected, retail stores and sales in significant numbers are not. ave.been incorporatedPleasenotethatalloftheconsultantTrafficEngineersto reccommendedmitigatingmeaprotthosethatrelateinto the design of this project except Also note the Air Quality lots. the use and devel nmmeasuresnt of hmentaoneduby possible in that the mitigate the lots for consultanthavebeenosesetoedevelopeonlyntPthethat theprojectPIPlimitfuturedevelopment. wation ith minimalimlusescommercialand addressed by the limited permitted under tthe tC-M1Zone. Per ff air quality Vehicle emissions are the major factor off judgement that the if this project is impleme'ted• It is our judgement proposed project V-ill reduce rather than increase a vtheehicle o3ectpropa P roe ective users. This milages for Most p- P of the Draft E.I.R. is discussedonpages12and13tiation measurwies related toedevelopsent buildingof pdesi n A g individual lots thin this project ' es of future d construction, such aenergyconservation measures and materi r an ee car pooling, ect. ' l11 be the subjectlace. employ ments take p E.I.R. requirements when these develop• sincerly yours, Bill Richardson cc: Judy Trumb° gional Planning Dept. of P,eCountyofI,os kngeles ESCO L. BILL RICHARDSON Biver.jeW Land (5urueyor 1505 E. 1TTM STREET, SANTA ANA. CALIFORNIA 92701 • TEL. (714) 542.2233 January 18, 1982 State Department of Transportation Ann Barkley, Division Chief Department A-95 Coordinator 1120 N Street Sacramento, CA 95814 Att en : Mr. Darrell Husum Los Angeles County Road Department Traffic Studies Knit 1540 Alcazar Street Los Angeles, CA 90033 Re: Draft E.I.R.—L. A. County Tentative Tract No. 39679 Zone Case No. 80-059 SCH No. 801212A Gentlemen: In response to your Departments review of the subject Draft E.I.R. and the concerns expressed over cumulative effects of the proposed project in conjunction with: other pending proposed projects in the study area we are providing herewith additional Traffic Study prepared by Yunzman Associates. This additional study includes all traffic generators, existing, proposed project and pending; future developments as revealed by LosAngelesCountyPlanningDepartmentrecords. The stud; area has been divided into ten zones (Figure A) Existing plus project plus pending projects traffic volumes are shown on Figure B and listed by zone in Table A. The level of service at all intersections will be reduced when pending projects traffic is included. Grand Avenue is particularly affected. Los Angeles County Road Department has expressed concern for the intersection of Grand Avenue and Diamond Bar Boulevard. This intersection is reduced to an F level of service when all traffic generators are included and can be raised to a D level with intersection improvements. Please note that the subjcct project co tributes only 20 of the projected traffic volume on Grand Avenue easterly of Golden Sprints Drive and is not a significant factor at this intersection. w e care State Dept. of Transportation Los Angeles County Road Dept. 113.8182 Y<fge 2 The intersection: of Grand Avenue eena Golden are1reduDedve and Grand Avenue E.nd the 57— y P from an A ]evel of service to C and D levels during P.M. peak hours when a7.1 traffic generators are considered. An examination of Table A reveals that pending future projects from Slade :'seas 1 and 4 are the rrajor trafficect generators to these intersect koneriodetraffictatrthese proti ides 1;,; of the total p^ P intersections. Of the pending future Projects approximately 1,500 vehicle trips are projected to g° r`r,ificantlynch angeGolden intErscctionDrive. This increase will not si, er Road and levelsofserviceatintersectionsonBreaCanyonon Pathfinder Road. Sincerly yours, Bill Richardson d It- ESCO L. BILL RICHARDSON G/fros.d Land dusveyor 1505 E. I TH STREET+, SANTA ANA, CALIFORNIA 12701 TfL pii 5 2 731 January 18, 1982 Los Angeles County tSuseum Of Natural History 900 Exposition Boulevard Los Angeles, CA 90007 Atten: Yx. La,.rrence Barnes Curator of Vertebrate Paleontology Re: Draft E.I.R. Tentative Tract No. 39679 Zone Case No. 80-059 Gentlemen: response to the review of the subject Draft E.I.R. by In reap lease be 1,-uri. Barnes of you_r staff please advised that we have o per da- during arranged for a minimum of one inspection The grad-Ing excavations by a q p inspections to be made by the following named person: Bernard Lame, Pled Earth Science Dept. Cal Poly Pomona Pomona, CA 91768 Phone: (714) 598-4$09 The prof anprojectGradingPlan shall apecif.y that in the eventanyfossilsarefoundduringgradingoperationsworkin the vicinity of the find war linCease, af.faffected areaoiseto notified and any further be performed as directed by Fr. Lane or his authorized representative. Niy thanks to r!,r. Burnes of your staff for his recent courtesy. Sincerly yours, Bill Richardson cc; Bernard Lane, Phd Cal Poly Pomona Judy Trumbo Dept. c fRLosonalAiAngelesCounty m e care I LI- - T - 1 _-1` 1= -gym - - - - ___7 I I I 'Ia , - = 4 I I 1 I y I 'iti .l -r.• T- 14 1 I 11II, G_I-- - I I _ 1 I. IX IN A r7- _ Il I rt."U 3 I Alca 1 1 - 111 11 I _ I ' •• I l - I I . I y - _ - _ I 1 - , _ 1 I ICI I Esco L. eiLL RicimmuaoN Licenjrd Geed cSur— y(,r i505 E. STTH STREET, SANTA ANA, CALIFQRNiA 92701 • TEL. UM C42.2233 January 18F 1982 Mr. Stephen J. Koonce, Los Angeles County Engineer 550 South Vermont. Avenue Los Angeles, CA 90020 Atten: Mr. Thomas Green Supervising Civil Engineer Subdivision Section Re: Draft E.I.R. Tentative Tract No. 39679 Zone Case No. 80-059 Dear Sir: In responsetoyour De arasents review of the subject Draft E. I.R. please be advised Grading and Building The area covered b)'r' contiguous Tract No. 39680 has been in- corporated into the larger Tract No. 39679 (revised) as a lot for future development. The possibility of exporting 300, 000 cubic yards of earth onto this area is a feature thathasbeendeletedandtherevisedtentativemapreflectsa balanced grading design. GeoloF, y and Soils An expanded geologic report, including project feasibility has been submitted to your Department. A preliminary soils investigation is under way and will be submitted shor ly. Sincerly yours, Bill Richardson cc: Judy Trumbo Dept. of Regional Planning Count) of Los Angeles ca e care G gas i ! r counTV OF LOS AnGELES' DEPAATMEnT OF COWITY+ EnGmEEA-FACILITIES LrFaF'W• STEPHEN ' KOONCE 550 SOUTH VE{3(1-om, LOS AnGELES, CA 90020 Ir,INTY 1 NI,INE F H BOARD OF SUPERVISORS 1213) 738-2011- HIAM BARMACK LNIEF DEPUTY January•Q9 1982 - ``,"• Mr. Nor nian Murdoch Planning Director Department of Regional Planning Attention: Mr. Frank Giannini impact Analysis Section Dear Sir: EVAUUATION OF DRAFT EIR, ADDENDU1I #,1 TENTATIVE TRACT NO. 39679 ZONE CASE NO. 80-059 The Department of County Engineer -Facilities has reviewed the sub- ject draft EIR and submits the following comments for your consideration: Grading and Building Grading is approved provided that a tentative map is submitted for Tract No. 39679 which includes Tract No. 39680 and the possibility of exporting 300,000 cubic yards of earth onto the adjacent area is eliminated. If this is not done the addendum is not satisfactory. Drainage and Hydrology Approved provided the appropriate ordinances and codes are followed. r r e T,nr. Norman lllurdoch ' Tract I\Io. 39679 January 29. 1982 page 2 Geology and Soils ogy provided the appropriate ordinances and codesApprovedforgeol dre followed. ingTheresultsofthepreliminarysoilsinvestigation, hydrogons lidationd conditions assess- ments of potential liquefaction should be incorporated into the EIR. The soils engineer's comments regarding the feasibility of necessary corrective work should be included also. very truly yours. STEPHEN' J. KOONCE County Engineer Jerald C . Thompson Super,,-ising Civil Engineer III Subdivision Section S•JK.,1CT r e7—=4T COUNTY OF LOS ANGELES i 4 THOMAS A. TIDEMANSON, Road Commissioner DONALD G. DREHER, Chief Deputy ROAD DEPARTMENT 1540 ALCAZAR STREET LOS ANGELES, CALIFORNIA 90033 Telephone 225-8111 March 5, 1982 Mr. Norman Murdoch, Director Department of Regional Planning County of Los Angeles 320 West Temple Street Attention Mr. Frank Giannini Dear Mr. Murdoch: ADDRESS ALL CORRESPONDENCE TO: P.O. Box 4089 LOS ANGELES. CALIFORNIA 90051 IN REPLY PLEASE T - 2 REFER TO FILE: 810 . 25 . 1 REVISED TRAFFIC ANALYSIS PROPOSED DEVELOPMENT IN THE DIAMOND BAR AREA TENTATIVE TRACT NO. 39679 Our September 3, 1981 letter responded to the Preliminary Environmental Impact Report (EIR) for the subject development. In our response, we requested the developer to supply us with the cumulative impact on traffic of all developments in the area. In a December 10, 1981 letter, the developer transmitted to us a revised traffic analysis which accounted for trips generated by the subject development and other developments within Los Angeles County. The revised study, although com- prehensive in.its inclusion of Los Angeles County developments, does not include the impact of trips generated from the Chino Hills Specific Plan in San Bernardino County, which is adjacent to the community of Diamond Bar. The Chino dills Plan will generate a significant amount of traffic onto Los Angeles County roads within the study area; therefore, we request that this traffic be included in the cumulative impact study for the subject report. We agree that traffic from this project will contribute a small percentage of the total traffic generated by all future develop- ments. Considering all projects in Los Angeles County (excluding the Chino Hills Development), the report indicates that six of the ten intersections studied will operate at level of service D or better, and three will operate at level F. With future geometrics intersectional widening), the report indicates that all inter- sections will operate at level D or better. At Grand Avenue and Diamond Bar Boulevard, adding a northbound left turn lane and an VIT II urdoch Mr, Norman'M rove the intersection to uired turn lane would imp would be required eastbound left shows that additional lanes level D; level D. Table E P Grand Avenue to p and Grand at: Golden Springs Driv../ s to produce level C; n wish eastbound s to produce level D• Avenue/Route 60 westbound ramp s suburban communitiesr p,venue/Route 60 eles County Bervice C the design to point out that in oscons.der level of rather than level such as Diamond Bar, we eration, capacity and desired intern ection op D as indicated in the rep fins, please call our Traffic Studies Unit If you have any quests at 226-6381• Very truly yours 2- March 5, 1982 T. A. TIDEMANSON Road Commissioner R, N- SELTZER Assistant Chief Deputy RD:em/2B Esco L. Bill Richardson cc: Mr. Dave Tilton (DRP) 94 9 EDMUND G. BROWN )It., Governor STATE OF CALIFORNIA—BUSINESS AND TRANSPORTATION AGENCY DEPARTMENT OF TRANSPORTATION t • DISTRICT 7, P.O. BOX MA, LOS AN ES 9W51 213) March 22, 1982 Ms. Judy Trumbo Los Angeles County Planning Department 320 W. Temple Street Los Angeles, California 90012 Dear Ms. Trumbo: Review of Traffic Study for L.A. County Tenta- tive Tract No. 39679 Zone Case 80-05 SCH No. 80121219 07800-9o8008-5953o60 Caltrans has reviewed the supplemental Traffic Study (dated 12/10/81) prepared by KunzmanAssociates Wehavethefollowing Lcomment. BillRichard - Eon and Los Angeles County. The Transportation Analysis and LARTS Branch finds the supplement deficient, in that it did not consider the accumulative effects of the Chino Hills Specific Plan. while Chino Hills has not yet been approved for development, in all nore ithia eventualityproval lcannotl be obeh- coming. A traffic study which B considered complete. Since Kunzman Associates prepared the traffic a alysis Chino Hill Specific Plan, we suggest for Diamond Bar edca'btraffictestimateoforhthe years should be pressn 1995 and 2000. Very truly your , K. D. STEELE, Chief Environmental Planning Branch & Citizen Participation for the estimates These 1985, 1990, t 4 ,, r F_ H' - s r r. . J i :l r M ESCO L BILL 106 L iTTH STREET. SANTA AWA- LA- ` March 2 ' I - Mr. Norman Murdoch, Director County of Los AngelesDepartmentofRegional Planning 320 West Temple Avenue Los Angeles, CA Atten: Yr. Frank Giannini, Section Head SectionImpactAnalysis Re: Draft E.I.R. Tentative Tract No. 39679 Diamond Bar Tile "2•zw Dear Sir: for the The traffic study incorporated into the Draft project generated T ro ect covered existing tr2.ffic Plus prof g erate subject p jtrafficand indicates all affected interseFreeway rramps attinthe5r at an A Level of service ealld ramps aL Brea Canyon bo Fatl-Irldei• n"du + auld`providevarBeLeveleway f service. Road s - which ramps r recoy.:-merided expansion ofetember19$1 the Couwlty Road Departments review of the Y— ir S p by our °I f draft E•I•R• preparedto include traffic from other local dev !OP the traff is study ts. Caltrans review was similar and asked for additionalmen . study to include other projectsdedtraffic study was sub.:itted incorpor— In January 19 2 an expanded ments in the vincinity. all penning and projected detielop. ating e levels are reduced for intersectiony•alogVel ndj All ser.ic Avenue and :•:ith i:1-er-ectDoLevelrUvements pewit Level - service are reduced to the Road Depc.rtment and we undcrs tand Caltrans alsoCurrently ,te expand the traffic study once more to in — are requesting S Ecific Plan" now in arethe effects of the 'Fo iSanHBernardino# 1:hich plan P reet in preparation by the County sect vj&thtoextendGrandAvetointeraware that°thetRoad Depart — poses to in,er— the southwest Chino area* e area of Industry isthaspreparedPlansto s and thatnthevCityutheInmen60Freewaysansectwiththe57- going to fund a portion of this extension* wn care T- I I11 1 = = Id r• - - - 1 -7 IH ra _ In -- 1 }: PI 1 J 1 1 _- ; y I Imo - - - _ 7 +-p t 1 - I I" t _ jai FIX At 1 I11 1 _ 1 -- y , I - I _ r - 1 11 ' I 1 _ la AUf 110I I= I 1 lie M t ALa. Imo,-' " f i•'*-, - I N11 I 1 I I 711 1 • 11 fill l I I it -- ,,-..{-_, t. - - - t j ---f r ..j I - Ily! _ _-'R 4i+r]Iti DTI r Ir-...: aye ;` - r Y, i JIJtH I _ 1.. { lIF I Ll' I 1 ll I I n;r,9 t-. - - Tra 14 -r IVY jazz. 4 Al IRM III 1 , I- p I I I I 11' 1 I. =1111 1 I ' F' - ' L ' I l _n -_- . I `I I I f _- - 11 - - - 11 11 I Il _ 11 JI I I I I OR I_ 111' -, I' III I .I = I =1 1 111 I 1 IC ESCO L 131U RICHAPOSON aimmord Land darwyer 160 E. 1TTH STREETAANTA ANA. CALIFORNIA 92M • TEL Q14) W-2233 Mr. Norman 14urdoch March 24, 1982 Page 2 Thus Grand Avenue will extend from the City of Covina to theThestudy City of Chino and thence easterly ofaitdarenWeilebeyond the of this highway or majorP scope of the subject project. We have already demonstrated that local area intersections on Grand Ave will operate atperiodsifplannedaDLevelofserviceduringpeakP.M. densities and this is area proje-ts develop at the PP..MM. projected without the extension of Grand Ave in either direction. subject project contributes 3' of the Please note that the subj 3 trafficonGrandAveeasterlyofGoldenSpringsDriveand1of the traffic westerly of this intersection. These percentages con — will be even smaller if Grand Ave is extended. It is our con— d the tention that traffic studies for maJovE:rnmentarteries asencynffunctionlocal co*rmunity is more properly a g andisnotahardshipalocalprojectsponsor should have to resentinstancethesubjectprojectbear. particularly in the p enerator, does not front on Grand Avisnotraffic t the adata than any other and we have already provided local project To date. Sincerly yours, Esco L. Richardson W e care DRAFT ENVIRONMENTAL IMPACT REPORT TENTATIVE TRACT NO, 39679 ZONE CHANGE CASE NO, 80-59 LOS ANGELES COUNTY CALIFORNIA PREPARED FOR; THE COUNTY OF LOS ANGELES Prepared By B= RICHAMSON & A.=. 1505 E. 17th Street Santa Ana California PREFACE The following Draft Environmental Report has been prepared in accordance with State EIR Guidelines, South Coast AQMD Handbook for EIR Reports and has been compiled in content and format in accordance with Los Angeles County Department of Regional Planning Guidelines. An effort has been made to ovide sufficient information in readable form in order that a non-professional reader may form an independent opinion, together with adequate data for the professional reviewer to form judgement on the potential environmental effects of the proposed Project. i SUMMARY This proposed Project is represented by Tentative Tract No. 39679 and Zone Change Case No. 80-59. The project consists of 232.85 acres in the unincorporated area of Los Angeles County, situated along the south- east side of the intersection of the 57 (orange) and the 60 (Pomona) Freeways and lies near the easterly limits of the City of Industry and the westerly limits of the community of Diamond Bar. The Tentative Map proposes a subdivision of conventional streets and lots of varying sizes with approximately 74 acres in usable lot areas. The Zone Case Application is to permit the development of the proposed lots with office -professional uses, light industrial uses, a major restaurant and some support facilities of minor retail and service character. The Impact Analysis Section of The Planning Department has made an Initial Study Determination as a result of the project applications and has identified the follow- ing six factors as having potential significant effect and are the subject of this Draft EIR. ii Z-NVI RONMENTAL FACTOR MITIGATING MEASURES Geotechnical Hazards Regrade some existing stones to flatter angles, removal and/or recompaction of ancient land- slide areas, redesign to delete cut slopes in adverse conditions. Air Quality Dust control during grading, use of Public Transportation {bus stops) stretched out building schedule over a period of years, deletion of heavy retail uses, adherance to Codes for thermal insulation, Fed- eral and State Emission Standards. Sicta (Loss of wild- Major tree planting program, con - life habitat including struction of watering devices in small riparian area) habitat areas, replanting of new anal existing slopes, permanent preservation of major open space area, project landscaping. Archaeolcaical Paleontological No impact, not a sensitive site, Archaeologist to be notified in event artifactual material is exposed. y'raffic/Access widening of Golden Springs Drive, provide left turn lanes into Pro- ject, signalizaticn of intersec- tions into Project, all affected intersections will provide service at Level H or better. Scenic Qualities Flatten some existing highway slopes, enhance or replant exist- ing slopes, major tree and land- scaping program. iii TABLE OF' CONTENTS PREFACE - SUMMARY i TABLE OF CONTENTS SECTION I -- PROJECT DESCRIPTION 1 A. Location 1 B. Objectives 1 C. Project Characteristics 1 SECTION II - ENVIRONMENTAL SETTING 5 SECTION III - ENVIRONMENTAL IMPACT STATEMENT 7 A. The Significant Environmental Effects 7 of The Proposed Project 1. Geotechnical Hazards 7 2. Air Quality 10 3. Biota 13 4. Archaeology/Paleontology 25 5. Traffic/Access 26 6. Scenic Quality 28 B. Significant Environmental Effects Which 32 Cannot Be Avoided If The Project Is Implemented I. Geotechnical Hazards 32 2. Air Quality 32 3. Biota 32 4. Archaeology/Paleontology 33 5. Traffic/Access 33 6. Scenic Highway 33 C. Mitigation Measures Proposed To Minimize 33 The Significant Effects 1. Geotechnical Hazards 33 2. Air Quality 33 3. Bicta 34 4. Traffic/Access 34 5. Scenic Quality 35 6. Energy Conservation Measures 36 TABLE OF' CONTENTS (cont'd) D. Alternatives To The Proposed Action 36 1. Reduction In -Scope 36 2. Mixed Residential -Commercial 36 3. Residential Only 37 4. Park and Recreational Purposes 37 5. Open Space 37 6. Agricultural Use 37 7. No Project. 38 E. Growth -Inducing Impact Of The Proposed 38 Action SECTION IV - INITIAL STUDY - COUNTY OF LOS ANGELES 39 SECTION V - ORGANIZATIONS AND PERSONS CONSULTED 40 APPENDICES A Tan Cover) Geologic Investigation B Blue Cover) Air Quality Report C Green Cover) Biological Report D Gold Cover) Archaeological Report E Pink Cover) Traffic Study LIST OF EXHIBITS AREA MB.P - OVERALL Following Page I VICINITY MAP Following Page 3 TENTATIVE MAP Following Page 4 PHOTO LOCATION MAP AND PHOTOS Following Page 5 BUS ROUTE MAP Following Page 13 PLANT COMMUNITIES MAP Following Page 15 SCENIC VIEW PHOTOS - FROM 57-60 Following Page 28 FREEWAYS 1, I - PROJECT DESCRIPTION The project proposes to develope Tentative Tract No. 39679, into a Commercial -Industrial Tract with conven- tional public streets and with lots ranging from 0.6 acres to 11.6 acres with large open space areas to be deed restricted and held in common. A. Location The subject property is located in the unincorporated area of Los Angeles County at the intersection of the Orange (57) Freeway and Golden Springs Drive in the westerly portion of the community of Diamond Bar. The property has 1 mile of frontage along the southeast side of the Freeway and Golden Springs Drive. B. Objectives It is the initial objective to obtain the necessary approvals and zone change to permit the recordation of a final tract map, approvals of engineering de- sign and construction of the proposed project. The midterm objective is to provide useable land for development with commercial and industrial buildings and enterprises over a period of 5 to 10 years in a high quality development that will attract office -professional users for approximately one-half of the project. The development plan provides a variety of building sites with different settings and has the potential to combine lots for larger users. Long term objectives are to develop a project that will retain its value, protect the sponsors and in- vestors equity and long term interests at a profit. A property owners association will be formed by the project sponsor to hold and maintain the open space areas, landscaping and provide for the upkeep and suitability of the project for higher class users. C. Project Characteristics The project proposes to develop 232.85 acres into a commercial -industrial tract with the following appro- ximate land use areas. 2 ytv!,j O. MOM irp nww.•.n• ''- 4:,M 4„K;i t'JS l4ft1 - 77-1 i NOLIYNOOO 77 i • \ . -. r e ilj'''_+ s 4, y 'r.w..'t . _ i/ / a T I ' •% :./ ''`v r. W~ i 1' A POMONA I wI i 13, LIi,( f' '%., j,,,.,.• w \ Maul" 717..7 ii- "':"`I ; " ! ' .- ""°' `?+ li PROJECT117 A :I - r SDId G17[ y f _ r r. I I _;Y_ wrr 7n ncxl.cs __ 'cL'v---•.', OOMI1 fY( i. ir .—' M.. 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V[.rr -.* 4a 1 /,' •. ' `` _ _ lam` r:r _'; .r '; Lam. •'`' ' •-'\ •;• 1 {-y. -\ \ '_'r 15. ram. •/ 1 _ ,^1\\: rf' -- , 'r'i •_ •spy- _ _ _ ^=- ,-i 1- _ r r• ' .. y vii ^ '.-'- \, r jj : /I .. _ / -• _ 1 ~- 'mac .•:."..i,• . f; { ' .f [, w, ' \\\. y` -': •.\. , ••l !'; `/__ .' .. 'i • a w;,,,1 •' - -_ .%ram — _ , f.. =_ i ''• ,r ..'/ •/ _ 1 { t'` `\• _ f ' L/ ' 1 .,\ : -- -. \ r i r. +` - — •' ^ '',' =' _ - ice. :-_`. )r.; r' .'.„' y' - j r '\c `` - • S', Li; / \ •.,t', : f' ^ ` r _ ' ..,`1 _ - -.1 i - -4 . ,:_.. Rt y •,.h. '. '- - Lam• ., r /, . - . - _ ti ~'` - _ : t r `• `• \ - i E - _ • i': am l j; r t-r BILL RICHARDSON & ASSOC. PHOTO LOCATION NEAP 4 1. Useable lot areas including setbacks 74 Acres 2. Dedications for public streets 18.1 acres 3. Slope areas adjacent to Freeway & Golden Spring Drive 10.5 Acres 4. Major interior slopes (lots) 9.7 Acres 5. Cut slopes adjacent to open space 8<2Y Acres 6. Untouched open space 105.4 Acres Deed restricted open space (areas 5 & 6) 113.5 Acres Landscaped areas (areas 3,4,5 and parkways) 33.1 Acres The proposed development takes access from Golden Springs Drive at two locations and provides a doiAble loop (fig- ure 8) pattern of streets. The project lies at the intersection of the Pomona (60) Freeway and the Orange 57) Freeway and has access to these freeways in both directions at Grand Avenue, Brea Canyon Road and Path- finder. All public utilities are available from Golden Springs Drive and existing water supply is more than adequate. Police protection is provided by Industry Sheriff's Station and the nearest County Fire Station is one mile away on Grand Avenue. Two RTD bus lines pass the site on Golden Springs Drive. The development plan reflects a balanced grading project with large cut and fill areas and resulting slopes. The design provides for the possible expert of 300,000 c.y.. of earth fill into proposed Tentative Tract No. 39t]80, a contiguous project proposing 20 residential lots ir! a 20.6 acre parcel on the southwest ena of the sul j pact project. This tract is the subject of a separate FAR. All storm water runoff is to flow through existing _:ul- verts under Golden Springs Drive and the 57 Freeway, and thence into Diamond Bar Creek. All sewers will connect to an existing sanitation district trunk in Golden Springs Drive. The project is separated from a,'jacert residential. areas by the 57 Freeway on the ncr-h,,. a l: ri to be left untouched on the southwest and ty undevel,-:ped _)pen space on the southeast and east. The open space will range to 20C feet or more, in elevation, above the L--ro-- posed project. E it is anticipated that the community of Diamond Bar will incorporate during the development period of the project and that this project will be included within the boundaries of the incorporation. The project will probably provide this city with its only opportunity to include a light industry area within the city limits. In that the Diamond Bar area is largely a bedroom commu- nity, the provision for light industry and office - professional uses should have some favorable impacts. Heavy industrial sites exist in the adjacent City of Industry. II - ENVIRONMENTAL SETTING The subject property lies on the westerly fringe of the Diamond Bar community and is bounded southerly and easterly by developed residential areas and commercial along Colima Road, northwesterly by a vacant parcel zoned C-2, thence by the conversion of the 57 and 60 Freeways, thence by vacant land and the City of Industry, northerly by the scutherly end of the Diamond Bar Golf Course and northeasterly by commer- cial -professional uses proposed by Tract No. 36741. The property has a 4,000 foot frontage along the 57 Freeway and a 3,000 foot frontage along Golden Springs Drive. The property lies on the northwest slope of a long north- east southwest trending ridge the top of which as been developed with residential subdivisions. The subject site is cut by downslope ridges and gulleys with some alluvial fans adjacent to the 57 Freeway and Golden Springs Drive. Topography ranges from gently rolling to steeply sloping with numerous cut slopes along the 57 Freeway and Golden Springs Drive. Elevations range from a low of 600 feet in Golden Springs Drive to a high of 1,050 feet on top of the ridge. The appearance of the property has been photographed from various locations. A panoramic view of the entire site was taken from a hill north of the site across the 56--60 Freeways. Onsite views are shown from high points on the ridge along the southeast side of the property. The follow- ing pictures and photolocation map illustrate the appearance of the site. 0 The site is covered with several types of plant communi- ties due to the varied topography, fires and influence by man. These have been catagorized as disturbed grass- land, sage scrub, tall shrub and walnut/oak woodland. Several small sandstone rack outcroppings occur in the northerly portion of the site and one small spring exists near the intersection of Golden Springs Drive and the 57 Freeway in a gulley area. The disturbed grasslands cover 40% of -the property with the oak/walnut woodland next in area covering 25% of the area. Wildlife is abundant on the site, particularly birds. Two species of lizards and three species of snakes were observed. Ten species of mammals have been seen on -site and nine others are expected to occur. A lack of water would seem to be the most limiting factor. The nearest potentially active seismic element is the Whittier -Elsinore Fault some four plus miles southerly. This fault has no record of historic acitivity. The existing bedrock present are siltstones and sandstones of the Puente Formation with siltstone predominating. These are badly fractured shales with wide variations in bedding plane attitudes. The site is in the Pomona -Walnut Valley area of the Los Angeles Air Basin. Air quality for the area is generally regarded as adequate. Eowever, low inversion layers coupled with light westerly winds impact the area with pollutants, principally vehicle emissions, from the Los Angeles Basin. The subject property fronts on the 57 Freeway, a desig- nated scenic highway. Three major cut slopes, resulting from freeway construction, ranging from 100 to 140 feet in height, along with one major uncut ridge, dominate the immediate view. one large and two small alluvial fans intervene the cut slopes and provide views uphill. The larger fan contains the remains of an old avacado orchard. See Photo. (Exhibit "H") TENTATIVE MAP TRACT NO, 39679 1 n 3 w m 1 CO -14 W W V, O J f-i f4 N ri u7 A G in r-4 5 r-0 0 •r-I U 41 U Y Ej 4-1 a U) 4 r- 4-i O U Q) r-1 rA M ri Q rp 4J •r-i Q7 QJ 1-1 0 Q) ri. -P ri O 11cn11Wri 4 a•% 43 3 rZ O V) ra rI ra 00 3 Q) a} ri O 0 ra Gi l r Y•ti it T S V a4 V h yjj, Ajmer 4j un 44 1 i4-) i4 f4 0 O J 4 n aJ r' a J En m ri 4-4 Ee Q) N f4 0 r. U-HO 4J 4 X N ro 1 4-) 0 rd t7l 1) 4J fO 4-4 a 3 rd -A (1) rl 4-)b J 4-4 (d +) H 00)011u En mfO ro 0) aD m a, • • 4 i Qa r0 •,f 1 x >,r-E-1 U2-1 0 w rp I;s > 3 rq A Q) A U) oW•HrdZo 4+ 4-4 m C s4 s4 a U a roc 4a>1 W 3 r. Qi 4-) Q) w 3 4-1 0H U] (A lr) 4-4 LW 4a O O ai 3 > a)00 4a f0 o i u R " 10 P4 7;- 4 IN tooRrf ul cn 04 >I 4 rL4 U) 44 u. 0 C) q 4 0 4 u 0 4 4-4 4J 4 0 ty) 4 14 0 0 4 m a vw ro 0 z c7 • En e Q) 3 4.J v ul 4 U o w D 4 Ln ro b Q) 0 r-i ul r-I i 4 ro ::j 7 0 4 4-4 W r4 V D N >1 4-J 1--: r- u ul G V V' 0 4a0 0 4-) rn> a rI it 4-I Ca 0 m 0 4-J n c O a c 11 4-7 Qi M o D 4 ro amtn0 4-3 Z U 4 a 0 a 3 r 0 0 m 0 >IC x ro 0 rn 3 '+i 0-Hai0 4 a) 4 Ea 3 w+P 0 r I L4 n rd 7 w Ln r- 0 7 III - ENVIRONMENTAL IMPACT STATEMENT A. The Significant Environmental Effects of The Proposed Project The. Impact Analysis Staff of The Planning Department has made an initial study (see Page ) in response to the submission of the tentative map and zone change applications by the project sponsor. Six factors were identified as having potential signifi- cant effect and are covered in detail as follows. 1. Geotechnical Hazards SETTING The subject site is located within the Puente Hills and is under lain by bedrock of the Puente Formation. This bedrock consisting of silt - stone and sandstone shales, is of -marine origin and dates to the Miocene Age. These shales have been tilted and raised by tectonic uplift, resulting in faulting and folding of the bedding planes in a variety of attitudes. Subsequent erosion has created a pattern of ridges and valleys with alluvial fans in the valley floors. Landslide areas exist on -site as a result of down - slope creep, slumping and erosional forces. Some deeper seated slides exist due to bedding plane failures. One particularly large slide area exists at the northerly end of the site adjacent to Golden Springs Drive. Springs were found in the valley upstream from the intersection of Golden Springs Drive and the 57 Freeway. The source is groundwater that travels within the bedrock strata that underlie adjacent ridges. The Whittier -Elsinore Fault constitutes the greatest earthquake threat. This fault lies four miles south- erly of the project. Historically, the Newport - Inglewood Fault, the San Fernando Fault and the San Jacinto Fault are the ones most likely to cause strong ground motion at the site. The 1933 Long Beach quake probably did not exceed 0.2 g peak acceleration at the site. The 1971 Sylmar quake probably had a peak acceleration of less than 0.1 g at the site. Earthquake Potential at The Site Peak Minimum Maximum Acceleration Distance' Credible a Bedrock from Site Earthquake at the Site Active Fault in Miles) in Richter Magnitude) times- )_ Whittier -Elsinore 4 7 61 Cucamonga 10 6 30 Sierra Madre 11 6z 28 Santa Monica -Raymond Hill 15 7 33 Newport --Inglewood 23 7 19 San Jacinto 25 7h 22 San Andreas 27 81- 28 Palos Verdes 30 7 14 San Fernando 33 6 12 Santa Susana 44 6z 08 E A preliminary geologic investigation of the project has been made by Douglass E. Moran, A Registered Engineering Geologist. His report is included herein as Appendix "A". The following table of potentially active faults and the expected effect at the site of a maximum earthquake has been ex- tracted from Page 17 of Moran°s report. Cut slopes into ridges along Golden Springs Drive and the 57 Freeway. made by highway construction range from 50 feet to 140 feet in height. All are at 1;5:1 slope, except the most southerly which is cut at approximately 4:.1. The major ridge line above the subject property has been cut and flat- tened by the development of residential subdivisions. IMPACTS The project proposes to excavate three million cubic yards. Ridges will be cut and valleys will be filled. Some existing :highway oriented slopes will be lowered and some will be raised by the proposed project. Some -new slopes. ranging up to one hundred feet in heigth, will be cut into ridges along the southeast side of the project. Vegetation will be removed in the area to be graded and -an existing spring will be filled over. It is known and expected, that: -some adverse geologic conditions will be encountered during grading operations. MITIGATION MEASURES A subdrain will.be required to drain off the existing spring water. This drain will extend to the existing downstream cul- vert under Golden Springs Drive. Unconsolidated alluvail soils in valley floors and alluvial fans will be removed to depths determined by a qualified Soils Engineer and replaced with competent material to be compacted in place. Existing cut slopes along the 57 Freeway will be reduced in height. Existing cut slopes along Golden Springs Drive, will be regraded at.flatter angles. 10 Landslides within the area to be graded or in hazardous locations uphill of the proposed development will be removed during grading operations. Cut slopes exposing weak faulted bedrock materials, will receive blanket stabilization fills to prevent surficial erosion and slumping. Subdrains will be installed at the rear of these fills. Cut slopes exposing adverse geology or bedding planes will be cut to flatter angles or construc- ted as compacted fill buttresses to be designed by the Consulting Geologist and Soils Engineers. surface drainage uphill of developed areas is to be channeled into a storm drain system with appur- tenant drainage structures. Storm drains will connect with existing culverts under the 57 Free- way and Golden Springs Drive. 2. Air Quality SETTING The project is within the Pomona -Walnut Valley sector of the Los Angeles Air Basin. The valleys most general climate is night and morning low cloudiness with sunny afternoons with tempera- ture spreads of 250 to 300. Typically, daytime westerly winds of 5 to 15 MPH spread a layer of marine air over the Los Angeles Air Basin. This air layer is frequently trapped by a temperature inversion layer above and pollutants collected in the marine air layer are prevented from dispensing which results in poor air quality over the Los Angeles Basin. The Diamond Bar area is near the downstream end of this Los Angeles'Air Basin and therefore, receives and suffers from pollutants produced westerly of the site. The general nighttime pattern of winds is 3 to 6 MPH, draining downslope out of the north- east. Winter storms are generally out of the north and west. Precipitation occurs mainly during winter and early spring months, with occasional Santa Ana winds which occur in late fall, winter and spring months with blowing hot dry easterly winds. 11 Winter lows are generally above 400 and summer highs frequently exceed 900. The higher temp- eratures are usually associated with low humidity. Air quality is generally determined by the strength of the westerly winds, by the absence or presence of a temperature inversion layer, and its height. A complete Air Quality Impact Analysis prepared by Frank B. Wein, A.I.C.P. is included herein as Appendix B. Annual average concentrations and numbers of days State Standards were exceeding for pollutants monitored by AQMD are shown on Pages 5 and 6 of Appendix B. IMPACTS The project entails the movement of two and three-quarter million yards of earth within a time span of approximately 9 months. Roads within the project will remain unpaved for an additional 3 months during the installation of utilities, sew- ers, storm drains and curbs. Dust emissions during grading operations may approach 1,800 lbs. per day. Dust at a reduced rate will continue to occur during post grading operations, until streets are paved. In addition to on -site emissions, an additional 70 lbs. of vehicle emissions per -day, will be generated by construction workers traveling off -site. This factor will reach 135 lbs. per day during peak per- iods of construction activity. A complete analysis of the projects short-term air quality impacts will be found on Page 7 of Appendix B herein. Long-term air quality impacts are attributable to cn-site consumption of gas and electricity and to vehicle emissions. On -site gas consumption will produce 14 lbs. of -emissions per day, a negligible amount. (See Pages 11 and 12 of Appendix B). Elec- tricity is generated off -site and outside of the local area. Electricity is supplied by Southern California Edison Company. Some of whose generating facilities are within the Los Angeles Air Basin, westerly of the project location. Total emissions from electrical power consumed on -site, are estimated at 673.5 lbs. per day. (See Pages 11 and 13 of Appendix B) . 12 Motor vehicle emissions will produce the most significant long term air quality impacts. A complete traffic study has been made by Kunzman Associates and is included herein as Appendix E. Based on this study, the project will generate 13,740 vehicle trips per day for a total of 113,862 miles per day. (See Page 2 of Appendix E). This traffic will produce approximately 4,956 lbs. of emissions per day, the major factor being carbon monoxide. (See Page 14 of Appendix B). MITIGATION MEASURES Short-term impacts during the project construction period are due largely to dust produced from grading operations, construction traf- fic and equipment. it will be important to maintain dust control by watering during the construction period until streets are paved; slopes are land- scaped, and sprinkler systems are installed. The project grading plan and permit shall specify dust control by watering and shall further specify that work shall stop at any time dust control cannot be maintained by watering. Construction workers should be encouraged to make use of carpooling to minimize the increase in traffic. A stretched out building program will help to minimize construction related impacts. Long-term impacts are due to power plant emissions, 675 lbs, per day), but principally due to motor vehicle emissions. Some Edison generating facili- ties are located in the Los Angeles Air Basin and emissions from these facilities will impact the Pomona -Walnut Valley during adverse weather condi- tions. This would continue to be true, regardless of the project location, as long as it is in the Los Angeles Air Basin and is by these same Edison Facilities. Adherance to Codes and Guideline for thermal insulation will help to reduce energy con- sumption and resulting emissions. 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F.C•. AVE a; r POMONA i WESTC4 INA aO c = 1. 4 ' O> r`n S L.A PUENTE eIle f WALNUT m y< f pn y. E1e W w u u O LE¢ NGTGN COUNTY 194 e5' IAAACIND BAR a Legend s Oab1+ A`' CG, r/ rk RO Tnase ones a•e used ! o SMO. If the route Of an R70 pus ana 1; 824 486 A31 , ; The numpe• on the euis,je lens you V.n,Ch I, ne I] ]harm Ld5 LL O 447 Broken I,,- nd.ca:e mare Inan one R?O r ne' a.:ow.n9 F7 CQUIMA RC 49p mrs mule ROWLANDHEICHTS $aHd>t Freeways G A bus VInq MAT lta} eIa an a a freeway C d.t7 Tna te9nn,nq Y e-, J.ny Fornt al an RTC a,s nnn 0 Thy neg,rr.ry cr en c,ng pain[ c,,,' or an RTC ass un cunng P.Fk FOR CONTINUATION OF ROUTES SSE MID - CITIES GUIDE '°""°" 4a-- BUS ROUTE MAP SOURCE; R.TFDe 4W The namaar cl a trne prew6'Ng servo:. 1nrcUgnaYl [he Cay Tt•e number cI a hne prorra.nq ae•VICIS sunny Peak ru3h nourS an rl An "X- lollow:rg the numpe' mdmales an..press routs 4ne c" t-noes beyond map area QIno.cAlas pernis or Into- st. The inec'meflon presented In MIS arochur[r is suclecl Jo cnarlpe wITJTouI notice. i 14 Trending ridges and canyons or gulleys, dominate the landscape with two small and two medium to large size alluvail fans existing at the low ends of the canyons. The property has 1j mile of front- age along the 57 Freeway and Golden Springs Drive along its northwesterly perimeter with major slopes adjacent to these highways. The southwest end of the Diamond Bar Golf Course lies opposite the north- east end of the subject property. At the southwest end of the project, is a major ridge and thence a canyon which is proposed to be developed as a companion project with approximately 20 single family residences on a 20.6 acre parce. Remains of an old avocado orchard exist on 10 acres that were isolated by construction of the 57 Freeway. No viable trees remain in this area. A biological survey was conducted by Roland D. Quinn, Ph.D., Professor of Biological Sciences at California State Polytechnic University -Pomona. He was aided by two assistants with M.S. Degrees in Ecological Science. Approximately 70 man hours were spent in the field. Two prior EIR Reports over the northerly portion of the property prepared by other biologists were reviewed. Project grading limits were marked in the field and orientation was pro- vided by Bill Richardson & Associates. For the purpose of this report, wildlife and plant communi- ties will be discussed separately. Professor Quinn's complete report is included herein as Appendix "C". Rainfall occurs during winter months followed by a long dry.season with hot summer months. Plant life on the site has been affected by ranching and grazing operations over a period of nearly two hundred years. Wildfires have affected the plant communities and reseeding by man has further influenced these communitites. rC)LDEN NO SCALE t .. FRESH WATER s4t4G q t A 4, IelrIN- en- r 217 Vl— v PLANT COMUNITIES MAP 1 Source: Dr. Ronald Quinn FIGURE 1. PLANT ASSOCIATIONS OF THE PROJECT AREA LEGEND A- DISTURBED GRASSLAND B- TALL SHRUBS C- WALNUT/ OAK WOODLAND D- COASTAL SAGE SCRUB rr E- ROCK OUTCROPPING (DUDLEYA) LOCATION F- APPROXIN. GRADING LIMITS UP REMOVED REMAINING Percent of Percent of Association Association Acreage total Acreage Total Tall Shrub 5.6 11 46.5 89 Walnut/Oak Woodland 43.3 74 15.1 26 TOTAL 126.5 106.35 Dudle a Multicaulis A small succulent plant. Was found on the site generally occuring in asso- ciation with sandstone rock in the northeasterly area of the property. This plant has been listed as a sensitive species by the California Native Plant Society. Sixty of these plants were counted, of which, eighteen will probably be lost due to project grading. The Oak/Walnut and Tall Shrub associations are becoming increasingly scarce in Southern California due to fires and development, although many examples exist in open space areas in the Diamond Bar area and occur in larger areas within the Chino dills, the Firestone Scout Reservation and oil company prop- erties generally north of Carbon Canyon and within parts of Carbon Canyon. The Tall Shrub community takes long periods depending on the severity of the fire damage. While many evidences of fire damage were visable, the Oak/Walnut tree community on the site is generally healthy, although many trees are of smaller size. The Oak/Walnut association covers 58.4 acres or 25% of the property of which 26% will remain after pro- ject grading. The Tall Shrub association covers 52.1 acres or 220 of the total of which 89% will remain after grading. This community represents the great- est fire hazard. A tree count of the oak trees that would be lost due to project development was made by Dr. Quinn and his report will be found at the end of Appendix C . The count reveals that 186 Oak trees of 8" or larger size, will be lost and that this rep- resents two-thirds of the total number of Oak trees present. 17 The disturbed grassland plant community covers the largest area being 39% of the total site of which 74% or 67.1 acres will be lost and 23.65 acres will remain in areas to be left undisturbed. The Coastal Sage Scrub community covers the small- est area, 29.6 acres of which 8.5 acres will be lost. MITAGATION MEASURES Dud_leya__Multic_aulis A sensitive species which will be affected. Approximately 18 of 63 plants will be lost. Of the 18, several plants are on the fringe of a graded area and may be saved. The better spe- cimens are at the higher elevations and will be in the open space area to be deed restricted and thus preserved. In that this plant generally grows in cracks and crevases in the sandstone rock formations, transplanting is not considered feasible. Freshwater Spring The small spring is the only water on the property at present. A residential tract under construction of the adjacent ridge area above the subject project, features a storm drain that empties into the head of'a pulley on the sub- ject property and is going t provide a new source of nuisance water runoff from street areas within that tract. More than 30 acres of existing and proposed slope areas will be watered with sprinkler systems. Parkways and on lot landscaped areas will provide additional water. The net result will pro- vide for more water than has ever existed before on the subject site. The 2 acre plant community asso- ciated with the spring is not unique to the property nor to the Diamond Bar area and is not a significant loss. Tall Shrub Association This plant community rep- resents some heavy brush with related high fire hazards during dry seasons. In that only 11% of this plant association will be removed by the pro- ject development, no mitigating measures to replace this loss are proposed. Oak/Walnut Woodland The loss of 43.3 acres of this plant association is the most and probably only significant loss of plant life due to the proposed project development. The only effective mitigating measure to supplement this loss is to plant new trees. Based on a 40 foot spacing in slope areas and 50 foot spacing in parkways, this project will require the planting of at least one thousand three hundred seventy-five trees. The Coastal Live Oak (Guerous Agrifolia) is commer- cially available and is appropriate for most of the project area (excluding parkways). A great many of these can be Oak trees. Additional trees can be expected as a part of the landscaping of individual lot developments. The Walnuts, (Jug- lans California), are not commercially available. Disturbed Grassland This plant association rep- resents the largest loss in area due to the pro- posed project. One-fourth of this plant community will remain in the undisturbed open space area. In that many areas of this type exist in eastern Los Angeles and adjacent counties, no special miti- gation measures are proposed.- However, planting of slopes, parkways, individual lots will compensate for much of this loss. Coastal Sage Scrub This plant association covers only 13% of the project area, of which 29% or 8.5 acres will be lost. This plant community is in a disturbed condition and not considered representa- tive. Better examples exist nearby, particularly in the Chino Hills. No mitigative measures are proposed. Adjacent slope areas will be planted with shrubs interspersed with trees. Favor will be given to fire retardent materials from the Los Angeles County Engineers' recommendation plant lists. WILDLIFE IMPACTS Five species of reptiles and amphibians were observed on the site and nine more expected to occur are listed as follows: 19 Species of Reptiles, Amphibians, and Mammals Observed and Expected on The Study Site 0 = Observed Directly or By Sign E = Expected REPTILES AND AMPHIBIANS Observed or Common Name Erected K Western Toad E Pacific Treefrog E Western Fence Lizard 0 Side -blotched Lizard 0 Coast Horned Lizard E Western Whiptail E Southern Alligator Lizard E California Legless Lizard E Ringneck Snake E Striped Racer 0 Gopher Snake 0 Common Kingsnake E Pacific Rattlesnake 0 Western Terrestrial Garter Snake E The above are listed together with scientific name and habitat types at Page 36 of Appendix pit Ten species of mannals were found in the project area and another nine expected are listed as follows: GALS Observed or Common Name Expected Common Opossum E Little Brown Bat E Cottontail 0 Brush Rabbit 0 ao , Observed or COMMON NAME Expected California Ground Squirrel 0 Pocket Gopher 0 California Pocket Mouse E Pacific Kangaroo Rat E Harvest Mouse E California Mouse E Brush Mouse e Deer Mouse E Dusky Footed Wood Rat 0 Desert Wood Ray 0 California Meadow Mouse E Gray Fox 0 Coyote 0 Raccoon E Long -Tailed Weasel 0 Striped Skunk E Mule Deer 0 The above are listed together with scientific names and habitat types at Pages 37 and 39 of Appendix "C". A total of forty-seven species of birds were observed on or above the site in Late spring. These are listed as follows and also in Appen- dix "C" beginning at Page 39 with scientific name and prefereed habitat type. BIRD SPECIES LIST Common Name Turkey Vulture Common Bushtitl White-tailed Kite Wrentit Cooper's Hawk House Wren Red-tailed Hawk Mockingbird American Kestrel California Thrasher California Quail Phainopepla Killdeer Loggerhead Shrike Band -tailed Pigeon Starling Mourning Dove Orange -crowned Warbler Roadrunner Wilson's Warbler Great Horned Owl House Sparrow 21 Anna's Hummingbird Common Flicker Nuttall's Woodpecker Western Kingbird Ash -throated Flycatcher Western Flycatcher Western Wood Pewee Tree Swallow Rough -winged Swallow Scrub Jay Common Crow Plain Titmouse Western Meadowlark Brown -headed Cowbird Hooded Oriole Northern Oriole Western Tanager Black -headed Grosbeak Lazuli Bunting House Finch Lesser Goldfinch Rufous -sided Towhee Brown Towhee White -crowned sparrow Song Sparrow In addition to the above observed species, at least an additional twelve species can be ex- pected to be migrant visitors or winter resi- ents. These are listed as follows and on Page 43 of Appendix "C". Rock Dove Hutton's Vireo Poorwill Yellow-rumped Warbler Acorn Woodpecker Brewer's Blackbird Cactus Wren Dark -eye Junco Hermit Thrush Rufous -crowned Sparrow Western Bluebird Chipping Sparrow As seen from the foregoing, birdlife is abundant, smaller mammals are plentiful and reptiles, particularly amphibians, are limited, although rattlesnakes and gopher snakes are plentiful. In that the property has not been grazed by cattle for several years, available food for wildlife is plentiful. It would appear that lack of water on the site is the most limiting factor. Witness the fact that no racoons, skunks, opossum or foxes were observed in the current biological study. Available habitat would seem to be the next most limiting factor. in that 53% of the total site will be graded or regraded, the loss of wildlife habitat and food supplies will be substantial. The 2 acre spring community and all related reptiles and amphibians will be lost. Additionally, numerous small rod- ents and some snakes will be destroyed during grading operations and depending upon the time of yeax in which initial land clearing operations take place, some Bird nests will also be destroyed. 22 ' Loss of 74% of the disturbed grassland plant community represents a significant loss of habitat for many smaller rodent species, a loss of food supply for the prey animals and reptiles that feed on these rodents and is a significant loss of food supply for many birds. Also, 74% of the Walnut/Oak Woodland area will LL be lost and this represents a considerable loss of nesting areas for birds. The edge associa- tion of trees to other plant communities also represents a significant loss to some species. Of the Tall Shrub community, an important habi- tat and food supply area, only 11% is lost. The Coastal Sage Scrub community is of lesser importance and of this plant association 29% is Lost. In that 55% of the total site will be graded, it is reasonable to expect that during the ini- tial construction period, all wildlife on the property will be affected similarly depending on their preferred habitat types. Small rodents will suffer most due to loss of the disturbed grasslands. Prey animals will suffer almost as much due to loss of food supply and habitat. Birds will suffer greatly due to losses in the Oak/Walnut community and seed eating types will be affected by the loss of a major portion of the disturbed grasslands. The project development will in some way affect all forms of wildlife present. Birds and larger mammals will relocate or be squeezed into compe- tition in a smaller area. Some animals will fail to reproduce normally for a period of time and some animals unable to stand the closer proximity to man will relocate to compete for habitat else- where. There will be lesser use of the site by deer for example. MITIGATION ?MEASURES The loss of a major portion of the Oak and Walnut trees will be offset by the planting of approximately 1,375 trees within the project. A great many of these will be the Coastal Live Oak (Quercus Agrifolia). A major slope along- side the 57 Freeway within the state right-of-way now covered with grass will be planted with Live 23 Oaks on a 40 foot spacing. All graded slopes will be planted with trees, shrubs and ground cover. Parkways will be landscaped with trees, grass and ornamental plants. Individual lots will be landscaped as they develope. All landscaped areas will be watered by irriga- tion or sprinkler systems. Nuisance water run- off from residential development above the project, will provide water for wildlife. Guzzlers con- structed in galleys upstream of project development to be fed by water lines from the project sprinkler systems will provide permanent water for wildlife. Most importantly 90 acres will be deed restricted to permanent open space. The fire protection sys- tem provided by the development, should, serve to protect this area from the periodic wildfires that have occured in the past. As trees and landscaping mature, wildlife habitat will improve. Al animals that are on the site now will probably continue to exist, although in reduced numbers. Some animals will particularly benefit from the inclusion of water throughout the site. Toads, frogs and lizards will increase to greater numbers than before. Skunks and opposum will benefit. Rabbits will feed on the grass and landscaping and gophers will continue to provide employment for gardners and others. Small rodents will suffer some permanent reduction in numbers along with the prey animals that feed upon them due to loss of habitat. Rattlesnakes in particular will be reduced in number due to the closer proximity of man. Bird life will increase as trees and landscaping grow to provide habitat, although the species com- position will be altered and in a state of flux until trees mature. Seedeaters will be reduced due to loss of grassland and insect eaters will increase due to landscaping. A great many types will benefit from the increased availability of water. 24 , The loss of the 2 acres associated with the fresh water spring is a permanent loss of habitat for the ringneck snake if present, and represents the only total loss of habitat for any species. While not previously discussed, the project development will also mean a loss of habitat for trap door spiders and taurantulas. Other insect life forms will also be affected, although many will return in greater numbers due to project landscaping and watering. 25 4. Archaeology/Paleontology S'ETT'ING An archaeological survey of the property was made by the Archaeological Re- search Facility, Cal -State, Fullerton. No evidence of artif actual material was found. A records check at U.C.L.A. did not show a record of historic structures, nor previously recorded archaeological sites. A check of the California Inventory of Historic Resources was also negative. The Archaeological Research Facilities report is included herein at Appendix 1,Dfl . IMPACTS The project does not appear to be a Tens Live site. The association of Oak Trees with the fresh water spring suggests that some use of the site may have been made by Indians. MITIGATION MEASURES The project grading plan shall specify that in the event artifactual or paleontological materials are found, work in the affected area shall cease and Cal -State, Fullerton shall be notified immediately. 26 5. Traffic/Access SETTING The subject project fronts along the southeast side of Golden Springs Drive and lies about midway between Grand Avenue on the north- east and Brea Canyon Road on the west. The long axis of the property lies along the easter- ly side of the Orange (57) Freeway at its junction with the Pomona (60) Freeway. Golden Springs Drive, a secondary highway, runs northeasterly to connect with Grand Avenue, a major highway, and thence northeasterly to in- tersect with Diamond Bar Boulevard, a major highway, at its intersection with the Pomona Freeway. Freeway access to the combined 57-60 Freeway in both directions is available at Grand Avenue and on and off ramps for the Pomona Free- way exist at Diamond Bar Boulevard. Golden Springs Drive is the westerly extension of Colima Road, a major highway, with the name change taking place at Brea Canyon Road. Free- way access to the Pomona Freeway east and west- bound is available at Brea Canyon Road, a secondary highway. Access to the 57 Freeway north and southbound, is also available at Pathfinder via Brea Canyon Road. The nearby communitites of Rowland Heights, City of Indus- try, Walnut, Pomona and Diamond Bar are accessable via the aforesaid highways without traversing the freeways. A traffic study for the project has been prepared by Kunzman Associates, a Traffice Engineering and Planning firm and is included herein at Appendix E". This study reflects traffic conditions be- fore and after the proposed project together with recommended mitigating measures. IMPACTS Existing traffic conditions are illus- trated on the following page and in Figure 1 of Appendix "E". All Roadways in the project vicinity are operating within their capacities and all intersections are providing an "A" Level of Service, excepting the cn-off ramps to the 57 Freeway at Pathfinder Road which intersections are providing a "B" Level of Service. 27 The project when fully developed is projected to generate 13,740 vehicle trips per day. This volume of traffic will affect all vicinity roadways, intersections and freeway ramps. The following page illustrates projected traffic conditions after full project development and will also be found in Appendix "E" as Figure 4. Note that the aforesaid cn-off ramps to the 57 Freeway at Pathfinder will still provide a "B" Level of service. All other ramps and inter- sections will continue to rate an "A" Level of Service, except the intersection of the on -off ramps at Brea Canyon Raod on the north side of the Pomona Freeway. This intersection will be reduced to a "B" Level of Service. All vicinity roadways will continue to operate within their capacities, except that the volume of traffic entering and leaving the proposed project would disrupt the flow of traffic on Golden Springs Drive. MITIGATION MEASURES As recommended in the Kunzman Associates Study, Golden Springs Drive is to be widened to provide left turn pockets for both entrance streets into the project. Median islands with concrete curbs to direct the traffic flow are also proposed. The Kunzman Study also recommends signalization of both entrance street intersections to be operational when the project is 60% developed. Two R.T.D. bus lines traverse Golden Springs Drive. This feature has been previously dis- cussed in this EIR together with an R.T.D. route map beginning on Page 13. Since one of these bus lines provides an express service to downtown Las Angeles during rush hours and the other line provides many opportunities for transfers to other bus lines in numerous direc- tions, it is reasonable to assume the project will generate enough riders to warrant at least one bus stop. Bus ridership will reduce the number of vehicle trips projected in the traffic study. Car pooling and company operated vans can further reduce the traffic generated. 28 6. Scenic Qualitv SETTING The subject property fronts along the southeast side of the 57 Freeway, a designated scenic highway, for a distance of four thousand feet. Three major cut slopes, resulting from freeway construction, ranging from 100 to 140 feet in height along with one major uncut ridge dominate the immediate view. one large and two small alluvial fans intervene the slopes and provide vi4ws up hill. The larger fan contains the remains of an old avocado orchard isolated by freeway construction. The property can be viewed by motorists north- bound on the 57 Freeway until the roadway drops down under the ramp to the westbound 60 Freeway; southbound on the 57-60 Freeway and continuing on the southbound ramp to the 57 Freeway; also from.the eastbound 60 to its juncture with the 57 Freeway. A series of photos shown on the following pages were taken from the edge of the freeway roadway at intervals along these routes to demonstrate the views as seen by the freeway motorist and are described as follows: Eastbound 60 (Pomona) Freeway Photo No. 1 was taken at the overpass over Brea Canyon Road. Photo No. 2 was taken at a point opposite the "IN-N--oUT BURGER" sign showing in the prior photo. The lower reaches of the sub- ject property are somewhat obstructed from view by trees, signs, residences and the southbound ramp to the 57 Freeway. As the motorist makes the southbound ramp, the property comes into front view and then to the observers left as your vehicle completes the curve and the views become similar to those seen by traffic southbound on the 57 Freeway. If your vehicle takes the ramp onto the northbound 57-60, the property dis- appears from view over the right shoulder as you traverse the curved ramp. r r n 0 0 a r 50111 0 41 c I-- 04 00 29 Northbound 57 (Orange) Freeway Photo's No. 3 through 7 show the views along this route. The ridge on the skyline in Photo No_ 3 is the southerly limits of the property. This ridge remains untouched by the proposed project and obscures the property from view until you start to pass it. Photo No. 4, was taken opposite this ridge and shows a small alluvial fan with Oak and Walnut trees. A major cut slope runs diagonally across the photo from lower left to upper right. This large slope is 140 feet high. Photo No. 5 was taken opposite this slope and shows the one large alluvial fan just comming into view and another cut slope beyond. Photo No. 6 is taken just past the large slope and shows the large fan area in full view. The re- mains of an old avocado grove adjacent to the freeway is visible. This fan area provides the only significant upslope view into the property from the 57.Freeway. Photo No. 7 was taken at the end of the large fan and shows the cut slopes beyond a small valley intervenes the cut slopes at an elevation 15 feet above the roadway. The 57 Freeway drops down in the -left of this view and the ramp to the 60 Freeway westbound crosses over on a curve. Views of the subject property end at these locations. Southbound 57 and 60 Freeways Photo's No. 8 through 11, illustrate the views for southbound traffic. Photo No. 8 was taken from a location northerly of the property and looks southerly down the combined 57-60 Free- ways. The large slope adjacent to the 57 Freeway ramp and Golden Springs Drive, shows in the lower right area. The large group of trees in the lower center are at the southend of the Diamond Bar Golf Course and tend to obstruct the view of the northerly portion of the property. The ridge shown on the skyline is near the center of the subject site. Photo No. 9 was taken from the northwest side of the 57-60 Freeway at a point opposite the northerly portion of the 30 property. The large slope is at the junction of Golden Springs Drive and the freeways. Golden Springs Drive is below the line of sight. The underpass can be seen at right center of the picture. Photo No. 10 was taken where the northbound 57 to the westbound 60 ramp crosses over the southbound 57, views of the property are mostly slopes. The large fan area and upslope view occurs between photos No. 10 and 11 and can be seen in Photo No. 6. The large cut slope in Photo No. 11 obscures a narrow galley and small fan beyond. The trees on the near skyline are on the large ridge at the southerly limits of the property which is to be left ungraded. During winter rainfall months when the grasses are green, the subject property and most all the undeveloped areas in the Brea Canyon along the 57 Freeway route are particularly attractive for a period of about three months. The remaind- er of the year when the grass is dry, the property provides some visual interest. The tree canopy appears as a dull green, heavy brush areas are generally at the higher elevations with the grass and some low brush predominating the lower eleva- tions. IMPACTS The major negative impact on scenic views will be the proposed fill and resulting slope in the large fan area adjacent to the northbound 57 Freeway near the southerly limits of the project. The proposed fill will be forty feet in height above the roadway and will re- strict the view of.northbound motorists. Southbound motorists views will be affected to a much lesser extent due to their distance away. However, they will also be able to view some portions of buildings to be constructed in this area. One small fan area southerly of this location and one galley and one small fan northerly are also proposed to be filled. Views of these areas range from two to five seconds at free- way speeds. 31 The project itself including future buildings, will be seen from more distant views by traffic eastbound on the 60 Freeway, (see Photos 1 and 2), and southbcund cn the 57 Freeway, (see Photos 8 through 11). Traffic northbound on the 57 will have very limited views of the project due to the close proximety of the freeway slopes. These views will be further restricted by the planting of trees. MITIGATION MEASURES Except for the one large fan, the predominate view along the freeway is of the major cut slopes built by freeway con- struction. The major ridge at the southerly boundary was uncut and will remain uncut by the proposed project. The next slope northerly, is over 140 feet high.. The project will remove the upper 70 feet, leav- ing a 70 foot high slope inside the freeway right of way. The remaining slope is at about 4:1 slope and is to be planted with Coastal Live Oaks on a forty foot spacing. Likewise, the fill slope across the next alluvial fan is to be fully landscaped with trees on forty foot centers to- gether with shrubs and ground cover. The major slope opposite the interchange ramp from the 57 northbound to the 60 westbound, will be reduced in height by some fifty feet by pro- ject grading. A small galley on the northside will be filled some twenty feet and will be fully landscaped. The large slope at the juncture of the 57 Free- way and Golden Springs Drive will also be reduced by sixty feet in height. This slope will also be regraded to a flatter angle and landscaped on the Golden Springs Drive frontage. D" Drive as shown on the tentative map for the project parallels the 57 Freeway and has only one lot at each end that backs onto the freeway. This street sides onto the freeway and parkway trees will provide additional beautification and screening. 32 B, Significant Environmental Effects Which Cannot be Avoided if Th-e Project is Implemented 1. Geotechnical Hazards All geological problems will be eliminated or mitigated by engineering, planning and con- stzuction design, except alteration of land forms. 2. Air Quality On -site natural gas consumption will produce 14 lbs. of emissions per day. Total emissions from electrical power consumed on -site are estimated at 673.5 lbs. per day. Electricity is supplied by Southern California Edison Com- pany, some of whose generating facilities are within the Los Angeles Air Basin, westerly of the project location. Vehicle traffic generat- ed by the project will produce 4,956 lbs. of emissions per day, the major factor being carbon monoxide. 3. Biota A small spring and 2 acres of associated plant community will be eliminated by project grading. The plant community is neither unique to the site or the area. The spring represents the only water on the property presently available to wildlife. Grading operations for the project will denude 125.5 acres or 55% of the total area. A con- siderable number of mature trees will be lost, including 186 California Live Oaks. A corres- ponding amount of wildlife habitat will be lost on a temporary basis and wildlife habitat will be somewhat altered on a permanent basis. Some wildlife will be destroyed during grading operations. Principally small rodents, reptiles and amphibians. Dependent upon the time of year cleaning takes place, some bird nests will be lost. wildlife populations will be disrupted, will be in a state of flux for a number of years and will be permanently altered due to changes in habitat. A detailed discussion of these factors will be found in Section III -A, beginning on Page 18._ 33 Dudleya Multicaulis, a sensitive succulent plant species will be affected. See Page 16 for a discussion of this factor. 4. Archaeology/Paleontology This is not a sensitive site and no appre- ciable impacts are expected. 5. Traffic/Access Traffic generated by this project will impact all vicinity roadways, intersections and free- way ramps. After project development, the roadways will still operate within their capa- cities and all intersections will still provide an "A" Level of Service. On -off ramps to the 57 Freeway at Pathfinder Road will continue to provide a "B" Level of Service. Cn-off ramps on the north side of the 60 Freeway at Brea Canyon Road will be reduced from an "A" Level to a "B" Level of Service. 6. Scenic Highway Aside from future building construction, the loss of the upslope view at the one large alluvial fan is the only significant view lost that cannot be avoided. Principally for mctorists northbound on the 57 Freeway. C. Mitigation Measures Proposed to Minimize The Signifi- cant Effects 1. Geotechnical Hazards All geological problems will be mitigated by engineering design and construction features. The tentative map for this project has under- gone several revisions and the scope of the project has been scaled down to delete areas and slopes where significant geological prob- lems would be encountered. Detailed measures are presented in Section III A. 2. Air Quality Few measures are available to the project sponsors to minimize effects on air quality. Emissions due to construction, can and will be controlled. These measures are discussed in Section III A. Adherence to recommended and required building design and con - struction practices will help to reduce emissions related to the generation of electricity. 34 Vehicle emissions are.by far the most significant factor. The projects location, availability of public transportation and freeway access are all in its favor. The need for office -professional space in the area and for light industrial uses adjacent to the heavier industries, will ultimately be met. Similar space will develop in the air basin and even if developed on a piecemeal basis, the end result will be the same emissions and impacts or possibly.worse. 3. Biota Wildlife and the plant communitites have been discus- sed separately in Section III A including mitigating measures. Some permanent loss of wildlife habitat for some species occurs as a result of project develop- ment.and 186 Live Oak trees will be lost. However, 1,375 trees will be planted in replacement. The Live Oaks will be replaced. The major slopes along the Freeway inside state right of way, will be clanted with Oak trees. Existing slopes along Golden Springs Drive now covered with grass and low brush, will be regraded and planted to trees, shrubs and ground cover. Trees will be planted where none existed before. All landscaped and planted areas will get permanent watering systems. - Wildlife will benefit from the inclusion of water. Watering devises for wildlife will be constructed in gulley bottoms and connected_to the landscape sprinkling system to provide a permanent source of water. At least ninety acres will be deed restricted to permanent open space and a property owners associa- tion will be formed to provide for long term main- tenance of the open space and major landscaped areas. Fire protection will be enhanced to prevent recurring wildfires. 4. Traffic/Access Golden Springs Drive is to be widened. Left turn lanes and a mediam.are to be provided. Sigr_aliza- tion will'be required at both project entrance streets Z--wren the project is 60% complete. At least one bus_ ` stap will be provided on Golden Springs Drive. A plan showing the proposed improvement of Golden Springs Drive is included herein -after. 7'A N396TG PfgaPaSED WIDEN/AI8__ FOR GOL.CeN 610A/N6:9 DRIVE 35 5. Scenic Qualitv As previously stated, the major views along the 57 Freeway, a designated scenic highway, are dominated by the large cut slopes built during freeway construction. All of these slopes will be significantly reduced in height by project development. All new or regraded slopes will receive trees, shrubs, ground cover - and permanent watering systems. The major slope remaining within the freeway right of way, will be planted with approximately 100 Oak trees. This site, as well as other undeveloped areas, is particularly attractive during the winter months when the grass is green. The rest of the year, the property is rather non -descriptive in appear- ance as the colored photographs included in this report attest. The permanent landscaping and watering systems are going to provide green plant material on a year round basis and it is this green that will make the difference in scenic quality. 6. Energy Conservation Measures In that the project proposed provides only the building sites, the options available to the sponsors for energy conservation are limited. Gasoline consumption by vehicle traffic genera- ted by the project, is the greatest energy factor involved. This site is energy conservative as compared to other available sites in the area. It is close to the communities and industries it will serve; it provides an effecient interior street pattern for access and circulation; it fronts on a major street that is presently under utilized; it has almost direct access to two freeways; freeway access in bath directions is adjacent in three locations; access to nearby residential, commercial and indus- trial areas is available via major streets without traversing the freeways. The site is served by two bus routes, one of which provides express service to downtown Los Angeles and is near to a Caltrans Park and Ride lot. 36 D. Alternatives to The Proposed Action The potential for quality commercial -industrial space has not been met and until very recently, almost did not exist. Witness the recent and rapid growth of commercial office and industrial space in adjacent north Orange County areas. La Habra, Brea and Yorba Linda in particular. The subject property is impacted by traffic noise levels from the adjacent 57 and 6C Freeways and is best suited for the use proposed. Alternatives are discussed as follows: 1. Reduction In -Scope f The developable area of this site is greater in length than in width and access is limited to the Golden Springs Drive frontage. A two street pattern is required with intersections on to Golden Springs Drive, otherwise, any development becomes a giant cul-de-sac. Significant reductions in area would have to be in the length dimension in order to retain the two street pattern. The useable areas would still be impacted by the freeway noise. This project has already been reduced in size by one-third from its original concept. Re- ductions were made in consideration of economics, slope banks and geological considerations. Further reductions in scope will render the project economically unfeasible due to the large land development costs. 2. Mixed Residential -Commercial The areas fronting on the upper street are probably sufficiently removed from the freeway to be useable for residential purposes. The two street pattern will result in some commer- cial traffic traversing the residential area. If commercial development is limited to the front portion of the site and residential to the rear, we will be in the position of resi- dential useage adjacent to the 57 Freeway for nearly one-half of the housing. 37 3. Residential Only 53,000.00 plus costs of sale and financing. House and lot will have to market at $200,000.00 plus, in order to carry this lot cost. it is questionable that this kind of market exists at this location. The property could develope at higher residen- tial densities via townhouses, condominiums and apartments. A project of this nature is eco- nomically feasible. There may be some objections to this type of project by the Diamond Bar Commu- nity. 4. Park and Recreation Purposes Sycamore Canyon Park is located one mile northerly on Golden Springs Drive; the Diamond Bar Golf Course is immediately northeast of the site on the opposite side of Golden Springs Drive; Pomona National Golf Course is two miles westerly on Colima Road; Otterbien Recreation Area is seven miles westerly on Colima. All of the foregoing are major recreational facilities in the area. Additional neighborhood parks.also exist westerly of the site. Their is no shortage of park facili- ties in this area. An off -road bike and vehicle vacility is a possibility. 5. Open Space The Diamond Bar community probably has more open spaces interspersed throughout the communi- ty than any other community within a wide area. Retention of property as open space would rep- resent an economic loss to the community, the land owners and the project sponsor. 6. Agricultural Use The generally steep terrain, thin surface soils and lack of water make the property uneconomical for agricultural uses. 38 7. No Project The No Project alternative would only represent a holding action. This is a growing area and pressures for development of this site will continue to build. In that the proposed project is in conformance with the Countv General Plan, the developing Diamond Bar Community Plan and the Diamond Bar Municipal Advisory Committee Plan, it would seem the No Project option would be hard to justify. E. The Growth -Inducing Impact of The Proposed Action The proposed project will have some growth inducing effects. In that the adjacent communities of Walnut, Rowland Heights, City of Industry and West Pomona are all in a growth -development phase. This project will be reflective of and a part of this growth. All public utilities and services are available without additional expansion or construction with the exception of police protection. This area is served by the Industry Sheriff's Station. Continued growth in the Diamond Bar area will necessitate a new police facility in the area. 39 IV. Initial Study - County of Los Angeles, Department of Regional Planning See following six pages, COUNTY OF LOS ANG L S DEPARTMENT OF REGIONAL PLANNING STAFF US4 INITIAL S'"UDY g 5 Staff Member: Case Number. =, L.0 • SP;N A mAs AND Thomas Guide: - - -. rr3 U.S. Quadrangle Sheet : R R i1 Other Map Location:E . 35'A 3- Map/Case Date: r r 7 Applicant/Applicant's R/yepre^ ssentative: U /h / rJ+ Bf / '' _f _ LS . 1 1 r A M n , r1 R a am ? .- l - ! 1 f J r - ' Location: T iu- Description of Project: Environmental Setting: Nr5 arrr S„r_ 1 voFAJ r4l-`.0- f 5 n el T ;4 By Viz [.a,.) a A PF4Trbir.+i cJ•<1 /. ` ou.: •, r-r r - J < ;Evr y yr F- 61Crl.t — oJ, L-f 1c r t 1` i r ( r?T Y c r.rf2 1S 4- General Plan/Community Plan: A/5 . `/A -- AauV1A4_ FAV.5 .Rr ff.r -- _ CQNsr' S Of 0#,4P• 9kALJ 1.isStr.f# aSJ i184Y F 2a _CoYa c- f.*'4 oaCAr,s Cddsrs- a , DE.tJTS, P cEs f REVIEWINr AGENCIES 1. Responsible Agencies Regional Water Quality Control Board %/ ptriers Los Angeles.. Lahontan Coastal Commission 2, Trustee Agencies State Fish and Game 7-1 State -Parks 3. Others i Topanga-Las Virgenes Resource L/ Other Jurisdictions Conservation District Santa Monica Mountains Conservancy National Parks Mulholland Scenic Corridor Citizens' Advisory Committee REGIONAL SIGNIFICANCE J_/ State Clearynghouse Criteria Q Air Quality Water Resources 17 Santa Monica Mountains OTHER PROJECTS IN AREA. SLAG Criteria Project # Description t.s 4 e {r Cr 6 - -/—lip - Formal consultation on Initial Study determination not necessary due to development of previous review criteria with "ncy. J_ Ci] Ca G Q•7 - ENVIRONMEMENTAL o o EXPLANATION FACTOR w, w Gectechnical _ r am-.• , Hazards x o-• -ram 3 a q l.l,.r r...-. f,- Flood Hazard j Fire Hazard o-- 451 Noise Water Quality n Air Qua 11 tY Bicta t.4 mcr. cnocc EWIRONMENTAL FACTOR awn w Archaeological Historical Paleontological EXPL1 'IATlON scenic Qualities Traffic/Access Liquid Waste I '-Y" Education Fire/Sheriff -,c t,Q, •,,- 4a- / r}- rye-` Mery cas Other Services, - Including _ Utilities Other Factors e.g., Energy, Community s- , ruption, e c.) 4- Conditions: Comments• DET= RyTNAT I QN On the Basis of this Initial Study: I find the proposed project will not have a significant effect on the environment, and therefore qualifies for a NEGATIVE, DECLARATION. I find that although the proposed project may have a signifi- cant effect on the environment, there will not be a significant effect -in this case because the mitigation measures described above have been added to the project. Therefore, the project qualifies for a NEGATIVE DECLARATION WITH CONDITIONS. 7 I find the proposed project MAY have a significant effect on the environment, and an ENVIRONMEN'"AL IMPACT REPORT is required. The potential significant effects have been identified above. REVIEWED SY (D, DATE: RE-EVATUATI0N5 40 V. Organizations and Persons Consulted Edmund M. Biederman Walnut Valley Water District 271 S. Brea Canyon Road Walnut CA 91789 Marion Bentley General Telephone Company P.O. Box 2920 Pomona CA 91766 Tom Wilson Southern CA Gas Company P.O. Box 6226 San Bernadino CA 92417 Larry Klock & Bob Martin Southern CA Edison Company 800 W. Cienega San Dimas CA Brian Farris Southern Coast Air Quality Management District 9150 Flair Drive E1 Monte CA 91731 Mr. Mings Los Angeles County Parks & Recreation Street Tree Division 155 W. Washington Boulevard Los Angeles CA 90013 Inspector Ray Gorospe Los Angeles County Fire Department 1320 N. Eastern Avenue Los Angeles CA 90051 Nola Wolf, Librarian Southern CA Rapid Transit District 425 S. Main Street Los Angeles CA 90013 41 Don Ury Diamond Bar Development Corporation 1111 S. Grand Boulevard Diamond Bar CA 91765 State of California Department of Transportation 120 S. Spring Street Los Angeles CA 90012 Mr. Koval, Landscape Architech Mr. Mastro, Traffic Engineer Jim Reed County Sanitation Districts of Los Angeles P.O. Box 4998 Whittier CA 90607 APPENDIX A REPORT OF GEOLOGIC INVESTIGATION TENTATIVE TRACT NO. 39679 DIAMOND BAR, CALIFORNIA BY DOUGLAS E. MORAN, INC. PRELIMINARY REPORT OF GEOLOGIC INVESTIGATION PROPOSED COMMERCIAL AND INDUSTRIAL DEVELOPMENT TENTATIVE TRACT NO. 39679 DIAMOND BAR, CALIFORNIA PREPARED FOR ARCIERO AND SONS, INC. BY DOUGLAS E. MORAN, INC. JOB NO. 80-4 JLLY 27, 19S1 DOUGLAS E. MORAN, INC. 0 TUSTIN. CALIFORNIA T A B L E O F C O N T E N T S PAGE SECTION I INTRODUCTION ............................. II SCOPE OF INVESTIGATION ........................ III SITE DESCRIPTION ............................ 3 1. Topography ..................................... 6 2. Climate ........................................ 6 3. Vegetation ..................................... 4. Rock Exposures ............................ IV REGIONAL GEOLOGIC SETTING .................•••• 9 V LITHOLOGY.......................................... 9 1. Puente Formation (Tp).......................... 2. Surficial Deposits (Qrs, Qsw, Qalc, Qal, Qls)..11 13 VI GEOLOGIC STRUCTURE ................................. VII GROUNDWATER ......................................... VIIl SEISMICITY............... ................ IX PROPOSED DEVELOPMENT .......................... X EFFECTS OF DEVELOPMENT ............................. 19 1. Slope Stability................................ 19 2. Placement of Fill ........................... 21 3. Changes in Surface Drainage.................... 22 23 4. Effect of Groundwater...... .................... S. Effect of Potential Earthquakes................ SUMMARY OF CONCLUSIONS. .................. 25 APPENDICES A List of Aerial Photographs Studied B List of Geologic Maps and Reports Referenced C Geologic Map, Tentative Tract 39679 DOUGLAS E. MORAN. INC. 0 TUSTJN. CALIFORNIA Arciero & Sons, Inc. -1- July 27, 1981 Job No.. 80-4 PRELIMINARY REPORT OF GEOLOGIC INVESTIGATION PROPOSED COMMERCIAL AND INDUSTRIAL DEVELOPMENT TENTATIVE TRACT NO. 39679 DIAMOND BAR, CALIFORNIA I. INTRODUCTION As requested, a limited preliminary investigation of geologic conditions on the subject property has been performed by this office. The purpose of the investigation was to evaluate the geologic conditions on the property and their effect on pro- posed development so that favorable conditions might be utilized to advantage and adverse conditions might be mitigated by design. The investigation was performed in conjunction with an investigation of the foundation soil conditions by S. E. Medall and Associates. This report presents the results of the investigation together with tentative conclusions reached and recommendations made regarding grading of the property. It is intended that this report be complete enough.to serve as a basis for preliminary planning of development and evaluation of environmental im- pacts. II. SCOPE OF INVESTIGATION The investigation that is the subject of this report has con- sisted of: 1) study of available aerial photographs, 2) review of pertinent geologic references, 3) review of data derived from previous geologic investigations, 4) geologic field ex- ploration of the property, and 5) analysis of the data derived. DOUGLAS E. MORAN. INC. • TUSTW CALIFORNIA Arciero & Sons, Inc. - 2r July 27, 1981 Job No.: 80-4 airs of aerial photographs of different ages Stereographic p some of these photo - and scales were studied- In addition, were used in the field as a base for geolog cmappinggraphsisattachedtothisreport A listing of the photographs Appendix A) - logic references reviewed included [3.5. Geolog1 Published g S. Geological Survey Pre - Survey Paper 420 S,• Survey hic map of the Yorba Linda liminary Map 23, and the topogra P complete list of 1954; Quadrangle photo -revised 1972) • A published geologic references revied is presented in Appe ew S. tion, the subject prr Prior to performance of this investigation, ect of a number of is ty and surrounding areas were the ubj Amo. eologic and soil engineering investigations. pendent g portions of the property by these were investigations of P Medall and Associates. glosson and Associates and by S.E. ations were used to aid ir. Data derived from these investigations ect property, pretation of geologic conditions on the subs endix B- The referenced reports and maps are listed in App of geologic c Geologic field exploration included maP Inggeologic features in natural outcrops and tionsexposednasuggestedby topographic exposed by existing road cuts or sugg four anomalies and patterns of vegetation. In addition, s and 14 test pits were excavated to perr ploratory boring The maximw ion of subsurface conditions - directobservatandtest s was 10. Each boring depth of the boring 0 feeteoloaist from thi was entered, exama examined and logged by g office. Arciero & Sons, Inc. -3- July 27, 1981 Job No.: 80-4 The locations of the borings and test pits as well as geologic data obtained from mapping of the property were plotted on the topographic map of the property prepared by Esco L. "Bill" Richardson and Associates. The topographic map serves as the base for the Geologic Map a reduced copy of which is sub- mitted with this report (Appendix C). Geologic cross - sections were drawn to facilitate interpretation of the sub- surface geologic conditions underlying the subject property. III_ SITE DESCRIPTION The subject property is an undeveloped parcel of land (roughly 225 acres) situated on the northwestern edge of the Puente Hills in the community of Diamond Bar. It.is located immedi- ately southeast of Golden Springs Drive and the orange Freeway Interstate 57), roughly one-half mile to the southwest of the former's intersection with Grand Avenue (see Index Map on the following page). The property is bounded by existing and on- going residential development to the southwest and southeast and an undeveloped parcel of land to the northeast. 1. Topography The topography of the property is dominated by narrow ridges and canyons that have been carved into the northwest flank of an asymetric ridgeline that separates Diamond Bar Creek to the northwest) from Brea Canyon (to the southeast). The crests of the ridges descend northwestward at overall gradients of roughly 5 horizontal to 1 vertical, DOUGLAS E. MORAN, INC. + TUSTIN, CALIFORNIA Plate i 4— I N DEX MAP Q: -... its—i - — r a1• - — ...' - rYi v^OMk Gh t .: • •: i: emu: 1n ;..` •,ti.\ „ / Rn ts t • _Ft r.; i•$r.6 .`scat;,'•''.'_',-'••_•.x,.''. J)\ / • • r'w` "' /' I N 17 i ,sue.. ,_`_`.; /./ . `•p -— _- '. /- '- --_ — . s, 71Q. REFERENCE: USGS Topographic Maps, San Dimas and Yorba' Linda Quadrangles. Arciero & Sons, inc. -5- July 27, 1481 Job No.; 80-4 locally steepening to gradients approaching 2 horizontal to 1 vertical along the south- eastern property boundary or flattening to almost horizontal (flatter than 20 horizontal to 1 vertical down portions of the ridge - lines). The crests of the ridges are as much as 150 feet above the bottoms of adjacent stream valleys. The irregularly eroded side slopes are inclined at gradients that are between lh horizontal to 1 vertical and 4 horizontal to 1 vertical. The ends of the ridges were cut off along the northwesterly property boundary during con- struction of Golden Springs Drive and the orange Freeway. The cuts vary from 50-150 feet in height. All except one are at gradients of roughly 1 horizontal to 1 vertical. The exception has been cut to the approximate inclination of bedding in the slope (roughly 15 degrees). Bedrock and soil materials derived from these excavations were used to fill the narrow can- yons between the ridges during construction of the bounding roadways. The major ridgeline above and to the south- east of the subject property has been, for the most part, leveled during development of the area. Level building areas above the sub- ject property were formed by cutting off the tops of the ridges and the crest of the major ridgeline and placing fill, derived from those excavations, into intervening stream valleys. DOUGLAS E. MORAN. INC. 0 TUSTIN, CALIFCRNIA Arciero & sons, Inc. -6- July 27, 1981 Job No.. 80 2. Climate The subject property is located in an arid region. The average annual rainfall in the region is on the order of 10 to 12 inches per year. Most of the rain falls during sporadic storms that generally occur during the winter months (December through March). usually, the amount of rain that occurs in one year is somewhat less than the average annual rainfall. However, occasional "wet" years (years when the amount of rainfall is unusually high) raise the average annual rain- fall. These "wet" years occur roughly once every ten years. Commonly, annual rainfall totals are below the average for a few to several years in succession and are followed by one or two Of these unusually wet years. As a result, stream flow in the area is intermittent and vegetation varies relative to the amount of rainfall. 3. Vegetation During the conduct of this investigation, the surface of the subject property was covered by a moderate to dense growth of vegetation. The types of vegetation included mustard, chaparral, range grasses, and scattered trees principally black walnut and oak). Arciero & Sons, Inc. -7- July 27, 1981 Job No.: 80-4 The mustard and chaparral tend to be mutually exclusive relative to the kind of soils they thrive in. Mustard tends to grow in soils that are very fine grained or clayey. Since the composition of the surficial soils is dependent upon the underlying or parent rock from which they are derived, the predominance of mustard on the higher ground within the property tends to indicate the presence of underlying siltstone or claystone. Chaparral tends to thrive in soils that are granular and well drained. Predominant growth of chaparral in an area generally suggests that sandstone underlies that area. Although trees were scattered throughout the property, it was noted that clumps of trees were present in a few of the stream valleys. Phreatophytic vegetation was commonly found in these areas. This suggests that in these areas soil moisture was more prevalent and at least high enough to support vegetation that requires soil with high water content. 4. Rock Exposures Natural outcrops of the undisturbed bedrock that underlies the subject tract are common, especially along steeply inclined portions of the ridges. Most of the naturally exposed out - crops consist of hard, well cemented sandstone or somewhat silicified siltstone. DOUGLAS E. MORAN. INC. + 7US71N. CALIFORWA Arciere & Sons, Inc. -$- July 27, 1981 Job No.: 80-4 Exposures of silicified siltstone generally were found where the inclination of bedding in the rock was into the respective slope. Exposures of bedrock were also found in the road cuts along Golden Springs Drive and the Orange Freeway, and in old exploratory test u pits excavated by others during previous in- vestigations of the site. IV. REGIONAL GEOLOGIC SETTING The portion of the Puente Hills in which the subject property is located is part of a crustal block that is composed of faulted and locally folded layers of moderately well consoli- dated sediments of Miocene age. These sediments were deposited in roughly horizontal layers on an ancient sea floor that has been estimated to have been at least 1600 feet below the sur- face of the prehistoric sea. They became firm due to gradual consolidation and selective cementation. They were subse- quently tilted and raised by tectonic uplift primarily along the Whittier Fault Zone. Continuing tectonic uplift and corresponding withdrawal of the ancient sea floor resuited in emergence and faulting and fold- ing of the Miocene sediments. Subsequent erosion of the ris- ing Puente Hills produced the existing topography. As early as late Pleistocene, stream courses that drained the Puente Hills cut steep -sided valleys into the uplifted sedi- ments. These valleys were subsequently backfilled by alluvial deposits forming broad, alluviated valley floors. The valley floors were in turn cut by stream channels and then partially backfilled during later stages of erosion and deposition_. DOUGLAS E. MORAN. INC. • TUSTIN, CALIFORNIA Arciero & Sons, Inc. -9- July 27,.1981 Job No.: 80-4 V. LITHOLOGY Bedrock that has been assigned to the Puente formation is ex- posed on or directly underlies the higher ground on the subject property. The rocks are of marine origin and late Miocene age. The Puente formation has been divided into four members, which from oldest. to youngest) are the: La Vida, Soquel, Yorba, and Sycamore Canyon members. Of these, it is probable that portions of the La Vida, Soquel, and Yorba members are present within the limits of the property. However, due to the simi- larity of these units, distinction between them was not made o^ this basis during the course of this investigation. he bedrocc .its are for the most part covered by surficial soils of variable thickness. These surficial deposits con- sist of residual soils, slope wash deposits, alluvial deposits, and landslide debris. 1. Puente Formation (T ) Sedimentary bedrock of the Puente Formation underlies the surface of the higher ground on the subject property. These rocks were exposed in road cuts made into the project- ing ridges, in old test pits, and in natural outcrops. They were also observed in the exploratory borings and test pits. The rocks consist of siltstone and sandstone. They are variably cemented, but having been deeply buried in the prehistoric past, they are firm and well consolidated. Within the limits of the subject property, three rock units were distinguished: a siltstone unit, DOUGLAS E. MORAN. INC. • TUST IN, CALIFORNIA rciero & Sons, Inc. -10- . July 27, 1981 Job No.: 80-4 a sandstone unit, and an interbedded silt - stone and sandstone unit. The contacts be- tween these are generally gradational and somewhat obscured by surficial soils. The siltstone unit consists of siltstone with occasional beds of sandstone. The siltstone is thinly bedded, generally clayey and ex- pansive though occasionally siliceous or sandy in composition. It is light to dark gray in color with occasional rusty staining along bedding planes and fractures. It is relatively weak, exhibiting a tendency to part readily along bedding planes. The oc- casional sandstone beds are two to three inches thick, fine to medium grained, gray to tan with occasional rusty staining, and are friable. Folding and fracturing of these rocks has substantially reduced their strength, especially along axial portions of the folds. The rocks of the sandstone unit consist of sandstone with occasional seams cf siltstone. The sandstone is typically massive, fine to coarse grained, gray to orange -tan with occasional rusty staining, variably cemented, jointed and fractured. where it is well cemented, it tends to be relatively resistant to weathering and is frequently expesed in cliffs and along steeply inclined portions of slopes. The siltstone beds are generally one - eighth to three inches thick, clayey in com- position, and gray to orange -tan in color. DOUGLAS E. MORAN. INC. a TUSTIN, CALIFORNIA Arciero & Sons, Inc. -11- July 27, 1981 Job NO.: 80-4 Within the interbedded siltstone and sand- stone unit, the beds vary in thickness from two inches to eight feet. The siltstone is clayey to sandy though occasionally siliceous and gray to orange -tan in color. The sand- stone is fine to medium grained, silty in composition, occasionally micaceous and generally firm but poorly cemented, 2. Surficial Deposits (Qrs, Qsw, Qalo, Qal, Qls) A mantle of residual soil (Qrs) covers most of the higher ground on the property. Having developed as a result of in -place weathering of the underlying bedrock, it is of similar composition. It is generally porous and loose and poorly consolidated. The residual soils that cover the siltstone unit consist of silty to sandy clays that are dark brown to grayish brown in color and are probably expansive. They are approximately three and one-half to five feet thick along the more steeply inclined surfaces and as much as eight feet thick on the more gently sloping surfaces. The residual soils that cover the sandstone unit consist of clayey sands to sandy clays that are rust -brown to dark tan in color. They are as much as three to four feet thick, thinning on the more steeply in- clined surfaces. Typically, the residual soils grade into the underlying bedrock, with the transition zone to bedrock being one to five feet thick. The zone of transition DOUGLAS E. MORAN, INC. 4 TUSTIN, CALIFORNIA Arciero & Sons, Inc. -12- July 27, 1981 lob No.: 80-4 consists of badly weathered bedrock that is heavily streaked with caliche. y Lying in gradational contact with the resi- dual soils are slope wash deposits (Qsw). These are situated on the gently sloping ground between the valley floors and the steeper slopes that rise above. They are a result of downslope creep, slumping, and erosional transport of residual soils and weathered bedrock from the steeper slopes above. They are of similar composition and are generally loose or porous. Significant quantities of alluvium underlie the valley floors. Published geologic references indicate that two stages of alluvial deposition are present. The older deposits accumulated in valleys that had been cut by late Pleistocene erosion. Typically, these consist of clayey to sandy silts that are grayish brown to reddish brown in color and are expansive. Never having been deeply buried, they are poorly consolidated. The younger alluvial deposits accumulated along the flow lines of active stream channels. These consist of clayey silts to silty clays that are light to dark brown in color. They are loose and porous. The alluvium may be as much as 60 feet deep beneath the broadest portions of the stream valleys. However, the depth and subsurface distribution of these materials was not deter- mined during the course of this investigation. DOUGLAS E. MORAN, INC. TUSTIN, CALIFORNIA Arciero & Sons, Inc. -13- July 27, 1981 Job No.: 80-4 Field inspection and study of aerial photo- graphs indicate the presence of numerous landslides within the subject property. Two general types of landslides were recognized; surficial, failures and bedding plane failures. The surficial failures occurred because the surficial materl,als of which the slopes were composed were weakened by weathering processes, gradually losing sufficient strength to resist failure at the gradients at which they exis t e- . Edding plane failures probably occurred as early as late Pleistocene when erosion of stream channels undercut inclined bedding planes in the rocks. Bedding planes in these rocks are continuous planes of weakness along which down -dip sliding can occur when, they are inclined so as to dip out--of-slope. Typically, landslide areas are underlain by thick mantles of residual soil and disturbed bedrock which are poorly consolidated. .The properties and subsurface geometries of the landslides that were recognized were not determined during the course of this investi- gation. VI. GEOLOGIC STRUCTURE The regional geologic structure is characterized by tilted bed- rock strata that dip gently to the north. Superimposed on this regional pattern are broad warps or folds in the bedding 0OUGLAS E. MORAN, INC. a TUSTIN, CALIFORNIA Arcierc & Sons, Inc. -14- July 27, 1981 Job NO.: 80-4 the axes of which trend northeast -southwest. Within the limits of the subject property, the geologic structure has been con- torted by faulting in the bedrock. Our interpretation of the geologic structure within the subject property, based upon the available data, is illustrated by the Geologic Map that accompanies this report. Within the southwestern portion of the property the bedrock strata dip to the north or northwest at an inclination on the order of to to 25 degrees. Within the central portion of the property, the geologic structure is characterized by a broad syncline the axis of which trends in a general east -west direction. The bedding on the limbs of the syncline steepens away from the axis to inclinations as high as 30 degrees. Superimposed upon the southwesterly limb of the syncline are tight folds or crumpling of the bedding. The discontinuity in geologic structure ob- served between the southwestern and central portions.of the property suggests that a fault or faults separate them. It is likely that the traces of these faults are coincidental with stream valleys that trend southeast to northwest. The northeastern portion of the property is characterized by broad folds in the bedding, the axes of which trend northeast - southwest. Superimposed upon the broadly folded structure are relatively tight folds in the bedding, the axes of which trend northwest -southeast. DOUGLAS E. MORAN, INC. + TUSTIN, CALIFORNIA Arciero & Sons, Inc. -is- July 27-, 1981 Job No.: 80-4 w Faulting and folding of the bedrock strata are probably the consequence of uplift of the Puente Halls that occurred in connection with prehistoric movement of the Whittier Fault. The trace of the Whittier Fault lies about four miles south of the subject property. VII. GROUNDWATER The permeability of the bedrock strata that underlie the higher ground on the subject tract varies with the composition of the rock. Sandstone beds are more permeable than siltstone beds, eater that enters the subsurface infiltrates the bedrock through joints, fractures, and pore spaces and is conducted downslope along the more permeable, inclined strata. The prevailing water table or phreatic surface that develops within the higher ground probably resembles the topographic surface but it is lower and probably more subdued with re- spect to its relief. Of the four exploratory borings excavated during the course of this investigation, free water was ob- served only in Boring 3 although the bedrock tended to become increasingly moist with depth in all of the borings. This indicates that the prevailing phreatic surface within the vicinity of the other borings was deeper than the depth of the bottom of those borings, but may have been higher in the past. Fluctuations in the level of the phreatic surface are attri- butable to both seasonal and yearly fluctuations in rainfall. The phreatic surface is generally high following unusually wet years and low following dry years. DOUGLAS E. MORAN, INC. 0 TUSTIN. CALIFORNIA Arciero & Sons, Inc. -15- July 27,-1981 Job No.: 80-4 Springs were found within the stream valley that projects across Golden Springs Drive just east of that roadway's inter- section with the orange Freeway (as shown on the Geologic Map that is included with this report). The springs indicate that the level of the phreatic surface in adjacent ridgelines is higher than the floor of the stream valley from which they emanate. It is likely that the alluvial deposits that underlie the stream valleys within the subject tract are at least partially saturated. This is because these deposits are typically loose and porous and therefore easily infiltrated by water. However, the degree of saturation of the alluvium was not determined during the course of this investigation. VIII. SEISMICITY The subject property is located in the seismically active southern California region within which earthquakes must be expected to occur. Historically, earthquakes of sufficient magnitude to cause damage in the region have originated on recognized faults of considerable length that have provided evidence of geologically recent displacements. Several such faults are near enough to the subject site to be of concern. These are listed in Table 1 (which follows) together with the distance of the site from each, the maximum credible earth- quake magnitudes estimated for each, and the maximum accelera- tion in bedrock at the site as a result of occurrence of a maximum credible earthquake on each at its nearest approach to the site. Due to its proximity to the subject site, the Whittier -Elsinore fault constitutes the greatest earthquake threat recognized. DOUGL.AS E. MORAN, INC. • TUSTIN, CALIFORNIA Arciero & Sons, Inc. -17- J7aly 27, 1981 Job No.: 80-4 However, the history of seismic activity in the region indi- cates that the Newport -Inglewood Fault, San Fernando Fault, and San Jacinto Fault are the ones most likely to cause strong ground motion at the site. Table 1. Earthquake Potential ,i.t the Site Minimum Maximum Distance Crr=dible from Site Earthquake Active Fault in miles)* in Riche -r_.r Magnitude)** Whittier -Elsinore 4 71, Cucamonga 10 z Sierra Madre 11 62 Santa Monica -Raymond Hill 15 Newport -Inglewood 23 7 San Jacinto 25 71z San Andreas 27 8; Palos Verdes 30 7 San Fernando 33 6, Santa Susana 44 61-, Jennings, 1975 Greensfelder, 1974 Schnabel and Seed, 1973 Peale Acceleration in Bedrock at the Site times g)"** 61 D'o 28 33 19 22 28 14 12 08 Historically, several earthquakes of damaging intensity have occurred along these fault zones. Along the Newport -Inglewood fault zone, the most severe was the rrtsgnitude 6.3 Igo: ,l g Beach earthquake of March 10, 1933. It caused considerable damage DOUGLAS E. MORAN. INC. 0 TUSTIN, CALIFORNIA Arciero & Sons, Inc. -18- July 27, 1981 Job No.: 80-4 to unreinforced structures situated on soft ground near its source. However, its epicenter was located roughly 28 miles from the subject tract and the peak acceleration at the site probably did not exceed 0.2 g. Other earthquakes of consider- able ma4nitude that have occurred near the subject tract include two that occurred along the San Jacinto Fault in 1918 and 1923 of magnitudes 6.8 and 6.25, respectively, and one that occurred along the San Fernando Fault in 1971 of magnitude 6.4. However, the epicenters of these earthquakes were over 30 miles from the subject tract and peak accelerations in the bedrock at the subject tract probably did not exceed .1 g. No appreciable damage to improvements due to earthquakes appears to have been reported within the vicinity of the sub- ject tract. This is probably attributable to the fact that there were few improvements during the time that most of the recorded earthquakes occurred and that the hills on which the subject tract is situated are composed largely of sedimentary bedrock which is relatively firm. Also, the earthquakes that have occurred in southern California were not centered too closely to the subject tract. IX. PROPOSED DEVELOPMENT It is proposed that the subject property be developed as a tract of building sites for industrial or commercial use. Currently proposed plans for development indicate that terraced, level building areas and access roadways will be con- structed by cutting into the upper portions of the ridges and placing fill over the lower portions and in the intervening stream valleys. The level building areas will be constructed at elevations that vary from 649 feet to 810 feet. DOUGLAS E. MORAN, INC. 0 TUSTIN, CALIFORNIA Arciero & Sons, Inc. -19- July 27,, 1981 Job No.: 80-4 Tentative grading plans indicate that as much as 74 feet of fill will be placed over the existing natural surface and that the maximum depth of proposed cuts into the existing surface is roughly 99 feet. Cut slopes will be as much as 110 feet in height at gradients that vary from 1 horizontal to 1 vertical to flatter than 2 horizontal to 1 vertical. Fill slopes will be as much as 103 feet in height at gradients that wary from 1 horizontal to 1 vertical to 2 horizontal to 1 vertical. A portion of a proposed slope that descends to Golden Springs Drive will be constructed by cutting an existing cut slope to a flatter gradient and placing fill over it. This fill -over -cut slope will be as much as 90 feet in height and at a gradient of 2 horizontal to 1 vertical. X. EFFECTS OF DEVELOPMENT Development of the subject property as currently proposea will alter existing environmental conditions. Where changes in the environment are adverse with respect to the subject property and surrounding areas, they must be compensated for by design. Also, adverse conditions which could be imposed upon the pro- pcsed development by the environment must be considered. The following sections of this report give brief descriptions of the environmental conditions or changes in environmental condi- tions which may adversely affect the subject property and surrounding areas and methods that are recommended to compen- sate for these conditions. 1. Slope Stability In general, it can be assumed that slopes within the subject property that are essen- tially natural and have not been altered by grading are relatively stable. However, DOUGLAS E. MORAN, INC. • TUSTIN, CALIFORNIA Arciero & Sens, Inc. -20- July 27,'1981 Job No.: 80-4 it is only necessary that they be marginally stable to resist failure at the gradients at which they exist. Cuts made into these slopes to provide for proposed level building areas and access roadways can render them unstable. Unstable conditions will occur when cut slopes undercut bedding planes or when rocks of relatively low strength are exposed at the finished face of proposed cut slopes. Tentative grading plans indicate that cut slopes as much as 110 feet in height at gradients that vary from 1 horizontal to 1 vertical to flatter than 2 horizontal to 1 vertical will be excavated into.the bed- rock and landslide debris which underlie the higher ground on the subject property. Bedding planes within the rocks, especially the siltstones, are planes of weakness along which parting readily occurs. Where they are inclined so as to dip out of a proposed cut slope, the possibility of down -dip slid- ing along bedding exists. These conditions also exist where cuts will expose landslide debris, particularly where the direction of prior landslide movement is out of slope. Geologic data obtained during our prelimi- nary investigation suggest that the slopes in which these conditions will occur can be stabilized by reconstructing them as com- pacted fill buttresses. For slopes of modest DOUGLAS E. MORAN, INC. . TUSTIN, CALIFORNIA Arciero & Sons, Inc. -21- July 27, 1981 Job No.: 80-4 heights, it may be possible to stabilize them by making the intended cuts at flatter gradi- ents than the inclination of bedding. Also, it is anticipated that some of the cuts will expose intensely faulted and folded bed- rock materials. These materials are general- ly weak and are susceptible to erosion and surficial slumping when they are exposed in the face of a cut slope. Also, intense folding of the rocks may result in bedding planes which locally dip out of the proposed cut slopes. Stabilization of these slopes will entail that they be overcut and replaced by stabilization fills that are of minimum equipment width (about 20 feet). - In order to prevent hydrostatic build-up behind compacted fill buttresses and stabili- zation fills, it is recommended that subdrains be installed at the rear of the excavations. 2. Placement of Fill Review of proposed plans for development in- dicates that artificial fill will be placed over bedrock and surficial soils. Having been deeply buried in the prehistoric past, the bedrock is well consolidated and is con- sidered capable of supporting proposed over- burden loads without settlement occurring as a result. However, surficial deposits residual soil, slope wash deposits, alluvial DOUGLAS E. MORAN, INC. 6 TUS71N, CALIFORNIA Arciero & Sons, Inc. -22- July 27,, 1481 Job No.: 80-4 deposits and landslide debris) have never been deeply buried and are typically not well consolidated. The ability of these deposits to support proposed overburden loads is questionable. Therefore, it is recommended that the surficial deposits be completely removed or adequately tested to confirm that they are capable of supporting proposed overburden loads prior to placement of fill. Also, it is likely that some of the soil materials used for artificial fill will be expansive. The expansive potential of these soils should be determined by appropri- ate testing and considered with regard to design of proposed structures and improve- ments. 3. Changes in Surface Drainage Currently, most of the water that reaches the surface of the subject property is either conducted to intermittent stream valleys, eventually outletting to Diamond Bar Creek, or absorbed by the ground surface. In that the topography of the subject property is generally steep, absorption of water into the ground surface is probably minimal. It is likely that water flow down the stream valley is rather heavy during heavy rains. DOUGLAS E. MORAN, INC. 6 TU5TIN, CALIFORNIA Arciero & Sons, Inc, -23- July 27, 1981 Job No., 80-4 Proposed plans for development indicate that existing stream valleys within the property will be filled to provide for level building areas, thereby obstructing surface flow. During heavy rains water that flows down these stream valleys will empty onto proposed building areas and could cause damage to future.improvements. It is also possible that heavy rains will cause mudflows to occur down these stream valleys. Therefore, it is recommended that appropri- ate drainage devices be installed at the juncture between the stream valleys and the level building areas. They could consist of desilting basins with raised outlets behind the level building areas. The raised outlets would be connected to storm drains which could provide harmless outlets for water. 4. Effect of Groundwater If the phreatic surface of the groundwater table were to rise within 99 feet of the present ground surface (the depth of the deepest proposed cut) then groundwater flow would be obstructed by impermeable fill mate- rials placed during construction of recom- mended buttress and stabilization fills_ This would result in hydrostatic pressures which would decrease the stability of the buttresses and stabilization fills. To pre- vent this from occurring, it is recommended DOUGLAS E. MORAN. INC. • TUSTIN, CALIFORNIA Arciero & Sons, Inc. -24- July 27, 1981 Job No.: 80-4 that subdrains be installed to provide harm- less outlets for groundwater in all buttresses and stabilization fills. Also, fill that is placed over the stream valley that projects across Golden Springs Drive just east of that roadway's intersec- tion with the Orange Freeway will obstruct flow from the springs that emerge within it see Geologic Map). Therefore, it is recom- mended that when fill is placed over this stream valley, a canyon subdrain be installed at the base of the valley to provide a harm- less outlet for water that emanates from these springs. It is likely that other can- yon fill areas also will require subdrainage. 5. Effect of Potential Earthquakes Based upon available data, the maximum credi- ble peak horizontal ground acceleration that the property can be subjected to from an earthquake is .61 g. Therefore, the property may be subjected to strong ground shaking in the event of an occurrence of a maximum credible earthquake. However, ground condi- tions within the property are considered firm and the performance of well built struc- tures of regular shape should be satisfactory. Lurching, liquefaction and landsliding because of ground shaking associated with earthquakes is not anticipated. More specific assessment of this threat is recommended in future, more detailed studies. DOUGLAS E. MORAN, INC. • TUSTIN, CALIFORNIA Arciero & Sons, Inc. -25- X1. SUMMARY OF CONCLUSIONS July 27, 1981 Job No.: 80-4 The subject property is considered suitable for the intended development. It is anticipated that potentially adverse geologic conditions can be avoided or be mitigated by con- ventional methods. The bedrock that underlies the subject property at varying depths is considered suitable for support of fills and struc- tures that may be placed over it. However, surficial deposits Qrs, Qsw, Qal and Q1s) are typically loose and poorly consoli- dated and are generally not capable of supporting increases in overburden load. Therefore, these materials should be com- pletely removed during grading or should be investigated to determine if they are capable of supporting overburden loads that may be imposed upon them. Cut slopes that are excavated into the higher ground on the property will expose siltstone and sandstone of the Puente Formation. where the bedding in these rocks is inclined so as to dip out of slope, the possibility of down -dip sliding along bedding planes exists. Stabilization of slopes that expose these conditions may necessitate removal and recon- struction of the slopes as compacted rill buttresses or cutting the slopes at gradients flatter than the inclination of bedding. Compacted fill buttresses should be designed by the soil engi- neer. Also, cut slopes that expose weathered bedrock, slope wash or landslide deposits will be susceptible to downsicpe erosion and surficial slumping. Stabilization of these slopes may necessitate that they be overcut and replaced by stabilizatior. fills, wedges of compacted fill that are of minimum equipment width. DOUGLAS E. MORAN. INC. . TUSTIN, CALIFORNIA Arciero & Sons, Inc. -26- July 27, 1981 Job No.: 8C-4 Build-up of hydrostatic pressures from groundwater flow behind stabilization fills and compacted fill buttresses should be prevented by installing subdrains at the rear of the excava- tions. Proposed plans for development indicate that structures will be constructed over bedrock materials and artificial fill. Bedrock materials (primarily the clayey siltstones) and artificial fill derived from these materials are generally expansive. The expansion potential of these materials should be determined by appropriate testing and considered in design of structures and associated improvements. It is possible that the property may be subjected to strong ground shaking in the event of occurrence of a maximum credible earthquake. However, ground conditions are considered satis- factory. The performance of well-built structures of regular shape is expected to be adequate. If there are any questions or comments with regard to this report or if we may be of further service, please feel free to call upon us. lw Very truly yours, DOU S E. MORAN, INC. glas M n Engineering Geologist 17 DOUGLAS E. MORAN, INC. • TLJSTIN, CALIFORNIA Arciero & Sons, Inc. A-1 July 27, 1981 Job No.: 80-4 APPENDIX A List of Aerial Photographs Studied Source Date Flown Scale Flight or Photo No. Whittier College 1928 1"=1500' C300:187. 215, and 235 Whittier College 1935 1"=1750' 3666:155, 156 and 157 Whittier College 1939 1"=2000' 5925:130, 131 and 132 Whittier College 1947 1"=1200' 11730:14-141, 14-142 U.S.D.A. 1953 1"=1667' AXJ 9K 106 and 107 Don Reed 1977 1"= 425' 77132:6, 7, 8, 9, 10 & 11 DOUGLAS F. MORAN, INC. . TL,ISTIN, CALiFORNIA Arciero & Sons, Inc. B-1 July 27, 1981 Job No.: 80-4 APPENDIX B List of Geologic Maps and Reports Referenced Geologic References Durham, D. L., and Yerkes, R. F., 1964, Geology and Oils Resources of the Eastern Puente Hills Area, Southern iCalifornia: U.S. Geological Survey Professional Paper 420-B. Greensf elder, Roger W., 1974, Maximum Credible Rock Accelera- tions from Earthquakes in California: California Division of Mines and Geology Map Sheet 23. Hileman, James A., Clarence R. and Nordquist, John M., 1973, Seismicity of the Southern California Region, I January 1932 to 31 December 1972: Seismological Laboratory, California institute of Technology. Jennings, Charles W., 1975, Fault Map of Southern California with Locations of Volcanoes, Thermal Springs and Thermal Wells: California Division of Mines and Geology, Cali- fornia Geologic Data Map Series, Map No. 1. Rogers, Thomas H., 1969, Geologic Map of California, San Bernardino Sheet: California Division of Mines and Geology. Rogers, Thomas H., 1966, Geologic Map of California, Santa Ana Sheet: California Division of Mines aid Geology. U.S. Geological Survey, 1964 (photo revised 1972), Topographic Map of the Yorba Linda Quadrangle. Woodford, A. D. and Others, 1954, Geology of the Los Angeles Basin, California: California Division of Mines and Geology Bulletin 170, Chapter II, Contribution 5. Woodford, A. D., Shelton, J. S. and Moran, T. G., 1944, Geology and Oil Possibilities of Puente and San Jose Hills, California: U. S. Geologic Survey Oil and Gas Investigations, Preliminary Map 23. DOUGLAS E. MORAN, INC. 0 TUSTIN, CALIFORNIA Arciero & Sons, Inc. 3-2 July 27, 1981 Job No.: 80-4 Referenced Reports and Maps July 27, 1961, Geologic Report of Tract 26680 by James E. Slosson. Undated, Geologic Map and data compiled by S. E. Medall and Associates. OUGLAS E. MORAN, INC. • TUSTIN, CALIFORNIA APPENDIX B AIR QUALITY IMPACT ANALYSIS BY FRANK B. WEIN, AICP AIR QUALITY IMPACT ANALYSIS Diamond Bar Industrial -office Park, Tentative Tract No. 39679 June 1981 Prepared by: Frank B. Wein, AICP 1332 Calle Linda San Dimas, California 91773 A. Setting The Diamond Bar area is located in the Los Angeles Basin where the climate is normally pleasant and mild throughout the year. The Pacific Ocean acts as a moderating influence on the climate and the mountains and foothills that mark the inland boundaries of the coastal plain act as a buffer against the extremes of summer'heat and winter cold that occur in the interior. Summers are sunny and dry as the large scale weather patterns allow Pacific storm paths to extend as far south as the Los Angeles area only during late fall, winter, and early spring. Pronounced differences in temperature, humidity, cloudiness, fog, sunshine, and rain occur over fairly short distances on the coastal plain and the adjoining foothills due to local topography and the decreasing marine effect further inland. in general, temperature ranges are least and humidity highest close to the coast, while precipitation increases with elevation on the' -foothills. Diamond Bar lies within an inland valley area. Marine air covers this area most of the year, but air from the interior reaches the coast at times, especially during the fall and winter months. The most characteristic feature of the inland valley's climate is the night and morning low cloudiness and sunny afternoons which prevail during the spring and summer months and occur often during the remainder of the year. The daily temperature range is usually less than 250 in the summer, increasing to approxi- mately 300 in the winter. Hot weather is frequent during the summer with readings exceeding 900. When high tempera- tures do occur, the humidity is almost always low so that discomfort is unusual. Nigthtime temperatures are generally cool, but minimum temperatures average above 400 even in the coldest month (420 in January). Prevailing daytime winds are from the west, but night and early morning breezes 1- Figure 1 r------•—__ V u„ 2. bT ,yJ 1. TYPICAL SUMMER DAYTIME OCEAN WINDS TYPICAL SUMMER NIGHT DRAINAGE WINDS Noon to 7:00 PM) (Midnight to 5:00 AM) Yr• I ~ yam• r i fl I f • '• M J. e`er ' • 1 .>1..e' TYPICAL WINTER DAYTIME OCEAN WINDS TYPICAL WINTER NIGHT DRAINAGE WINDS Noon to 5:00 PM) (Midnight to 7:00 AM x= Project Site These maps snow dominant summer and winter wind patterns in the Los Angeles Basin. For the period of the day shown, the net transport of air onshore usually is greater in the summer, while the net offshore transport as a rule is greater during the winter. Whether there is air movement or air stagnation during the morning and evening hours, before these dominant air flow patterns take effect, is one of the critical factors in determining the smog situation on any given day. are usually light and from the east and northeast. (See Figure 1). Daytime westerly flow is strongest in the summer with the nightime east wind better developed in the winter. Strongest winds are from the west and north and are associated with winter storms. At times during the fall, winter and spring gusty, dry, northeasterly Santa Ana winds flow over Southern California mountains and through passes toward the coast. However, the extremely dry air and dust clouds associated with these winds can be expected several times each year. Precipitation occurs mainly in the cooler months with about 85 percent falling from November through April on the average. The visibility in the Diamond Bar area is frequently restricted by haze, fog, or "smog". Low visibilities are favored by a layer of moist marine air trapped below warm dry air aloft. The zone of contact of the two unlike air masses is called the "temperature inversion", and prevents the water vapor and pollutants in the marine layer from dispersing into the atmosphre (See Figure 2). Light fog occurs at sometime nearly every month, but heavy fog is observed least during the summer while light fog is more common at this time. The generally clear skies, onshore flow, and strong temperature inversion make the late summer a favored time for heavy photochemical smog over the Los Angeles Basin. The persistent westerly winds tend to minimize smog buildup; however, primary contaminants do present a problem. The South Coast Air Quality Management District does not operate an air monitoring station in Diamond Bar. The closest air monitoring stations are located in Pomona, about 5 miles to the east of Diamond Bar, and in La Habra, about 8 miles to the south of Diamond Bar. Table 1 contains pollutant concentrations for 1979, the most recent year for which air quality data are available. As shown in Tables 2A- 3_ 4000, 3000' 20M. 1000' S'.'C Figure Z TYPICAL INVrtZSIONS a FAA SURFACE INVERSION ql G,Q _ F inversiian top V Sv inversion layer inversion base I f I 40OF 5U- t- w i 40W 3000, 2WO' 1 WO' 5FC 40GO` 3OQ0' 2000' 1oOO' SFC R' IpG inversion top tO- IiVVERSiON qF inversion layer _ Y 4. s" ER4mixing heightTr inversion base GR t SQp anon 7nor RnOr- Ft1C,N iNVERSIQN inversion top f inversion base P¢pt 1 inv sre +on layerw 1 r FQ mixing height ' I I or 4jOa F 50C F bLr- i- 7 u- r r, Figure 2 plots air temperature on the X aXls versus altitude on ;he Y axis with diagrams of riplcal inversions: surface - based, low and 1 1gl, inversions. Most of the it oodwints are confined ro the air volume below the base of any mversnan, or in a very shallow iyycr ooar the ground In the case of a surface Inversion. TABLE 1 ANM A.L AVERAGE CONCaITRATIONS 1978 1979 AREA CODE Nr2* S02`" TSP*"" t,02" 502* TSI ' ANGEL.ES COUNTY PEN f PRM u /sn3 Pan up,/m3) 001 Los Angeles CENT 7.6 1.7 89.6 6.4 1.3 94.1 G60 Azusa ESGV 6.0 0.6 101.8 4.2 0.7 101.0 069 Burbank ESFV 8.2 1.1 7.8 1.0 071 a lest L. A. WCO 6.4 1.1 8-. 5 7. 3 0.9 6'0-. 5 072 Lang Beach SOCO 6.6 1.3 6.9 0.9 074 Reseda 4+ FV 5.2 0.5 1 -o7.-4 6.0 0.3 T9--8 075 Ftmona FWA 7.1 1.1 5.9 0.6 076 Lennox St1C0 6.3 0.6 9 6.6 0.8 Z-0 080 Whir -tier SOEA 7.0 1.3 7.3 2.3 081 Newha11 SCRV 3.6 0.9 2.5 0.9 082 Lancaster ANVA 1.7 T.-1 1.7 79.9 083 Pasadena WSGV 8.4 1.5 92.5 6.9 1.1 86.8 084 Lynr mod SCLA 5.4 0.8 1 12. 7 6.1 1.0 103.1 A5 Pico Rivera SSGV 7.5 0.6 113.0 7.2 0.8 1 M- 1; 3176 Anaheim ANAH 4.7 0.4 88.8 5.5 0.6 88.1 3177 1a Habra LA,HB 6.7 0.7 105.4 6.Oh) 0.6 92.8 3185 Costa Mesa COST 2.9 0.4 64.9 3.9 0.4 89.0 3186 El Toro TORO 67.9 71.73188bSanJuanC. SJCA 62.3 3190 Los Alamitos LSAL 0.6 92.9 0.8 87.43191SantaAnaC. SAC21 81.2 81. 1 uVERSIDE COUNTY 4137 Palm Springs PLSP 61.8 0.6 53.8 4139 Indio INN 2.0 88.5 83.5 4144 Riverside RIVR 3.5 0.9 138.2 3.7 0.9 151.6 4150 Banning Bk"M 61.9 77.2 ER 0BWDINOCOUNTY 111 San Bernardino S200 2.7 1.1 94.2 3.5 1.0 111.5 5155 Barstow SAPIS 1.4 70.8 1.5 65.8 5165 Redlands r7L 2.8 83.8 2.1 96.3 5166RialtoChino RL- kL. 82.4 94.8 5173bGIT2.1 132.3 5175 Upland UPL'k 00-7 101.2 97.72D 5176Fontana5184b r . 47 Z:77 1.3 108.6 T.7h) 1.0 116.4 Big Sear BCBE 42.5 5181 Lake Gregor,? L.KG2 42.6 5 5185C Mario Airport CLNTR 77.6 3 5190 Victorville d 29 VCVL 63.2 77.9 5191 Palms T`FS 53.9 51.1 5192eTronaTRON98.2 11 1 .7 a. Station tans relocated and nu,.iber changed to 086 effective 8-1-78. b. Station closed eugust 31, 78 f. Station dosed Sept. 31, 80 c. Station closed May 1 , 78 g. Less than 12 7ronr-Lz d. Station opened Tune 73 h. Eleven Months of Data e. Station closed Tine 78 Annual Arirl etic Mean Anrnjal Gec etric `lean 5_ TABLE 2A NUMBER OF DAYS STATE STANMARDS WERE EXCEEDED AND A.NtdUAL FAXIMUM HOURLY AVERAGES I979 Station No. Location LOS ANGELES COUNTY CARBCN SULFUR d) TP iN WaE lunczxc) DlCxrr. DIC= Days a) Max. b) Ceys yax_ Days Max. Day: '-A. Coda 001 Las Angeles CENT 114 0.34 4 21 0 036 14 0.47 060 Azusa ESCV 178 0.45 0 U 0 023 4 0.40 069 Burbank ESFV 137 0.39 36 27 0 031 27 0.35 072 Long Beach SOCO 31 0.2I 7 20 0 042 22 0.47 074 Reseda WSFV 146 0.33 15 23 0 014 6 0,31 075 Pomana PWVA 167 0.35 0 14 0 027 6 0.34 076 Lennox SWCO 17 0.19 35 27 0 035 1.3 0.38 080 Whittier SOFA 80* 0.32* 5* 20* 4* 064* ICiA 0.37* 081 Newhall SCRV 177 0.32 0 11 0 031 2 0.29 082 Lancaster** A2iVA 80 0,20 0 15 NM W 0 0.10 083 Pasadena WSGV 191 0.44 1 17 0 025 14 0.36 084 Lynwood SCLA 52 0.29 38 30 1 051 12 0.37 085 Pico Rivera SSGV 160 0.39 7 16 0 025 13 0.41 086 West L.A. NWCO 90 0.26 J8 24 0 027 42 0,46 ORANGE COULIM 3176 Anaheim ANAH 61 0.33 14 19 0 019 8 0,33 3177 La Habra LARB 112 0.38 2 20 0 035 0 0.24 3185 Costa Mesa COST 26 0.21 5 21 0 018 4 0.29 3186 El Toro TORO 57 0.32 W W 0 022 N<i q' i 3190 Las Alamitos LSAL 50 0,26 hit W 0 038 Mi NK 3191 Santa Ana C. SACN 95 0.39 NM W 0 005 NM W RIVERSIDE COUNTY 4137 Pales Springs** PLSP 1L2 0.24 0 5 0* 022* 01 1).LG 4139 India** INti0 45 0.21 0* 11* 0* 027* 0* 0.09';. 4140 Pradc Park PRPK 160 0.33 0 9 MS M x W. 4144 Riverside RIVR 186 0.34 0 10 0 030 0 0.20 4149 Perris PERT 151 0.25 0 7 W W W till 4150 Banning** BANN 1173 0.27 0 5 W W W, i4ll SAN BERNARDiNO COUNTY 5151 San Bernardino SNBD 164 0.34 0 10 0 035 0 0.23 5155 Barstow BARS 32 0.16 0 12 NK W 0 0.16 5165 Redlands REDL 173 0.34 0 9 W tit 0 1.19 5174 Upland UPLA 163 0.37 0 11 0 033 1 0.30 5176 Fontana FONT 197 0-42 0 20 0 039 0 0. LfS 5181 Lake cregary LKrR 166 0.40 0 12 fim tit NA R1 5190 Vicccrville** VCVL 90 0.21 0 8 IN W. 0 1.13 5191 29 Palms** TNPS 46 0,13 0 8 W W, Rfi V. 5192 Trona** TRON 6 0.12 0 12 V M cr* 0.061,' a) DAYS -number of days exceeding state standard for indicated pol.lucant. b) MAX -single highest 1-hour (for S02 24-hour) average or the year ir% parts per million. c) All exceedances and maxima are of the 12-hour scandar:l The 1-hour standard was not exceeded. d) All exceedances and maxima are of the 2=,-hour standard- The 1-hour standard was not exceeded. Less than 12-months data. t Southeasc Desert Air Basin stations. ill achers in So ac'h Coast Air r3asir;. JM - noc measured 6- 2D, Air Quality Standards for each pollutant (except hydrogen sulfide) were exceeded in 1979. B. Impact 1. Short-term Impacts: The construction phase of the project will produce two sources of air pollutant emissions. Exhaust emissions, including diesel odors from construction and grading equipment, and dust generated as a result of earth movement and equipment traffic over temporary roads. Based on field measurements of dust emissions from industrial park construction projects an approximate emission factor for dust emissions has been determined by the U.S. Environmental Protection Agency as equal to 80 lbs. per acre per day of activity. The proposed project encompasses 233 acres of which 74 will be developed and graded. Dust emissions from grading may approach 1,900 lbs. per day. The impact of fill will also contribute to dust generation. Dust emissions may also occur during building construction due to truck traffic on dust - laden roads. The dust emissions may cause a short-term nuisance to persons who reside and work in the vicinity of the project. The project engineer indicates that the proposed industrial park will involve up to 12 months for grading, with a probable maximum of 50 construction workers on -site per day. Construction of the industrial park will occur in several phases over a five year period (1982-1987), with a probable maximum of 100 workers on -site per day. Assuming that each worker travels 20 miles per day (home -work -home), the construc- tion and grading will generate 3,000 vehicle -miles travelled per day, resulting in the following maximum daily emissions for the proposed industrial park (based on 1980 emission factors): Carbon Monoxide 111.0 pounds/day Nitrogen Oxides 12.6 pounds/day Sulfur Oxides 0.75 pounds/day Particulates 2.25 pounds/day Hydrocarbons 7.2 pounds/day 7- Table 2E NUMBER OF DAYS STATE STANDARDS WIRE EXCEEDED A';0 ANNUAL MAXIMr,,Tt DAILY/'(r,tiTHLY AVERAGES 1979 5P SuUAILE LFAD Mo. of Sys a) Max.b) Days Mix.6) Nrxtrh48 1ax c) S yslingd)) Station No. Location Cede S ANGFLFS COUNTY 001. Los Angeles CF:,•i' 31. 267 2 29.7 6 2.82 61 n60 Azusa ESC,V 35 237 0 24.5 1 1.43 b0 059 burt,r.n1•: ESFV TV tV Mt tit 141-1 CM w 072 Ler.g Beach SOCO LT, M1 nT Ptt M-1 dM W 07r. Reseda WSFV 23 730 0 22.9 3 224 60 G_ 5 Pcmona FlyVA 614 tali t1M 1M W iM w 076 Lennux SWCO 21 206 3 36.1 7 3.91 60 080 Whittier SCEA Qi 11 S t:-t IMPt R-I w G81 ewha7l Sc-,W s1 tN' kv. 1144 MM W w 082 Lancaster*'* AVVA 22 339 0 14.4 0 I.13 58 083 Pasadena 5C;V 27 193 1 26.4 5 2.54 59 084 Lynvaod SC -LA 32 252 5 28- 1 5 3.67 61 085 Pico Rivera SSGV 36 417 3 30.6 4 2.24 61 086 WesC L.A- r,wc0 7 L54 0 23.5 2 2.17 61 Ow:GE CODUTY 3176 Anaheim MAH 25 301 0 24.4 2 1.90 60 3177 La Habra LAR B 30 300 2 26.2 2 1.89 60 3L85 Costa Mosa COST 76 252 0 24.2 3 1.90 61 3186 El Toro TORO 13 219 0 21.5 0 0.12 61 3190 Los Alamitos LSAL 26 327 26-6 3 2.71 61 319.1 Santa Ana C, SACN 25 247 0 23. i 0 1,20 61 RIVERSIDE COUL'ITY 4137 Palw Springs** PLSP 4 188 0 Uo 0 0.44 59 4139 1n.dio** INDO 19 211 0 13.9 0 0.52 57 4140 Prado Park PRFK Mi w t+!~1 w tat 11-1 W, 4144 Riverside FIVR 52 374 3 28.1 0 1.30 61 4149 Ferris PERI Ntt N1 tit tat W W i-M 415C Banning** B,IN 28 193 0 20.0 0 G.61 61 SAN BERNAl',01NO COUNTY 5151 San Bernardino 5MBD 36 290 5 31.7 1 1.49 61 5155 Barstow BARS 9 308 1 27.0 0 0.45 61 5165 Redlnnds RF.DL 33 242 0 23.7 0 0.82 55 5L74 Upland UPLA 25* 256, 32.0 O,a 1.43 45 5176 Fonr;in i FONT a) 320 8 32.3 0 1.20 60 5181 Lake (,reP,ory r,(,R 9 L32 0 13.9 C 0.48 59 1'0 VictnrVi 11ek* l'CC'1, 23 358 0 13.0 0 0.49 61 SI 1 29 Pnlrts** 7NPS 2 1.37 0 9.4 0 0.19 59 i192 7ror.ri* TRON 25: 3621: 39.3-; 0,; 0.29 47 a) NUr.:her uC days/mnnchs viol.-,ting state standard Inc indicaced pollutant. Singi(! highest :'%-hour .Ive'ac-e OF the year in C) Single highe,,t r^c)nrhl v .iverar,e of the year ill erg/m d) Plensuremencs .ire wirmally male on every sixth day. Less than 12 months Baca. SauchA'",r iJe;erc Air Rasin stntinns. All others in South Coast AL- 3astn. N(1 - not 8- TABLE 2C OZONE NUMBER OF DAYS EPI!;ODE LEVELS WERE REACHED IN 1979 WITH COMPARISON TO L978 Station No, Lacstion LOS ANGELES COUNTY 001 Los Angeles 060 Azusa 069 Burbank 072 Long Beach 074 Reseda 075 Pomona 076 Lannox 080 Whittier 091 Newhall 082 Lancaster** 083 Pasadena 084 Lynwood 085 Pico Rivera 086 West L.A. ORANGE COUNTY STAGE 1 STAGE 2 Chourly average z 0.20 ppm)(hourly average a 0.35 ppm) 1978 1979 1978 1979 Code CEN'L' L6 14 0 0 ESGV 76 71 5 10 ESFV 30 26 0 2 SOCO 0 1 0 0 WSFV 16 24 0 0 WVA 72 57 9 3 SWCO 2 0 0 0 SOFA 18 16 1 0 SCRV 45 59 0 0 ANVA 5 1 0 0 WSGV 85 78 8 11 SCLA 0 6 O 0 SSGV 48 38 5 3 NWCO 10 7 0 0 3176 Anaheim ANAH 3177 La Habra LAHB 31a5 Costa Mesa COST 3186 E1 'Toro TORO 3190 Los Alamitos LSAL 3191 Santa Ana C. SACN RIVERSIDE COUNTY 4137 Palm Springs** PLSP 4139 Indio** INDO 4140 Prado Park PRPK 4144 Riverside RIVR 4141 Perris PERI 4150 Banning** HANK SAN BERNAUINO COUNTY 5151 San Bernardino SNBD 5155 Barstow BARS 3165 Redlands REAL 5174 Upland UPLA 5176 Fontana FONT 5181 Lake Gregory LKGR 5190 Victorvilla** VCVL 5191 29 FaLss** TNPS 5192 Trona** TRON Less than 12 months da[a. Southeast Desert Air Basin scacicna 13 5 0 0 24 21 1 1 3 1 0 0 10 6 0 0 5 2 0 0 9 14 0 z 3 3 0 0 0 1 0 0 34 24 2 0 62 55 2 0 38 26 0 0 22 22 0 0 72 62 1 0 0 0 0 0 64 57 2 0 68 59 2 2 98 95 Ll 9 73 80 0 3 1 3 0 0 0* 0* 0* 0* 0 0 0 0 All others in South Coast Air Basin, TABLE 20 NU4BER OF DAYS NOT'MEETING FEDERAL STANDARD 1979 Station No. Location LOS ANGELUS COUNTY Code 001 Los Angeles CENT 62 20 0 1 2 060 Azusa ESGV 149 0 0 0 0 069 Burbank ESFV 92 57 0 N11 NM 072 Long Beach SOCO 11 21 0 NM NM n". Reseda WSFV 103 32 0 0 1 07 Pomona PWVA 1Z6 2 0 NM NM Q'r6 Lennox SWCO 7 54 0 0 2 80 Whittier SOFA 47 19 0 NM NM 81 Newhall SCRV+0 0 0 NM i24 C32 Lancaster** ANVA 40 0 NM 2 0 033 Pasadena WSGV 150 25 0 0 1 084 Lynwood SCL1 26 70 a 0 0 1 2 2 085 Pico Rivera SSGV 110 26 086 Nest L.A. NWCO 4 33 0 0 1 ORANGE COUNTY 3176 Anaheim ANAH 27 35 0 1 1 1 3177 La Habra LAHB 62 23 0 1 3185 Costa Mesa COST 1.6 18 0 0 0 3136 E1 Toro TORO 4 NM 0 0 I 0 1 3190 Los Alamitos LSAL iR N11 0 0 0 3191 Santa Ana C. SACN 47 NM 0 RIVERSIr)E COUNTY 4137 Palm Spprings** PLSP 49 0 0 0 0 4139 India* INDO 16* 0* 0 0 0 4140 Prado Park PRPK 114 0 RM NM 4144 Riverside RIVR 151 0 0 11 0 414,9 Perris PER! 118 0 NM NM NM 4150 Banning** BANN 84 0 NM 0 0 SAN BERNAR.DINO COUNTY 5151 San Bernardino SNBD 140 0 0 2 0 5155 Barstow BARS 5 1 NM 1 0 0 0 5165 Redlands REDL 139 0 NM 5174 Upland UPLA 135 0 0 0 0 5176 Fontana FONT 164 5 5181 Lake Greggory LKGR 139 0 NM 0 0 5190 Victorville** VCVL 31 0 N,'; 1 0 5191 29 Palms** TNPS 6 0 Nri 0 0 5192 Trana** IRON 0 K`i 0 a) Based on number of days 0, > 0.12 PPM. 1-hour average. b) Based an number of days CO > 9 npm, 3-hoo average The 1-hour zvernge was not ex--.-ded.) cl Based -on number of days SO, > 0.14 ppm, 24-hour average d) Based on number of days TSP > 260 vg/m', 24-hour average. e) Based on number of quarters Pb 1.5 ug/m quarterly average. Less than 12 months data. Southeast Desert Air Basin stationn ;L athers in South Coast. Air 3astn. LTM - not moasuruJ 10- 2.a. Long -Term Impacts: The proposed industrial park will result in two types of long-term air quality impacts: vehicle emissions, a result of cars travelling to and from the proposed development; and stationary emissions, a result of electrical generation (off -site), natural gas consumption on -site). 2.b. Stationary Stationary emissions on -site will be generated primarily by those activities which consume natural gas on -site, i.e., space heating and water heating. The gas consumed for these uses has been estimated as 103,000 cubic feet per week -day. The calculated emissions are presented in Table 3A. The contribution of project emissions to the total emissions for the source receptor area in which the site is located is negligible. The stationary emissions resulting from the increase in electrical energy demand will not produce emissions on - site but rather at electric generating plants located through- out the electrical generating network. The emissions from the generation of electricity for this project are presented in Table 3B, assuming an electrical energy demand of 62,700 kilowatt hours (KWH) per day. 2.c. Mobile An estimate of the total motor vehicle emissions generated by traffic associated with the proposed project is shown in Table 4, assuming project traffic to be 13,740 vehicle trips per day and a total vehicle miles travelled of 113,862. C. Mitigation Measures Measures to reduce project -related vehicular emissions relate to the overall number of vehicle -miles travelled that are generated by use of the industrial buildings. The follcw- TABLE 3A PROJECT EMISSIONS FROM USE OF NATURAL GAS (ON -SITE) Emission Factor (a) ibs/1000 Emissions Pollutant Cubic Feet Lbs/Da Carbon Monoxide NEGL NEGL Total hydro -- Carbons NEGL NEGL Nitrogen Oxides 0.116 11.9 Sulfur Oxides NEGL NEGL Particu- lates 0.018 1.9 Notes a) Air Quality Handbook for Environmental Impact Repo.rl' s, South Coast Air Quality Management District, Februit...7 1977. 17_ TABLE 3B PROJECT EMISSIONS FROM GENERATION OF ELECTRICAL POWER (OFF -SITE) Emission Factor Emissions Pollutant Lbs/1000 KWH (a) Lbs/Ba Carbon Monoxide 0.2 11.2 Total. Hydro- carbons 0.18 10.1 Nitrogen Oxides 2.3 129.3 Sulfur Oxides 5.3 297.9 Particu- lates 0.401 225 Notes: a) Air Quality Handbook for Environmental Impact Reports, South Coast Air Quality Management District, February 1977. 13- TABLE 4 ESTIMATED MOTOR VEHICLE EMISSIONS ASSOCIATED WITH. PROPOSED PROJECT Total Area Emission Vehicular Percent Factor (a) Emissions Emissions of Area Pollutant Grams/Mile Lbs/Da Lbs/Da (b) Emissions Carbon Monoxide 14.8 3,712 278,410.4 1.3 Total Hydro - Carbons 1.4 351 29,049.3 1.2 Nitrogen Oxides 1.9 765 41,839.5 1.7 Sulfur Oxides 0.2 50 1,724.1 2.9 Particu- lates 0.31 78 4,848.4 1.6 Notes: a) Air Quality Handbook for Environmental Impact Reports, South Coast Aix Quality Management District, 1980. 1988 Composite Emission Factor for 95% Light Duty Vehicles, 5% Heavy Duty Vehicles. b) Average Emissions for the Year 1976; SCAQMS for the Pomona -Walnut Source -Receptor Area. 14- ing measures are suggested to the County as conditions of approval of the proposed industrial park. promote ride -sharing, i-e., car-pools, vanpools, etc., among workers; this will have the potential to reduce daily commuter traffic, and on -site parking demand; and promote use of public buses and encourage major tenants to provide monthly bus passes or other incentives to employees as employee benefits. These measures will reduce potential long-term im- pacts to less than significant levels. i.ng: normal wetting of the project site during grading and encourage contractors to promote car-pooling/ ride -sharing among construction workers. other mitigation measures available include the follow- limit the commercial, light and limited manufacturing uses to those with minimal emissions of particulates, nitrogen dioxide, hydrocarbons, carbon monoxide, and/or other pollutants; those uses that are known to cause air pollution should be required to have all the appropriate air pollution equipment necessary for abatement; and implement the energy conservation measures; a reduction in energy consumption should result in lower pollution emissions. 1s- au; "•a''t A r • n s '• ::': :: - ;t: ra . x4 -? a 7 ., F ii _ t• c - •J -'s, L s ,: t fT• '+-i Y •.? t ' . a .4N `•+ 3 .. aLir- 3'' A _ '-a' r .:ti v , r -< ,'` !a x rr r .7+ '" ' i''`wM-r• F•} Cfs <a„' 1 Ss, S ? +.{ a - r. r -r i i 'wy+ a •rl r6 7rr,Y <' ,,.{ Y . r, Fe'. -y .'.,>• •.;: [t.l.'..a'.. . i•-f••'.yr. to G s' iY l3z .v. ..,e •4.'. «.,'"`.._. i :tx.. w• C.rR.tath'-+s`x":i•;i ^e1„M, ."`.-`i:-i s __ r .. yy _ 1 ,i^ g Y. d^. - _ - -$ r•., =-w:A F. a •r t av v CJ•i Y'` •ray, rti —rra "a=1.5 ic++•l- •• u,,`y,i? viF Yc, ' i wi'- ; v. _ + Y . , }• ' - - ` ` s k3'''' 1 1" 1•' ;:'i. •• w+='1 ' ' `" +4° i-- r- k v.. - * f"'h. !'' `; - ., 4 rid u•.r. r--}r { iR,r, O ft A"' c.tE'[r •'r ^ A. 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' R '' : k r. :yt .- ry [` : w s i ts.Y - ','+,•f r t •, a y 1'h , ° lk; f. iS - r7 Y '1 • r :rJ'•- a r _ - ? y, iup. '7• .it __t33'ti`e ., - - rr r t - r 4 a N J. r ;,. •r„ _ d t $5 "t ! a'. 4rj -r. ' 4'F 'd,+:, # r f Cz- .,+ +w. ti. g X s. ,, s,,,, h ,r: y f y , s s ` Ys`• s' f '[ b i, "ro p,, y .''n•H. r rr , } . ia-i.' f?.-''?r'.'i+',+ t.,j,_i 4':t.y_•L {.t r's._x•, -s'+`. WA. M1•ti'-_1 r'ra=,:},7'&aF.ss,j"•`ay a-. _'.., •,- BIOLOGICAL SURVEY OF TENTATIVE TRACT NO. 39679 Prepared for. Bill Richardson & Associates By• Ronald D. Quinn, Ph.D. Professor of Biological Sciences June, 1981 TABLE OF CONTENTS Page I. INTRODUCTION ................................... 1-3 II. PLANTS ......................................... 4 A. Methods and Materials ...................... 4 S. Plant Associations ......................... 5 1. Disturbed Grassland .................... 6 2. Coastal Sage Scrub ..................... 6-7 3. Tall Shrub ............................ 8 4. Walnut/Oak Woodland .................... 8-9 5. Rock Outcrops ........................... 10 6. Freshwater Spring ...................... 10 C. Project Impacts ............................ 11 1II. MAMMALS, REPTILES, AND AMPHIBIANS .............. 12 A. Methods .......................... ......... 12 B. Wildlife Habitat and Species ............... 12 1. Disturbed Grassland .................... 13 2. Coastal Sage Scrub ................... 13 3. Walnut/Oak Woodland ........;o.......... 14 4. Freshwater Spring ................... — 14 5. Tall Shrub ............................. 14 C. Project Impacts ............................ 15-16 IV. BIRDS 17 A. Methods .................................... 17 B. Habitat Use ................................ 18 1. General ................................ 13 2. Disturbed Grassland .................. 19 3. Walnut/Oak Woodland .................. 19 4. Walnut/Oak Edge ........................ 20 5. Coastal Sage Scrub ..................... 21 6. Tall Shrub ......................... — - 21 C. Project Impacts ............................ 21 1. General ................................ 21 2. Disturbed Grassland .................... 22 3. Walnut/Oak Woodland .................... 22 4. Coastal Sage Scrub ..................... 23 C. Tall Shrub ............................. 23 LIST OF TABLES AND FIGURES Page Table1........................................... 24-33 Table2........................................... 34 Table3........................................... 35 Table4........................................... 36-38 Table5........................................... 39-42 Table6........................................... 43 Figure1.......................................... 44 INTRODUCTION The project area encompasses 230 acres of gently rollii_, to steeply sloping (approximately 40 percent slope) terrai, in the western portion of the community of Diamond Bar, located in eastern Los Angeles County. This area is bound - by State Routes 57 and 60 to the west and southwest, Golden Springs Drive to the west and northwest, and residential development to the north and east. Geographically, the area is part of a range of hills contiguous with the Puente and Whittier Hills to the west. The long axis of this portion the range extents approximately southwest and northeast- Elevation varies from 620 to 1,040 feet A.S.L. The site is on the north side of a long east -west ridge, with this northerly slope dissected by several north -south canyons ridges. The topography creates varying site conditions whI ch support several types of plant communities. Canyons and ridges are the most natural corridors for the movement of larger terrestrial animals from one place to another. These slopes and ridges run directly into extensive urban developments and, therefore, the site has little value as a migration corridor for animals. Additionally, extensive encroachment by urban and industrial development and major roadways has isolated these plant and animal communities except birds). This isolation severely,limits movements between these animal communities and nearby communities common to the larger adjacent hills. 2 This region of southern California contains draught tolerant plant species and historically has experienced periodic disturbances by fire. Rainfall occurs primarily during the winter months, followed by a long season of hot and dry weather. It is during this dry period that the vegetation is particularly susceptible to wildfire. The adaptations'of some plant species allow for their recovery after the fire but other species, such as oak and walnut trees, are stressed by frequent fires. The communities containing these tree species require relatively long periods of time between fires for the trees to become well established. Use of these hills by man for the past two centuries has increased the relative frequency of fires such that the types of vegetation which are fire tolerant have become much more widely established than the natural mosaic of types that undoubtedly occurred prior to this time. Fire has favored such vegetation types as grasslands and coastal sage scrub. Other disturbances have contributed to the ecological changes this area has undergone over the past 200 years. Cattle grazing on the grassy slopes has probably been intense for close to 2CO years. Grazing alters the plant communities by removing the more succulent and palatable species and encouraging the widespread increase in the inedible plants. The success of these weedy plant species stems not only from their lack of palatability, but also from their success at occupying the exposed and disturbed soils resulting from repeated trampling. Annual grasses and forbs, introduced 3 from the Mediterranean during Spanish times, have all but replaced native species of plants on all of the heavily grazed hillsides within the project site. These weedy species have become a component of every plant community on the project si te. Other types of vegetation removal and soil disturbance on the site include an extensive neto.j rk of dirt r-u s, 11-rails and vehicle tracks, geological survey pits and test profiles, and cut or fill from adjacent developments. Despite the highly disturbed nature of portions of.the site, and the pervasive inclusion of exotic plants throughout, some of these communities nonetheles represent an increasingly rare type of ecosystem. The walnijt/o.ik woodlands., the tall shrub associations, and the freshwatt:r spring within the project boundaries are becoming s_arce in southern California. Dudleya multicaulis, a small succu'knt plant, Has found within the project boundaries. This plant has been listed s sensitive species by the California Native Plant Society, indicating that its presence on any ite is a relatively rare occurrence. Two previous environmental ass..-,ssment reports have examined a 50-acre area which is included within the 230 acres considered in this report. This study is based on mo>-e field time over a larger area at a more favorable time of the year and is, therefore, more comprehensive and accurate thin these previous reports. 4 PLANTS Methods and Materials The project site was surveyed for vascular plant species for four days during the month of May, 1981. 'Toucher specimens were collected for species of plants which could not be iden- tified in the field. These species were later identified with the use of dichotomous keys or herbarium records at California State Polytechnic University, Pomona. The California dative Plant Society Rare Plant Inventory was checked for sensitive plant species having potential localities within the project boundary. After a preliminary survey of the vegetation at the site, a Classification of dominant plant associations was defined for the project. This classification generally follows that of Thorne (Rancho Santa Ana Botanical Garden, Claremont) and Munz (A Southern California Flora, 1974), but is modified to accommodate the highly altered nature of several of these communities due to disturbance. Black and white aerial photo- graphy (1:400 scale) of the project site was used to map these plant associations (Figure 1). This information was trans- ferred onto transparent mylar and the aerial extent of each association determined by planimetric techniques. The cut and fill (daylight) line of the maximum extent for the project construction was estimated on the plant association map, so that the percent removal of each association type could be calculated. The localities of any sensitive (rare) plants was determined in the field, and those localities were nc--.E on this map. All coast live oaks (Quercus agrifolia), having trunks larger than approximately eight inches diameter at breast height (OBH) and which fell within the area to be cut or filled, were surveyed and counted. A determination of the percentage of oaks remaining after the project was also estimated during the survey and from the aerial photography. Plant Associations A survey of the vascular plants on the site disclosed 98 identifiable species. Table 1 lists these species, arranged by plant families, together with common names and the plant associations in which they are most likely to occu-r, These species fall within one or more of six primary plar,` associations. Two of these associations, the coastal sage scrub and the disturbed grassland, can be conveniently b° '._ into two additional types based on the level of grazing disturbance and the general slope and slope aspect, Each of these associations will be discussed in the following sections. These associations are napped in Figure 1. Table 2 details the calculated acreages of each association occurring within the project boundaries, and the relative percentage of the total area each occupies. r u Disturbed Grassland The disturbed grassland is one of the plant associations which has been fundamentally altered by past human activities. Exotic or introduced plants predominate in this association and have been maintained by a long history of repeated fires and heavy cattle grazing. This association can be conveniently divided into two major types, a grazed field type and a disturbed roadside type. These two types differ in total number of plant species and in the relative abundance of non-native species. These differences are due to differential degrees of disturbance. In both types, the most abundant plant species are Brassica campestris and Bromus diandrus, both of which are introduced annuals. The grazed fields support 45 species of plants and occupy a much larger area than the roadside type. The roadside type supports 30 species of plants, the majority of which are weedy and totally inedible as forage. The disturbed grassland association is not unique either to this site or to the Diamond Bar area. It commonly occurs in fields and other waste areas throughout southern California. Coastal Sage Scrub The coastal sage scrub associations occurring within the project boundaries contain species of plants which grow to heights of less than three feet and occupy sites which have maximum exposure to sunlight and are generally steep -sloped. Although the plants of this association are the species 7 typically observed in undisturbed conditions (Artemisia californica, Salvia mellifera, S. apiana, Mimulus lonaiflr,--.;:-., Eriogonum fasciculatum), the association as found here could hardly be considered representative due to its highly disti,',°bed condition. It is not entirely clear whether the establis?,,;:':.; of this association on the site is from remnants of a pre - grazing sage association that was never completely removed by past disturbance, or whether grazing and fire has in fact encouraged the secondary establishment of this type. In an, case, the coastal sage scrub occupies areas which are less accessible to cattle grazing and which have reportedly burnied as recently as 1972. As with the previous associations, this coastal sage scrub can be divided into two distinctive types, One type is characterized as a heavily grazed, maximum exposure site where vegetation is low -growing and where perennial species occur but sparsely. This type has a majo,, element of exotic annual and perennial species of plants, vyf h, a total of 51 species. The second type approaches a more natural species composition because it has been less disturbed by grazing. Native perennial plants predominate, attaining maximum heights of more than three feet. The total number of plant species (54) is virtually the same'as the preceding type, but consists of a much higher proportion of native annuals and perennials. Tall Shrub A third category of plant association is called the tall shrub association. Earlier reports called it chaparral, but this is inaccurate. The number of shrub species present is significantly greater than typical chaparral, and several of these species are common to this particular area but not to chaparral. The tail shrubs occupy areas of steep slopes, and exposure to sunlight is less intense than the coastal sage scrub. The vegetation is dense and attains heights of up to 10 feet. Occasional openings in this shrub canopy allow for the establishment of shorter perennials and annual plants, increasing the total number of plant species present. The most common species include Heteromeles arbutifolia, Sambucus mexicana, Rhus ovata, Juglans californica and Quercus dumosa. Virtually all of the common species found within the other associations on the project site are also represented within this association. A total of 40 species of plants were identified in the tall shrub area. This is most likely the most "natural" plant association occurring within the project area. Its relative inaccessibility to cattle grazing and vigorous regrowth after fire have allowed this type to continue in a reasonably unaltered state. Walnut/Oak Woodland The walnut/oak woodland association has become increas- ingly rare in southern California due to increased fire frequency and outright removal due to development. This 9 association is gell represented on the project site, occupying a significant area in proportion to the other associations. These woodlands predominate in the lower canyons and gentle sloping areas on the western border of the property. The dominant overstory is Quercus agrifolia and J'uglans californica, both native species of trees. Both species are present in sizes of up to 40 inches diameter at breast height. The sizes of individual trees decreases the farther up the canyon slopes they occur due to decreasing availability of water and increasing exposure. The under - story of this association includes elements of all other associations occurring on the site, but here these plants tend to be low -growing and sparse in distribution. The better examples of this woodland have a very open understo,.t, of the disturbed grassland type (when the canopy is genera? open) or the shade tolerant and moisture preferring specilp", typical of the spring association. A total of 19 species of plants were identified in the walnut/oak woodland association. A survey of live oaks identified 186 individuals larger than eight inches 0BH that would be removed by the project. Approximately 32 percent of the total number o-1 oaks on the site would remain after the project was completed, but the majority of these are smaller -sized and less vigorous individuals occurring at the heads of the canyons. 10 Rock Outcrops Several sandstone rock outcroppings, approximately 9 to 15 feet in length and 3 to 9 feet in width, occur on the northwestern corner of the project site. The sandstone outcroppings support a small but specialized flora which can be considered relatively unique to this area. Most impor- tantly, this is the locality for oudieya multicaulis, the many -stemmed live -forever, which has been identified by the California Native Plant Society as a sensitive plant. Although it does not at this time receive any legal protection, the plant is becoming increasingly rare throughout its range. Two other species which are restricted to these outcrops within the project area are Mirabilis laevis and Friogonum elon atum. A total of six species were found on these rock outcroppings. Freshwater Spring A small freshwater spring occurs near the western boundary of the project near Golden Springs Drive. Occurring in a small canyon surrounded by the grazed field type, in the past this spring received intensive use by grazing cattle. Relatively few species of plants found on the site occur only around the spring, principally, a single Plantanus racemosa, Rumex salcifolius, Solanum douglasii, Juncus mexicana, and Carex sp. Other species occurring in adjacent associations, such as Rhamnus crocea ssp. ilicifolia, were observed growing here in the wet soil. A total of 18 species of plants occur in the freshwater spring association. 11 Project Impacts When construction is completed for this project, a part of every plant association will be either partially or entirely removed (Table 3). The only association which will be com- pletely eliminated will be the freshwater spring. The walnut/ oak woodland will be significantly reduced, and the largest and most vigorous trees will be removed. Except for those plant species unique to the freshwater spring, no species will be entirely eliminated from the project site. The Dudleya multicaulis will be only marginally affected by the construction, since the majority of the rock outcroppings occur outside of the cut and fill line. We estimate that approximately 18 individual plants will be destroyed out of a total population of 60 individuals, M 12 MAMMALS, REPTILES, AND AMPHIBIANS Methods Mammals, reptiles, and amphibians were censused within each plant association on the site and adjacent undeveloped land for four days during the month.of May, 1981. Mammals were either observed directly or indirectly by examining scats, tracks, burrows, and nests. Reptiles and amphibians were similarly observed, and specific microhabitats were examined where appropriate. Species of animals not directly observed, but that are expected in this type of habitat, are indicated as such in this report. Project impacts to wildlife were ascertained based upon the percentages of habitat loss determined in the plant survey, and upon the extent of surrounding habitat available to these species once the project is completed. Wildlife Habitat and Species Wildlife species of all taxa require specific attributes within their habitat, such as cover and food resources, in order to survive. An insufficient quantity or quality of any essential resource will either reduce the attractiveness of that habitat to animals, thus reducing the probability that the habitat will be used, or may be so limiting to animals already restricted to that habitat that they may be unsuccess- ful at reproducing, and ultimately surviving. Although a species may prefer a specific habitat for its cover and/or food, other habitats may serve as important 13 travel corridors, temporary sources of resources as they rn6v between preferred habitats, or as a secondary source of resources found in greater abundance elsewhere. Therefore, the loss of these secondary habitats may in fact limit the survival of species even though there is appropriate preferrcd habitat available. Table 4 includes expected, as well as observed species, together with habitat preferences. Five species of reptiles and amphibians were observed on the site, and an additional nine species were expected. Ten species of mammals were fo:,;-id in the project area, with another nine species expected. What follows is a discussion of the role of each of the five plant associations as wildlife habitat. Disturbed Grassland The grassland association, although highly modified du to frequent disturbance and plentiful introduced species, is by virtue of its general structure important as wildlife habitat for those species preferring grasslands. Twenty-two species of wildlife will use this habitat for food or cover. The California Meadow Mouse relies entirely on this habitat, and the Pacific Kangaroo Rat is also heavily dependent upon it within the project area. Coastal Sdae Scrub Coastal sage scrub occupies a relatively small percentage of the study site in comparison to other habitat types Its value as wildlife habitat.is therefore limited. Although 14 21 species of animals utilize this habitat in one way or another, only one species, the Desert 'Mood Rat, is entirely dependent upon this type. Walnut/Oak Woodland Twenty-four species of wildlife.are found within this habitat. These woodlands provide, although not exclusively, important cover for the larger mammals. In season they also provide large quantities of acorns and walnuts that may be pivotal for species such as ground squirrels and wood rats that store food against times of scarcity. The bases of the older trees sometimes provide homes for species that dig dens, such as foxes. Freshwater Spring_ Surface water can be a critically important resource for many species of animals. The spring found on the project site exclusively supports the Ringneck Snake, and is used by all but nine species observed or expected in the area. As many as ten species of wildlife may depend upon this source of water. Tall Shrub The tall shrub plant association is an important source of both food and cover for wildlife. Larger shrubs such as 4eteromeles arbutifolia, Sambucus mexicana, and Ouercus dumosa provide food in the form of large quantities of fruits and seeds. For smaller mammals, such as Brush Rabbits and Dusky Footed 'Mood Rats, the dense cover with adequate space beneath for running is important for escaping predation and for building nest sites. Twenty-one species of wildlife use this association as habitat and two species, the Brush Rabbit and the Dusky Footed Wood Rat, are almost exclusively dependent upon it for cover. Project Impacts Since a major portion of each of the plant associations except the tall shrubs) will be removed by the project, there will be a correspondingly great loss of wildlife habitat. among the reptiles and amphibians, the Pacific Treefrog, and f present the Ringneck Snake, California Legless Lizard, and Western Garter Snake will be eliminated because of the removal of the freshwater spring. Among the mammals, the Mule Deer, and if present the Raccoon, Opossum, Striped Skunk, and Gray Fox will be eliminated by the project because of the loss of the spring and the absence of sufficient acreage to accommodate their normal activities. The almost total loss of disturbed grassland will bring about a severe reduction or outright elimination of the California Meadow Mouse and the Pacific Kangaroo Rat. In summary, those animals most severely affected by the project will be those that are wholly dependent on either the freshwater spring or the disturbed grassland. Those least affected will be the species that use only the tall shrubs. Virtually all other species will have their populations reduce:.' 16 to some extent, and the degree of impact on a particular species may be approximated by comparing specific habitat requirements in Table 4 with the percentage of plant association (habitat) reduction in Table 3. 17 BIROS Methods Birds were observed by walking through all habitat types on the study area on five days in May, 1981. Surveys were begun at approximately 6:00 a.m. and continued for three to four hours. In addition, the study site was visited on several afternoons to look for species, such as raptors, which are more active at those times. A special effort was made to locate the more inconspicuous species and it is almost certain that virtually all of the species that are permanent residents on the site were noted. The only exception to this is the Poorwill, (Phalaenoptilus nuttallii), which is most certainly a resident on the site but is not active at any of the times the site was visited. A total of 47 species of birds were observed on the study site. These species are listed in taxonomic order in Table 5. The relative abundances of these species in five different habitat types are indicated. These relative abundances, which are based on the field observations, are given as indicators of the importance of each habitat type to each bird species. Additionally, species that are expected to use the site seasonally at times other than late spring are listed in Table 6. Most of these species use the site during migration, and may be quite numerous at those times. Other species listed, such as the Hermit Thrush and the Hutton's Vireo, may occasionally remain on the site for long periods of time but will never be numerous on the site. No attempt -was made to list all the vagrant species that could possibly pass over the site at some time. Habitat Use General The relative abundances of each bird species in five different habitat types was determined by observation (Table 5). These habitat types were chosen not only because they differ in floristic composition and structure, but also because they have different effects on the species of birds. For the purpose of the bird survey these five habitat types are:. disturbed grassland, walnut/oak woodland, walnut/oak edge areas, coastal sage shrub, and tall shrub. Except for the walnut/oak edge areas these avian habitat types are defined by the same plant species described for each plant association in the earlier section of this report. The walnut/oak edge is a habitat which is essentially an'edge between,or.combination of, two or more of the plant associations. In all cases,,the dominant overstory or cover consists of Juglans californica and Quercus agrifolia with the understory containing elements of either disturbed grassland or/and coastal sage scrub. Other important components include the presence of snags, downed woody material, and protective slopes which are often more moist than other nearby habitats. Some of the aspects of bird species use in each of these habitats will be discussed next. 19 Disturbed Grassland This habitat type is a primary feeding site for a numbzr of bird species. Twenty species were observed feeding directly in the vegetation or flying above this habitat in search of prey. The Brown Towhee, douse Finch, Song Sparrow, and Rough -winged -Swallow were the most abundant species in the habitat (see Table 5). Probably none of these species or any of the other species observed here were using thi, a'.. a nesting site. The towhee, finch, and sparrow are nesLing in adjacent habitat types on the study area. The swallows, which need a bank or small drainpipe to nest in, may not be nesting on the site but are dependent upon the feeding cpportu,)itiL, provided by this habitat. Five species of raptors were also seen using the disturbed grassland as a feeding site. One of these was the White-tailed Kite, which was formerly a peal cd species in California. It is no longer protected since -is becoming increasingly common throughr)ut California. Walnut/Oak Woodland Twenty-eight bird species were observed in this habitat. The dominant species were the Northern Oriole, Rufctis-sidr1r Towhee, Brown Towhee, and the Mourning Dove. These species were also quite numerous in other habitat types on the study area, although the Rufous -sided Towhee and the Northern Oriole prefer this habitat. The towhee gleans insects and seeds from the litter provided by the Quercus agrifolia and the or_E commonly uses this tree for nesting. Vests of this speL'iEs 20 of bird were found in almost one-half of the mature oaks on the site. A number of species are dependent on the various resources provided by these large oaks, both in the woodland and in the canyon edge areas. Mature Quercus agrifolia provide abundant resources for foliage gleaners ('Wilson's Warbler, Orange -crowned Warbler, Plain Titmouse, Common Bushtit, etc.); a large trunk and snags for woodpeckers and species whose nesting depends on these trees (Common Flicker, Nuttall's Woodpecker, House Wren, etc.); and perches for flycatching species (Western Flycatcher, Western Wood Pewee, Ash -throated Flycatcher, etc.). No other tree species on the study site provided this variety of resources for the avian community. Walnut/Oak Edge Of all the habitat types on the study area, this is definitely the area with the highest number of bird species. Thirty-seven bird species were observed in this habitat type. The structural diversity of the plant association provides a wide range of foraging and nesting sites for the avifauna. Many of these areas are in canyons and intergrade with all of the other habitat types to some extent. These areas provide open and closed canopy, tall trees and low vegetation, open and closed understory, and high concentrations of snags. These attributes are in addition to all of the previously mentioned resources of the Quercus agrifolia. This diverse habitat not only increased the number of species that used the area, but 21 also increased the abundance of individuals. Seven specie.., were either common or very common in these areas. These species were the Scrub Jay, Mockingbird, Mourning Dove, HOUSE Finch, Northern Oriole, Rufous -sided Towhee, and Brown Towhee. Coastal Sa2e Scrub Eighteen species of birds were observed in this association. The Mockingbird, Brown Towhee, and the House Finch were the most abundant species. This is the preferred habitat of the Anna's Hummingbird because of the foraging opportunities provided by some of the plant species found here. Four other species usra the habitat extensively; the Scrub Jay, Common Bushtit, California Thrasher, and the Song Sparrow. Tall Shrub Twenty-three species were observed in this habitat The two most common species were the California Thrasher and the Rufous -sided Towhee. Nine other species were well represented in the habitat, the majority of which depend primarily on this habitat for nesting. Project Impacts General The project impacts will be discussed by habitat. This will allow an- analysis of each habitat and its associated avifauna in relation to the amount of that habitat which will be removed by the project (sea Table 3). The species or that are found in only one habitat type or depend heavily on a 22 certain habitat type will, of course, be most severely affected by the loss of that habitat. For this section of the report the Walnut/Oak Woodland and edge areas will be combined. Disturbed Grassland There were four species that were observed only in this habitat type (White-tailed Kite, Lazuli Bunting, Killdeer, and the Meadowlark). Additionally, the Tree Swallows and the Rough -winged Swallow are dependent on the disturbed grassland for feeding. Since approximately 74 percent of this habitat will be eliminated by the proposed project; these six species will be severely impacted by this loss of habitat. The species that were abundant in this habitat but were also numerous in other habitats will be reduced in population size. Walnut/Oak Woodland This plant association is more important for a great number of bird species than any other. Since about 74 percent of this prime bird habitat will be removed by this project, the species that are most dependent on these areas, and most especially the species that are dependent on the mature uercus aarifolia, will be most severely impacted. The species that were observed only in these areas were the Common Flicker, Nuttall's 'Woodpecker, Band -tailed Pigeon, Western Flycatcher, Western Wood Pewee, Loggerhead Shrike, Brown -headed Cowbird, Western Tanager, and the 'White -crowned Sparrow. Additionally, the Red-tailed Hawk, Cooper's Hawk, Great -Horned Owl, Mourning Dave, Ash -throated Flycatcher, Northern Oriole, Hooded Oriole, 23 and the Black -headed Grosbeak will be greatly affected by the reduction of this habitat. Coastal Sage Scrub The Roadrunner, Anna's Hummingbird, Mockingbird, Common Bushtit, House Finch, and the Brown Towhee are the species that will be most affected by the loss of this habitat. Since all of these species also use other habitat types (although the Roadrunner was not observed in any other type), and since over half of this habitat will remain intact, the project impact on these species of birds will not be severe. Tall Shrub About 89 percent of this habitat type will remain unaltered by this project. Thus while some species will incEar slight reductions in their population sizes on the study site, this will not adversely affect the viability of these specifies of birds. 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I al zs x al L a] G as I r 4-1 a.1 ra b En Cd O Z I-J 5.. r a1 Z 3 C O r r- N ra O r• N a w• 4- v'f L O w- O cJ i cn S. O O tl a N a•- N 4- r 4- N 3 C C r L i O u ra r- ro r L s- C.7 Uetz4roOU ra to N ra U N 4..) y a.1 N QJ U U r a] a7 O L L 4-4 a-1 ra gn Q] N c7 o O S. R L- j o IZJ Cl.C-1 a cn r V7 rO ci C 0 a r- rp C 4 a C7.I O U J CD aJ r r J a) 4-3 r O as 4-J C N w a1 a L cif J 7 L 7J a] O U aJ CII G C.0 vi C - C - J 30 PUPLPaaM Ie0/;nULeM x x qn-AqS LL21 x x x x do.4o;no joo x 0 5ui.idS to;emgsaa j x Ln Pul2Lsspa9 Paqm;sLo gn.ioS a6eS Le;sno x x x x c aJ w a R r tlJ U QJ QJ QJ ci QJ U U R QJ R QJ R R al R QJ R OJ ro QJ R aJ m O r aJ U Q) U LL C rG UR U rp U U R a•- O al r6 R S_ R S_ r• U T c r a j 1 cn et ft roR a O c O e 4..r QJ 4 Z ra O QJ r y O U r a r r- U r C N Q• QJ S_ rn QJ C 4 T U r aJ n C7 N O_ 7C O 4-) C S_ ra R S_ QJ D Z S_ r r aJ ra QJ r O 4•• O R V 4- rq QJ 4, 7 a U r0 U L 3 cl N U U I r T• U r r- G R T r• c O RCLr rC S_ 3: R U x QJ OJ r r• QJ S. V7 r S_ L* QJ v] J U, rd C Q3 r r QJ Q: rC V7 Q: R V1 r r rd r R r qrd r• U r i N r• U S.. R N S.. cc L'' •r u 7 D I R Cn R rll ro Ln Q_ r R N r•- i.•7 R QJ J b Q) a S.. N m Z q F . U ra O r• R 1 Q) V7 1 S- 1l m m ra O ci c S_ R 3 ro S_ R cn a cn cn 4-1 L QJ CT3 x aJ M r- a) r- O Z O4— 4J 1 j 6 aJ L U ra 4_ r V7 V1 L 3 cU CL. 31 PUPLPooM QQ/;nuLeM N gn-A4S L Lul z doaa;npyood C 6utadsCDaaarysaa CA Q pup LSsv Ag Pagan;S LQ gnaos a62S L24sQ00 x x x x x x x x x x x x x x x x x x x x x x x x x x x ea cu a) V c r a) a) a) c) w a) a) a) a) L 07 ra m rQ m ra eo ra ll ra ea a) a) a) C) Qj a) v m a) 4- V U V U V U V i U ra G ra ra ra m ra ro ro ra ra CL to QJ a) 4) 1) a) 9) w a) W rl3 O O O O O O O O O C= CL G Z. 0- Cl- C — Cl. CL L LJ s t U rn a) L o a) L Ln V 4-= o r r• O L C O rp F rn J 43 O V a) V L L V1 J q O r a O a) ro V N v ro CM ro r— LA 2) r O 4-.3 L a) c!r C r O 4-J 77 L ro ra r O 4-. C L IUraV1t!s V7 O O 0 r c c C O O e• O Q ra O O O O L) c L r- CL a1 a) N i cn aO Vr 0 s. 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O O a] 7u U S7 r- a Q) a 3: 3 C cu 3 a ra O Q S..: O 7 4- J O O 4-3 vi O 3 L cn I 6j a L u Y L r- ra 34 Table 2 Acreages of Major Plant Associations Occurring Within the Project Boundaries Percent Association Acreage Of Total Coastal Sage Scrub 29.6 13 Disturbed Grassland 90.75 39 Freshwater Spring 2.0 1 Rock Outcrop <1.0 -- Tall Shrub 52.1 22 Walnut/Oak Woodland 58.4 25 TOTAL 232.85 35 Table 3 Acreages of Major Plant Associations Removed and Remaining After Project Construction is Completed Coastal Sage Scrub Disturbed Grassland Freshwater Spring Rock Outcrop Tall Shrub Walnut/Oak Woodland TOTAL REMOVED Percent of Association Acreage Total REMAINING Percent of Association Acreage Total 8.5 29 21.1 71 67.1 74 23.65 26 2.0 100 0.0 0 5.6 11 46.5 89 43.3 74 15.1 26 126.5 106.35 36 Lv 4-1 r 10 4-1 v7 1 4-a ra N 4.. r C O G.i L t7 a aJ 4mJ 4m- U G] G] L L G x w n x c CJ cu +J 7 U L QJ QJ G Ln x W c O n as N R3 ra a r N b C b L N Q ra 5= r r. C a-J r C> CJ C!. L CT N a] W 7 L Q] 4-0 N7 C. 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N r- a r O 4-j al r rG 4-1 O V U F- F— cr7 i L S. at i Y r- I, vi s 3 L m 3 U O cu O H v7 L O C L rd r Q 3 L U a1 r i rd L i C Q) W C1 V crt 4J O O cu r- 4- 4J m O a} al C: a tli Y Cl i i N to 4-j 3 M N O O L O O IC r O y i O u L 0 0 42 QD Ac c K is je 1c c ro r c c is K K ro ro O O c O U r c a 3 is is K IC K O 0.1 La aUl ro 4-3 a cn riz V7 r o ro Cj r- a V U C ro L ro q rp ro o r ro U 4-1 U r U C] U m r rd q M aJ x r o a o j a cu o_ m S- C) 4" rp U rO vn cn ro n O ro O cn L ro cn - U G U M L r6 r r rt Q} 4-1 ro 11 r r a a-•+ rO S- v1 L r r r +. r ro ro r Q Q! r C- C- U L, C N Q1 ro w L ro o y r rn a r Ql OJ L r L a-j 0 c QJ C 7 r 7 1— vl O c as 4.J rd O o r o L U +••J '— 43 CJ 0 O L rC Q O aJ U C Z C L I L cn I V7 cu x a al aU 1 ; U O vi 0 O 3 N G1 x -it -k 4e Ln ro N n 4- q i y r- r0 O Q% L O t L^ J J rJ• 3 L/l K 1 i 1 1 1 1 1 1 1 i 501 North Indian Hill Blvd. Claremont, CA 91711 June 10, 1981 Esco L. "Bill" Richardson & Associates 1505 East 17th Street, #217 Santa Ana, CA 92701 Dear Mr. Richardson: This letter reports on the number, percentage, and condition of coast live oaks ( uercus agrifolia) that would be removed from a site by its development into industrial sites. This letter is concerned only with uercus agrifolia trees, which hereafter will be referred to simply as oaks". The site of proposed development is located in the western portion of the community of Diamond Bar, in eastern Los Angeles County. Field surveys were based upon Study "A", Tentative Tract Map No. 39679, prepared by Esco L. "Bill" Richardson and Associates in January, 1981. Field surveys were made on two days in May of 1981. At that time all oaks having trunks larger than approximately eight inches diameter at breast height (three feet above the ground) and which fell within the area t be cut or filled were surveyed and counted. A determination of the percentage of oaks remaining after the project was also estimated during the ground survey and also from aerial photographs. The survey determined that 186 oaks would be removed from the site by the proposed development. This represents approximately 68 percent of the total number of oaks on the site. The trees that would be removed are larger in size, and more vigorous, and offer better wildlife habitat than those that would remain. Sincerely, Ronald D. Quinn, Ph.D. Professor of Biological Sciences ARCHAEOLOGICAL SURVEY OF TENTATIVE TRACT NO. 32679 DIAMOND BAR, LOS ANGELES COUNTY, CA, May 1951 by, BRUCE JENKINS Supervisor Constance Cameron, Consultant ARCHAEOLOGICAL RESEARCH FACILITY/MUSEUM OF ANTHROPOLOGY California State University, Fullerton Archaeological Research Facility Museum of Anthropology California State University Fullerton, California 92634 71.4) 773-3977, 7 73-3976 ARCHAEOLOGICAL SURVEY OF TENTATIVE TRACT NO. 39679 DIAMOND BAR, LOS ANGELES COUNT, CA. SUMMARY An archaeological survey of Tentative Tract No. 39679,Diamond Bar, Los Angeles County, was performed by the Archaeological Research Facility, California State University, Fullerton, for Mr. Esco L. "Bill Richardson. No adverse impact on cultural resources is anticipated from the proposed project. A qualified archae- ologist should be contacted, however, in the event that artifactval material is ex- posed during grading operations. INTRODUCTION: An archaeological survey of Tentative Tract No. 39679, Diamond Bar, Los Angeles County, California was performed on May 12, 1981 by Bruce Jenkins, Gale Carpenter, David Elder, Mike Miniaci, all members of the Archaeological Research Facility, Department of Anthropology, California State University, Fullerton. The survey was performed at the request of Mr. Esco L. "Bill" Richardson, Licensed Land Surveyor. DESCRIPTION AND LOCATION OF THE PROPERTY: The subject property consists of 250 acres located south of Golden Springs Drive and East of the Pomona (60)/Orange (571 Freeway Interchange fn Diamond Bar, California. The U.S.G.S. topographic map reference is Township 2S, Range 94, NW, Section 16 on the San Dimas and Yorba Linda Quadrangel maps, 7.5 minute series see attached map). The land parcel is approximately 6400 feet by 3200 feet and ranges in elevation from 620 feet to 1040 feet. There is a buried gas line at the southwest end of the property. The south is defined by a ridge top which contains a recent housing tract. The soil is a sandy loam with outcrops of broken sandstone in some areas. The vegetation at lower elevations is dominated by annual weeds, mustard, and thistle. Higher up, on the slopes, is typical Southern Cali'forni'a chapparel with oak trees, scrub oak, sage, buckwheat, elderberry, Jimson weed, and poison oak. The fauna of the area is represented by deer, cottontail rabbits, rodents, snakes and lizards, redtail hawks, crows, and a variety of song birds. Tentative Tract No. 39679 Diamond Bar, CA. page -2- There are a number of dirt roads on the property. Most of these roads are located at the lower elevations; although some do lead up the ri'dges. ?zany of the roads have been used by off -road vehicles, particularly motorcycles. ARCHAEOLOGICAL BACKGROUND: Southern California is generally defined as the coast and the tntertor, south of the Tehachapi Mountains. Within this area tfiere are two archaeological regions, the Coast and the Desert [Mei`ghan- l959)_. Each contains an artifact inventory re- presenting adaptati-ons to local environmental condi'ti,ons. Wi-I l lam J . W'al 1 ace C19551 suggested four horizons or time periods for Southern California: Fiortzon I, Early Man; Horizon II, Milling Stone; Horizon III, Intermediate Culture; Horizon IV, Late Prehistoric. Warren's Encinitas Tradition corresponds roughly to Wallace's Horizon LI and the tool assemblage is typified by an abundance of miIli -ngstones (manos and metates) and crude chopping, scraping and cutting tools. Doughnut stones, di'scoi'dals, and cogstones are occasionally found. Projectile points are large and crudely manu- factured. Warren' s Shoshonean tradition began perhaps 15Qa years ago Ccorrespondi-ng to Wallace' s Horizon IVJ and continued until the time of European contact. This tradition grew from the influx of Shoshonean speaking people coming from the Great Basin and spreading through Southern Cali-fornia all the way to the coast. It i-s characterized by the addition of new tools to the previ-ous tradi'ti'ons. These new tools include small, finely made projectile points, more shell and bone artifacts, and the appearance of ceramics i•n some locations, HISTORICAL BACKGROUND: Gaspar de Portola led the first European land expedition through coastal California, traveling from San Diego to Monterey in 1769. Several Spaniards traveling with Portola, notably Pedro Fages, Miguel Costanto, and Fathers Crespi and Gomez, kept journals and recorded descriptions of the land and the native peoples. It is from these journals that we know the approximate route taken. After ten days of travel from San Diego, they camped beside the river now known as the Santa Ana River... They then continued north through Brea Canyon into Los Angeles County, passing southwest of the subject property. This property was once a part of the Rancho Santa Ana del Chino, purchased from Don Antonio Maria Lugo by Isaac Williams in 1841 (M tlls 19751-. ARCHAEOLOGICAL RECORDS SEARCH: An archaeological records search for the subject property was requested from the U.C.L.A. Archaeological Survey which houses the records for Los Angeles County. This search was carried out by Barbara Beroza of U.C.L.A. and her findings show no previously recorded archaeological sites on the subject property. The closest sites, three in number, are approximately one-third of a mile to the northeast. Tentative Tract No. 39679 Diamond Bar, CA. page -3- The three sites are LAn-852, 853, and 854, all recorded by D. Whitley on 9/21/76. They are each described as being small lithic scatters of cores and flakes, no site depth was noted. An isolated find was located near Diamond Bar Creek just north of the subject property. The next closest recorded site is over one -and -one-half miles to the north. A check of the historic topographic maps for this area, by U.C.L.A., did not show a record of historic structures within the boundaries of Section 16. A check of the National Register and the California Inventory of Historic Resources was also negative. SURVEY METHODOLOGY / RESULTS: The survey was conducted on May 12, 1981 by Bruce Jenkins, field supervisor and field crew Gale Capenter, Dave Elder, and Mike Miniace (volunteer). Constance Cameron served as the archaeological consultant. The area was surveyed in 15 to 20 meter transacts along the ridges and drainages, wherever possible. Steep slopes and dense brush cover made complete coverage of the property impossible. Areas of higher sensitivity for cultural resources (ie. relatively level areas, lower knolls, and along major drainages) were more intensively searched. Rodent holes, erosion cuts, dirt roads, and other clearly exposed areas were carefully examined. The ground actually observed was approximately 600 of the property while the remaining 40% was cursorily observed from a --distance due to dense brush and steep slopes. No evidence of prehistoric use was observed during this survey. A rock wall, asphalt pavement, and a concrete slab were observed i-n one drainage area but no mention has been found in the records of any hi'stcri'c structure i'n thus area. CONCLUSIONS/RECCMMEN DATIONS: Development of this property will have no adverse effect on cultural resources. The historic pavement was probably associated with recent ranching operations. No artifactual material was observed on the surface of the property; however, there were level areas covered with vegetation where the ground could not be seen and it is always possible that there are artifacts burned beneath the surface. If arti- factual material should be exposed during grading operations, a qualified archae- ologist should be contacted immediately in order to remove the materials in a proper scientific manner. REFERENCES Meighan, Clement W. 1959 The Little Harbor Site, Catalina Island: An Example of Ecra1 c i;r Interoretation i-n Archaeology. American Antiquity, Vol 24 Mills, Marie Taylor 1975 Historic Sites Wi:thi•n the Mount San Antonio College District Depicting Landmarks of The Vintage Fears, Mount San Antonio College Foundation, Walnut, CA, Wallace, William 1955 A Suggested Chronology for Southern California Coastal Archa .,,ln,; in Heizer and Whipple Leditorsj The California Indians: A. Book. University of Cal ff orn is Press Berkeley. Warren, Claude 1968 Archaic Prehistory In the United States. Eastern New Mexico University Contributions In Anthropology. Vol. 1 No. 3. R K.. " . \ 1 1 v7S`'.. • d , - . I 65+•, ••4 .:. • C .'w , J J .^ ` l• ;_wi.r' f ; `45L ,r - V 1 F ` e' 9 : ! ' , ... A :. c 5ar=nenl . *-;. ,•,`•,'-': I• : /mot Il ' '• •• v,. .' .c:^rr. ! iS , I Y r/'W. is •• 'fY,:: a ... ,'' L•" l' .% J •. V' s„-r--... 1{-1 0 4.r ` / i a • I rr{r : Jr! hhx V f SA7 ¢ . a te• S n+` 1 } = I ILA. Vim• ,`'' G ' • :•• S • :-j : ~ l ( ' r . ems. ':' `' \ . „`;fir - rZs'0 rJ VE a ; f;,•^ ` x / Jul %i • r `..,s r S - 8M - ~ r" 5 - '1' _ .•;sjr 6 ~ ~l ' ` . ;:r\ i- i ,* i.. OF s y5 --=.' \ fr%' II'* i ,rz eiC..""''- ' %s:`.....•. +' 6M11 y..:,_ r• . yd F \`% i- _ .: •' J•• 'f .n4. rti'.5; J,..} '• - I %•:!;:.'^ s:a . ^.[ ^l: . . i- is •- :, '--.' : li ..' a6L-. I r •'' r r . ' '.ri. r ; l. .. Y:.' /"''f r'_ l' ,. 0 I.r, , •g.•/-... _M1w \\: ti` 1M1-, - - „ ., • 1 :.; , Q%•' a, , it ; \ - f , ,...:.• `iy'.+r, }r 1 r+•'..,. v— j Q r ,.`r- J 1 ;-- fe ,yam ::%: -' J-`J r-/_ •' .'^-• i ='. c "?;; y" s ' i. jar AREA CONTAINING T.T. 39679 Diamond Bar, Los Angeles County f f `-, ;, >> r, `,' ;jl•;, t U S .G.3. 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Traffic Engineering 1. , J Jf%fJ r s I " af,•{; c f.' .' VJ f1 f1 •'r .r y, f 1•'• .j J; f'' 'r.21 ;Y//`tip =.jar, { }?ff •;r.rf'-'r f..'. 1't -! I•S'i.' ;.' f l Ii^'•I,a'J :,!?•r ir' I,r..1 fi+`.Lj 'fi'-ffl ' i l ` rat. i rt f ~1_' 0 CD Table of Contents Section Page No. 1. Findings ................................................ 2 Existing Traffic Conditions Existing Plus Project Traffic Conditions Mitigation Measures 2. Project Description ..................................... 4 Project Location Proposed Development 3. Existing Traffic Conditions ............................. 5 Surrounding Street System Traffic Volumes Intersection Capacity Utilization 4. Project Traffic ......................................... 7 Traffic Generation Traffic Distribution and Assignment 5. Existing Plus Project Traffic Conditions ...............,. 9 Traffic Volumes Intersection Capacity Utilization Signal Warrants 5. Other Traffic Considerations ........................... 12 Access Guidelines Internal Circulation Design Guidelines Access Points Left Turn Pockets Bicycle Trails Average Trip Length Vehicle Miles of Travel Appendices A. Glossary of Transportation Terms B. Explanation and Calculation of Intersection Capacity Utilization List of Figures Following Figure No. Title Page No. 1 Existing Traffic Conditions ............... 6 2 Project Traffic Distribution and Assignment -Inbound ....................... 8 3 Project Traffic Distribution and Assignment -Outbound ....................... 8 4 Existing Plus Project Traffic Conditions ..... 11 List of Tables Table No, Title Page No. 1 Trip Generation ................................ S 2 Existing Plus Project Intersection Capacity Utilization 10 3 Signal Warrant Volumes ......................... 11 4 One -Way Trip Length by Land Use ................ 15 5 Vehicle Miles of Travel ........................ 16 Diamond Bar industrial -Office Traffic Study This report contains the traffic analysis of the Diamond Bar Industrial -Office development. The project site .is located on the easterly side of -the 57 Freeway southeasterly of Golden Springs Drive in the Diamond Bar area. The traffic report contains documentation of existing traffic con- ditions, traffic generated by the project and distribution of the project traffic to surrcunding-roads. Each of these topics is contained in a separate section of the report. The first section is "Findings", and subsequent sections expand upon the findings. In this way, information on any particular aspect of the study can be easily located. Although this is a technical report, every effort has been made to write the report clearly and concisely. To assist the reader with those terms unique to transportation engineering, a glossary of terms is provided in Appendix A. 1 . Findings This section summarizes the existing traffic conditions, existing plus project traffic conditions, and the proposed mitigation measures. Existing Traffic Conditions a. The project site is vacant and therefore generates no traffic. b.. Golden Springs Drive is a four lane improved roadway. c. All roadways southerly of the 60 Freeway in proximity to the project site are operating within their capacities. d. All intersections studied are operating at Level of Service B" or better. Existing Plus Project Traffic Conditions a. The project will generate 13,740 vehicle trips per day. b. At project completion all roadways southerly of the 60 Free- way in proximity to the project site will operate within them capacities. c. All intersections studied will continue to operate at Level, of Service "B" or better. d. At approximately 50 percent of project buildout, traffic signals will be warranted at both project access points. e. Upon completion of the project,the daily vehicle miles of travel will be 113,862 miles. mitigation Measures a. At 60 percent of project buildout, traffic signals should be installed at both project access points. b. Left turn pockets for westbound traffic on Golden Springs Drive should be installed at the project access points. 2 C. Left turn pockets should be a minimum of 250 feet long. d. The access and internal circulation guidelines as presented in Section 6 of this report should be followed especially with regard to access on curves and adjacent or opposite inter- section access points. 3 2. Project Description Project Location The project is located along the southerly side of Golden Springs Drive westerly of Grand Avenue and easterly of the 57 Freeway in the Diamond Bar area. Proposed Development The 233 acre parcel consists of hilly terrain of which 74 acres are considered buildable. Based upon the buildable acreage, 37 acres are to be for light industrial uses, 35 acres for office uses and 2 acres for restaurant uses. The traffic characteristics of the uses proposed include the following: Light Industrial. Light industrial land use will character- istically have fewer employees per acre than most other business or commercial uses-, and fewer non -employee visits. There are pronounced traffic peaks as employees- arrive in the morning and depart in the evening. Offices. Typically, professional offices used by insurance agencies, real estate agencies, doctors, lawyers, C.P.A.'s consulting firms, and others have pronounced peak traffic during the morning and evening peak hour periods as employees arrive and leave. Restaurants. Typically, restaurants experience heaviest traffic during the noon hour and in the evening after 6:00 PM. Morning traffic is usually insignificant, and evening street peak traffic is low. 4 3. Existing Traffic Conditions This section discusses the surrounding street system, existing traffic volumes, and existing intersection capacity utilization. Figure 1 depicts the existing traffic conditions. Surrounding Street System The roadways in the vicinity of the project include: Golden Springs Drive (Colima Road), Grand Avenue, Diamond Bar Boulevard, Pathfinder Road, Brea Canyon Road, the Orange Freeway (57 Freeway) and the Pomona Freeway (60 Freeway). Golden Springs Drive (Colima Road). This is a four lane secon ary roadway with a posted speed limit of 50 miles per hour. The project site will take access to Golden Springs. As Golden Springs passes under the 57 Freeway in the vicinity of project site a raised median exists. This roadway is comprised of several curves and grades. westerly of Brea Canyon Road, Golden Springs becomes Colima Road. Colima is classified as a major roadway and provides eastbound access to and from the 60 Freeway via a signalized intersection. Grand Avenue. This is a four Zane divided major roadway with a raised planted median. There is a full interchange with the combined 57 and 60 Freeways. There are signals on Grand at the eastbound freeway ramp, Golden Springs, and Diamond Bar. Diamond Bar Boulevard. This is a four lane divided major roadway having signalized intersections with Grand and Pathfinder. Pathfinder Road. This is a two lane major roadway with a full interchange at the 57 Freeway. The northbound and southbound 57 Freeway ramps at Pathfinder are signalized. Brea Canyon Road. This is a two lane major roadway flaring to four lanes at its intersections with Pathfinder, Golden Springs Colima) and the 60 Freeway westbound ramps. The former intersection is controlled by a "STOP" sign on Brea Canyon while the latter two intersections are signalized. Traffic Volumes The existing daily traffic volumes are based upon the Los Angeles County and CalTrans traffic volume publications. These daily two- 5 way volumes are illustrated in Figure 1. Using roadway capacities of 14,000 vehicles per day on two lane roads and 28,000 vehicles: per day on four lane roads, all roadways in the vicinity of the proj- ect site and southerly of the 50 Freeway are operating within their capacities. Intersection Capacity Utilization (ICU) ICU is essentially a measure of the portion of an intersection's total capacity being utilized by the traffic volumes. An explana- tion of ICU and Levels of Service along with the calculations of the intersections studied can be found in Appendix B. Using the existing evening peak hour traffic volumes and current intersection geometrics, the existing Intersection Capacity Utilization (ICU) was calculated for the intersections in the vicinity of the project site. As illustrated in Figure 1., the intersections studied are oper- ating at Level of Service "B" or better. P 1122 12. Figure 1 Existing Traffic Conditions Orange Freeway Legend 04 Number of Through Travel Lanes 0 Signal 087 Average Two -Way Daily Traffic Volume(in Thousands) 3A PM Intersection Capacity Utilization C Level of Service 1L 1N nQf vtSSOCtCif S 4 Project Traffic To estimate project -related traffic volumes at various points on the street network, a three step process is utilized.. First, the traffic which will be generated by the proposed development is determined. Secondly, the traffic volumes are geographically dis- tributed to major attractions of trips, such as residential areas, commercial developments, and recreational centers. Finally, the trips are assigned to specific roadways and project -related traffic volumes are determined on a route -by -route basis. Traffic Generation The traffic generated by the project is determined by multiplying an appropriate trip generation rate by the quantity of land use. Trip generation rates are expressed in terms of trip of -ids per per- son, trip ends per employee, trip ends per acre, trip ends per - dvelling, or trip ends per thousand square feet of floor space. if a particular land use generates six outbound trips per acre in the morning peak hour, then six vehicles are expected to Ieare the site in the morning peak hour for each acre of development. Significant research efforts have been made by CalTrans, the Insti- tute of Transportation Engineers, Kunzman Associates, and others to establish the correlation between trips and land use. From this body of information, trip generation rates can be estimated with reasonable accuracy for various land uses. Trip generation rates are -predicated on the assumption that energy costs, the availability of roadway capacity, the availability of veh.ic]es to drive, and our life styles remain similar to what we know t(-1day. A major change in these variables may affect trip generation rates. The trip generation rates found in Table 1 were derived from the Institute of Transportation Engineers' publication Trip Generation. Traffic Distribution and Assignment Traffic distribution is the determination of the directional orientation of traffic. It is based on the geographical loca- tion of residential, commercial, business, and recreational opportunities. Traffic assignment is the determination of which specific route development traffic will use, once the generalized traffic distribution is determined. The basic factors affecting route selection are minimum time path and minimum distance path. Figures 2 and 3 illustrate the project traffic distribution and assignment for inbound and outbound traffic. 7 TABLE 1 TRIP GENERATION Descriptor Acres/ Sq. Ft. Morning Peak Hour Evening Peak Hour Daily Total In Out In Out Trip Rates: General Light Industrial Acre 8.6 1.5 3.2 6.3 55 General Office Acre 23.0 3.1 3.8 21.0 240 Restaurants TSF* 8.5 3.5 9.9 4.0 165 Trips Generated: c Light Industrial 37 Ac. 320 60 120 230 2,040 Professional Office 35 Ac. 810 110 130 740 8,400 Restaurants 2 Ac. 20,000 Sq. ft.) 170 70 200 80 3,300 Total 74 Ac. 1,300 240 450 1,050 13,740 TSF=Thousand Square Feet. Figure 2 . Project Traffic Distribution And Assignment Inbound sril a 30 D s O 2 15 5 Go 60 so 35 `$ 100 c c Site 3 a 20 Qua 10 Pathflry^ r Rya r 30 Ora Freeway Ui1 4nQh c eSSOCiQt2S Figure 3 Project Traffic Distribution And Assignment Outbound SO 0 fr 30 35 G 60 iaen 40 5 35 Site 3 10 20 pathfinder R ad sr 30 Prange Freeway J-LU11 6'YlQ 1 C.TCSS IQL S 5. Existing Pius Project Traffic Conditions once the project -related traffic is assigned to the existing street network and added to existing volumes, the traffic impact can be assessed. Figure 4 and Table 2 graphically depict the ex- isting plus project traffic conditions. Traffic Volumes At project completion the existing plus project daily two-way traffic volumes will be as depicted in Figure 4. Intersection Capacity Utilization (ICU) When the project traffic is added to the existing movements of t.re -:_n intersections studied, it can be noted that the Level of service remains the same for all except one intersection- Brea; Canyon Road and the eastbound 60 Freeway Ramps changes from an evening peak hour Level of Service "A" to "B". Table 2 provides information on existing and existing plus project .intersection capacity utilization. Signal Warrants Traffic signal warrants have been adopted b- CalTrans and the Federal Highway Administraticn. These `saAranti4 are Lase,_on thfa per hour volumes in the eight highest hours of a day. It is generally assumed that the volume in the eight highest hours is equal to 60 percent of the volume in the peak hour, and the peak hour is 10 percent of the daily traffic. Thus, the signal wa.i- rants can also be expressed in terms of peak hc))r and. daily traffic volumes. The total daily vehicle trips generated by the project is 13,740 trips. The existing plus project daily traffic volume can Golden Springs Road is estimated to be: 14,040 vehicles in proximity to the project's western access point and 11,300 vehicles in proximity to the project's eastern access point. Upon project completion, it is estimated that 55 percent (7,560) of the daily project trips will use the western access point and 45<percent (6,180) of the daily project trips will use the eastern access point. Using Table 3 Signal Warrant Volumes and the posted speed on Golden Springs of 50 LMPH, signals will be wa.rrazO---ed at: both access points when the project is approximately 60 percent builtout. 0 TABLE 2 INTERSECTION CAPACITY UTILIZATION EXISTING AT+-D EXISTING PLUS PROJECT Intersection Morning Peak Hour Percent/Level of Service Evening Peak Hour Percent/Level of Service Existing With Project Existing With Project Grand and Golden. Springs 40/A 35/A 40/A 52/A Grand and 57-60 Eastbound Ramps 28/A 21/A 28/A 21/A Grand and 57-60 Westbound Ramps 28/A 07/A 33/A 08/A 60 Eastbound Ramps and Colima 37/A 46/A 51/A 51/A Brea Canyon and Golden Springs 42/A 42/A 52/A 43/A Brea Canyon and 60 Westbound Ramps 36/A 41/A 55/A 67/B Brea Canyon and Pathfinder 27/A 30/A 28/A 3G/A Diamond Bar and Grand 47/A 34/A 49/A 35/A 57 Northbound Ramps and Pathfinder 35/A 65/B 39/A 68/B 57 Southbound Ramps and Pathfinder 29/A 60/B 41/A 63/B 10 Table 3 SIGNAL VOLUME WARRANTS Warrant Minimum Volumes Entering Minimum Vehicular Interruption of Intersection Volume Continuous Warrant Traffic Warrant Urban* Rural Urban* Rural Pla or Street Add Both Approaches) 1 lane approaches Daily Volume 8,000 5,600 1 12,000 8,400 Eight Highest Hours volume 500 350 750 525 Peak Hour Volume 800 560 1,200 840 2 or more lane approaches Daily Volume 9,600 6,720 14,400 10,800 Eight Highest Hours Volume 600 420 900 630 Peak Hour Volume 960 672 1,440 1,080 Minor Street Highest Volume Approach) 1 lane approaches Daily Volume 2,400 1,680 1,200 850 Eight Highest Hours Volume 150 105 75 53 Peak Hour Volume 240 168 120 85 2 or more lane approaches Daily Volume 3,200 2,240 1,600 1,120 Eight Highest Hours Volume 200 140 100 70 Peak Hour Volume 320 224 160 112 Use rural warrant if speed is greater than 40 miles per hour on any leg Source: CalTrans and Federal Highway Administration adopted signal warrants 11 6. Other Traffic Considerations This section discusses guidelines for access points, internal circulation., left turn pockets, bicycle trails, average trip length, and vehicle miles of travel. Access Guidelines 1. Access roads and/or driveways for the developments should be located at least 200 feet apart and at least 200 feet from the nearest intersection. 2. Driveways to each development should be curb -return type. 3. Driveways should be at least 28 feet wide, and preferably 30 to 35 feet wide, so that an entering vehicle does not interfere with an exiting vehicle. Narrower driveways lead to conflict between entering and exiting vehicles, causing one to stop and wait for the other. 4. The first parking stall which is perpendicular to a driveway, or first aisle juncture, should be at least 40 feet back from the curb. The reason for this recommendation is to provide a queueing area off street so that if a vehicle is parking or unparking in the stall nearest the street, there is room for at least one vehicle to queue while waiting for the other vehicle to park. Without this provision, vehicles will queue into the street. 5. Adjacent intersections along the same street, but on opposite sides, should be offset a minimum of 200 feet centerline to centerline. Internal Circulation Design Guidelines 1. Local streets should have a minimum radius of 250 feet 25 m.p.h. design speed). 2. Cul-de-sacs should not exceed 1,000 feet in Length to facilitate emergency access. 3. Long straight roadway stretches should be avoided to discourage excessive speeds and thereby reduce safety hazards. 4. Streets should intersect at as near to a right angle as possible, and at not more than a 15 degree skew. 1Z S. All curb return radii should be 35 feet. 6. Street grades should not exceed 10 percent. 7. Streets should intersect others on the outside rather than the inside of a horizontal curve. S. streets should not intersect on a crest vertical curve. Left Turn Pockets Intersections should be designed to accommodate the anticipated vehicle volumes without requiring that vehicles queue up to com- plete the various maneuvers. where vehicle speeds are high and there are appreciable volumes making left turns and delaying through traffic, the safety and capacity of an at -grade inter- section can be improved by providing a left turn pocket. In general, left turn pockets are not needed until left turn peak hour volumes are at least one vehicle per minute. At project buildout, 1,300 morning peak hour trips are expected. of these 1,300 trips, forty percent (520) will be westbound on Golden Springs thereby making a left turn into the project site. Using the 45-55 percent split on the two project access points, the peak hour left turn movements will exceed the one vehicle per minute criteria. Given the 50 mile per hour speed of Golden springs, the left turn storage pocket length should be 250 feet with a 120 foot taper for a total of 370 feet. Bicycle Trails A bicycle trail is designated along Golden Springs Drive. As the project develops, appropriate bicycle trail striping should be installed. 13 Average Trip Leith Table 4 provides information on average trip length. For this study trip lengths of 9.8 miles and 3.5 miles are used for the industrial -office and restaurant trips respectively. Vehicle Miles of Travel Based upon the average trip lengths noted above, the project will generate 113,862 miles of travel. Table 5 provides the VMT mileage breakdown for each land use. it should be noted that the vehicle miles of travel estimated above are not directly indicative of the air pollutant loading that will result from this project. The future residents of this site exist today and probably live in this air basis. By re- locating, their current pollutant emissions will probably remain almost constant, on an overall basis, and simply be displaced.. Additionally, vehicle miles of travel are not directly proportion- al to air pollutant emissions. other factors including cold starts, speed of travel, congestion, and vehicle age and main- tenance strongly influence emission rates. 14 TABLE 4 ONE-WAY TRIP LENGTHS BY LAND USE Land Use Residential Commer vial Employment High School Elementary School All Trips Trip Length Miles 6.9 3.5 9.8 (estimated) 2 (estimated) 1 (estimated) 7.2 SOURCE: Los Angeles Regional Transportation (LARTS) Base Year Report with the "estimated' numbers furnished by William Kunzman and Associates. LARTS data indicated the home -to -work trip is 10.5 miles and all "other" trips to place of employment is 8.3 miles. The 9.8 assumes two work trips for each "other" trip. 15 TABLE 5 VEHICLE MILES OF TRAVEL VMT) Land Use Trips Per Average VMT Day Trip Length Miles) Light Industrial 2,040 9.8 19,992 professional Office 8,400 9.8 82,320 Restaurants 3,300 3.5 11,550 Total 13,740 1.13,862 16 Appendices Appendix A - Glossary of Transportation Terms Appendix B - Explanation and Calculations of Intersection Capacity Utilization Intersection. Grand Ave. (NS) & Golden Springs Road Traffic Assignment Percent of Zone traffic making intersection Movements are multiplied by Zone Volumes, and summed to determine Vehicle Movements) Move-- ment Project Zone vehicle Volume In Out AM PM NT l i NR I NL I 5 I 70 20 ST SR 35 I I 460 160 5L ET I ER 5 ' 10 50 EL 35 I 80 370 WT WR I WL Entries are percents making movements. Zone Volumes AM 1300 240 PM 450 1050 T,i-ercarti nn - Vnl impq and Canarity utili2atinn Move- ment Lanes Capa city C} HourlyVolume (V) V/C Ratio Existing V/C Ratio w/Project Existing Project Total AM PM AM PM AM PM AM PM I AM PM NT 2 3200 110 410 110 PO4NRI11600403040300707 07 NL 1 1600 100 70 70 20 170 I 90 07 07* 1 11 07* ST 2 3200 100 460 07 14* 07 1 SR 1 1 16001 20 20 I 460 160 480 L 180 1 07 07 1 30 11 SL i 1 1600 I 90 1 230 I Iqn no.I 07* t 14 I 07* f 14 ET 2 3200 70 210 i 70 210 07 C7 07 07 ER 1 1 1600I 60 110 10 i 50 70 160 T07 07 07 10 EL I 1 1600 20 20 80 1370 100 390 07* 07*I 07* 24* WT** 2 3200 190 SO I 190 80 113* 07* 13* 07* WR** 0 0 210 100 210 100 I WL 1 1600 30 40 30 40 07 07 07 07 ICU 40 Level of Service A I= is sum of critical movements, denoted by asterisk (*} N = North, S = South, E = East, W = West T = Through, R = Right, L = Left Cembined for 17J Calculations: WT, WR 35 40 52 A A A Intersection. Grand Ave. (NS) & 60 Eastbound Ramp (EW) Traffic Assignment Percent of Zone traffic making intersection Movements are multiplied L__ 17- 17-1,,,,,oc and giumed to determine Vehicle Movements) Move- ment Project Zone Vehicle Volume In Out AM PM NT 4 5 10 50 NR 30 70 1320 NL ST 30 390 140 SR SL ET ER 5 70 20 EL i WT f WR WL Entries are percents making movements. Zone Volumes PM130 240M intersec-- j.uii Move- Lanes Capa HourlyVC VolumeV) Ratio V/C Ratio city Existing w/Project meet Existing Project Total W C) AM PM AM PM AM PM AM PM AM PM 2 3200 440 70 10 50 450 120 14* 1 07* 14* 07* NR 1 1600 130 110 70 320 k 2-0 0 4 30 OS 07 13 27 NL 2 3200 100 120 390 140 4.90 260 07 07 15 08 1 4 1600 I 1 10 10 1 10 10 1. 0 07* 07* 07* 07* 0 10 10 1 10 EWLI1160080440702015046007 28 10 29 1 1600 10 10 10 10 07* 07* 07* 07* ICU 28 21 28 21 Level of Service A A A A ICU is sum of critical movements, denoted by asterisk (*) N = North, S = South, E = East, W = West T = Through, R = Right, L = Left Combined for ICU Calculations: T, ER Intersection_ r'-ranr? Aya (NS) & 64 WastbQvMd Ramer (EW . Traffic Assignment Percent of Zone traffic making intersection Movements are multiplied by zone Volumes. and summed to determine Vehicle Movements) Move- ment Project Zone Vehicle Volume In Out I AM PM NT I NR 5 10 I 50 NL I I 5T SR I I SL ET ER EL WT I WR I I 390 140 Entries are percents making movements. Zone 1300 1 24 PM 450 1 1050 ntor.or-t;nn VOlvmes and Canacitv Utilization Move- ment Lanes Capes city C) Hourly Volume (V) V/C Ratio Existing V/C Ratio w/Project Existing Project Total AM PM S AM PM AM Pm I AM Ph. AM PM J NT I I I I NR 1 1600 440 80 10 50 I 520 130 28*I 07 33* 08 NL I 1 1600 0 5T SRSL ET 11 11600 0 ER 1 11600 0 I rig 0 3200 1 110 130 390 140 500 270 07 071 16 08* ICU Level of Service 28 07 33 08 A A A A ICU is sum of critical movements, denoted by asterisk (*) N = North, S = South, E = East, W = West T = Through, R = Right, L = Left nIntersection. rive (Colima Rd.)(EW) Traffic Assignment intersection Movements are multipliedPercentofZonetrafficmaking by Zone Voles, and summed to determine vehicle Movements) Move- Project Vehicle ment Zone volume In Out AM PM NT NR NL ST 5R SL 35 460 160 ER EL WT 40 160 WR 15 WL Entries are percents making movements. Zone Volumes 00 240 0 0EEP4 Intersection Volumes and Capacity Utilization V) V/C Ratio V C Ratio Move- c Lanes Capa Hourl Volume Existing w/Project city Existing Project Total C) PM AM PM AM PM ` AM PM AM PM AM 10 20 NT 1600 10 20 I 10 4 NR 0 l0 4 NL I 10 50 sT 0 10 50 20 40 l SR 0 ; 20 40 I SL 2 t 3200 180 I 300 7 460 200 ET 2 4 32200 517 000 10ER 0 10 I 50 2 EL 1 1600 210 150 WT 2 320q 300 1600 1 240 570 270 40 160 0 4 WR 10 1q 1Q 10 0 37 46 51 51 ICU A A A A Level of Service of critical movements, denoted by asterisk ICU is sum N = North, S = South, E = East, W = West T = Through, R = Right, L = Left Combined for ICU Calculations: NT,NR, NL ET,ER ST,SR, SL WT,rem Intersection. nicq Rr-arive (Colima Rcad) (EW) Traffic Assignment Percent of Zone traffic making intersection Movements are multiplied by Zone Volumes, and summed to determine Vehicle Movements) Move- ment Project Zone Vehicle Volume In Out AM PM Ni NR 10 1301 50 NL I I ST SR I SL 15i 1 200J 70 ET 1 35 I 460 160 ER 1 f EL 1 I WT I 1 15 1 401 160 WR 35 1 801 370 WL 10 1 201 110 Entries are percents making movements. Znne Volumes AM 300 240T1050pM1450 Tntprsecticn'Volumes and Capacity Utilization Move- meat Lanes Capa city C} Hourly Volume (V) V/C Ratio Existing V/C Ratio w/Project Existing Project Total AM PM AM PM AM PM AM PM AM PM NT 2i 1aa 140 NR l 1 1600 20 60 1130 5oI NL 1 1600 130 1 160 I 130 160 ST 2 3200 240 1 220 240 2201 I * SR 1 1600 270 I 230 270 230 17 I Q SL 1 1600 1 110 1110 3 200 70 1 310 180 I 07 07 9* I11 ET 2 13200 130 560 f 460 160 590 720 07 18* 18 2.3 ER 1 1600 70 200 I 70 200 07 13 07 13 EL I 1 11600 1 310 230 1 310 230 19* 14 19* 14* MW-T2 3200 180 230 1 40 160 220 390 07* 1 07 i07* 12* 1 -1 1600 1160 90 80 370 170 460 10 07 11 29 WL 1 l 1600 20 1 30 20 110 40 140 07 07* 07 09 ICU Level of Service 42 42 52 43 A A A A ICU is sum of critical movements, denoted by asterisk (*) N = North, S = South, E = East, W = West T = Through, R = Right, L = Left Old Brea Canyon Road (NS) & 60 Westbound Ramps (EW) Intersection: Traffic Assignment Percent of Zone traffic making intersection Movements are multiplied I—, 7--a Vn1iimPC_ Anti summed to determine Vehicle Movements) Move- merit Project Vehicle Zone Volume In Out PM NT NR I NL I ST SR 1 SL ET I I I 1 ER I EL WT WR WL Entries are percents making movements. Zone Volumes AM 130,Q1 2 4 PM 450 1050 c7_i. .-1 r3-, n ri tv !i 1-i I iTA t- Cnn Move- ment Lanes Capa city C) Hourly Volume (V) V/C Ratio Existing V/C Ratio Total Existing Project Total AM PM AM PM AM PM AMPM AM PM NT 2 132004 730 420 7 01 I 13 NR NL 1 j 16001 180 80 80 370 11* 07 16 ! 2 ST 1 2 3200 390 6601 I390 1 660I 1 1 1 SR 1 1600 100 I1 01 1 I 100 1 1 3.0I SL T I ER I I I 1 EL I I 1 WT *;7 0 1 U 10 1 10 1 WR 160ni 66oI 1 660 1 270 41 ! 17 41 17 WL ** 1 1 390 1 280 ICU Level of Service 36 41 55 67 A A A B ICU is sum of critical movements, denoted by asterisk: (*) N = North, S = South, E = East, W = west T = Through, R = Right, L = Left Combined for ICU calculations: WT, WR Intersection- Brea Canyon Road (S) & Pathfinder (EW) Traffic Assignment Percent of Zone traffic making intersection Movements are multiplied Inv 7.nnp VnIumRs. and summed to determine Vehicle Movements) Move- ment Project Zone Vehicle Volume In Out I Ali PM T I NR I I 51, 1 I ST I I I 1 SR 1 5L IIQ{ 20 11 ET I 1 ER EL I WT WR l0 130 1 50 WL Entries are percents making movements_ lone Volumes AIS 1300 240 PM 450 1050 Tntarcartinn Vniumps and Canacitv Utilization Move- ment Lanes Capa city C} HourlyVolume (V) V/C Ratio Existing W V/C Ratio W/Projec^t AM ?M Existing Project Total AM PM I AM PM AM PM AM PM NT I NR NL I ST SR 1 1 1 1600 1 10 1 1 7fOT I 1.0 I 07 1 07 1 07 I I 07 SL 1 11600' 210 250 20_L 110 1 2301 260 1 13* 16*1 14*1 Y 16* ET ** 1 1 1 1600 20 1 30 1 1 201 30 1 07* 07* 1 07* 1 07* ER I EL 0 io 10 1 1.0 10 1 -- WT 1 1600 1 30_1 20 I 1 301 20 1 07* 07* 1 07* 07* WR 1 1600 1 230 230 130 50 360 280 14 14 1 23 18 WL ICU Level of Service 27 30 28 30 A A A A ICU is sum of critical movements, denoted by asterisk (*) N = North, S = South, E = East, W = West T = 'T'hrough, R = Right, L = Left Combined for ICU Calculations: ET, EL Intersection: Diamond Bar Blvd. (NS) & Grand Avenue (EW) Traffic Assignment Percent of Zone traffic malting intersection Movements are multiplied by Zone Volumes, and summed to determine Vehicle Movements) Move- ment Project Zone Vehicle Volume In Out •I AM PM NT I i i NR I j NL i 3 40 10 ST i SR 2 I 30 10 SL I ET 1 ER 3 1 10 I 30 EL 2 I 10 20 WT I i WR i WL Entries are percents making movements. Zone Volumes AM PM I d r 4 a-+-;n Uni,rmnc mnri rAnari tv f7ti i i7Atinn Move- ment Lanes Capa city C) Hourly Volume (V) V/C Ratio Existing V/C Ratio w/Project Existing Project Total AM PM I AM PM AM PM AM PM AM EENT23200206021060777 NR 1 1600 40 20 I 40 I 20 Q7 07 7 Q7 NL i 1 1600 100 707 40 10 140 i 60 07* 0 7* 7* ST 2 3200 40 240 I I 40 240 I 07* Q8* 07* 08* I SR I 1 i 160C 1 220 500 1 Q 250 510 14 I 31 16 32 SL I 1 1600 I 40 I 80 1 I I 40 80 077 07 07 07 ET i 2 I 3200 200 i 310 1 I 200 310 I 07 IC) I 07 10 ER 1 1 1600 I 60 110 10 30 70 140 07 07 I 07 09 EL 1 11600 I 410 190 10 20 420 210 26* 12* 26* 13* WT 2 3200 220 200 I I 220 1200 07* 07* 07* 07* WR 1 1600 70 60 70 60 07 07 07 07 4vZ. 1 1600 20 60 1 20 60 07 07 07 07 ICU Level of Service 47 34 49 35 A A A A ICU is stun of critical movements, denoted by asterisk (*) N = North, S = South, E = East, W = West T = Through, R = Right, L = Left intersection: Northbound 57 Freeway Rasps (NS) & Pathfinder Road (EWy Traffic Assignment Percent of Zone traffic making intersection Movements are multiplied by Zone Volumes, and surmised to determine Vehicle Movements) Move- ment Project Zone Vehicle Volume In Out I AM PM NT NR I I NL I f 1301 50 ST I I I SR SL I ET ER I EL I I WT I WR I W'L Entries are percents making movements. Zone vclume_s 7M Tnt-araar.tinn Vn11=es and Canacity Utilization Move- ment Lanes Capa city C) Hourly Volume (V) V/C Ratio Existing V/C Ratio w/Project Existing Project Total AM PM AM PM AM I PM AM PM AM PM NT ** 1 10 10 NR ** 1 11600 60 180 60 180 07 12 07 1 NL I 1 160050 280 130 50 180 330 07* 18* 11* 21* ST I I I SR I I I f SL I I I I I I I ET i 1 11600 250 1 750 1 250 1 750 I 16 47* I 16 I 47* ER I I I II EL I 1 1600 1 30 30 30 30 I 07* 07 I 07* 07 WT 1 1 1600 1330 130 330 130 I 21* 08 I 21* 08 WR 1 1600 600 180 600 Tl80 38 11 38 I 11 WL ICU Level of Service 35 65 39 68 A 13 A B ICU is sum of critical movements, denoted by asterisk (*) N = North, S = South, E = East, W = West T = Through, R = Right, L = Left Combined for ICU Calculations: NIT, NR Intersection: Southbound 57 Freeway Ramps (NS) & Pathfinder Road .(EW) Traffic Assignment Percent of Zone traffic making intersection Movements are multiplied L_. 17--- Ana rtu mled to determine Vehicle Movements) ymove- ment Project Zone Vehicle volume In out I AM PM NT I NR I I NL I I ST I i SR 3 5L I ET I ER 10 20 110 EL I WT I ],0 I 130 1 50 WR l WL Entries are percents making movements. 7.,r .,e Tnl,rnGC AM 1300 240 PM 450 1 1050 Intersection volumes and Capacity Utilization nes Capa Hourly Volume (V) v C Ratio V/C Ratio7mentcityExistingw/Project Existing Project Totali AM PM AM PM AM PM AM PM AM PM NT I NR NL 5T ** 1 6 10 1 I SR ** 0 30 30 30 30 SL 1 1 1600 I 180 600 I I1$0 600 I 11* i 38* I ET I 1 1600 100 180 i I loom 1180 07* 11 07 ER 1 1600 280 50 1 20 1 110 300 160 18 07 I 1 EL II WT 1 1600 I 200 350 1 130 1 50 33C 400 I 13 22* I 21 WR I WL I 1600 180 60 180 60 11* 07__J 11* 07 29 60 41 63 IC(7 Level of Service A B A B ICU is sum of critical movements, denoted by asterisk N = North, S = South, E = East, W = West T = Through, R = Right, L = Left Combined for ICU Calculations: ST,SR AIR QUALITY IMPACT ANALYSIS Diamond Bar Industrial -office Park, Tentative Tract No. 39679 June 1991 Prepared by: rank. B. Wein, AICP 1332 Calle Linda San Dimas, California 91773 A. Setting The Diamond Bar area is located in the Los Angeles -Basin where the climate is normally pleasant and mild throughout the year. The Pacific Ocean acts as a moderating influence on the climate:, and the mountains and foothills that mark the inland boundaries of the coastal plain act as a buffer against the extremes of summer heat and winter cold that occur in the interior. Summers are sunny and dry as the large scale weather patterns allow Pacific storm paths to extend as far south as the Los Angeles area only during late fall, winter, and early spring. Pronounced differences in temperature, humidity, cloudiness, fog, sunshine, and rain occur over fairly short distances on the coastal plain and the adjoining foothills due to local topography and the decreasing marine effect further inland. In general, temperature ranges are least and humidity highest close to the coast, while precipitation increases with elevation on the ,_foothills. Diamond Bar lies within an inland valley area. Marine air covers this area most of the year, but air from the interior reaches the coast at times, especially during the fall and winter months. The most characteristic feature of the inland valley's climate is the night and morning low cloudiness and sunny afternoons which prevail during the spring and summer months and occur often during the remainder of the year. The daily temperature range is usually less than 250 in the summer, increasing to approxi- mately 300 in the winter. Hot weather is frequent during the summer with readings exceeding 900. When high tempera- tures do occur, the humidity is almost always low so that discomfort is unusual. Nigthtime temperatures are generally cool, but minimum temperatures average above 400 even in the coldest month (42a in January). Prevailing daytime winds are from the west, but night and early morning breezes I- Figure 1 - art Ivy I 1 TYPICAL SUMMER DAYTIME OCEAN WINOS TYPICAL SUMMER NIGHT DRAINAGE WINDS Noon to 7:00 PM) (Midnight to 5:00 AM) it . I +•., f TYPICAL WINTER DAYTIME OCEAN WINOS TYP}CALWINTER NIGHT DRAINAGE WINDS Noon to 5:00 PM) (Midnight to 7:00 AM) X= Project Site These maps snow dominant summer and winter wind patterns in the Los Angeles Basin. For the period of the day shown, the net transport of air onshore usuaily is greater in the summer, white the net offshore transport as a rule is greater during the winter. Whether there is air movement or air stagnation during the morning and evening hours, before these dominant air flow patterns take effect, is one of the critical factors in determining the smog situation on any given day. are usually light and from the east and northeast. (See Figure 1). Daytime westerly flow is strongest in the summer with the nightime east wind better developed in the winter. Strongest winds are from the west and north and are associated with winter storms. At times during the fall, winter and spring gusty, dry, northeasterly Santa Ana winds flow over Southern California mountains and through passes toward the coast. However, the extremely dry air and dust clouds associated with these winds can be expected several times each year. Precipitation occurs mainly in the cooler months with about 85 percent falling from November through April on the average. The visibility in the Diamond Bar area is frequently restricted by haze, fog, or "smog". Low visibilities are favored by a layer of moist marine air trapped below warm dry air aloft. The zone of contact of the two unlike air masses is called the "temperature inversion", and prevents the water vapor and pollutants in the marine layer from dispersing into the atmosphre (See Figure 2). Light fog occurs at sometime nearly every month, but heavy fog is observed least during the summer while light fog is more common at this time. The generally clear skies, onshore flow, and strong temperature inversion make the late summer a favored time for heavy photochemical smog over the Las Angeles Basin. The persistent westerly winds tend to minimize smog buildup; however, primary contaminants do present a problem. The South Coast Air Quality Management District does not operate an air monitoring station in Diamond Bar. The closest air monitoring stations are located in Pomona, about 5 miles to the east of Diamond Bar, and in La Habra, about 8 miles to the south of Diamond Bar. Table l contains pollutant cc 7entrations for 1979, the most recent year for which air quality data are available. As shown in Tables 2A- 3- Figure 2 TYPICAL INVZRSIONS r 3000* SURFACE INVERSION 49 G 2000' inversian top 100fl' E 4E inversion layer inversion base SFC Q°F 90°F 60°F 70OF a0°F 4000' 3000' 2000' 1000' SFC 4A00' 3000' 200Q' lo00' inversion layerEI1PExp , Mixing height RQr uwersion bass c= i 6 nOe r34a enve - rinoF onoe SFC r 40° F HIGH INVERSION inversion base _ ZE pEP r inversion top inversion layer , 1 mixing height 50— F 60— F 7 0— F &C Figure 2 plots air temperature on ;he X axis versus aititude on ,he 'f axis with diagrams of typic d inversions: surface - based, low and ' irin inversions. Most of the air oollutants are confined to the air volume below the base of any ur:ersicti. or in a very shallow layer rioar :he ground in the case or a surface inversion, TABLE L V N AL AVERAGE C%C E^TC RAT IONS 1978 1979 AREA CEDE Nr2* S(?2* TSP t;02* S02* TSP, ANGELE CCUNrY PF(i) PF M) uc/7rt3) PF24) ug/m3) KI Los ,ngeles 7.6 1.7 89.6 6.4 1.3 94.1 060 Azusa E:SCN 6.0 0.6 101. 8 4.2 0.7 101.0 069 Burhank ESFV 8.2 1.1 7.8 1.0 071 a Jest IL A. NNcn 6.4 1.1 bF. 5 7.3 0.9 775 072 Long Beach SOCO 6.6 1.3 6.9 0.9 074 Reseda tIRFV 5.2 0.5 1 -07-4 6.0 0.3 9. 8 075 FtmCna FNA 7.1 1.1 5.9 0.6 076 Lennox S10 6.3 0.6 F.9 6.6 0.8 Tro 080 Whittier SOEA 7.0 1.3 7.3 2.3 081 Ne%ha L l SCRV 3.6 0.9 2.5 0.9 082 Lancaster 97VA 1.7 1 1.7 79. 9 083 Pasad ena WSGV 8.4 1.5 92.5 6.9 1.1 86.8 084 LynwDod SCLA 5.4 0.8 112.7 6.1 1.0 103.1 085 Pico Rivera SSGV 7.5 0.6 113.0 7.2 0.8 103.5 MN(m COUNTY lt,, n .ein ANAH 4.7 0.4 88.8 5.5 0.6 88.1 3177 La Habra LI Ii13 6.7 0.7 105.4 6.Oh) 0.6 92.8 3185 Costa Mesa COST 2.9 0.4 64.9 3.9 0.4 89.0 3186 El Toro TORO 67.9 71. 7 3188b San Juan C. SJCA 62.3 3190 Los Alamitos LSAL 0.6 92.9 0.8 87.4 3191 Santa Ana C. SAC:1 81.2 81.1 TMIDE COUf1rY 4137 Palm Springs PLSP 61.8 0.6 53.9 4139 Indio r1co 770 88.5 83.5 4144 Riverside RIVR 3.5 0.9 138.2 3.7 0.9 151.6 4150 Banning BA.^1t1 61.9 77.2 1 BERN LRD1 *10 CO=Y 51 1 San Bernardino SURD 2.7 1.1 94.2 3.5 1.0 1 1 1. 5 5155 Barstow WIS 1.4 70.8 1.5 65.8 5165 Redlands RIEDL 2.8 83.8 2.1 96.3 5166 Rialto RL-ki. 82.4 94.8 5173b China QITIT 132.3 5175 Upland UPL' 0-7 101.2 97.7a. 5176 Fontana Ot7 ZZ7 1.3 108.6 T-$h) 1.0 116.4 5184b Big Bear BGBE 42.5 5181 Lake Gregory T-KCIR 42.6 T-7-3 5185c Ontario Airnort ChVi R 77.6 5190 Victorville VCIIL. 63.2 77.9 5191 d 29 Palms TNP5 53.9 51.1 5192e Trona TRCN i 98.2 111.7 a. Station ,.as relocated and number changed to 086 effective 8-1 -79. b. Station closed Azgust 31, 78 f. Station closed Sept. 31, 80 c. Station closed 'May 1, 78 g. Less than 12 rxnths d. Station opened June 78 h. Eleven Months of Data e. Station closed Jerre 78 Annual AritiTnetic Mean Annual Gecmetric `lean 5- TABLE 2A NUMBER OF DAYS STATE STANDARDS WERE EXCEEDED AND ANMlAL MAXINIUM HOURLY AVERAGES 1979 OZCW Cd.RB(Id 11aZ=Ec) DISaX ) vlTRcEi DIOXIL£ Days a) Nax b) Days Kax. Days Max- Clays lax. Station No. Location Code LOS ANGELES COUNTY 001 Loa Angeles CENT 114 0.34 4 21 0 036 14 0.47 060 Azusa ESGV 178 0.45 0 11 0 023 4 0.40 069 Burbank ESFV 137 0.39 36 27 0 031 27 0.35 072 Long Beach SOCO 31 0.21 7 20 0 042 22 0.47 074 Reseda WSFV 146 0.33 16 23 0 014 6 0.31 075 Pomona PWVA 167 0.35 0 14 0 027 6 0.34 076 Lennox SWCO 17 0.19 35 27 0 1035 13 0.38 080 Whiccier SOEA 80* 0,32* 5* 20* 4* 064* 10* 0.37* C81 Newhall SCRV 177 0.32 0 11 0 031 2 0.29 082 Lancas cer** AN`VA 80 0.20 0 15 NM W 0 0.1.0 083 Pasadena WSGV 191 0.44 1 17 0 025 14 0.36 084 Lynwood SLA 52 0.29 38 30 1 051 L2 0.37 085 Pico Rivera SSGV 150 0.39 7 16 0 025 L3 0.4L 086 West L.A. NWCO 90 0.26 18 24 0 027 42 0.46 ORANGE COUNTY 3176 Anaheim ANAH 61 0.33 14 19 0 019 8 0.33 3177 La Habra LAMB 112 0.38 2 20 0 035 0 0.24 3185 Costa hesa COST 26 0.21 5 21 0 018 4 0.29 3186 E1 Toro TORO 57 0.32 W fit 0 022 V 14 3190 Los Alamitos LSAT. 50 0.26 ri NH 0 038 i+i`t DM 3191 Santa Ana C. SACN 95 0.39 tit W 0 005 qA W RIVERSIDE COUNTY 4137 Palm Springs** PLSP 112 0.24 0 5 0* 022* 0* 0. 10* 4139 Indio** INDO 45 0.21 0* 11* 0* 027* 0* 0.09* 4140 Prado Park PRPK 160 0.33 0 9 t{ LIM 91 W 4144 Riverside RIVR 186 C. 34 0 10 0 030 0 0.20 4149 Perris PERT 151 0.25 0 7 R4 W MI W 4150 Banning** BANN 123 0.27 0 5 NI W W tfii SA.N BERNARDINO COUNTY 5151 San Bernardino SNBO 164 0.34 0 10 0 035 0 0.23 5155 Barscov BARS 32 0.16 0 12 W W 0 0.16 5165 Redlands REDL 173 0.34 0 9 MI tM 0 0.19 5174 Upland UPLA 163 0.37 0 11 0 033 L 0.30 5176 Fontana FONT 197 0.42 0 20 0 039 0 0.13 5181 Lake Cregory LKCR 166 0.40 0 12 IN DTI W I29 5190 Vicrorville** VCVL 90 0.21 0 8 W hS 0 0.1_3 5191 29 Palms** TNPS 46 0.13 0 8 W MI NN M 5192 Trona** TRON 6 0.11 0 12 t,M 11 rl° 0.06* a) DAYS -number of days exceeding state scandard for indicated poI.lucanc. b) MAX -single highest 1-hour (for S02 24-hour) average of the year in parts per million. c) All exceedances and maxima are of the 12-hour scandard. The 1-hour standard was not exceeded. d) All exceedinces and maxima are of the 24-hour scandard. The 1-hour standard was noc exceeded. Less than L2-7ionths data. Southeast Desert Air Basin stations, All others in Souch Coast Air Basic_ NM - not measured 20, Air Quality Standards for each pollutant (except hydrogen sulfide) were exceeded in 1979. B. IImpact 1. Short-term Impacts: The construction phase of the project will produce two sources of air pollutant emissions. Exhaust emissions, including diesel odors from construction and grading equipment, and dust generated as a result of earth movement and equipment traffic over temporary roads. Based on field measurements of dust emissions from industrial park construction projects an approximate emission factor for dust emissions has been determined by the U.S. Environmental Protection Agency as equal to 80 lbs. per acre per day of activity. The proposed project encompasses 233 acres of which 74 will be developed and graded. Dust emissions from grading may approach 1,800 lbs. per day. The impact of fill will also contribute to dust generation. Dust emissions may also occur during building construction due to truck traffic on dust - laden roads. The dust emissions may cause a short-term nuisance to persons who reside and work in the vicinity of the project. The project engineer indicates that the proposed industrial park will involve up to 12 months for grading, with a probable maximum of 50 construction workers on -site per day. Construction of the industrial park will occur in several phases over a five year period (1982-1987), with a probable maximum of 100 workers on -site per day. Assuming that each worker travels 20 miles per day (home -work -home), the construc- tion and grading will generate 3,000 vehicle -miles travelled per day, resulting in the following maximum daily emissions for. the proposed industrial park (based on 1980 emission factors): Carbon Monoxide 111.0 pounds/day Nitrogen Oxides 12.6 pounds/day Sulfur Oxides 0.75 pounds/day Particulates 2.25 pounds/day Hydrocarbons 7.2 pounds/day 7- Table 23 NU"111ER OF DAYS STATE STANDARDS w'ERE EXCEEDED AND XNNZ;AL PALLY/'K'PNTHLY AVERAGES 1979 5P 5UZA-177 LEAD No. of Da;r:i'1) 1aX. 1') Daysa) i1=mac. b) `4 nthsa lax. ")smp l g Station No. Location Code GS AfICcLES COU`17'Y 001 Los Angeles CF':'r 31. 267 2 29.7 6 2.82 61060AzusaESGV35237024.5 1 1.43 059 Burbank ESFV 111 tV W 11 W 1114 MT072LongBeachSOCO21N4IN1N•1 WI""i! Reseda WSFV 23 230 0 22.9 3 2.24 b0075Pcmc)na MYVA N4 1-1 W IM N! M R4076LennoxSWCO21206336.1 7 3.91 60080WhittierSCEA, 11Z1 1*11 1114 tV vI MT WC81ec:ha 11 SCE J cs1 N' V M! W N•1 W082Lancaster** AITVA 22 339 0 14,4 0 1.13 58083Pasadenai:SGV 27 193 1 26.4 5 2.54 59084Ly-iwaod SCi.A 32 252 5 28.1 5 3.67 61085PicoRivera55GV36417330.6 4 2.24 61086WescL.A. M4C0 7 134 0 23.5 2 2.17 61 ORANGE COUNTY 3176 Anaheim ANAH 25 301 0 24,4 2 1.90 60 3177 La Habra LAMB 30 300 2 26.2 2 1.89 60 3185 Cost? mesa COST 26 252 0 24.2 3 1.90 61 3186 El Toro TO RO 13 219 0 21.5 0 0.72 61 3190 Los Alamitos LSAL 25 327 26.6 3 2.71 61 319.1 Santa Ana C. SACN 25 247 0 23.1. 0 1.20 61 RIVERSIDE: COLMITY 4137 Pal., Springs+* PLSP 4 188 0 L.0 0 0.44 4139 Indio** UNDO 19 211 0 13.9 0 0.52 74140PradoParkPR°K N4 W MT W M1 11.1 x 4144 Riverside PrVR 52 374 3 28.1 0 1.30 114149PerrisPERT1121N1iMN!1 N1 AI4 1:iM4150Banning** a'UN N 28 193 0 20.0 0 0.61 61 SAN AERNA1:01h0 COUNTY 5151 San Bernardino SURD 36 290 5 31.7 1 1.49 61 5155 Barstow BARS 9 308 1 27.0 0 0.45 61 5165 Redlands RFDL 33 242 0 23.7 0 0.82 555l74UplandUPLA25* 256.' o* 32.0, 0* 1.43 45 5176 Fanr;ina r0NT 40 320 8 32.3 0 1.20 605181LakeGregoryY.c:R 9 132 0 13.9 0 0.48 59 I'M Victorvi l leh* VCVL 23 358 0 13.0 0 0.49 61 501 29 P117sn* TN PS 2 137 0 9.4 0 0.19 59 i192 Tronn** TRON 26-= 36: - 39 Y 0: 0.29 47 r} 'Turlher of lays /lvrrrhs vivinting state scandard fnr indicated pollutant. h) Single highest "!-hour lvernre of the year in C) Single highe!it rionrhly nver.jv,e of Ghe year in :ig/m'. d) Neasure"ents .-ire rrnr-iajL+ maele on every sixth day. Less than 12 manths Mara. SauCI1--r Devert ,1i,r lasin scaCions All others in South Coast Ai.- Basin not rye; ;t.:red 8- TABLE 2C OZONE NUMBER OF DAYS EPI:iODE LEVELS WERE REACaZD IN 1979 WITH COMPARISON TO 1978 STAGE I STAGE 2 hourly average t 0.20 pFm) (hourly wmrage z 0.35 ppm) 1978 1979 I978 1979 Station No. Location Code LOS ANGELES COUNTY 001 Los Angeles CENT 16 14 0 0 060 Azusa ESGV 76 71 5 10 069 Burbank ESFV 30 26 0 2 072 Long Beach SOLO 0 1 0 0 074 Reseda WSFV 16 24 0 0 075 Pomona PSWVA 72 57 9 3 076 Lennox SWCO 2 0 0 0 080 Whittier SOFA 18 16 1 0 081 Newhall SCRV 45 54 0 0 082 Lancaster*'* AMA 5 1 0 0 083 Paaadsna WSGV 85 78 8 11 084 Lynwood S24 0 6 0 0 085 Pico Rivera SSGV 48 38 5 3 086 west L.A. KWCO 10 7 0 0 ORANGE COUNTY 3176 Anaheim ANAH 13 5 0 0 3177 La Habra LAHB 24 21 1 1 3185 Costa Mesa COST 3 1 0 0 3186 El Toro TORO 10 6 0 0 3190 Loa Alamitos LSAL 5 2 0 0 3191 Santa Ana C. SACN 9 14 0 2 RIVERSIDE COEJt`iTY 4137 Palm Springs** PLS P 3 3 0 0 4139 Indio** INDO 0 1 0 0 4140 Prado Park PRPK 34 24 2 0 4144 Riverside RIVR 62 55 2 0 4144 Perris PERI 38 26 0 0 4150 Banning** BANN 22 22 0 0 SAN BERNARDINO COUNTY 5151 San Bernardino SNBD 72 62 1 0 3155 Barstow BARS 0 0 0 0 5165 Redlands REDL 64 57 2 0 5174 Upland UPLA 68 59 2 2 5176 Fontana FONT 98 95 11 9 5131 Lake Gregory LKCR 73 80 0 3 5190 Victorville** VCVL I 3 0 0 5191 29 Palms** TNPS 0* 0* 0* 0* 5192 Trona** IRON 0 0 0 0 Less than 12 months data. Southeast Desert Air Basin stations. All others in South Coast Air Basin. Q TABLE l D NU4BER OF DAYS NOT MEETING FEDERAL STANDARD 1979 Oil) Mr ) DI) TSPd) U&) Station No. Location Code LnS ANGELES COUNTY 001 Los Angeles CENT 62 20 0 1 2 C60 A _9a ESGV 149 0 0 0 0 069 Burbank ESFV 92 57 0 NH NM 02 Long Beach SaCO 11 21 0 NM NM Reseda WSFV 103 32 0 0 1 07"; Pomona PWVA 126 2 0 NM NM 076 Lennox SWCO 7 54 0 0 2 080 Whittier SOEA 47 19 0 NM NM C 8l Newhall SCRV 140 0 0 NM NM C32 Lancaster** ANVA 40 0 NM 2 0 G33 Pasadena WSGV 150 25 0 0 1 084 Lynwood 5CIA 26 70 0 0 2 035 Pico Rivera SSGV 110 26 0 1 2 086 West L.A. NWCO 44 33 0 0 1 c3RANCF. COUNTY 3176 Anaheim ANAH 27 35 0 1 1 3177 La Habra LAHB 62 23 0 1 1 3185 Costa Mesa COST 16 18 0 0 0 3186 El Toro TORO 24 NM 0 0 0 3190 Loa Alamitos LSAL 18 Nil 0 1 1 3191 Santa Ana C. SACN 47 NM 0 0 0 RIVERSTnE COUNTY 4137 Palm S rings** PLSP 49 0 0 0 0 4139 Indio*' INDO 16* 0* 0 0 0 4140 Prado Park PRPK 114 0 NM NM NM 4144 Riverside REVR 151 0 0 11 0 414,9 Perris PE'RI 118 0 NM NM NM 4130 Banning** BANN 84 0 NM 0 0 SAN BERNARDINO COUNTY 5151 San Bernardino SNBD 140 0 0 2 0 3155 Barstow BARS 6 1 NM 1 0 5165 Redlands REDL 139 0 NM 0 0 5174 Upland UPLA 135 0 0 0 5176 Fontana FONT 164 5 4 5181 LakeGreggory LKGR 139 0 NM 0 0 5190 Victorvilla** VCVL 31 0 NM 1 0 5191 29 Palms** TNPS 6 0 NM 0 0 5192 Trona** TRON 0 0 NM 4 0 a) Based on number of days 0, > 0.12 ppm, 1-hour average. b) Based an number of days CO > 9 ppm, 8-hour average. The 1-hour average was not exceeded.) c) Based -on number of days SO, > 0,14 ppm, 24-hour average. d) Based on number of days TSP > 260 og/mJ, 24-hour average. e) Based an number of quarters Pb 1.5 ug/m', quarterly average. Less than 12 months data. Southeast Desert Air Basin stations. All others in South Coast Air Basin. S - not measuruL! 10— 2.a. Long -Term Impacts: The proposed industrial park will result in two types of long-term air quality impacts: vehicle emissions, a result of cars travelling to and from the proposed development; and stationary emissions, a result of electrical generation (off -site), natural gas consumption on -site). 2.b. Stationary Stationary emissions on -site will be generated primarily by those activities which consume natural gas on -site, i.e., space heating and water heating. The gas consumed for these uses has been estimated as 103,000 cubic feet per week -day. The calculated emissions are presented in Table 3A. The contribution of project emissions to the total emissions for the source receptor area in which the site is located is negligible. The stationary emissions resulting from the increase in electrical energy demand will not produce emissions on - site but rather at electric generating plants located through- out the electrical generating network. The emissions from the generation of electricity for this project are presented in Table 3B, assuming an electrical energy demand of 62,700 kilowatt hours (KWH) per day. 2.c. Mobile An estimate of the total motor vehicle emissions generated by traffic associated with the proposed project is shown in Table 4, assuming project traffic to be 13,740 vehicle trips per day and a total vehicle miles travelled of 113,862. C. Mitigation Measures Measures to reduce project -related vehicular emissions relate to the overall number of vehicle -miles travelled that are generated by use of the industrial buildings. The follow- 11- Pollutant Carbon Monoxide Total hydro - Carbons Nitrogen Oxides Sulfur Oxides P ar ti cu- lates Notes TABLE 3A PROJECT EMISSIONS FROM USE OF NATURAL GAS (ON -SITE) Emission Factor (a) l.bs/1000 Emissions Cubic Feet Lbs/Da NEGL NEGL NEGL NEGL 0.116 11.9 NEGL NEGL 0.019 1.9 a) Air Quality Handbook for Environmental Impact Reports, South Coast Air Quality Management District, February 1977. Pollutant Carbon Monoxide Total Hydro- carbons Nitrogen Oxides Sulfur oxides Particu- lates Notes: TABLE 3B PROJECT EMISSIONS FROM GENERATION OF ELECTRICAL POWER (OFF -SITE) Emission Factor Emissions Lbs/1000 KWH (a) Lbs/Day 0.2 11.2 0.18 10.1 2.3 129.3 5.3 297.9 0.401 225 a) Air Quality Handbook for Environmental Impact Reports, South Coast Air Quality Management District, February 1977. 13- TABLE 4 ESTIMATED MOTOR VEHICLE EMISSIONS ASSOCIATED WITH PROPOSED PROJECT Total Area Emission Vehicular Percent Factor (a) Emissions Emissions of Area Pollutant Grams/Mile Lbs/Day Lbs/Da (b) Emissions Carbon Monoxide 14.8 3,712 278,410.4 1.3 Total Hydro - Carbons 1.4 351 29,049.3 1.2 Nitrogen Oxides 1.9 765 41,839.5 1.7 Sulfur Oxides 0.2 50 1,724.1 2.9 Particu- lates 0.31 78 4,848.4 1.6 Notes: a) Air Quality Handbook for Environmental Impact Reports, South Coast Air Quality Management District, 1960. 1988 Composite Emission Factor for 95% Light Duty Vehicles, 5% Heavy Duty Vehicles. b) Average Emissions for the Year 1976; SCAQMS for the Pomona -Walnut Source -Receptor Area. 14- ing measures are suggested to the County as conditions of approval of the proposed industrial park. promote ride -sharing, i.e., car-pools, vanpools, etc., among workers; this will have the potential to reduce daily commuter traffic, and on -site parking demand; and promote use of public buses and encourage major tenants to provide monthly bus passes or other incentives to employees as employee benefits. These measures will reduce potential, long-term im- pacts to less than significant levels. ing: normal wetting of the project site during grading; and encourage contractors to promote car-pooling/ ride -sharing among construction workers. other mitigation measures available include the follow- limit the commercial, light and limited manufacturing uses to those with minimal emissions of particulates, nitrogen dioxide, hydrocarbons, carbon monoxide, and/or other pollutants; those uses that are known to cause air pollution should be required to have all the appropriate air pollution equipment necessary for abatement; and implement the energy conservation measures; a reduction in energy consumption should result in lower pollution emissions. 15- i - 4 F - '1• 'M -. 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M ....,:lr i`?a. :.,Y-..4• =x. i -£ .3.: i.. .. . 9k. _+zs r-!, fs:f: !e•. L. .f.- •'`_. :,ifd...•,Xt. -.;,: ._ ti_i BIOLOGICAL SURVEY OF TENTATIVE TRACT NO. 39679 Prepared for: Bill Richardson & Associates By: Ronald D. Quinn, Ph.D. professor of Biological Sciences June, 1981 TABLE OF CONTENTS Paac I. INTRODUCTION ................................... 1-3 II. PLANTS ......................................... 4 A. Methods and Materials ...................... 4 B. Plant Associations ......................... 5 1. Oisturbed Grassland .................... 6 2. Coastal Sage Scrub ..................... 6-7 3. Tall Shrub ............................. 8 4. . Walnut/Oak Woodland .................... 8-9 5. Rock Outcrops .............. ...... .. 10 6. Freshwater Spring ...................... 10 C. Project Impacts ............................ 11 III. MAMMALS, REPTILES, AND AMPHIBIANS .............. 12 A. Methods .................................... 12 B. Wildlife Habitat and Species ............... 12 1. Disturbed Grassland .................... 13 2. Coastal Sage Scrub ..................... 13 3. Walnut/Oak Woodland ........:........... 14 4. Freshwater Spring ...................... 14 S. Tall Shrub ............................. 14 C. Project Impacts ............................ 15-15 IV. BIRDS .......................................... 17 A. Methods .................................... 17 B. Habitat Use ..................... .... ... 18 1. General ................................ 13. 2. Disturbed Grassland .................... 19 3. Walnut/Oak Woodland .................... 19 4. Walnut/Oak Edge ........................ 20 5. Coastal Sage Scrub ..................... 21 6.. Tall Shrub ............................. 21 C. Project Impacts ............................ 21 1. General ................................ 21 2. Disturbed Grassland .................... 22 3. Walnut/Oak Woodland .................... 22 4. Coastal Sage Scrub ..................... 23 5. Tall Shrub ............................. y LIST OF TABLES AND FIGURES Page Table1 24-33 Table2 34 Table3 35 Table4 36-38 Table5 39-42 Table6 43 Figure1 44 INTRODUCTION The project area encompasses 230 acres of gently rolling, to steeply sloping (approximately 40 percent slope) terrain in the western portion of the community of Diamond Bar, located in eastern Los Angeles County. This area is bounded by State Routes 57 and 0'0 to the west and southwest, Golden Springs Drive to the west and northwest, and residential development to the north and east. Geographically, the area is part of a range of hills contiguous with the Puente and 14hittier Hills to the west. The long axis of this portion of the range extends approximately southwest and northeast. Elevation varies from 620 to 1,040 feet A.S.L. The site is on the north side of a long east -west ridge, with this northerly slope dissected by several north -south canyons a-; ridges. The topography creates varying site conditions wh,1 support several types of plant communities. Canyons and ridges are the most natural corridors for the movement of larger terrestrial animals from one place to another. These slopes and ridges run directly into extensive urban developments and, therefore, the site has little value as a migration corridor for animals. Additionally, extensive encroachment by urban and industrial development and major roadways has isolated these plant and animal communities except birds). This isolation severely.limzts movements between these animal communities and nearby communities common to the larger adjacent hills. 2 This region of southern California contains drought tolerant plant species and historically has experienced periodic disturbances by fire. Rainfall occurs primarily during the winter months, followed by a long season of hot and dry weather. It is during this dry period that the vegetation is particularly susceptible to wildfire. The adaptations of some plant species allow for their recovery after the fire but other species, such as oak and walnut trees, are stressed by frequent fires. The communities containing these tree species require relatively long periods of time between fires for the trees to become well established. Use of these hills by man for the past two centuries has increased the relative frequency of fires such that the types of vegetation which are fire tolerant have become much more widely established than the natural ,mosaic of types that undoubtedly occurred prior to this time. Fire has favored such vegetation types as grasslands and coastal sage scrub. Other disturbances have contributed to the ecological changes this area has undergone over the past 200 years. Cattle grazing on the grassy slopes has probably been intense for close to 200 years. Grazing alters the plant communities by removing the more succulent and palatable species and encouraging the widespread increase in the inedible plants. The success of these weedy plant species stems not only from their lack of palatability, but also from their success at occupying the exposed and disturbed soils resulting from repeated trampling. Annual grasses and (orbs, introduced 3 from the Mediterranean during Spanish times, have all but replaced native species of plants on all of the heavily grazed hillsides within the project site. These Needy species have become a corhponent of every plant community on the project site. Other types of vegetation removal and soil disturbance on the site include an extensive network of dirt roads, trails and vehicle tracks, geological survey pits and test profiles, and cut or fill from adjacent developments. Despite the highly disturbed nature of portions of the site, and the pervasive inclusion of exotic plants throughout, some of these communities nonetheless represent an increasingly rare type of ecosystem. The walnut/oak woodlands, the tall shrub associations, and the freshwater spring within the project boundaries are becoming scarce in southern California. Dudleya multicaulis, a small succulent plant, was found within the project boundaries. This plant has been listed as a sensitive species by the California Native Pant Society, indicating that its presence on any site is a relatively rare occurrence. Two previous environmental assessment reports have examined a 50-acre area which is included within the 230 acres considered in this report. This study is based on more field time over a larger area at a more favorable time of the year and is, therefore, more comprehensive and accurate than these previous reports. 4 PLANTS Methods and Materials The project site was surveyed for vascular plant species for four days during the month of May, 1981. Voucher specimens were collected for species of plants which could not be iden- tified in the field. These species were later identified with the use of dichotomous keys or herbarium records at California State Polytechnic University, Pomona. The California Native Plant Society Rare Plant Inventory was checked for sensitive plant species having potential localities within the project boundary. After a preliminary survey of the vegetation at the site, a classification of dominant plant associations was defined for the project. This classification generally follows that of Thorne (Rancho Santa Ana Botanical Garden, Claremont) and Munz (A Southern California Flora, 1974), but is modified to accommodate the highly altered nature of several of these communities due to disturbance. Black and white aerial photo- graphy (1:400 scale) of the project site was used to map these plant associations (Figure 1). This information was trans- ferred onto transparent mylar and the aerial extent of each association determined by planimetric techniques. The cut and fill (daylight) line of the maximum extent for the project construction was estimated on the plant association map, so that the percent removal of each association type could be calculated. The localities of any sensitive (rare) plants 5 was determined in the field, and those localities were noted on this map. All coast live oaks (Quercus a rifolia), having trunks larger than approximately eight inches diameter at breast height (OBOE) and which fell within the area to be cut or filled, were surveyed and counted. A determination of the percentage of oaks remaining after the project was also estimated during the survey and from the aerial photography. Plant Associations A survey of the vascular plants on the site disclosed 98 identifiable species. Table 1 lists these species, arranged by plant families, together with common names and the plant associations in which they are most likely to occur. These species fall within one or more of six primary plan. associations. Two of these associations, the coastal sags: scrub and the disturbed grassland, can be conveniently brcEken into two additional types based on the level of grazing disturbance and the general slope and slope aspect. Each of these associations will be discussed in the following sections. These associations are mapped in Figure 1. Table 2 details the calculated acreages of each association occurring within the project boundaries, and the relative percentage of the total area each occupies. r Disturbed Grassland The disturbed grassland is one of the plant associations which has been fundamentally altered by past human activities. Exotic or introduced plants predominate in this association and have been maintained by a long history of repeated fires and heavy cattle grazing. This association can be conveniently divided into two major types, a grazed field type and a disturbed roadside type. These two types differ in total number of plant species and in the relative abundance of non-native species. These differences are due to differential degrees of disturbance. In both types, the most abundant plant species are Brassica campestris and Bromus diandrus, both of which are introduced annuals. The grazed fields support 45 species of plants and occupy a much larger area than the roadside type. The roadside type supports 30 species of plants, the majority of which are weedy and totally inedible as forage. The disturbed grassland association is not unique either to this site or to the Diamond Bar area. It commonly occurs in fields and other waste areas throughout southern California. Coastal Sage Scrub The coastal sage scrub associations occurring within the project boundaries contain species of plants which grow to heights of less than three feet and occupy sites which have maximum exposure to sunlight and are generally steep -sloped. Although the plants of this association are the species 7 typically observed in undisturbed conditions (Artemisia californica, Salvia mellifera, S. a iana, Ml mulus lonciflor'.Js, Eriogonum fasciculatum), the association as found here could hardly be considered representative due to its highly dist1rloed condition. It is not entirely clear whether the establishmc." of this association an the site is from remnants of a pre - grazing sage association that was never completely removed by past disturbance, or whether grazing and fire has in fact encouraged the secondary establishment of this type. In any case, the coastal sage scrub occupies areas which are less accessible to cattle grazing and which have reportedly burned as recently as 1972. As with the previous associations, this coastal sage scrub can be divided into two distinctive types. One type is characterized as a heavily grazed, maximum exposure site where vegetation is low -growing and where perennial species occur but sparsely. This type has a ma,jor element of exotic annual and perennial species of plants, with a total of 51 species. The second type approaches a more natural species composition because it has been less disturbed by grazing. Dative perennial plants predominate, attaining maximum heights of more than three feet. The total number ol" plant species (54) is virtually the same as the preceding type, but consists of a much higher proportion of native annuals and perennials. 0 Tall Shrub A third category of plant association is called the tall shrub association. Larlier reports called it chaparral, but this is inaccurate. The number of shrub species present is significantly greater than typical chaparral, and several of these species are common to this particular area but not to chaparral. The tall shrubs occupy areas of steep slopes, and exposure to sunlight is less intense than the coastal sage scrub. The vegetation is dense and attains heights of up to 10 feet. Occasional openings in this shrub canopy allow for the establishment of shorter perennials and annual plants, increasing the total number of plant species present. The most common species include Heteromeles arbutifolia, Sambucus mexicana, Rhus ovata, Juglans californica and quercus dumosa. Virtually all of the common species found within the other associations on the project site are also represented within this association. A total of 40 species of plants were identified in the tall shrub area. This is most likely the most "natural" plant association occurring within the project area. Its relative inaccessibility to cattle grazing and vigorous regrowth after fire have allowed this type to continue in a reasonably unaltered state. Aalnut/Oak Woodland The walnut/oafs woodland association has become increas- ingly rare in southern California due to increased fire frequency and outright removal due to development. This E association is sell represented on the project site, occupying a significant area in proportion to the other associations. These woodlands predominate in the lower canyons and gentle sloping areas on the western border of the property. The dominant overstory is Quercus agrifolia and Juglans californica, bath native species of trees. Both species are present in sizes of up to 40 inches diameter at breast height. The sizes of individual trees decreases the farther up the canyon slopes they occur due to decreasing availability of water and increasing exposure. The under - story of this association includes elements of all other associations occurring on the site, but here these plants tend to be low -growing and sparse in distribution. The better examples of this woodland have a very open understory of the disturbed grassland type (when the canopy is generally open) or the shade tolerant and moisture preferring species typical of the spring association. A total of 19 species of plants were identified in the walnut/oak woodland association. A survey of live oaks identified 186 individuals larger than eight inches 0BH that would be removed by the project. Approximately 32 percent of the total number of oaks on the site would remain after the project was completed, but the majority of these are smaller -sized and less vigorous individuals occurring at the heads of the canyons. 10 Rock Outcroos Several sandstone rock outcroppings, approximately 9 to 15 feet in length and 3 to 9 feet in width, occur on the northwestern corner of the project site. The sandstone outcroppings support a small but specialized flora which can be considered relatively unique to this area. Most impor- tantly, this is the locality for Dudleya multicaulis, the many -stemmed live -forever, which has been identified by the California Native Plant Society as a sensitive plant. Although it does not at this time receive any legal protection, the plant is becoming increasingly rare throughout its range. Two other species which are restricted to these outcrops within the project area are Mirabilis laevis and Eriogonum elongatum. A total of six species were found an these rock outcroppings. Freshwater Spring A small freshwater spring occurs near the western boundary of the project near Golden Springs Drive. Occurring in a small canyon surrounded by the grazed field type, in the past this spring received intensive use by grazing cattle. Relatively few species of plants found on the site occur only around the spring, principally, a single Plantanus racemosa, Rumex salcifolius, Solanum douglasii, Juncus mexicana, and Carex sp. Other species occurring in adjacent associations, such as Rh3mnus cro.cea ssp. ilicifolia, were observed growing here in the wet soil. A total of 18 species of plants occur in the freshwater spring association. 11 Project Impacts When construction is completed for this project, a part of every plant association will be either partially or entirely removed (Table 3). The only association which will be com- pletely eliminated will be the freshwater spring. The walnut/ oak woodland wil-1 be significantly reduced, and the largest and most vigorous trees will be removed. Except for those plant species unique to the freshwater spring, no species will be entirely eliminated from the project site. The Dudleya multicaulis will be only marginally affected by the construction, since the majority of the rock outcroppings occur outside of the cut and fill line. We estimate that approximately 18 individual plants will be destroyed out of a total population of 60 individuals. 12 MAMMALS, REPTILES, ANO AMPHIBIANS Methods Mammals, reptiles, and amphibians were censused within each plant association on the site and adjacent undeveloped land for four days during the month of May, 1981. Mammals were either observed directly or indirectly by examining scats, tracks, burrows, and nests. Reptiles and amphibians were similarly observed, and specific microhabitats were examined where appropriate. Species of animals not directly observed, but that are expected in this type of habitat, are indicated as such in this report. Project impacts to wildlife were ascertained based upon the percentages of habitat loss determined in the plant survey, and upon the extent of surrounding habitat available to these species once the project is completed. Wildlife Habitat and Species Wildlife species of all taxa require specific attributes within their habitat, such as cover and food resources, in order to survive. An insufficient quantity or quality of any essential resource will either reduce the attractiveness of that habitat to animals, thus reducing the probability that the habitat will be used, or may be so limiting to animals already restricted to that habitat that they may be unsuccess- ful at reproducing, and ultimately surviving. , Although a species may prefer a specific habitat for its cover and/or food, other habitats may serve as important i 13 travel corridors, temporary sources of resources as they r+,ove between preferred habitats, or as a secondary source of resources found in greater abundance elsewhere. Therefore, the loss of these secondary habitats may in fact limit the survival of species even though there is appropriate preferred habitat available. Table 4 includes expected, as well as observed species, together with habitat preferences. Five species of reptiles and amphibians were observed on the site, and an additional nine species were expected. Ten species of mammals were found in the project area, with another nine species expected. What follows is a discussion of the role of each of the five plant associations as wildlife habitat. Disturbed Grassland The grassland association, although highly modified to frequent disturbance and plentiful introduced species, is by virtue of its general structure important as wildlife habitat for those species preferring grasslands. Twenty-two species of wildlife will use this habitat for food or cover. The California Meadow douse relies entirely on this habitat, and the Pacific Kangaroo Rat is also heavily dependent upon it within the project area. Coastal Sage Scrub Coastal sage scrub occupies a relatively small percentage of the study site in comparison to other habitat types Its value as wildlife habitat is therefore limited. Although 14 21 species of animals utilize this habitat in one way or another, only one species, the Desert Wood Rat, is entirely dependent upon this type. Walnut/Oak 'Woodland Twenty-four species of wildlife are found within this habitat. These woodlands provide, although not exclusively, important cover for the larger mammals. In season they also provide large quantities of acorns and walnuts that may be pivotal for species such as ground squirrels and wood rats that store food against times of scarcity. The bases of the older trees sometimes provide homes for species that dig dens, such as foxes. Freshwater S rin Surface water can be a critically important resource for many species of animals. The spring found on the project site exclusively supports the Ringneck Snake, and is used by all but nine species observed or expected in the area. As many as ten species of wildlife may depend upon this source of water. Tall Shrub The tall shrub plant association is an important source of both food and cover for wildlife. Larger shrubs such as Heteromeles arbutifolia, Sambucus mexicana, and Quercus dumosa provide food in the form of large quantities of fruits and seeds. For smaller mammals, such as Brush Rabbits and 15 Dusky Footed Wood Rats, the dense cover with adequate space beneath for running is important for escaping predation and for building nest sites. Twenty-one species of wildlife use this association as habitat and two species, the Brush Rabbit and the Dusky Footed 'food Rat, are almost exclusively dependent upon it for cover. Project Impacts Since a major portion of each of the plant associations except the tall shrubs) will be removed by the project, there will be a correspondingly great loss of wildlife habitat. cng the reptiles and amphibians, the Pacific Treefrog, and if present the Ringneck Snake, California Legless Lizard, and Western Darter Snake will be eliminated because of the removal of the freshwater spring. Among the mammals, the Mule Deer, and if present the Raccoon, Opossum, Striped Skunk, and Dray Fox will be eliminated by the project because of the Toss of the spring and the absence of sufficient acreage to accommodate their normal activities. The almost total loss of disturbed grassland will bring about a severe reduction or outright elimination of the California Meadow Mouse and the Pacific Kangaroo Rat. In summary, those animals most severely affected by the project will be those that are wholly dependent on either the freshwater spring or the disturbed grassland. Those least affected will be the species that use only the tall shrubs. Virtually all other species will have their populations reduced to to some extent, and the degree of impact on a particular species may be approximated by comparing specific habitat requirements in Table 4 with the percentage of plant association (habitat) reduction in Table 3. 17 3IROS Methods 3irds were observed by walking through all habitat types on the study area on five days in May, 1981. Surveys were begun at approximately 6:00 a.m, and continued for three to four hours. In addition, the study site was visited on several afternoons to look for species, such as raptors, which are more active at those times. A special effort was made to locate the more inconspicuous species and it is almost certain that virtually all of the species that are permanent residents on the site were noted. The only exception to this is the Poorwill, (Phalaencotiius nuttallii), which is most certainly a resident on the site but is not active at any of the times the site was visited. A total of 47 species of birds were observed on the study site. These species are listed in taxonomic order in Table 5. The relative abundances of these species in five different habitat types are indicated. These relative abundances, which are based on the field observations, are given as indicators of the importance of each habitat type to each bird species. Additionally, species that are expected to use the site seasonally at times other than late spring are listed in Table 6. Most of these species use the site during migration, and may be quite numerous at those times. Other species listed, such as the Hermit Thrush and the Hutton's Vireo, may occasionally remain on the site for long periods of time but will never be IR numerous on the site. No attemptwas made to list all the vagrant species that could possibly pass over the site at some time. Habitat Use General The relative abundances of each bird species in five different habitat types was determined by observation (Table 5). These habitat types were chosen not only because they differ in floristic composition and structure, but also because they have different effects on the species of birds. For the purpose of the bird survey these five habitat types are:. disturbed grassland, walnut/oak woodland, walnut/oak edge areas, coastal sage shrub, and tall shrub. Except for the walnut/ oak edge areas these avian habitat types are defined by the same plant species described for each plant association in the earlier section of this report. The walnut/oak edge is a habitat which is essentially an edge between,or combination of, two or more of the plant associations. In all cases, the dominant overstory or cover consists of Juglans californica and Quercus agrifolia with the understory containing elements of either disturbed grassland or/and coastal sage scrub. Other important components include the presence of snags, downed woody material, and protective slopes which are often more moist than other nearby habitats. Some of the aspects of bird species use in each of these habitats will be discussed next. 19 Disturbed Grassland This habitat type is a primary feeding site for a number of bird species. Twenty species were observed feeding directly in the vegetation or flying above this habitat in search of prey. The Brown Towhee, House Finch, Song Sparrow, and Rough -winged -Swallow were the most abundant species in the habitat (see Table 5). Probably none of these species or any of the other species observed here were using this area as a nesting site. The towhee, finch, and sparrow are nesting in adjacent habitat types on the study area. The swallows, which need a bank or small drainpipe to nest in, may not be nesting on the site but are dependent upon the feeding opportunities provided by this habitat. Five species of raptors were also seen using the disturbed grassland as a feeding site. One of these was the White-tailed Kite, which was formerly a protected species in California. It is no longer protected since it is becoming increasingly common throughout California. Walnut/Oak Woodland Twenty-eight bird species were observed in this habitat. The dominant species were the Northern Oriole, Rufous -sided Towhee, Brown Towhee, and the Mourning Dove. These species were also quite numerous in other habitat types on the study area, although the Rufous -sided Towhee and the Northern Oriole prefer this habitat. The towhee gleans insects and seeds from the litter provided by the Quercus aa rifolia and the oriole commonly uses this tree for nesting. Nests of this species we, of bird were found in almost one-half of the mature oaks on the site. A number of species are dependent on the various resources provided by these large oaks, both in the woodland and in the canyon edge areas. Mature luercus agrifolia provide abundant resources for foliage gleaners (Wilson's Warbler, Orange -crowned Warbler, Plain Titmouse, Common Bushtit, etc.); a large trunk and snags for woodpeckers and species whose nesting depends on these trees (Common Flicker, Nuttall's Woodpecker, House Wren, etc.); and perches for flycatching species (Western Flycatcher, Western wood Pewee, Ash -throated Flycatcher, etc.). No other tree species on the study site provided this variety of resources for the avian community. Walnut/Oak Edge Of all the habitat types on the study area, this is definitely the area with the highest number of bird species. Thirty-seven bird species were observed in this habitat type. The structural diversity of the plant association provides a wide range of foraging and nesting sites for the avifauna. Many of these areas are in canyons and intergrade with all of the other habitat types to some extent. These areas provide open and closed canopy, tall trees and low vegetation, open and closed understory, and high concentrations of snags. These attributes are in addition to all of the previously mentioned resources of the Quercus agrifolia. This diverse habitat not only increased the number of species that used the area, but 21 also increased the abundance of individuals. Seven species were either common or very common in these areas. These species were the Scrub Jay, Mockingbird, Mourning Dove, House Finch, northern Oriole, Rufous -,sided Towhee, and Brown Towhee, Coastal Sage Scrub Eighteen species of birds were observed in this association. The Mockingbird, Brown Towhee, and the House Finch were the most abundant species. This is the preferred habitat of the Anna's Hummingbird because of the foraging opportunities provided by some of the plant species found here. Four other species use the habitat extensively; the Scrub Jay, Common Bushtit, California Thrasher, and the Song Sparrow. Tall Shrub Twenty-three species were observed in this habitat tvo,--, The two most common species were the California Thrasher and the Rufous -sided Towhee. vine other species were well represented in the habitat, the majority of which depend primarily on this habitat for nesting. Project Impacts General The project impacts will be discussed by habitat. This will allow an- analysis of each habitat and its associated avifauna in relation to the amount of that habitat which ,will be removed by the project (see Table 3). The species o= that are found in only one habitat type or depend heavily on a 22 certain habitat type will, of course, be most severely affected by the loss of that habitat. For this section of the report the Walnut/Oak Woodland and edge areas will be combined. Disturbed Grassland There were four species that were observed only in this habitat type (White-tailed Kite, Lazuli Bunting, Killdeer, and the Meadowlark). Additionally, the Tree Swallows and the Rough -winged Swallow are dependent on the disturbed grassland for feeding. Since approximately 74 percent of this habitat will be eliminated by the proposed project; these six species will be severely impacted by this loss of habitat. The species that were abundant in this habitat but were also numerous in other habitats will be reduced in population size. Walnut/Oak Woodland This plant association is more important for a great number of bird species than any other. Since.ab-out 74 percent of this prime bird habitat will be removed by this project, the species that are most dependent on these areas, and most especially the species that are dependent on the mature uercus acrifolia, will be most severely impacted. The species that were observed only in these areas were the Common Flicker, Nuttall's Woodpecker, Band -tailed Pigeon, 'Western Flycatcher, Western Wood Pewee, Loggerhead Shrike, Brown -headed Cowbird, Western Tanager, and the White -crowned Sparrow. Additionally, the Red-tailed Hawk, Cooper's Hawk, Great -Horned Owl, Mourning Dove, Ash -throated Flycatcher, Northern Oriole, Hooded Oriole, 23 and the Black -headed Grosbeak will be greatly affected by the reduction of this habitat. Coastal Sage Scrub The Roadrunner, Anna's Hummingbird, Mockingbird, Common Bushtit, House Finch, and the Brown Towhee are the species that will be most affected by the loss of this habitat. Since all of these species also use other habitat types (although the Roadrunner was not observed in any other type), and since over half of this habitat will remain intact, the project impact on these species of birds will not be severe. Tall Shrub About 89 percent of this habitat type will remain unaltered by this project. Thus while some species will incur slight reductions in their population sizes on the study site, this will not adversely affect the viability of these species of birds. The Wrentit is the only species that is found only in this plant association. 24 PUELPOQM xeO/;nU OM gna4S LLe1 doao;no ooa Q 6u L.AdS aa;emgsaa Pua L55Eag pagangs La gnaoS a62S L?4sEOO a) x x x x cV aj v a a w W au b a Ta ro M ra m aj W w as u a U U U u U m ra ra ra ra ra b r r w Qi C r r"• 'J 73 '1= ro ra +J •r+ Y' L S.. L L aJ cu O Q 57 >1 ra b ra u U z 41 L. 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Nil all - ,}+_ f , '\ I'/ /+• .., --"a :;- } gym " - ' tit X7 if 75 6; A 33 pueLpOOM Ie0/1nUL2M x gR il}s L LQ I x x x x z dO.Ao;no jooa c 0 6u Lads aaer ysa X x x N N pue Lss2.iq paq.An;s LQ x x gn.ioS aSeS Le;s203 x X x x m ea i u U 7z a r r r Q r W Q a L ro i a i ro aJ ro a1 ro a) ro y O C3 LL. ro w U Cu U ro Q r•• W U eo W V 6 a) Cj O II a.) U b C R3 C U U U Q d O a Q i C N N N N N N N F•- CU Q J C7 O r oa L 3 i Ci7 r 6 C1 O r L GJ i, C..y a.s j Q O r i rII a•a a.l U fa 0 c N 4+ r r Q] r O r O C/7 C7 r J r• U C O N r- ro O al 7 D U r Ln G] aJ a.l U i r Q O 9 r0 w N O O U Q1 4.. W C r L O Q Z Q r r- ci x i y ro s 2s ez r-+ L ul C 6- o ro C ca C N V U N to r w ro G r z O cn 7+ U ul ro c o ti v a nu 7 c V z-- c c— O 3 3 r+ C O 11 r 3 O ro r•• i N R QJ 1 i--- C LL. 34 Table 2 Acreages of Major Plant Associations Occurring Within the Project Boundaries Percent Association Acreage Of Total Coastal Sage Scrub 29.6 13 Disturbed Grassland 90.75 39 Freshwater Spring 2.0 1 Rock Outcrop <1.0 -- Tall Shrub 52.1 22 Walnut/Oak Woodland 58.4 25 TOTAL 232.85 35 Table 3 Acreages of Major Plant Associations Removed and Remaining After Project Construction is Completed REMOVED REMAINING Percent of Percent of Association Association Acreage Total Acreage Total Coastal Sage Scrub 8.5 29 21.1 71 Disturbed Grassland 67.1 74 23.65 26 Freshwater Spring 2.0 100 0.0 0 Rock Outcrop Tall Shrub 5.6 11 46.5 89 14alnut/Oak Woodland 43.3 74 15.1 26 TOTAL 126.5 106.35 36 QJ 7 I 4v C 47 N G x O W CJ x x x x x x x x x x x x x x x x x x x x x x x }c x x x x x x W L J Q O LW W 4J W 4J Q Q w Q L=W N N r O N L •T V N a•- C •r N C MC cJ n rti -r•• ,.- L C C 7 ro C •r +i ro (31 d 4.J N 6 C O 4-)r- _L _ 4-; C Cu U rO L C V rq RI OJ V C N b q L V O C v N L a) N r L N C N T ro N..I re G C ++ 7 N N J.J N N L L C, OCL O MI O 0.1 O rG i } d N C •r q c •r o ro _c Oj C ^ CD Li s1 C Q3 C r 4-3 b L 7 QJ ro ro i N rC L L J J O ro mz i L N x N N ro O N 3 d J J r rz r- x N L J Q cl 'm a) CJ N 4- 4J ] Qa V ro w FO- FL• 3 Q Cr 1 ti ro N C r- C L ^ L GJ C QJ a) L C L GJ 4- QJ I a..r QJ C G cJ O +- J C. 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C/l O — N O Q N a.J 1 O C N Q] L ro O iJ p cu U7 II N O r— Z ro o a r ro o u r U f6 C r rQ O S) X r O cu O J J }J AnU< U O N Q O ro O N L O rC N — U V C U SJ U N 6 G/'S ro r0 r cu S. M N O O L r+ a {-J N r0 O N C izUN V i Q1 v Q1 ro L C r C 3 r Q] L r C +•+ 4J QJ L ro C N a 3 a Z O L L. V p i V C] c? C7 C C N C T; p Q) m .O O rC r Q 1 4] 3 L 'a U C7 Q7 q r co C U— L I L n i cil W Gu C CU N rC N N X •k Y y o Q V p L 4c 3 J J C C/ I is l I 501 North Indian Hill Blvd. Claremont, CA 91711 June 10, 1981 Esco L. "Bill" Richardson & Associates 1505 East 17th Street, #217 Santa Ana, CA 92701 Dear Mr. Richardson: This letter reports on the number, percentage, and condition of coast live oaks ( uercus a rifolia) that would be removed from a site by its development into indust sites. This letter is concerned only with uercus agrifolia trees, which hereafter will be referred to simply as oaks". The site of proposed development is located in the western portion of the community of Diamond Bar, in eastern Los Angeles County. Field surveys were based upon Study "A", Tentative Tract Map No. 39679, prepared by Esco L. "Sill" Richardson and Associates in January, 1981. Field surveys were made on two days in May of 1981. At that time all oaks having trunks larger than approximately eight inches diameter at breast height (three feet above the ground) and which fell within the area to be cut or filled were surveyed and counted. A determination of the percentage of oaks remaining after the project was also estimated during the ground survey and also from aerial photographs. The survey determined that 186 oaks would be removed from the site by the proposed development. This represents approximately 68 percent of the total number of oaks on the site. The trees that would be removed are larger in size, and more vigorous, and offer better wildlife habitat than those that would remain. Sincerely, r _ Ronald D. Quinn, Ph.D. Professor of Biological Sciences ARCHAEOLOGICAL SURVEY OF TENTATIVE TRACT NO, 3g679 DIAMOND BAR, LOS ANGELES COUNTY, CA, May 1281 by BRUCE JENKINS Supervisor Constance Cameron, Consultant ARCHAEOLOGICAL RESEARCH FACILITY/MUSEUM OF ANTHROPOLOGY California State University, Fullerton Archaeological Research Facility Museum of Anthropology California State University Fullerton, California 92634 714 ) 773-3977, 773-3976 ARCHAEOLOGICAL SURVEY OF TENTATIVE TRACT NO. 39679 DIAMOND BAR, LOS ANGELES COUNTY, CA. SUMMARY An archaeological survey of Tentative Tract No. 39679, Diamond Bar, Los Angeles County, was performed by the Archaeological Research Facility, California State University, Fullerton, for Mr. Esco L. "Bill Richardson. No adverse impact on cultural resources is anticipated from the proposed project. A qualified archae- ologist should be contacted•, however, in the event that artifactual material is ex- posed during grading operations. INTRODUCTION: An archaeological survey of Tentative Tract No. 39679, Diamond Bar, Los Angeles County, California was performed on May 12, 1961 by Bruce Jenkins, Gale Carpenter, David Elder, Mike Miniaci, all members of the Archaeological Research Facility, Department of Anthropology, California State University, Fullerton. The survey was performed at the request of Mr. Esco L. "Bill" Richardson, Licensed Land Surveyor. DESCRIPTION AND LOCATION OF THE PROPERTY: The subject property consists of 250 acres located south of Golden Springs Drive and East of the Pomona (60)/Orange C571 Freeway Interchange fn Diamond Bar, California. The U.S.G.S. topographic map reference is Township 2S, Range 9W, NW; Section 16 on the San Dimas and Yorba Linda Quadrangel maps, 7.5 minute series see attached map). The land parcel is approximately 6400 feet by 3200 feet and ranges in elevation from 620 feet to 1040 feet. There is a buried gas line at the southwest end of the property. The south is defined by a ridge top which contains a recent housing tract. The soil is a sandy loam with outcrops of broken sandstone in some areas. The vegetation at lower elevations is dominated by annual weeds, mustard, and thistle. Higher up, on the slopes, is typical Southern California chapparel with oak trees, scrub oak, sage, buckwheat, elderberry, Jimson weed, and poison oak. The fauna of the area is represented by deer, cottontai'1 rabbits, rodents, snakes and lizards, redtail hawks, crows, and a variety of song birds. Tentative Tract No. 39679 Diamond Bar, CA. page -2- There are a number of dirt located at the lower elevations; roads have been used by off -road ARCHAEOLOGICAL BACKGROUND: roads on the property. Most of these roads are although some do lead up the ridges. Many of the vehicles, particularly motorcycles. Southern California is generally defined as the coast and the im tertar, south of the Tehachapi Mountains. Within this area there a -re two archaeological regions, the Coast and the Desert (Metghan 1959)_. Each contains an artifact i-nventory re- presenting adaptations to local envi-rornnental conditions. Vi•l l i'am J . Wallace C19551 suggested four horizons or time periods for Southern Cali,forni'a: Horizon I, Early Man; Horizon II, Milling Stone; Horizon III, Intermediate Culture; Horizon ICI, Late Prehistoric. Warren's Encinitas Tradition corresponds roughly to Wallace's Horizon II and the tool assemblage is typified by an abundance of mi,llirgstones [manor and metatesl and crude chopping, scraping and cutting tools. Doughnut stones, di'scoi,dals, and cogstones are occasionally found. Projectile points are large and crudely manu- factured. Warren's Shoshonean tradition began perhaps 15ad years ago Ccorrespondimg to Wallace's Horizon Ivi and continued until the time of European contact. This tradition grew from the influx of Shoshonean speakilg people coming from the Great Basin and spreading through Southern California all the way to the coast. It i-s characterized by the addition of new tools to the previous traditions. These new tools include small, finely made projectile points, more shell and bone artifacts, and the appearance of ceramics i,n some locations, HISTORICAL BACKGROUND: Gaspar de Portola led the first European land expedition through coastal California, traveling from San Diego to Monterey in 1769. Several Spaniards traveling with Portola, notably Pedro Pages, Miguel Costanso, and Fathers Crespi and Gomez, kept journals and recorded descriptions of the.land and the native peoples. It is from these journals that we know the approximate route taken. After ten days of travel from San Diego, they camped beside the river now known as the Santa Ana River. They then continued north through Brea Canyon into Los Angeles County, passing southwest of the subject property. This property was once a part of the Rancho Santa Ana del Chino, purchased from Don Antonio Maria Lugo by Isaac Williams in 1841 (Mills 1975y_. ARCHAEOLOGICAL RECORDS SEARCH: An archaeological records search for the subject property was requested from the U.C.L.A. Archaeological Survey which houses the records for Los Angeles County. This search was carried out by Barbara Beroza of U.C.L.A. and her findings show no previously recorded archaeological sites on the subject property. The closest sites, three in number, are approximately one-third of a mile to the northeast. Tentative Tract No. 39679 Diamond Bar, CA. page -3- The three sites are LAn-852, 353, and 854, all recorded by D. Whitley on 9/21/76. They are each described as being small lithic scatters of cores and flakes, no site depth was noted. An isolated find was located near Diamond Bar Creek just north of the subject property. The next closest recorded site is over one -and -one-half miles to the north. A check of the historic topographic maps for this area, by U.C.L.A., did not show a record of historic structures within the boundaries of Section 16. A check of the National Register and the California Inventory of Historic Resources was also negative. SURVEY METHODOLOGY / RESULTS: The survey was conducted on May 12, 1981 by Bruce Jenkins, field supervisor and field crew Gale Capenter, Dave Elder, and Mike Miniace (volunteer). Constance Cameron served as the archaeological consultant. The area was surveyed in 15 to 20 meter transects along the ridges and drainages, wherever possible. Steep slopes and dense brush cover made complete coverage of the property impossible. Areas of higher sensitivity for cultural resources 0 e. relatively level areas, lower knolls, and along major drainages) were more intensively searched. Rodent holes, erosion cuts, dirt roads, and other clearly exposed areas were carefully examined. The ground actually observed was approximately 601/10' of the property while the remaining 40% was cursorily observed from a --distance due to dense brush and steep slopes. No evidence of prehistoric use was observed during this survey. A rock wall, asphalt pavement, and a concrete slab were observed it one drainage area but no mention has been found in the records of any historic structure in this area. CONCLUSIONS/RECOMMENDATIONS: Development of this property will have no adverse effect on cultural resources. The historic pavement was probably associated with recent ranching operations. No artifactual material was observed on the surface of the property; however, there were level areas covered with vegetation where the ground could not be seen and it is always possible that there are artifacts buried beneath the surface. If arti- factual material should be exposed during grading operations, a qualified archae- ologist should be contacted immediately in order to remove the materials in a proper scientific manner. REFERENCES Meighan, Clement W. 1959 The Little Harbor Site, Catalina Island: An Example of Ecological Interpretation in Archaeology, American Antiquity, Vol 24 Mills, Marie Taylor 1975 Historic Sites Wi•thi•n the Mount San .Antonto College District Depicting Landmarks of The Ventage Fears, Mount San Antonio College Foundation, Walnut, CA, Wallace, William 1955 A Suggested Chronology for SoutFiern California Coastal Archaeology in Heizer and Whipple Leditorsl The California Indians: A Source Book. University of California Press er a ey. Warren, Claude 1968 Archaic Prehistory In the United States. Eastern New Mexico University Contributions In Anthropology. Vol. 1 No. 3. ew VNT Va el AA r , fr i •: pry' -q,,r I : f•^ d7 - y+l G 'V ` '-- 1 / r ,^`'•• 1r a '1M1'1J q i It Cl 4 lit NL41 fip0Y' i _ " / - ..wear / . \` 1ti i p^\ 5,, '\."'•. f7. ; a-y'1:'. _ '\ ' , `, r' .,' d r!' ,//%•' .rn,• '•-~`, yip _ -FC•i /,L a • • g - - yc. it . _ s ,.. r / J / f1.\ 1' 4 `' -- _ ° ! I}/y! ..: 181t.f '" 1 _ -. ''•`.`-r•• ' Q• `.mil rl ,_ I1 1: i •/'! :, r:,--'•iL V \''Sa4 Ji, + r tam ._-. '1i ; rQl .'j2• y'," y • "°°', 04` Vic=.. 7,''4' le 'sai` r'' e1il-J 7+ •'1. .; it f~\,s,_' •.'r: :'. 1 U.S-/± t. ,`• ti•'•'. ;1.. : 1•:..tl-` v/eTr,^-^'` R'J r r S r - -mom _ r ' / ` }. v-•- +.' i '''UI -, ,,• - 1. i$+` r _ - - ..., ,s.'. '` r/ 1 J. r/ ? N !:I `•J'..•• l'r ',t', ti...a/ir.' I `tee. •::•- a ='-:• : ;, " . / ' -. , r+,• J'1-- ',1•"\ 1,, J •.,( }: .,: L;,', ; . .•-/ 000. S.. , f wI •:::%'aJ ", N f L r•--- `. /' I i1~yJ • .... "per..,^;"' i r .1".,•r-'•l " r¢ " +.•J , . .fir i " % - . . /'Cl AREA CONTAINING T.T. 29679. s j;"_.r; _ }• .:.-_—;1 7 r }ir Diamond Bar, Los Angeles County t U.S .G.S . Topographic Maps ` moo -, ..._.. J,',•., -- .. Ia '" o` „` ' - af, San Dimas and Yarba Li ada Ir• I / - _-_' • !.- :`,,.I, t \;i n, ' I, jl•\,/... vij{i),F.'htJ{Ill f( 1.'//<j/%//°'~` ft-v>r p ^ f r `^' 7. 1 I '1``lth r1 i 'V r— ,,b'. rr 7 C-, V `] i • r\ " `lid I ly,.r: t _.c i `J/• /. O - .r s II,, /rr9y. I. r,r : 4. :7 y1 `(c ""15 '.• C,. ( «C X7 l` t .,% ='- ' ` 4•., h ;'. T r1f` T' - - . r\'i o ,u, y: 1 •,• I F - f• 1. f 1 W, T T , L 0 4 1v 1 V11 e A P'. e jPo" or Diamond Bar Industrial -Office Traffic Study 0 AL W ell - g g o e a Transcorravan P=$anMf1q Traffic Engineering jr.r n. VI, MA 17 Table of Contents Section paQ o 1. Findings ................................................ 2 Existing Traffic Conditions Existing Plus Project Traffic Conditions Mitigation Measures 2. Project Description ..................................... 4 Project Location Proposed Development 3. Existing Traffic Conditions ............................. 5 Surrounding Street System Traffic Volumes Intersection Capacity Utilization 4. Project Traffic ......................................... 7 Traffic Generation Traffic Distribution and Assignment 5. Existing Plus Project Traffic Conditions ................ 9 Traffic Volumes Intersection Capacity Utilization Signal Warrants 6. Other Traffic Considerations ........................... 12 Access Guidelines Internal Circulation Design Guidelines Access Points Left Turn Pockets Bicycle Trails Average Trip Length Vehicle Miles of Travel Appendices A. Glossary of Transportation Terms B. Explanation and Calculation of Intersection Capacity Utilization List of Figures Following Figure No. Title Page No. 1 Existing Traffic Conditions ............... 6 2 Project Traffic Distribution and Assignment -Inbound ....................... $ 3 Project Traffic Distribution and Assignment -outbound ....................... B 4 Existing Plus Project Traffic Conditions 11 List of Tables Table No. Title Pace No. 1 Trip Generation ................................ S 2 Existing Plus Project Intersection Capacity Utilization ........................... 10 3 Signal Warrant Volumes ......................... 11 4 One -Way Trip Length by Land Use ................ 15 5 Vehicle Miles of Travel ........................ 16 Diamond Bar Industrial -Office Traffic Study This report contains the traffic analysis of the Diamond Bar Industrial -office development. The project site is located on the easterly side of -the 57 Freeway southeasterly of Golden Springs Drive in the Diamond Bar area. The traffic report contains documentation of existing traffic con- ditions, traffic generated by the project and distribution of the project traffic to surrounding -roads. Each of these topics is contained in a separate section of the report. The first section is "Findings", and subsequent sections expand upon the findings. In this way, information on any particular aspect of the study can be easily located. Although this is a technical report, every effort has been made to write the report clearly and concisely. To assist the reader with those terms unique to transportation engineering, a glossary of terms is provided in Appendix A. 1. Findings This section summarizes the existing traffic conditions, existing plus project traffic conditions, and the proposed mitigation measures. Existing Traffic Conditions a. The project site is vacant and therefore generates no traffic. b. Golden Springs Drive is a four lane improved roadway. C. All roadways southerly of the 60 Freeway in proximity to the project site are operating within their capacities. d. All intersections studied are operating at Level of Service B" c; better. Existing Plus Project Traffic Conditions a. The project will generate 13,740 vehicle trips per day. b. At project completion all roadways southerly of the 60 F''Y way in proximity to the project- site will operate with.i . capacities. C. All intersections studied will continue to operate at L2 of Service "B" or better. d. At approximately 60 percent of project buildout, traffic signals will be warranted at both project access points. e. upon completion of the project,the daily vehicle miles of travel will be 113,862 miles. Mitigation Measures a. At 60 percent of project buildout, traffic signals should be installed at both project access points. b. Left turn pockets for westbound traffic on Golden Springs Drive should be installed at the project access points. 2 C. Left turn pockets should be a minimum of 250 feet long. d. The access and internal circulation guidelines as presented in Section 5 of this report should be followed especially with regard to access on curves and adjacent or opposite inter- section access points. 3 2. Project Description Project Location The project is located along the southerly side of Golden Springs Drive westerly of Grand Avenue and easterly of the 57 Freeway in the Diamond Bar area. Proposed Development The 233 acre parcel consists of hilly terrain of which 74 acres are considered buildable. Based upon the buildable acreage, 37 acres are to be for light industrial uses, 35 acres for office uses and 2 acres for restaurant uses. The traffic characteristics of the uses proposed include the following: Light Industrial. Light industrial, land use will characte--- istically have fewer employees per acre than most other business or commercial uses-, and fearer non -employee visits. There are pronounced traffic peaks as employees arrive in the morning and depart in the evening. Offices. Typically, professional offices used by insurance agencies, real estate agencies, doctors, lawyers, C.P.A.'s consulting firms, and others have pronounced peak traffic during the morning and evening peak hour periods as employees arrive and leave. Restaurants. Typically, restaurants experience heaviest trafT7urinq the noon hour and in the evening after 5: 00 PM. Morning traffic is usually insignificant, and evening street peak traffic is low. 4 3. Existing Traffic Conditions This section discusses the surrounding street system, existing traffic volumes, and existing intersection capacity utilization. Figure 1 depicts the existing traffic conditions. Surrounding Street System The roadways in the vicinity of the project include: Golden Springs Drive (Colima Road), Grand Avenue, Diamond Bar Boulevard, Pathfinder Road, Brea Canyon Road, the Orange Freeway (57 Freeway) and the Pomona Freeway (60 Freeway). Golden Springs Drive (Colima Road). This is a four lane secondary roadway with a pasted spee limit of 50 miles per hour. The project site will take access to Golden Springs. As Golden Springs passes under the 57 Freeway in the vicinity of project site a raised median exists. This roadway is comprised of several curves and grades. Westerly of Brea Canyon Road, Golden Springs becomes Colima Road. Colima is Classified as a major roadway and provides eastbound access to and from the 60 Freeway via a signalized intersection. Grand Avenue. This is a four lane divided major roadway with a raised planted median. There is a full interchange with the combined 57 and 60 Freeways. There are signals on Grand at the eastbound freeway ramp, Golden Springs, and Diamond Bar. Diamond Bar Boulevard. This is a four lane divided major roadway having signalized intersections with Grand and Pathfinder. Pathfinder Road. This is a two lane major roadway with a full interchange at the 57 Freeway. The northbound and southbound 57 Freeway ramps at Pathfinder are signalized. Brea Canyon Road. This is a two lane major roadway flaring to four lanes at its intersections with Pathfinder, Golden Springs Colima) and the 60 Freeway westbound ramps. The former intersection is controlled by a "STOP" sign on Brea Canyon while the latter two intersections are signalized. Traffic volumes The existing daily traffic volumes are based upon the Los Angeles County and CalTrans traffic volume publications. These daily two- way volumes are illustrated in Figure 1. Using roadway capacities of 14,000 vehicles per day on two lane roads and 28.,000 vehicles, per day on four lane roads, all roadways in the vicinity of the proj- ect site and southerly of the 60 Freeway are operating within their capacities. Intersection Capacity'Utilization (ICU) ICU is essentially a measure of the portion of an intersection's total capacity being utilized by the traffic volumes. An explana- tion of ICU and Levels of Service along with the calculations of the intersections studied can be found in Appendix B. Using the existing evening peak hour traffic volumes and current intersection geometrics, the existing Intersection Capacity Utilization (ICU) was calculated for the intersections in the vicinity of the project site. As illustrated in Figure 1, the intersections studied are oper- ating at Level of Service "B" or better. Legend a 0 97 4 Figure I Existing Traffic Conditions Orange Fraeyray Number of Through travel Lanes Signal Average Two-way Daily Traffic Volume(in Thousands) PM Intersection Capacity Utilization Level of Service v ssociates 4, Project Traffic To estimate project -related traffic volumes at various points on the street network, a three step process is utilized.. First, the traffic which will be generated by the proposed development is determined. Secondly, the traffic volumes are geographically dis- tributed to major attractions of trips, such as residential areas, commercial developments, and recreational centers. Finally, the trips are assigned to specific roadways and project -related traffic volumes are determined on a route -by -route basis. Traffic Generation The traffic generated by the project is determined by multiplying an appropriate trip generation rate by the quantity of land use. Trip generation rates are expressed in terms of trip ends per per- son, trip ends per employee, trip ends per acre, trip ends per dwelling, or trip ends per thousand square feet of floor space. I_` a particular land use generates six outbound trips per acre in the morning peak hour, then six vehicles are expected to leave the site in the morning peak hour for each acre of development. Significant research efforts have been made by CalTrans, the Insti- tute of Transportation Engineers, Kunzman Associates, and others to establish the correlation between trips and land use. From this body of information, trip generation rates can be estimated with reasonable accuracy for various land uses. Trip generation rates are. predicated on the assumption that energy costs, the availability of roadway capacity, the availability of vehicles to drive, and our life styles remain similar to what we know today. A major change in these variables may affect trip generation rates. The trip generation rates found in Table 1 were derived from the Institute of Transportation Engineers' publication Trap Generation. Traffic Distribution and Assignment Traffic distribution is the determination of the directional orientation of traffic. It is based on the geographical loca- tion of residential, commercial, business, and recreational opportunities. Traffic assignment is the determination of which specific route development traffic will use, once the generalized traffic distribution is determined. The basic factors affecting route selection are minimum time path and minimum distance path. Figures 2 and 3 illustrate the project traffic distribution and assignment for inbound and outbound traffic. 7 TAB LE 1 TRIP GENERATION Descriptor Acres/ Morning Evening Daily Sq. Ft. Peak Hour Peak Hour Total In Out In Out Trip Rates: General Light Industrial Acre 8.6 1.5 3.2 6.3 55 General Office Acre 23.0 3.1 3.8 21.0 240 Restaurants TSF* 8.5 3.5 9.9 4.0 165 Trips Generated: Light Industrial 37 Ac. 320 60 120 230 2,040 Professional Office 35 Ac. 810 110 130 740 8,400 Restaurants 2 Ac. 20,000 sq. ft.) 170 70 200 80 3,300 Total 74 Ac_ 1,300 240 1 450 1,050 13,740 TSF=Thousand Square Feet. Figure 2 . Project Traffic Distribution And Assignment Inbound F ca 3 o SI Qt iVC 2 15 5 Go \ 60 r 50 3 100 c aC Site 3 m 20 Qua 10 Rq 7 30 Ora Freeway C n l a c SSCCiQt2S Figure 3 Project Traffic Distribution And Assignment Outbound F O s 30 5 Q<<re 35 2 t` a c 60 48 5 445'' G. 35 i Site 3 l i 6° J 1Q 20 Q Aathf^ der S7 30 Orange Freeway V LU11AlCLil ,4ssccia eg