HomeMy WebLinkAbout10/08/2019 Special Joint Mtg with CC �
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DIAMOND BAR
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CITY OF DIAMOND BAR
SPECIAL MEETING OF THE CITY COUNCIL
AND PLANNING COMMISSION
WINDMILL COMMUNITY ROOM
21810 COPLEY DRIVE
October 8 , 2019
6 : 00 p . m .
CALL TO ORDER : 6 : 00 p . m .
PLEDGE OF ALLEGIANCE :
1 . ROLL CALL : Council Members : Andrew Chou , Ruth M . Low , Nancy A . Lyons ,
Mayor Pro Tem Steve Tye , Mayor Carol Herrera .
Commissioners : Jennifer " Fred " Mahlke , Kenneth Mok , William
Rawlings , Vice Chairperson Frank Farago , Chairperson Naila
Barlas
2 . REVISED DRAFT GOAL AND POLICY LANGUAGE FOR THE GENERAL PLAN 2040
PUBLIC REVIEW DRAFT CHAPTERS 2 THROUGH 4
Recommended Action : Receive the staff presentation , receive public comments , and
provide any additional comments or direction on the proposed revised Goals and
Policies in Chapters 2 through 4 for inclusion in the Public Hearing Draft General Plan .
Requested By : Community Development Department
3 . REVIEW OF THE GENERAL PLAN 2040 PUBLIC REVIEW DRAFT CHAPTERS 5
THROUGH 8 , DRAFT CLIMATE ACTION PLAN AND DRAFT EIR
Recommended Action : Receive the staff presentation ; receive public comments ; and
provide feedback to facilitate the preparation of the Public Hearing Draft General Plan .
Requested By : Community Development Department
4 . ADJOURNMENT
, ' �, \
�- 1 % � I(�
=� i������ JOINT MEETING of the
CITY COUNCIL and
DIAMOND BAR PLANNING COMMISSION
�� � ��� � ��� r� �� .,�� r�� �� r� �,� r,,,; i AGENDA REPORT
AGENDA ITEM NUMBER : 2
MEETING DATE : October 8 , 2019
TITLE : GENERAL PLAN UPDATE — REVISED DRAFT GOAL AND
POLICY LANGUAGE FOR THE GENERAL PLAN 2040
PUBLIC REVIEW DRAFT CHAPTERS 2 THROUGH 4
RECOMMENDED ACTION :
Receive the staff presentation , receive public comments , and provide any additional
comments or direction on the proposed revised Goals and Policies in Chapters 2 through
4 for inclusion in the Public Hearing Draft General Plan .
DISCUSSION :
At the September 25 , 2019 joint meeting , concerns were expressed that several draft
policies were regulatory in tone and written as directives rather than statements intended
to guide the policy implementation of the General Plan .
In response , staff has provided redline/strikeout revisions to several of the draft Goals
and Policies for Chapters 2 through 4 to more clearly express them as statements of
intent , and avoiding words and phrases more commonly associated with code regulations
( see Attachment 1 ) .
The proposed text revisions to not alter the intent of the draft Goals and Policies . The
General Plan is the City ' s governing policy document and all actions taken or authorized
by the City must be consistent with the General Plan .
Prepared by :
��
for Daniel Fox Greg Gubman , AICP
City Manager Community Development Director
Attachment :
1 . Revised Goals and Policies for General Plan 2040 Public Review Draft Chapters 2-4
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ATTACHMENT 1
R�vi � � d Goai � and Polieie � f� r
General Plan 2040 Public Review Draft
Chapters 2 throuqh 4
LAND USE & ECONOMIC DEVELOPMENT
Revised Goals and Policies
October 8 , 2019
General
POLICIES
LU - P - 1 Ensure that ��—the scale and massing of new
development $e-- provides sensitive transitions or design
techniques in building height , bulk , and landscaping to
minimize impacts on adjacent� less intensive uses , particularly �
residential uses .
LU - P - 3 As opportunities arise , c �ollaborate with regional agencies �
and neighboring jurisdictions on land use and transportation
planning in line with regional planning efforts such as the
Regional Transportation Plan /Sustainable Communities
Strategy .
LU - P - 6 When a �propriate , r�equire new development to pay its fair �
share of the public facilities and off-site improvements needed
to serve the proposed use .
LU - P - 7 As larger vacant or underutilized sites within the built
environment are developed or redeveloped , maximize
multimodal accessibility with appropriately �
designed street networks , and walkable block sizes scaled to
proposed uses .
Residential
POLICIES
LU - P - 8 Ensure�-e�-i�� that new residential development be I
compatible with the prevailing character of the surrounding
neighborhood in terms of building scale , density , massing , and
design . Where the General Plan designates higher densities ,
rovide�e adequate transitions to existing development .
LU - P - 9 Incorporate� architectural and landscape design
features in new development that create more pedestrian -
friendly neighborhoods , such as orientation to the street ; set -
back , or detached garages ; tree- lined streets ; and
landscaped parkways between streets and sidewalks .
Diamond Bar General Plan 2040 � LAND USE & ECONOMIC DEVELOPMENT 1
LAND USE & ECONOMIC DEVELOPMENT
Commercial , Office , and Industrial
POLICIES
ILU - P - 12 ��+r� Ensure that commercial uses and shopping centers
are designed in a manner compatible with adjacent
residential areas in terms of traffic and noise impacts , building
scale , and appropriate transitions and buffers .
Mixed Use
� o � � s
Neighborhood Mixed Use
� LU - G - 16 Create a well-designed , �I�epedestrian - friendly , mixed -
use neighborhood that encourages community interaction
and healthy lifestyles while reducing reliance on automobiles .
POLICIES
General
� LU - P - 16 In residential mixed - use areas , �encouraae the
clustering of non -residential uses at key visible locations .
� LU - P - 17 Promote� � � � � � r� + hry + site designs that create active street
frontages and introduce pedestrian -scaled street networks
and street designs .
� LU - P - 18 ��eq�+�� Development �eshould be sensitive to the building
form , density , massing , and scale of surrounding residential
neighborhoods .
LU - P - 19 To meet the recreational needs of new residents , ��e
ensure that new residential and mixed - use developments
larger than four acres #�incorporate public parkland in the
neighborhoods where such developments are located .
Residential and mixed - use developments under four acres
ma �°� � � �� ��—^��k���v �le�� ��� provide dedicated
parkland , in lieu fees f��s �tes � ��e�-�e � �o;QEr��, or a
combination , in accordance with Diamond Bar' s park
acreage standards , t�-�e�t#� YD /" Y� lY �' I /lY� /'YI noo � � „ f no, � ,
ro � �,��rac;;� .
Diamond Bar General Plan 2040 � LAND USE & ECONOMIC DEVELOPMENT 2
LAND USE & ECONOMIC DEVELOPMENT
LU - P - 20 Encouraae ��i� the consolidation and location of parking �
to the rear or side of buildings .
Neighborhood Mixed Use
LU - P - 22 Encouraae �-e commercial development to incorporate � �
outdoor green spaces appropriate and usable for patrons and
visitors .
LU - P - 23 Residential and mixed - use developments on F-e�sites larger
than two acres ��� should include ,—� � � � ro + � o � „ n � + r� „� + � „ n
e�a range of housing types that meet the needs of a diversity
of income levels and household sizes .
LU - P - 24 � �� � r� +�;� guildings located along corridors should be �
designed to face the street and define the public realm with a
mix of building patterns , ground floor transparency for
commercial uses , and pedestrian - oriented elements such as
building entrances and public outdoor spaces .
LU - P - 25 Promote neighborhood interaction by providinqrory � � � Y� nry + ho I
landscaped walkways , bikeways , and public
spaces such as parks and commercial plazas , etc .
I? �� rvi iiro 4ho � /-� nc ^ �-.� } � nr� rrr� i-I I /� � rv � inr� �/ Iy� } � } � o ror-� r
fRi�V�ffTG V�JT�''�7 1�YF'.TTQTTT7 G^v QIT�Tre�fCl"f 7'� Tirfl-f 1TQT
. ( Deleted because it is a repeat of LU - P -20 )
Transit - Oriented Mixed Use
LU - P - 27 To �r� promote a healthy jobs / housing balance—i�-�#e
�e+gk�e�#e�e�, each newr� ir-e f�t ��e m � ��
developments should include a minimum nonresidential FAR of
. 25; e���er�ore#�e-�,� r - r��q � ,� r,�ee # ago + h ,� + ; � on � � � �
�1�- Ly{�e�t � r + h���� n ,-� r�_ roci �-Jov� �irtil i iil �� p ir� � ion��
J ��-rr ��rri�rvi crmcr� y�rr�-
�� F71+p ��� � �� �c—vi n��v� c��-�ttr0�L r� o rrv�i--pri�r�r
I Ir� l-lr + o ry r� � i rr ori � � i irr-v o � iolr� r� mor� + � f li � i � _
vperca-r�cr �pTrE-p , cr���.�-rccrv� � ��rcrc�la�-r�rc-
i�Y`�t-1��
LU - P - 28 Encouraqe the development of live -work spaces .
LU - P - 29 Allow high - density housing at a minimum density of 20 units per
acre and up to a maximum of 30 units per acre , with �# a I
r � ml-� inorl non - residential FAR of u to 1 . 5 to promote a
compact development pattern that reflects the area ' s
proximity to transit . Allow supporting commercial uses along
Brea Canyon Road .
Diamond Bar General Plan 2040 � LAND USE & ECONOMIC DEVELOPMENT 3
LAND USE & ECONOMIC DEVELOPMENT - ' '' ' '
� LU - P - 30 �-e�+�e- Ensure that building frontages and streetscaping #�
define the public realm and encourage pedestrian activity
and comfort with a mix of building patterns , ground floor
transparency for commercial uses , and pedestrian - oriented
elements such as building entrances and public outdoor
- spaces .
� LU - P - 31 Promote�i�e convenient , attractive , and safe pedestrian ,
bicycle , and transit connections between the Transit- Oriented
Mixed Use neighborhood and surrounding neighborhoods and
other destinations within Diamond Bar such as schools , the
Town Center, and parks .
� LU - P - 32 In conjunction with new development , �implement an overall
parking strategy for the Transit- Oriented Mixed Use
neighborhood , including consolidation of smaller parking lots
and district-wide management of parking resources .
LU - P - 33 Consider amendments to the � rn�� Development Code
parking regulations �,n-T� ',�� „ rmon + � ^ ,-�, o ^�;�
" . . � : � ' � � '' - �' as needed to allow� lower parking
minimums for developments with a mix of uses with different
peak parking needs , as well as developments that implement
enforceable residential parking demand reduction measures ,
such as parking permit and car share programs .
I LU - P - 34 Ensure�ir-� that development � � � ^ rr ^ rr + o � evaluates and
mitigates to extent practical noise and air quality issues related
to the proximity of the SR - 60 and Metrolink .
Town Center Mixed Use
� LU - P - 35 ���e Ensure that any reuse , redevelopment , or
refurbishment of the Town Center area maintains a
dominance of retail , dining , and entertainment uses . Allow
residential uses within the designation ' s permitted maximum
range , as well as offices , either on upper floors or otherwise in
locations that do not detract from the area ' s predominant role
as a community shopping , dining , and entertainment
destination .
LU - P - 36 Prioritize and support renovation , infill , and reuse of the existing
� commercial center. Require , where a �propriate , redesign and
modernization of architectural treatment and the introduction
of finer-grained pedestrian network , as well as utilization of
parking lots to create central gathering spaces and make the
Town Center more pedestrian - friendly .
Diamond Bar General Plan 2040 � LAND USE & ECONOMIC DEVELOPMENT 4
LAND USE & ECONOMIC DEVELOPMENT '
LU - P - 37 �� Utilize buildings and streetscapes to define the public
realm and encourage pedestrian activity and comfort_,�;
�.� mv� lo h � i ir� � .� rr� � inr /YFIY(V /'"FI � / � Ir-vri � c � rvr� ir� ry o��7
- �,n,i i-lri � io + hrr� i irvh i icoc � � � ho or-lrv�T�
� i ���l? on��� +�r` ^vrY'�'rrrmi-r� r I l^lo � iol � r� mor� � ci � oc i�}�vrpoYa�
= � i i � l-J � � r rvroor� cr� n � oc
To further promote these objectives, incorporate
attractive landscapina elements and usable outdoor
areen spaces, and discouraqe new drive throuqh uses .
LU - P - 38 Promote �-�ir-�ki �site designs that create an active street
frontage and screen off-street parking from the Diamond Bar
Boulevard and Golden Springs Drive frontages .
LU - P - 39 �e�-i�sStreetscape and intersection improvements along the �
major corridors of South Diamond Bar Boulevard and Golden
Springs Drive #eshould enhance connectivity , comfort , and �
safety for all modes of travel , and increase accessibility to and
from surrounding areas .
LU - P - 40 Study, as necessarv , the implementation of safe pedestrian �
connectivity between the north and south sections of the Town
Center Mixed - Use project site and at Lorbeer Middle School .
Potential strategies for achieving safe pedestrian
connectivity may include traffic calming measures along
the roadways, crosswalk visibility improvements, ensuring
adeqvate time for walk signals, refuge islands, bulb- outs,
bridges, and others .
LU - P - 42 Avoid expanses of surface parking and r-eq �i�encouraae the �
consolidation and location of parking to the rear or side of
buildings where appropriate .
LU - P - 43 When updatina the Develoqment Code ' s parkina standards or
preparina specific plans , �evaluate parking ratios for the Town
Center to balance the financial feasibility of development
projects with the provision of adequate parking for visitors .
Coordinate with developers and transit agencies to the extent I
possible to provide alternative modes of transportation to
allow for reduced parking requirements .
LU - P - 44 When warranted , �i�e a feasibility study should be I
prepared for any hotels proposed in the Town Center area to
demonstrate market demand and economic viability .
Diamond Bar General Plan 2040 � LAND USE & ECONOMIC DEVELOPMENT 5
LAND USE & ECONOMIC DEVELOPMENT
Community Core Overlay
LU - P - 45 Prepare� ^ � � ��T� a master plan or specific plan be
�e�ed-for any future development within the Community
Core overlay area that creates a n^ ,� � + or_ �, � � rro ,� mixed - use ,
pedestrian - oriented community and regional destination .
Approximately 100 acres north of Grand Avenue is to support
a park or consolidated golf course along with additional
community or civic uses . The southern portion is to
accommodate a mix of uses emphasizing destination and
specialty retail , dining , and entertainment , including
opportunities for residential , hospitality , and community and
civic uses .
� LU - P - 46 Where appropriate , �require development to provide
courtyards and plazas , public art , and landscaped open
spaces and pathways between buildings that promote safe
and convenient pedestrian movement .
� LU - P - 47 ���+r� +-�aBuildings should be designed to define the
public realm and promote sidewalk activity and
neighborhood interaction in public spaces .
� LU - P - 48 Promote �-eqt�+�e convenient , attractive , and safe pedestrian ,
bicycle , and transit connections both within the Community
Core area and between the Community Core and
surrounding neighborhoods and other destinations within
Diamond Bar .
LU - P - 50 Where practicable , consolidated and
located parkinq in a manner that encourages pedestrian
activity . Avoid expanses of surface parking ( see Chapter 3 ,
Community Character and Placemakinq ) .
Public Facilities , Open Space , and Hillsides
Go � ` s
I LU - G - 27 Designate adequate ' ' land
throuqhout the community for educational , cultural ,
recreational , and public service activities to meet the needs of
Diamond Bar residents .
LU - G - 28 Preserve open space , ridgelines , and hillsides to protect the
visual character of the city , provide for public outdoor
recreation , conserve natural resources , support groundwater
Diamond Bar General Plan 2040 � LAND USE & ECONOMIC DEVELOPMENT 6
LAND USE & ECONOMIC DEVELOPMENT
recharge , protect existing and planned wildlife corridors , and
ensure public safety .
For thepurposes of this qoal, 9� en space is defined as any �
parcel or area of land or water that is essentially
unimproved and devoted to open space use , which may
include the preservation of natural resources, the managed
production ofresources, outdoorrecreation, the protection
of public health and safety, support for the mission of
military installations, or the protection of tribal cultural
resovrces ( California Government Code Sections 51075
and 65560J . Unimproved land that is designated for other
uses is considered vacant land rather than open space but
may become open space if it is dedicated, acquired by a
public entity, or otherwise preserved in perpetuity.
Dedicated open spaces are designated on the Land Use
Diagram with the Open Space land use classification .
POLICIES
LU - P - 52 When opportunities arise , �collaborate with public service I
providers and agencies including , but not limited to , the Los
Angeles County Department of Parks and Recreation , Walnut
Valley and Pomona school districts , Los Angeles County
Sheriff' s Department , Los Angeles County Fire Department , and
Walnut Valley Water District to designate and pursue
acquisition of land for public facilities as necessary to serve
unmet facility needs of Diamond Bar residents .
LU - P - 56 Ensure that development on privately- owned , residentially
designated land in hillside areas is compatible with surrounding
natural areas by promotina the followina desiqn
principlesro ,� � , � r� r ,-� + hrv + r�lo � iolr� r� rnor� + ;
a . Minimize�--as articulated by the landform grading criteria
of the Development Code ' s Hillside Management
reaulations8i�� � ����excavation , grading , and
earthwork to retain natural vegetation and topography;
b . Preserves existing vistas of significant hillside features such �
as ridgelines , particularly from public places ;
c . Doe� not create unsafe conditions ;
d . Incorporate site and architectural desians that are �s
sensitive to natural contours and land forms and � n � +�-� ���
� � � � � � , � � � ' � � ^' � � � hydrological features ;
Diamond Bar General Plan 2040 � LAND USE & ECONOMIC DEVELOPMENT 7
LAND USE & ECONOMIC DEVELOPMENT
e . Preserve� natural watersheds , including existing vegetation
within undeveloped hillside areas to the maximum extent
feasible , including mature trees and native plant materials ;
I f . � Incorporate fuel modification as part of the Fire
Department ' sn � � +� approved fuel modification
program ;
g . Utilizes planting palettes consisting of drought tolerant , fire
resistant , non -invasive plants that are native to or
compatible with those ��s-�+�El� r �eTk��-� e ^ f-�,�
m � + �� '�in the surrounding area ; and
h . Groups plants within swale areas to more closely reflect
natural conditions within landform graded slopes .
Diamond Bar General Plan 2040 � LAND USE & ECONOMIC DEVELOPMENT 8
E
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COMMUNITY CHARACTER & PLACEMAKING
Revised Policies
October 8 , 2019
� Overall Character and Desian
City Identity
CC - P - 2 �e�+�elncorporate prominent corner architectural features ,
such as prominent entries or corner towers , on new
development at key intersections or gateways .
CC - P - 3 �eEncouraae new mixed - use development to �
incorporate public art that celebrates the history and
character of Diamond Bar to reinforce community identity,
create unique places , and provide a basis for community
pride and ownership .
Streetscapes and Building to Street Interface
CC - P - 8 Where sound walls or perimeter walls or fences are permitted ,
Yo,�o + h� they should be stylistically integrated with
adjacent structures and terrain , and to use landscaping and
vegetation to soften their appearance .
Parks and Open Spaces
CC - P - 13 Encouraae ' landscaped common public spaces I
Er �eto be incorporated into new mixed - use development .
CC - P - 16 ��Ensure that common spaces be integrated elements of �
development , coordinating landscaping and amenities with
the projects ' architecture and character .
Site Planning and Parking
CC - P - 21 �-e�G SSite plans should #�e be desiqned to create pedestrian - �
oriented neighborhoods that follow these guidelines :
a . Buildings should be oriented to the street ;
Diamond Bar General Plan 2040 � COMMUNITY CHARACTER & PLACEMAKING 1
COMMUNITY CHARACTER & PLACEMAKING �
b . Garages and parking areas should be screened and / or
located at the side or rear of properties wherever possible ;
and
c . Landscaping , sidewalk conditions , and other streetscape
� elements should be improved during rehabilitation and
new construction .
� CC - P - 23 Where a �propriate and feasible , �locate and orient active
uses ( such as commercial uses and parks ) along the street
edges of new mixed -use development , at street corners , or
along main roadways internal to larger developments .
Building Massing and Design
CCp 4 r� � no � i I r� mor� } � i-Io c � rr� rlrvr Fhrv + r� r � � iirlo
� f � 2 � ��i �/'�v-�r��-rr�.T'r�-aa'c.�a�,� —rrra-i—PrvvTvt.
,�, o ,� � , � Y ,� �, � � ,� r; + or� � + „ � Ensure that new development does
not cast significant shadows over existing development .
Require detailed shadow studies as part of development
review where appropriate .
� CC - P - 33 �eEncouraae new mixed - use and commercial
development to incorporate visual quality and interest in
architectural design on all visible sides of buildings through the
following approaches :
a . Utilizing varied massing and roof types , floor plans , detailed
planting design , or color and materials ;
b . Maintaining overall harmony while providing smaller-scale
variety ; and
c . Articulating building facades with distinctive architectural
features like awnings , windows , doors , and other such
elements .
Diamond Bar General Plan 2040 � COMMUNITY CHARACTER & PLACEMAKING 2
COMMUNITY CHARACTER & PLACEMAKING �
Neiahborhood Mixed Use Focus Area
CC - P - 36 Develop specific building height and other development
standards through implementation mechanisms such as the
City' s Development Code � ^ � � nry nY,� � r � r � o and master or �
� specific plans .
Town Center Mixed Use Focus Area
CC - P - 42 Prioritize retail and other uses that promote pedestrian activity
on�-# the ground floor of buildings + „ ro + � � � � r ,r „ + hor � � � o �
� r + r� r� m � + o r� or�loc + rinri rvi- + i � ii +� i
CC - P - 45 ?�� � � ���#The design of new development should #e be
pedestrian - oriented , with the majority of building frontages
located at the new street edge and with entrances located
along the roadway or along pedestrian pathways or public
spaces .
CC - P - 46 �e�+�eEnsure that new buildings #�employ horizontal and
vertical building articulation and diversity in color, materials ,
scale , texture , and building volumes .
Transit - Oriented Mixed Use Focus Area
CC - P - 52 ;;�/ ^�;��v+t ����+„ „ f � r ,� � � � + r" + „ hHighlight gateways and
access to the transit facilities through landscape and signage
improvements .
(������� iiro ry r� i ihli � v� rrL ir� + ho rvr � � f C�T rn�T��o��c
� n ���vFii--�1�C��W F�titti�Fr� V r+ n f ry ro rI o � i o I � v� m o ri +
. ( No longer applicable because this
area has been detached from the proposed TOD -MU district. )
CC - P - 57 �ea�-ePromote the pedestrian comfort and safety of �
crosswalks along South Brea Canyon Road and South Lemon
Avenue .
CC - P - 59 Consolidate parking underground or in shared structures away
from the street edge- �where possible . ,- �Above -grade �
parking structures should be wrapped with residential uses
Diamond Bar General Plan 2040 � COMMUNITY CHARACTER & PLACEMAKING 3
COMMUNITY CHARACTER & PLACEMAKING '
where they front onto active streets . If active uses are not
feasible , frontages should be architecturally attractive . This
may include unique designs and materials such as glass ,
articulated masonry , murals , or landscaping setbacks .
�
- Community Core Focus Area
� CC - P - 60 �� � � Yo + hr � guildings should be designed to define the
public realm and promote sidewalk activity and public spaces
for neighborhood interaction .
CC - P - 62 Create a fine- grained pedestrian -scaled street network and
� �eensure that buildings and streetscapes # e-encourage
pedestrian activity and comfort .
� CC - P - 63 ��� �in—;" �� Parking should be consolidated and located in
a manner that encourages pedestrian activity . Avoid
expanses of surface parking .
Diamond Bar General Plan 2040 � COMMUNITY CHARACTER & PLACEMAKING 4
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CIRCULATION
Revised Goal and Policies
October 8 , 2019
�
� Transportation Network and Street Design
POLICIES
CR - P - 1 When redesigning streets , plan for the needs of different
� modes by �r-�eo�1� considerina elements such as shade
for pedestrians , safe pedestrian -friendly crossings / intersections ,
lighting at the pedestrian scale , bike lanes , signage visible to
relevant modes , transit amenities , etc .
� CR - P - 2 �'� ry � � ��� Promote new street designs and efforts to retrofit
existing streets in residential neighborhoods minimize traffic
volumes and / or speed as appropriate without compromising
connectivity for emergency vehicles , bicycles , pedestrians ,
and users of mobility devices .
� CR - P - 5 �-e�-�} Necessary transportation improvements �eshould be
in place , or otherwise guaranteed to be installed in a timely
manner, before or concurrent with new development . In
evaluating whether a transportation improvement is
necessary , consider alternatives to the improvement
consistent with CR -G- 1 , and the extent to which the
improvement will offset the traffic impacts generated by
proposed and expected development .
I �' R ' f � 6 ��a � � � ro + hrv + rvll r� o � ni rlo � iol � r� mor� + c + i � l-! � i + ho imr� rr � + r� f � i � hi � lo
,-,., ; �o � + Y� „ o � o ,� � � � nnr � � r .� Continue to implement congestion
mitigation measures to ensure that new projects do not
significantly increase local City congestion based on defined
level of service ( LOS ) standards .
� CR - P - 7 Support the Bdevelopment of City street design standards
that :
a . Address the needs of different modes according to
roadway classification ;
b . Reduce the potential for conflicts and safety risks between
modes ; and
c . Support and manage the use of transportation options that
will become increasingly popular in the future , such as
TNCs , AVs , micro -transit ( privately operated transit ) , and
other emerging transportation technologies .
Diamond Bar General Plan 2040 � CIRCULATION 1
CIRCULATION ' '
Safety
CR - P - 22 Implement traffic calming measures to slow traffic on local and
collector residential streets and prioritize these measures over
Icongestion management where appropriate and feasible .
Transportation Demand Management �
� CR - P - 24 As opportunities arise , c�oordinate with local , regional , and
State agencies to encourage and support programs that
reduce vehicle miles traveled , such as preferential carpool
and car share parking , parking pricing , on -site childcare ,
flexible work schedules , subsidized transit passes , and
ridesharing .
Inter - Jurisdictional Coordination
� CR - P - 26 As opportunities arise , �coordinate with other jurisdictions ,
including neighboring cities , Los Angeles County , San
Bernardino County , and Caltrans , on improvements to street
segments common to the City of Diamond Bar and other
jurisdictions .
CR - P - 28 As opportunities arise �coordinate with Pomona Unified
School District and City of Chino Hills to ensure the timely design
and construction of secondary access to Diamond Ranch High
School that would not substantially increase traffic in
surrounding residential neighborhoods .
Pedestrian and Bicycle Circulation
POLICIES
Bicycle and Pedestrian Network
� CR - P - 31 Consider updatinq �-�#e the Parks and Recreation Master
Plan using community input and best practices to identify
bicycle infrastructure needs such as gaps in the network ,
prioritize facilities and improvements , and identify funding for
proposed facilities . Review and update the plan as necessary .
� " CR - P - 32 �ePromote pedestrian and bicycle connectivity in
existing residential neighborhoods , utility easements , and / or
flood control channels , including connections through cul - de-
sacs to other streets or community facilities where feasible .
� CR - P - 34 As opportunities arise , �collaborate with neighboring
jurisdictions and colleges such as Cal Poly Pomona and Mt . San
Diamond Bar General Plan 2040 � CIRCULATION 2
CIRCULATION ' �
Antonio College to establish a safe and efficient bicycle route
between Diamond Bar and these institutions .
Design and Programs
� CR - P - 36 Where appropriate , �glant street trees and provide
6 landscaping along major pedestrian and bicycle routes to �
provide shade and barriers between cyclists and motorists , as -
well as enhance aesthetics .
� CR - P - 38 If warranted by demand , s�tudy the feasibility of implementing
a bike share program to connect neighborhoods and major
destinations , such as the Transit- Oriented , Neighborhood , Town
Center, and Community Core Overlay mixed -use areas ; local
schools and colleges ; parks ; and commercial centers .
Bicycle and Pedestrian Movement in Mixed Use Areas
CR - P - 39 Ensure a safe environment for pedestrians and cyc � ists while
allowing for local traffic to access freeways in the
Neighborhood Mixed Use area through the following
strategies :
; ( Redundant ; see b below . )
a . Widening sidewalks , providing planting strips between
sidewalks and streets and providing pedestrian amenities
such as shade trees and street furniture along Diamond Bar
Boulevard ;
b . Implementing traffic calming measures such as reduced
I vehicle speeds , stripinq and sianaaer^ ��� along
Diamond Bar Boulevard ;
c . Buffering bike lanes along Diamond Bar Boulevard ;
d . Enhancing pedestrian crossings at the intersection of
Diamond Bar Boulevard and Sunset Crossing Road , at
Diamond Bar Boulevard and Highland Valley Road , and at
Diamond Bar Boulevard and the SR - 60 on / off ramps ; and
e . Incorporating multi- use pathways internal to new
development and connecting to existing development .
Safety
I CR - P - 42 Develop and implement ��--���� + ^ � � " � � ! � � � c � fo
p ^�Qs���i� r� programs in collaboration with interested
Diamond Bar General Plan 2040 � CIRCULATION 3
CIRCULATION ' �
stakeholders such as school districts , senior living facilities , and
community organizations to encourage active transportation
among students and seniors while ensuring student and senior
safety .
I CR - P - 43 When planninq capital improvement proqrams , consider
� projects that �strengthen the protection of cyclists in bike lanes �
by implementing improvements such as increasing visibility of
lane markings and signage , increasing bike lane widths , raising
lanes , designing safer intersection crossings and turns , and
buffering lanes from traffic wherever feasible , prioritizing
bicycle lanes along arterials .
Public Transportation
GOALS
� CR - G - 13 " " � ���Su �port the availability , efficiency , and effectiveness
of Integrate transit nodes and connections with adjacent
existing and proposed developments and destinations—such
as employment centers , commercial centers , major
attractions , and public pedestrian spaces—to make them
more accessible to transit users .
POLICIES
� CR - P - 46 Where feasible , �integrate transit nodes and connections with
adjacent existing and proposed developments and
destinations—such as employment centers , commercial
centers , major attractions , and public pedestrian spaces—to
make them more accessible to transit users .
� CR - P - 47 As opportunities arise , �coordinate with Foothill Transit ,
Metrolink , and other transit providers to incorporate real -time
information systems at transit stops so that passengers will know
when their vehicle is expected to arrive .
� CR - P - 48 As opportunities arise , 1�work with Foothill Transit to maintain
and improve bus stops and shelters , as well as identify areas
where service can be improved or expanded to increase
system use .
� CR - P - 50 As o �portunities arise , �coordinate with Metrolink and Union
Pacific Railroad ( UPRR ) to provide more frequent service at the
City of Industry station , including service for shorter trips , to
increase the convenience and use of transit .
� CR - P - 51 �' ^ � + � � � � Q + ^ � Support , where feasible , privately funded local
transit systems that are accessible for seniors , youths , and
Diamond Bar General Plan 2040 � CIRCULATION 4
CIRCULATION ' '
individuals with disabilities , to ensure that all community
members have the ability to travel while decreasing
congestion .
Parkin
POLICIEs �
CR - P - 53 �#eConsider updating parking standards in the
A����-p�IDevelopment Code to ensure that they are
reflective of the community ' s needs , using current data on
parking demand and taking into consideration demographics
and access to alternative modes of transportation .
I CR - P - 54 Consider incorporatinqJ�ea�e +=�e criteria in the
�41�' ��; Development Code to allow reductions in parking
requirements in exchange for VMT reduction measures .
I CR - P - 55 Consider the establishment of +�e �common bicycle
parking requirements for appropriate uses�including multi -
family residential and office—in the Municipal Code .
CR - P - 56 � � + ��;—�r��-�s—� r^ „ � �' � Encouraqe dedicated
parking and charging stations for �electric �vehicles .
CR - P - 57 Consider incentives to encourage carpoolinq , such as
;��e�+�Ze—t�e---� preferential parking for high -
occupancy vehicles + ^ or � ^ , , r� � o � ryrr ^ ^ ' ; n �
CR - P - 59 As o �portunities arise , �work with Caltrans to evaluate existing
Caltrans - operated park- n -ride facilities within the City and
expand the facilities where necessary .
Goods Movement
POLICIES
Truck Routes
I CiR ' P � 62 �c� ico + ho /"I � Cl /YYl /YFI (lYl � f � n��-��� �.�T,Trr'�' ��rm-�m�'-ii �o � ri � r- I. + r.�vffir-
+ hr,, , , � h � r no � Y ro � „� on + � r ��;�; . Maintain truck routes with
signage between industrial areas and freeway interchanges to
discourage truck travel through residential neighborhoods ,
and provide truck route information to truck routing software
providers .
Diamond Bar General Plan 2040 � CIRCULATION 5
��
�� �\\�r� ' �
; , � -
JOINT MEETING of the
CITY COUNCIL and
DIAMOND BAR PLANNING COMMISSION
� �9 � �? i �� �� i;� �. ,,�� CI � ol- ��� !�� 'ii � AGENDA REPORT
E
AGENDA ITEM NUMBER : 3
MEETING DATE : October 8 , 2019
TITLE : GENERAL PLAN UPDATE — REVIEW AND DISCUSSION
OF THE GENERAL PLAN 2040 PUBLIC REVIEW DRAFT
CHAPTERS 5 THROUGH 8 , PUBLIC REVIEW DRAFT
CLIMATE ACTION PLAN , AND DRAFT EIR
RECOMMENDED ACTION :
Receive the staff presentation , receive public comments , and provide feedback on the
Public Review Draft General Plan Chapters 5 through 8 and the Public Review Draft
Climate Action Plan to facilitate the preparation of the public hearing draft documents .
BACKGROUND :
At the September 25 , 2019 Joint Study Session , the first four chapters of the Public
Hearing Draft General Plan were reviewed . The purpose of this Joint Study Session is to
conclude the Draft General Plan discussion by covering the remaining four chapters , and
then discuss the goals and objectives of the Draft Climate Action Plan ( CAP ) .
In addition , staff will provide an overview of the Draft Environmental Impact Report ( DEIR )
prepared to evaluate the potential environmental effects of implementing the General
Plan and CAP . However , it is not the intent of this meeting to receive public comments
on the DEIR ; comments should be made in writing and submitted directly to the
Community Development Department no later than the end of the public review period on
October 31 , 2019 . Comments received by the deadline will be included in the Final EIR ,
along with written responses prepared in accordance with the California Environmental
Quality Act ( CEQA) .
DISCUSSION :
Draft General Plan Chapters 5 through 8
Chapter 5 — Resource Conservation
Conservation and open space elements are among the seven general plan elements
mandated under State law . A conservation element is required to provide guidance for
General Plan 2040 : Joint City Council/ Planning Commission Meeting #5 � Page 1 of 7
October 8 , 2019
the conservation , development , and utilization of natural resources , including water
quality and hydraulic force , forests , soils , rivers and other waters , harbors , fisheries ,
wildlife , minerals , and others as applicable to each jurisdiction . An open space element
is intended to ensure that cities and counties recognize that open space land is a limited
and valuable resource , and that they prepare and carry out open space plans to guide
the comprehensive long - range preservation and conservation of open space land . The
Resource Conservation Chapter is a combination of these two required elements , as
� several of the issues addressed under each topic are closely related .
Local natural resources play a major role in making the Diamond Bar a unique and
desirable place to live . When asked what they love about their City , Diamond Bar
residents rank its open spaces and the diversity of plants and wildlife that inhabit those
areas alongside our safe , attractive neighborhoods and excellent schools .
The Draft General Plan recognizes that Diamond Bar is largely built out , and to preserve
and protect the character of our natural setting , most new growth must be achieved
through infill development and by accommodating intensification within the identified
focus areas . The Resource Conservation Chapter provides policies to guide the City ' s
stewardship of its resources , ensuring the conservation and enhancement of open
spaces , biological resources , water and air quality , and cultural resources .
Chapter 6 — Public Facilities & Services
This Chapter sets forth the policy framework for the City to manage infrastructure and
services , identify areas for improvement , and ensure that public utilities , services , and
programs can meet the needs of the community into the future .
This Chapter is organized into three major topics areas : Parks and Recreation , Schools
and Community Facilities , and Utilities . The Goals and Policies applicable to these topics
emphasize the following strategies :
• Parks and Recreation
o Maintain and expand the City' s system of parks , recreation facilities , open spaces
and trails to meet current and future recreational needs .
o Prioritize the dedication new parks over the payment of in - lieu fees in conjunction
with residential development where possible .
• Schools and Community Facilities
o Continue to support efforts to maintain the excellence of our public schools
o Continue to provide all residents with access to high quality learning opportunities
in cooperation with the two school districts , the L . A . County Library system and
community organizations
o Continue to provide and expand opportunities for all residents to gather , interact ,
exchange ideas , and establish and realize common goals .
General Plan 2040 : Joint City Council/ Planning Commission Meeting #5 � Page 2 of 7
October 8 , 2019
• Utilities
o Maintain and upgrade the City' s infrastructure systems to ensure that utilities and
municipal services meet the current and future needs of the City .
o Work with telecommunications providers to deliver the best services possible to
Diamond Bar residents , businesses and visitors .
� Chapter 7 — Public Safetv
The purpose of this Chapter is to identify the natural and man - made public health and
safety hazards that exist within the City , and to establish preventative and responsive
policies and programs to mitigate their potential impacts , particularly in light of our unique
environmental , seismic , and topographic conditions . This Chapter also addresses the
excellent public safety services provided by the L .A . County Sheriff' s and Fire
Departments , and endorses the continuation of the contract model of government for the
continuation of these services . Lastly , the Public Safety Chapter addresses noise and
serves to limit the exposure of the community to excessive noise levels .
The Chapter includes up -to -date and detailed maps of the City ' s hazard areas by
category , which are to be used to guide the ongoing development of plans and strategies
to prepare for and protect the community from wildfire threats , geologic events , and other
potential hazards . The Goals and Policies emphasize partnerships with local , regional
and State agencies to ensure the City' s readiness for public safety threats through action
plans and educational efforts .
Chapter 8 — Communitv Health and Sustainabilitv
The topics covered in this Chapter include relatively recent State law requirements that
general plans include "environmental justice " policies that identify any disadvantaged
communities within the Planning Area , and provide policies to reduce the unique or
compounded health risks facing those communities . The additional health - related
sections of this chapter are not required by State law , but address issues identified
through community outreach efforts to be important to Diamond Bar residents .
The Goals and Policies in this Chapter identify strategies to facilitate healthy and active
lifestyles , social connections and celebrating diversity , access to healthy food , and
climate change resilience . Many of these strategies could be incorporated into existing
or future City programs and Development Code standards .
Revisions to Draft Policy Language
Comments received at the September 25 , 2019 joint meeting regarding the regulatory
tone of several draft policies in Chapters 1 through 4 used led staff to prepare rephrased
Goals and Policies for those chapters . To address similar concerns likely to be expressed
regarding the policy language in Chapters 5 through 8 , staff prepared redline/strikeout
revisions to similarly written Goals and Policies in those chapters for the Planning
Commissioners and Councilmembers to consider . These revised Goals and Policies are
included in Attachment 1 .
General Plan 2040 : Joint City Council/ Planning Commission Meeting # 5 � Page 3 of 7
October 8 , 2019
As with Chapters 1 through 4 , the proposed text revisions to not alter the intent of the
draft Goals and Policies . The General Plan is the City ' s governing policy document and
all actions taken or authorized by the City must be consistent with the General Plan .
Climate Action Plan
� Be innin in 2006 the State Le islature and Executive branch assed a series of laws
9 9 , 9 p
and Executive Orders collectively mandating that California reduce its greenhouse gas
( GHG ) emissions to 80 percent below 1990 levels by 2050 . SB 97 further requires that
GHG emissions be analyzed as part of the CEQA review process ( EIRs , for example ) .
To reach these targeted reductions , the California Air Resources Board ( CARB )
recommends that local governments target six metric tons carbon dioxide equivalent
( MTCOze ) per person per year by 2030 , and 2 MTCOze by 2050 .
A Climate Action Plan ( CAP ) is a comprehensive inventory of specific activities a public
agency should undertake to reduce greenhouse gas ( " GHG " ) emissions that originate
within its jurisdiction . The City of Diamond Bar has prepared a draft Climate Action Plan
to document how it will be able to reduce its GHG emissions in compliance with state
mandates and goals .
The Draft CAP applies broadly accepted climate science methodologies to estimate
Diamond Bar' s per capita MTCOze emissions for the Draft General Plan ' s horizon year .
Because current regulations only set forth 2030 and 2050 targets , the Diamond Bar CAP
interpolates 4 MTCO2e to be the target for 2040 .
The Draft CAP finds that with the Policies set forth in the Draft General Plan , Diamond
Bar will meet its mandated GHG reduction targets without being subject to additional GHG
reduction measures . Examples of such Policies include those promoting compact , mixed -
use development in the proposed Focus Areas , and facilitating other modes of
transportation through such means as expanding the City ' s bikeway network and
accommodating electric vehicle infrastructure .
In addition to validating the Draft General Plan ' s role in meeting Diamond Bar' s GHG
reduction targets , the City would benefit from adopting a Climate Action Plan in two more
ways . First , CAPs are currently the most defensible approach to CEQA GHG analyses .
Previous attempts to apply statewide GHG reduction standards have been successfully
overturned by the California Supreme Court . � Because CAPs specifically tailor GHG
reductions to the local level (which may be more restrictive than statewide standards ) ,
they more likely to survive legal challenges .
Secondly , CAPs enable streamlined GHG analyses for future development projects .
Once a climate action plan has been adopted , later , project-specific environmental
documents may rely upon that plan and its environmental impact report to streamline
project- level evaluation of GHG impacts under CEQA . This approach has been tested
' Ctr�. for Biological Diversity v. Dep 't of Fish & Wildlife , (2015 ) 62 Ca1 . 4th 204 , 225 , as modified on denial of
reh 'g (Feb . 17 , 2016) .
General Plan 2040 : Joint City Council/ Planning Commission Meeting #5 � Page 4 of 7
October 8 , 2019
and upheld by the California Supreme Court . 2 This streamlining process should also help
to reduce costs when preparing environmental analyses for subsequent projects . For
example , if individual projects are consistent with the CAP , then GHG impacts are unlikely
to be significant and no additional mitigation and monitoring measures should be required .
On October 3 , 2019 , SoCalGas submitted an undated letter to the City regarding the
environmental benefits of natural gas (Attachment 2 ) . The comments relate to Chapter 4
of the Draft CAP , which consists of optional measures to further reduce GHG emissions , E
but are not required to meet our 2040 GHG target based on the methodologies used to
estimate GHG emissions .
Environmental Impact Report
The Draft Environmental Impact Report ( DEIR ) evaluates the potential impacts of the
proposed General Plan update and CAP in accordance with the CEQA . For purposes of
brevity , the proposed General Plan Update and CAP are collectively referred to in the
DEIR as the " Proposed Project . "
The purpose of an EIR is to inform decision - makers and the general public of the potential
significant environmental impacts of a proposed project . An EIR must also consider the
availability of mitigation measures to minimize significant impacts and evaluate
reasonable alternatives to a project that may reduce or avoid significant environmental
effects .
The DEIR prepared for the Proposed Project is a program EIR that evaluates these policy
documents as a whole , and broadly identifies the effects that may occur with their
implementation . As a programmatic document , this DEIR does not assess site -specific
impacts . Any future development project made possible by the Proposed Project would
be subject to individual , site -specific environmental review , as required by State law . The
DEIR represents the best effort to evaluate the Proposed Project given their planning
horizon through the year 2040 .
The DEIR concludes that the Draft General Plan ' s Goals and Policies mitigate most of
the potential impacts associated with its implementation . However , the DEIR also finds
that the Proposed Project is not entirely self- mitigating , and identifies 11 mitigation
measures that subsequent projects would be subject to . The DEIR also finds that the
number of potentially significant , unavoidable impacts is lower than it would be if the
General Plan was not updated ; this is primarily due to policies encouraging mixed - use ,
infill development .
Orqanization of the DEIR
To assist the reader in navigating the DEIR , it begins with an Executive Summary that
provides a detailed synopsis of the Proposed Project , and a summary of environmental
impact findings contained in the body of the DEIR . The Executive Summary includes
Z Center for� Biological Diversity v. Department of Fish & Wildlife (2015 ) 62 Ca1 . 4th 204 , 230 ; Mission Bay Alliance
v. Off ce of Commzinity Investment & Infrastrz�ctirre (2016 ) 6 Ca1 .App . Sth 160 .
General Plan 2040 : Joint City Council/ Planning Commission Meeting # 5 � Page 5 of 7
October 8 , 2019
tables that list all potentially significant impacts identified throughout the DEIR , as well as
all mitigation measures that can be imposed at the local level to reduce those impacts .
The Executive Summary provides a concise roadmap to the DEIR , and is intended to help
the reader navigate the document more efficiently by identifying areas of controversy , and
which sections most likely merit a full reading based on the reader' s expertise , interests ,
areas of concern , or other criteria .
i Following the Executive Summary , the DEIR is organized into the following chapters :
1 . Introduction — Introduces the purpose for the EIR , explains the EIR process , and the
intended uses of the document .
2 . Project Description — Describes in detail the proposed General Plan and CAP ,
including the location and planning boundaries , purpose and objectives , buildout , and
implementation .
3 . Environmental Settings and Impacts — Analyzes the environmental impacts of the
Proposed Project . Project Impacts are organized by major topic . Each topic area
includes a description of the environmental setting , significance criteria , methodology
and potential impacts .
4 . Analysis of Alternatives — Presents a reasonable range of alternatives to the
Proposed Project including the No Project Alternative and two General Plan
alternatives ; provides discussion of environmental impacts associated with each
alternative , compares the relative impacts of each alternative to those of the Proposed
Project and other alternatives , discusses the relationship of each alternative to the
Proposed ProjecYs objectives , and identifies the environmentally superior alternative .
5 . CEQA Required Conclusions — Summarizes significant environmental impacts ,
including growth - inducing , cumulative , and significant and unavoidable impacts ;
significant irreversible environmental change ; and impacts found not to be significant .
6 . References — Lists documents and other information sources used in the preparation
of the EIR .
7 . List of Preparers — Identifies the persons and organizations that contributed to the
preparation of the EIR .
8 . Appendices — Includes all agency and public comments received during the public
scoping period priorto the preparation ofthe DEIR , as well as technical documentation
of data used for environmental analysis in the EIR .
EIR Certification
The following overview of the EIR certification process describes the procedures
mandated by CEQA that the City must follow prior to adopting the General Plan and CAP .
• Public Review — The DEIR was distributed for review to the public and interested and
affected agencies for a period of 45 days to provide comments on the sufficiency of
the document . Electronic copies were mailed to the California Office of Planning and
Research State Clearinghouse for distribution to State agencies . The City also mailed
electronic copies to various public agencies , tribal organizations and public utilities .
The DEIR was also posted on the General Plan Update website
(www . diamondbarqp . com ) , and hardcopies were made available for review at City
General Plan 2040 : Joint City Council/Planning Commission Meeting #5 � Page 6 of 7
October 8 , 2019
Hall and the Diamond Bar Public Library . The public comment period began on
September 16 , 2019 , and concludes on October 31 , 2019 . Comments received as of
the writing of this report consisted requests to extend the public by at least 45
additional days .
• Final EIR — Following the end of the public review period , the City , will consider all
comments and will provide written responses to comments received on the DEIR . All
comments and responses will be included in the Final EIR ( FEIR ) . The response to
� comments , a Mitigation Monitoring and Reporting Program ( MMRP ) , Findings of Fact , �
and a Statement of Overriding Considerations for any impacts identified in the EIR as
significant and unavoidable will be prepared and compiled as part of the EIR
finalization process .
• Planning Commission Hearing — The Planning Commission will conduct a public
hearing prior to adopting resolutions with recommendations to the City Council
whether to certify the FEIR and adopt the General Plan and CAP . The FEIR will be
available for public review at least 10 days before the public hearing in order to provide
commenters the opportunity to review the written responses to their comment letters .
• City Council Hearing — The culmination of this process is a public hearing where the
City Council will determine whether to certify the Final EIR , and then whether to adopt
the General Plan and CAP .
NEXT STEPS :
Should the Councilmembers and Commissioners wish to discuss these topics further , a
third Joint Meeting will be scheduled for October 22 , 2019 . If not , staff will prepare the
Public Hearing Draft General Plan and CAP , and Final EIR .
A Planning Commission public hearing to consider recommending certification ofthe Final
EIR , and adoption of the General Plan and CAP is tentatively scheduled for November
12 , 2019 , followed by a City Council public hearing tentatively scheduled for December ,
3 , 2019 to consider certifying the FEIR and adopting the General Plan and CAP .
Prepared by :
��
for Daniel Fox Greg Gubman , AICP
City Manager Community Development Director
Attachments :
1 . Revised Goals and Policies for General Plan 2040 Public Review Draft Chapters 5 - 8
2 . SoCalGas comments on the Draft Climate Action Plan
General Plan 2040 : Joint City Council/ Planning Commission Meeting # 5 � Page 7 of 7
October 8 , 2019
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ATTACHMENT 1
FP�vi � ed G � � i � and Poiieie � for
General Plan 2040 Public Review Draft
Chapters 5 throuqh 8
RESOURCE CONSERVATION
Revised Policies
October 8 , 2019
� Open Space �
RC - P - 1 As opportunities arise , �obtain and designate open space �
land through acquisition techniques such as :
a . Incorporatina open space �
and recreational areas into the design of new
development projects , preserving and enhancing as open
space significant stands of vegetation , natural landforms ,
and any areas of special ecological significance through
site design approaches such as clustering and ecological
planning .
b . Allowing clustering or transferring of all or part of the
development potential of a site to a portion of the site to
preserve significant environmental resources such as
natural and native habitats ( oak woodland , coastal sage
scrub , etc . ) , natural creeks , artesian springs , vernal pools ,
seeps , riverines , wetlands , riparian habitats , wildlife corridors
and linkages , and natural geological features within
proposed developments as open space .
c . Allowing for acquisition of open space lands through the
entitlement process and the transfer of densities among
land uses of like designation .
d . Collaborating with land trusts and other conservation
groups to acquire open space land through , but not limited
to , conservation easements .
RC - P - 4 Maintain an inventory of open lands �k�that were set aside
for open space uses as part of �e�+e�s—developments
approved �l� + hr� i � � h + ho r- „ � � n + „ prior to City incorporation ,
and require verification as to the existence of any potential
open space restrictions previously approved on a subject
property prior to � � �a�gapprovinq development �
proposals .
RC - P - 8 �Su �port and cooperate with the efforts of other �
jurisdictions and conservation organizations to protect
prominent ridges , slopes , and hilltops in and adjacent to the
City and its Sphere of Influence to the extent feasible .
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION 1
RESOURCE CONSERVATION
Such features include , but are not limited to, areas identified
by Los Angeles County as Significant Ecological Areas; Tonner
Canyon ; the hills within Tres Hermanos Ranch; and the hillsides
along SR -57, between Diamond Bar and Brea .
� Bioloaical Resources �
RC - P - 9 Require , as part of the environmental review process prior to
approval of discretionary development projects involving
parcels within , adjacent to , or surrounding a significant
biological resource area , a biotic resources evaluation of the
site by a qualified biologist , requiring that time -specific issues
such as the seasonal cycle of plants and migration of wildlife
are evaluated . Such evaluation shall analyze the existing and
potential natural resources of given site following at least one
site visit as well as the potential for significant adverse impacts
on biological resources , and shall identify measures to avoid ,
minimize , or mitigate any impacts that would degrade its
healthy function . In approving any permit based on the
evaluation , the City shall require implementation of mitigation
measures supported by the evaluation , or work with the
applicant to modify the project if mitigation is determined not
to be adequate to reduce the impacts to a non -significant
level .
� RC - P - 10 Require , to the greatest extent feasible , new development to
preserve mature native trees including oak and walnut , and
trees of significant cultural or historical value such as sycamore
and arroyo willow, etc . , as set forth under the Diamond Bar Tree
Preservation and Protection Ordinance . Review the ordinance
periodically and update it as necessary to reflect current best
practices .
RC - P - 11 Require that all development , including roads and trails ,
proposed adjacent to riparian and other biologically sensitive
� habitats avoid , to the greatest extent feasible , significant
impacts that would undermine the healthy natural functioning
of those areas . Require that new development proposed in
such locations be designed to :
a . Minimize to the greatest extent possible or eliminate
impacts on environmentally sensitive areas ;
b . Protect the visual seclusion of forage areas from road
intrusion by providing vegetative buffering ;
� c . Protect�+� e wildlife movement linkages to water, food ,
shelter, and nesting sites ;
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION 2
RESOURCE CONSERVATION
d . Allow wildlife and migration access by use of tunnels or
other practical means ;
e . Provide vegetation that can be used by wildlife for cover
along roadsides ;
f . Avoid intrusion of night lighting into identified areas through
� properly designed lighting systems ; �
g . Avoid impacts to wetlands , natural springs and seeps and
maintain access for wildlife or when natural water areas are
removed or blocked provide a locally suitable and equal
replacement ; and
h . To the greatest extent possible , prevent street water runoff
from flowing into waterways
RC - P - 14 �r��ae�Support and cooperate with the efforts of local school I
districts , environmental groups and volunteers to offer
environmental education programs .
Water Resources
Water Conservation
RC - P - 16 As opportunities arise , �coordinate with local water agencies I
to encourage and expand the use of reclaimed water, stored
rainwater, or household gray water for irrigation and other
appropriate uses and consider construction of dual water
systems , where feasible , for development
R��--R--�� � rr„ ^ � —��--^�,��e#er�s+v�--p�b I i�euT�c rr, + ^
e � �� at �r�a � ��s a��b� i�esses e � � + ��T� r�� ,e�,T
c # e,�� + Ili i + ir� r� v� r�ion +ir� r� � � ��o� r�c
o� �i n i o n ,
. ( This policy essentially restates
the objectives already set forth in Policy RC - P - 16 . )
RC - P - 19 �$ Ensure new development to reduce the waste of �
potable water through the use of drought-tolerant plants ,
efficient landscape design and application , and reclaimed
water systems where available .
RC - P - 20 �eEncouraae the implementation of the latest water
conservation technologies into new developments .
RC - P - 21 �eq-�+r� Ensure ��developers #e— provide information to �
prospective buyers or tenants within the City of Diamond Bar
regarding drought-tolerant planting concepts .
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION 3
RESOURCE CONSERVATION
Q� _ D _ 7 7 D � r ' "�r�--�S��Tn'vvT� h i�-i-ia�ra.rr''c���c�$-�v�'rrtpi�l�l.�rTc
�-��$�61�--C�1�1��IAf�-� �' ��i�i c rrr, i- o ` � ii + h + ho c � � '�'rra�,��c�-+r
� r+ h h � i c + r � o I �q ����h� � i+� i � c \A / rv + or_ �T�o��� r� r-lc�
. ( Policy is unnecessary because the City' s Water -
Efficient Landscape Ordinance already sets forth requirements
p for soil amendments and other methods to minimize
evapotranspiration . )
Water Quality
� _� �����,�el��� imr� r� � io + h rvi irli + � i � f c + � rm� nir + or or� + orir� ry Ir� � rvl
�C7Y—�'�g� r��m—�Q�—�vi A P�r-vaTrc�l �� e i I m r� rY �,
�-e ��tc m�rr����nrrv��� + h�cror� r� r� r+ � n _ci ���oc-+ici� +�-rivrr
�� ��Tr� nrJ / r�. r � ror + mori � r� f c + r� rm� nin � or + hr� � irvh��J
. ( Policy is unnecessary because it is merely
reciting existing State water quality regulations . )
�rt'E-��i �� Pc��Q�� +����e�} � ri i- i-v�—+a �� I � ��1F�T� � ��vii � i �vTiv�
�-er��r�l--P er-��ii �� •-� I � f i�rrc��^/ P P P D rrti i- + i + i � r� o r f rl C��j,p�
.� ., , , , , y
��L��J'���'� r'e�J�—t:F1-'Fl-��J�i�v i� � ry r� � m i r� i m i� .
al��� � �vrhr✓ta r'rrc��vr-rna � � �rvTar�r�c� �r�t f�1� ��}� �t� cr�i' ��i '~�^vr
�v'l�l�T TIT fr /'Y + I I'�Taf GT YYl Yl /l Y+ /V Yl � 'f rl� Y � \i�"GT; ITT��v� G' C��
l �
� o,� �,�,� r +� � +,�, �;� ( policy is unnecessary because it is merely
reciting existing State water quality regulations . )
RC - P - 27 �� Ensure that post- development peak stormwater runoff
discharge rates do not exceed the estimated pre -
development rate and that dry weather runoff from new
development not exceed the pre -development baseline flow
rate to receiving water bodies .
Air Quality
RC - P - 33 Consult with SCAQMD when siting new facilities with dust ,
odors , or Toxic Air Contaminant ( TAC ) emissions to avoid siting
those facilities near sensitive receptors and avoid siting
sensitive receptors near sources of air pollution . —�e�+�e
�,���� e��-���-s� �A�s�e--a+�c-� ^r��
� �+ ���4-�-��.��es+�mea;�e� t�i e t�-e� �re-�A ��+ h o �,-��
#"�,+--�4,�e�� i �p��E n � � + ;���c-e�#�r-s req��t��� ° ����
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION 4
RESOURCE CONSERVATION
�t�rCt3-1 � r� � + i f� i + !� o C�,Q,�j��r� ry r� r-J ro c i rl o r� � ri l-1 h i i c i n o c ���
a Q}QE cf� t�9 t �"12�f�6p 9S c '� '�pTi� I' �� �1�� I flG�$��F��� ^vT
p�T� ir� iv r� i + icc� rv� r� o ll� lo � ni frnm cr� ennnn r� � ii �lrvri � ol
Examples of facilities that may emit TACs as identified by the
SCAQMD include dry cleaners, gas stations, auto body shops,
� furniture repair shops, warehouses, printing shops, landfills, �
recycling and transfer stations, and freeways and roadways.
Refer to SCAQMD guidance for the most current list of facilities
that may emit TACs .
RC - P - 34 For new or modified land uses that have the potential to emit
dust , odors , or TACs that would impact sensitive receptors �
require the business owners to obtain all necessary �
SCAQMD clearances or permits , � � � ro � � � on + � � r � �, � � � � ro � � o �
prior to business license or
building permit issuance .
Sensitive receptors include residences, schools, childcare
centers, playgrounds, parks and other recreational facilities,
nursing homes, hospitals, and other medical care facilities .
��—P ���Q� �e�� i+�c�s��� �v-�I-�u�e��� et�;�t "�a�
�T�1�1GT1 � � 1�1'"TTTT�7lTf Y�1C�. 17 I Y� + �'l � P I lY Yl Yl I YllY n Y� lY YYl /Y \ / h �
� �YY1�u��`/ �], 1 /'YYllfl /" l"IYI + Yl \ / � C �' /VI'\ IICYIIYI /Y YYll � l !'Y !"1 � 1 /lYl 1'1Y/"1l'YYlYYYIC !Y �
ITI�TCa i i
mo /YY � r1 , � , � ,� o „ Y ,� � +, ,, � , � � o � o „ o � . � Deleted because the EIR finds
air quality impacts to be significant and unavoidable due to
Diamond Bar' s location within the South Coast Air Basin . The
EIR nevertheless includes mitigation measures to reduce
project- level impacts based on the latest available technology . )
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION 5
. -
.
PUBLIC FACILITIES & SERVICES
Revised Goals and Policies
� October 8 , 2019
� Parks and Recreation �
Goals
PF - G - 2 Provide new parks in concert with new residential
development , and strive to distribute�T�T�e-�� r� ��
parkland � � � � � + r� �, � , + � ,� o ,-� � � � + ryTa�y c�re�sthrouc�hout the ECity .
PF - G - 3 �-eq-�i�eEnsure that new development bears the costs of new
parks and recreation facilities that are needed to meet any
increase in demand resulting from the new development , or
from which the new development would benefit .
Policies
General
PF - P - 6 Monitor and seek to ,4actively engage in Cal Poly Pomona ' s I
plans for the redevelopment of the former Lanterman site , and
seek joint use opportunities for parks and recreation facilities
developed on the site .
Parks & Recreation Facilities
PF - P - 7 Endeavor to �distribute new parks �throughout I
Diamond Bar, striving to ensure that residents are within a 3/4-
mile radius of a neighborhood park or community park .
PF - P - 11 Where a �propriate , �promote the joint development , use , and �
maintenance of parks and open space facilities with adjacent
jurisdictions , the County of Los Angeles , and the State of
California .
PF - P - 13 When planninq and desiqnin � � � � ���F�l$�public facilities I
and park1 take into
consideration accessibility , flexible use , adaptability , energy
and water efficiency , ease of maintenance , and sustainable
design elements that take advantage of the natural processes
of healthy ecosystems , while preserving historic and cultural
resources and sensitive habitats .
pF _ p _ � � � o ,-r � � � Yo + �, � + Address the recreational needs of all children and �
adults , including persons with disabilities , seniors , and
Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVICES 1
PUBLIC FACILITIES & SERVICES
� dependent adults , � �' r� °��a—in recreational facility
planning efforts .
Trails
IPF - P - 18 Where feasible , �link parks , open spaces , and regional hiking
trails with a trail network . Incorporate existing trails and bicycle �
and pedestrian infrastructure , working with willing landowners
to prioritize land acquisition where necessary . Where possible ,
incorporate landscaping and enhance natural features .
� PF - P - 19 Consider �eu� datinq the Parks and Recreation Master
Plan to include standards for planning , design , management ,
and maintenance of trails and pathways within parks ,
preserves , open spaces , and rightsof- way . Encourage the
installation of amenities such as rest areas , benches , water
facilities , hitching posts and wayfinding signs serving trails and
scenic routes that adhere to a standard signage palette .
� PF - P - 20 Strive to �4maintain the Parks and Recreation Master Plan goal
of at least one mile of recreational trails for each 10 , 000
persons .
� PF - P - 22 Consider opportunities to �partner with non - profit
organizations to assist in developing and managing the trails
system and providing community outreach and education .
PF - P - 23
r� Ipran������ ri�Er��c� i � ii � � i rr� �-1 rti � � �$ c� ���t� e roryi � r� rvl + rr-vil
" , �� ( Duplicative of PF - P - 19 . )
Schools and Community Facilities
Policies
Schools
PF - P - 26 Su �port and cooperate �er� with Los Angeles County ' s efforts
to ensure the adequate provision of library services .
Community Facilites
� PF - P - 28 As resources become available , €explore and pursue the
feasibility of developing dedicated community centers and
programming in Diamond Bar for teens , youth , and seniors .
Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVICES 2
PUBLIC FACILITIES & SERVICES
Utilities
Policies
Facilities
PF - P - 31 Require when appropriate , the construction of water, sewer,
I �
drainage , and other necessary public facilities , and encourage
storm water capture prior to or concurrent with new development .
PF - P - 32 Require , when appropriate , project sponsors to provide all necessary �
infrastructure improvements , including the pro rata share of system -
wide improvements .
PF - P - 33 Maintain a development fee structure that ensures , when I
appropriate , that costs for new capital facilities and expansion of
existing facilities necessitated by the approval of new development
or intensification of existing development are funded by the
proponents or beneficiaries of projects , in proportion to the demand
created by the development .
Water and Wastewater
PF - P - 36 �e�I�w+t�Support the Walnut Valley Water District ( WVWD ) in efforts
to assess the condition of water distribution and storage systems
within Diamond Bar and plan for refurbishments as needed .
PF - P - 37 Support and take part in the WVWD ' s efforts to �
develop future plans to expand the use of recycled water within
Diamond Bar as additional recycled water supplies become
available .
PF - P - 38 As opportunities arise , �work with the Los Angeles County Public �
Works Department ( LACPWD ) and Los Angeles County Sanitation
District ( LACSD ) to ensure that wastewater treatment conveyance
systems and treatment facility capacity is available to serve planned
development within Diamond Bar.
PF - P - 41 As resources become available , seek cooperation �e� with the �
LACFCD to complete a drainage master plan for Diamond Bar with
a view to identifying any deficiencies within the city ' s drainage
infrastructure system , and update it periodically , as needed .
Communications
PF - P - 42 When resources are available , consider �developing a plan for the �
improvement and expansion of the communications infrastructure
network to address existing infrastructure needs and development
Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVICES 3
PUBLIC FACILITIES & SERVICES
opportunities , and provide cost effective and efficient solutions ,
including exploring the possibility of using City property and rights- of-
way for communication infrastructure sites .
� PF - P - 43 � Encouraae the deqloyment of broadband to as many areas
in the community and key transportation corridors as possible and
� pursue additional providers to increase competition and improve �
quality of service .
Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVICES 4
.
PUBLIC SAFETY
Revised Goals and Policies
October 8 , 2019
i Seismic and Geologic Hazards E
POLICIES
PS - P - 1 Require new emergency facilities subject to City land use
regulations and permittina requirements , including , but not
limited to , f� r,� � + � + � ^ n � paramedic services , � ^ � � � � � + � + � „ n � ,
rrr�.��rr�'rrs
hospitals , ambulance services , and emergency operations
centers be designed to withstand and remain in operation
following the maximum credible earthquake event .
PS - P - 4 Carry out a review of City- owned critical facilities that may be �
vulnerable to major earthquakes and landslides and develop
programs to upgrade them .
PS - P - 6 Prevent and control soil erosion and corresponding landslide
risks on public property and in coniunction with new private
development through hillside protection and management .
Flood Hazards and Protection
Policies
PF - P - 7 Work with the Federal Emergency Management Agency
( FEMA ) as needed to ensure that the City' s floodplain �
information is up to date with the latest available hydrologic
and hydraulic engineering data .
PS - P - 13 As resources become available , �reduce the flooding impact �
of a storm event by enhancing the city ' s green infrastructure
system to complement the gray infrastructure system where
feasible .
Fire Hazards
POLICIES
PS - P - 15 Ensure�$ adherence to a� plicables-i Fire and
Building Codes , including standards for minimum road widths ,
Eu�--a��e�#2_ access and clearance for emergency
Diamond Bar General Plan 2040 � PUBLIC SAFETY 1
PUBLIC SAFETY '
I vehiclesL and the identification of all roads , streets , and major
public buildings a-in a manner that is clearly visible to fire
protection and other emergency vehicles .
Hazardous Materials and Operations
� �
GOALS
� PS - G - 4 Su �port the €enforcement of applicable local , County , State ,
and federal regulations pertaining to the manufacture , use ,
transportation , storage and disposal of hazardous materials
and wastes in the City with the primary focus on preventing
injury, loss of life , and damage to property resulting from the
potential detrimental effects ( short- and long -term ) associated
with the release of such substances .
POLICIES
IPS - P - 26 Prohibit lor oppose when outside of the City ' s jurisdictionl the
development of projects that would reasonably be
anticipated to emit hazardous air emissions or handle
extremely hazardous substances within a quarter- mile of a
school .
Emergency and Disaster Management
Pollcies
PS - P - 38 Maintain , review, and update Diamond Bar' s Local Hazard
� Mitigation Plan as needed to take � � r" f ; , , o „ o ,� r��� ;�- into
account new hazard conditions in the Planning Area and new
emergency management techniques .
Noise
POLICIES
� PF - P - 49 ��eEnsure that detailed site -specific noise analysis ,
including the identification of noise mitigation measures , be
prepared for all development proposals located where
project noise exposure would be other than normally or
conditionally acceptable as specified in Table 7- l . With
mitigation , development should meet the allowable exterior
and interior noise exposure standards established in the Noise
Control Ordinance .
Diamond Bar General Plan 2040 � PUBLIC SAFETY 2
� � � •
COMMUNITY HEALTH & SUSTAINABILITY
Revised Goals and Policies
October 8 , 2019
! Active Lifestyle
POLICIES
CHS - P - 2 As resources become available and a �propriated through the
municipal budget process , �improve signs directing residents
and visitors to public parks and recreational facilities from all
parts of the community . Integrate parks and recreation
signage with bikeway and pedestrian - oriented signage
systems throughout Diamond Bar.
CHS - P - 5 As opportunities and resource become available , �implement �
street design features that facilitate walking and biking in both
new and established areas . Require a minimum standard of
these features for all new developments where a �propriate
and feasible .
CHS - P - 6 Su �port efforts to �improve the conditions for youth walking
and bicycling in the areas surrounding schools�e�IH�k�
+rr�'i �����. + � r� + ho Crvfo 17 � i i + c� c + �V . � c�c��
�,r-1 r� ri ^,�,���on � ifioi-1 Crvfo D � i i + oc + � C � h � � l irifrrvc + ri i � + i iro
.� �.. � � .,
' r� � � e��—r�i-�r�� Ip �� r� � �i-fv�� r� cr� r-� r+ rv + i � r� imr� rr� . i �� �
�§ •
Social Connection
Policies
C H - P - 11 �� k�-c��� �a,� o /� h ! Y Yl /Y � �;�—t-ka� r „ �,�T�v �;�F--�ta�
r� ormi + + inry rr„ �. o � � + „ oEncourage and facilitate incorporation
of universal lifecycle design principles ( design that promotes
the ability to remain in one ' s house as one ages ) in new
residential development , allowing community members to
stay in their homes and neighborhoods longer .
CHS - P - 14 Encourage the develo � ment of��e� � �
" destinations " —such as the clusters of commercial uses that
draw residents from the entire community into the
Neighborhood Mixed Use , the Transit-Oriented Mixed Use , and
the Town Center focus areas .
Diamond Bar General Plan 2040 � COMMUNITY HEALTH & SUSTAINABILITY 1
COMMUNITY HEALTH & SUSTAINABILITY = '
� CHS - P - 15 Encouraqe the establishment of
gathering areas in new neighborhoods .
Healthy Food
a Policies -
ICHS - P - 22 Consider opportunities �e��� a�-to partner with regional
Community Supported Agriculture ( CSA ) as an alternative
source of fresh and healthy fruits and vegetables for Diamond
Bar residents , particularly those with limited mobility or income ,
or those farthest from existing grocery stores .
� CHS - P - 23 Support home gardening efforts by ��considerina a
Home Gardening and Urban Agriculture Ordinance or
otherwise ensuring that zoning does not prevent or restrict the
use of residential properties as vegetable gardens—�
r� rr� � iir-lo rocirlor� } c � � �� + h + or- h �-, � � rl rccicfrvri � o r-� r� r� r� r� i ir� i + ioc i�e
f r�ry�r�rr—e f 8 �T� � �� t��r��—��cr�5 a Y'rr����vpT��
��� r� i r� r ������ arl � c8 B {rc�Fl �-��c�t kl ���1=1 ��1R�1��---f Yirc�r
T�"�•
CHS - P - 25 Explore opportunities as thev arise to incorporate community
gardens into City parks and open space areas , and
encourage the Diamond Bar Community Garden and other
organizations to facilitate the development , administration ,
and operation of additional community gardens in the City .
Public Health and Environmental Justice
Goals
� CHS - G - 10 As opportunities avail themselves , �involve environmental
groups , the business community , and the general public in the
formulation and implementation of programs that enhance
public health in the City and the region .
Policies
ICHS - P - 25 Cooperate �' ^ " � � ^ r� + � with the Los Angeles County
Department of Public Health and other agencies to monitor
and maintain data related to Diamond Bar health outcomes
and risk factors , and use this data to consider development or
expansion of County and City programs to best serve and
protect the Diamond Bar community .
CHS - P - 26 At such time that City staffing resources are available ,
�4monitor and maintain data from CaIEPA related to pollution
Diamond Bar General Plan 2040 � COMMUNITY HEALTH & SUSTAINABILITY 2
COMMUNITY HEALTH & SUSTAINABILITY = '
burdens and socioeconomic vulnerabilities in Diamond Bar,
and use the data to consider development or expansion of
programs and investments to reduce the risks of
disadvantaged communities .
� CHS - P - 27 Recognizing the adverse health impacts associated with
compromised air quality , ensure the protection of sensitive �
receptors from exposure to hazardous concentrations of air
pollutants when reviewinq development proposals .
CHS - P - 28 To the extent feasible , �4manage , enhance , and improve the
City' s tree canopy as a valuable ecological and public health
resource , particularly adjacent to and within sensitive use
areas located in the Air Quality Management District ( AQMD )
500-foot air quality buffer .
CG - P - 29 �elncorporate noise mitigation measures , which could �
include buffers , noise barriers , or natural open space , and
vegetation , between new sensitive uses such as residential
units and schools , and major noise polluters such as SR -57 and
SR - 60 , the Metrolink Riverside rail line , and heavy industry .
Climate Change and Greenhouse Gases
Goals
CHS - G - 11 �ceConsider initiatives to enhance sustainability by �
reducing the community ' s greenhouse gas ( GHG ) emissions ,
protecting natural open spaces which provide CO2
sequestration , and fostering green development patterns ,
buildings , sites , and landscapes .
Policies
Greenhouse Gas Emissions
CHS - P - 33 � Encouraae land uses to reduce vehicle miles traveled �
( VMT ) , prioritizing infill development and incorporating vertical
and horizontal mixed -use development , public transit , and
active transportation facilities where appropriate , recognizing
that the transportation sector is the largest source of GHG
emissions in Diamond Bar and in California more broadly .
CHS - P - 34 Demonstrate City leadership in GHG emission reduction
activities by considerinq incentives forg � � � �,-��r �� ��4 �
proposals that reduce or minimize GHG production , or provide
incentives for selecting climate friendly , or lower and / or non -
emission producing alternatives .
Diamond Bar General Plan 2040 � COMMUNITY HEALTH & SUSTAINABILITY 3
COMMUNITY HEALTH & SUSTAINABILITY
Energy Efficiency and Conservation
I CHS - P - 35 Use the City' s CAP as the platform when considerinq #-� �
�� � + e � n � n �, � r .� ; mr � omo��measures to improve energy
conservation and increase renewable energy use in existing
and new development .
� E
� CHS - P - 36 Support and cooperate �' ^ " � � ^ Y� + � with local , regional , State ,
and federal agencies on the monitoring and evaluation of
energy resources as well as the identification of energy-
efficient and alternative energy technologies and practices .
� CHS - P - 37 As o �portunities arise , �work with appropriate federal , State ,
and private utility agencies to identify and facilitate utility rate
revisions that would provide incentives for the conservation of
energy .
� CHS - P - 38 >� �- � �� ' ���Consider the adoption of rooftop and parking lot
solar power and / or other alternative energy usage on
developed sites in Diamond Bar through actions such as :
a . Establishing incremental growth goals for solar
power/ alternative energy systems in Diamond Bar;
b . Developing guidelines , recommendations , and examples
for cost- effective solar and / or other alternative energy-
based installation ; and
c . Installing solar/ alternative energy technology on
�+I� bJ�existin City facilities�e-s .
CHS - P - 39 Support�-e�l�it� Southern California Edison �' ^� �,�, �� ( SCE )
and Southern California Gas Company ' s ( SoCalGas ) efforts to
increase public awareness of energy conservation technology
and best practices .
� CHS - P - 45 Support and cooperate with the Walnut Valley
Water District , the Los Angeles County Public Works
Department , and the Los Angeles County Sanitation District in
community education efforts to reduce the consumption of
carbon - based fuels for conveyance and treatment of water
and wastewater .
Waste Reduction and Recycling
I CHS - P - 52 Su �port and cooperate with County and State reaufatory
aaency efforts to �require commercial and industrial
generators to develop and implement a source reduction and
recycling plan tailored to their individual waste streams .
Diamond Bar General Plan 2040 � COMMUNITY HEALTH & SUSTAINABILITY 4
COMMUNITY HEALTH & SUSTAINABILITY
Climate Change Resiliency
CHS - P - 53 Encouraqe the protection �e#��# and enhancement of areas �
identified as healthy functioning ecosystems that provide the
ecological , cultural , public health and safety , and economic
� value of ecosystem services , or benefits . E
CHS - P - 59 As resources become available , �increase the efficiency of �
water usage in public places , such as irrigation in public parks ,
and utilize drought-tolerant landscaping in City parks and
streetscapes .
Diamond Bar General Plan 2040 � COMMUNITY HEALTH & SUSTAINABILITY 5
� �
� '
, 3
II
�
I
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i �
� �
�� _
4 e
ATTACHMENT 2
� oCalGas Comments on the
Draft Climate Action Plan
i E
� �
t� y
r
k
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SoCalGas RobertCruz
Public Affairs Manager
196 E . 3`d St .
� Pomona, CA 91766-1806
a � Sempra Energy Ucii �cy
� Email : rcruzl@socal�as.com
� �
Grace Lee
Senior Planner
City of Diamond Bar
21810 Copley Drive
Diamond Bar, CA 91765
RE : City of Diamond Bar — Draft General Plan Update and Climate Action Plan
Dear Ms . Lee ,
Southern California Gas Company ( SoCalGas ) is one of California ' s investor-owned utilities
regulated by the California Public Utilities Commission . We are the nation ' s largest natural gas
distribution utility, providing energy to 20 . 9 million consumers throughout 500 communities .
SoCalGas' service territory encompasses approximately 20, 000 square miles in diverse terrain
throughout Central and Southern California .
SoCalGas appreciates the opportunity to submit comments on the Draft Climate Action Plan
( CAP ) and Draft General Plan Update ( GPU ) and strongly supports the City' s draft targets and
goals for reducing citywide emissions — primarily from buildings, transportation , and waste — in
compliance with State targets . However, SoCalGas is concerned that the Draft CAP does not
include consideration of natural synergies that exist between the natural gas system and City
goals for achieving emission reductions and local resiliency priorities, as identified both in the
Draft GPU and the Draft CAP . These primarily include the synergies between use of renewable
natural gas ( RNG ) , and emission reductions from transportation and buildings, increased landfill
waste diversion and organics recycling, and enhancing local climate adaptation resiliency .
Therefore, as stated in our comments below, believe the Draft CAP could benefit from active
identification and incorporation of the following takeaways :
• The Draft CAP can be greatly enhanced by pursuing synergies between City waste
diversion goals and production and use of renewable natural gas
• Option E , " Promote Switching from Natural Gas to Clean Electricity, " mischaracterizes
the alleged benefits from encouraging replacement of natural gas technologies with
electric substitutes . As residential natural gas use represents only 5 % of total City
emissions, and electric emissions make up a substantially larger percentage — the City' s
electricity is not 100% renewable , and therefore is not " clean " — switching from natural
gas technologies to electric may not actually reduce residential emissions .
• The renewable natural gas system is inherently resilient to climate change impacts
compared to the electric system and should be leveraged accordingly to increase local
energy system resiliency and reliability .
Renewable Natural Gas
The current Draft CAP states that natural gas comprises just 9 % of citywide GHG emissions .
However, Option E : Promote Switching from Natural Gas to Clean Electricity is provided as
recommended strategy to reduce citywide greenhouse gas ( GHG ) emissions, and states that
� replacing " inefficient and expensive natural gas water heaters with more efficient solar water
heating systems" will reduce the energy demand for residential heating . This statement greatly
mischaracterizes both the efficiency of natural gas water heaters and the alleged benefits of
solar water heaters . Regarding efficiency, solar water heaters can achieve approximately 60%-
70 % efficiency1 while natural gas heaters achieve 80 % efficiency and abovez, and at a cheaper
cost than a solar water heating system3 �4 . Further, there are obvious usage disadvantages to the
customer from solar water heating systems . Systems need to be of substantial size to hold
and /or store enough hot water for residential usage , much larger than natural gas water
heaters, and they only work during the day with direct overhead sunlight . That is, these systems
are not able to provide hot water either in the morning or at night, and don ' t work on foggy,
cloudy, or rainy dayss . Therefore, as solar water heating systems are not only less efficient but
also more costly and provide inconsistent hot water use , the discussion within Option E does
not provide accurate information . Further, Option E states that only a 5 % reduction in
emissions would be achieved from its implementation ( which may be overestimated given the
above discussion ) . For these reasons , Option E seems to provide an expensive emission
reduction strategy that is not cost- effective and would achieve only nominal emissions
reductions at the expense of increased customer cost — SoCalGas recommends this option be
removed from the Draft CAP .
In comparison , including an option that supports building transition to use of renewable
natural gas ( RNG ) instead of traditional fossil natural gas, has significant carbon emission
reductions and can even be carbon negative in application , which would contribute
considerably greater and more effectively to the City' s goal to decarbonize buildings . RNG , or
biomethane , can be produced from existin � waste sources including agricultural waste , waste
water, and landfills, and then upgraded to delivery quality in our pipelines . Because this energy
is produced from existing methane sources that are otherwise being emitted into the air,
unabated , capturing these emissions to produce biomethane helps reduce both regional and
local methane and GHG emissions . As a short - lived climate pollutant, methane has a greater
global warming potential than carbon dioxide — specifically, methane is approximately 28 times
more potent than carbon dioxide in the atmosphere6- ' . Therefore , from a lifecycle perspective,
1Palmer, Brian . "The Best Investment Under the Sun . " February 2011 .
https : //slate . com/technolo �v/2011/02 /solar -water - heaters - are -thev- better-than -solar-electric- panels . html
2 Rinnai . Find YourTankless Water Heater. https : //www . rinnai . us/tankless -water- heater
3 Home Depot . " How Much Does It Cost to Install a Water
Heater ? . " https : //www . homedepot . com /c/cost install water heater
4 Home Advisor . " How Much Does it Cost to Install a 5olar Water Heater ? ."
https : //www . homeadvisor . com / cost/ plumbing/ instal I - a -solar-water - heater/
S Palmer, Brian . "The Best Investment Under the Sun . " February 2011 .
https : //slate . com /technolo�y/ 2011/02 / solar - water - heaters - are -thev - better-than - solar- electric- panels . html
6 IPCC . Global Warming Potential Values . https : //www . ghgprotocol . org/sites/default/files/ghgp/Global -Warming-
Potentia l -Val u es %20% 28Feb %2016%202016 % 29_1 . pdf
' California Air Resources Board ( CARB ) . Understanding Global Warming Potentials .
https ://www . epa . gov/ghgemissions/understanding-global -warming-potentials
because biomethane production removes a greater quantity of more potent GHG emissions
from the air than what it produces at end uses , its production is a carbon negative process , and
can be used to offset other uses that cannot achieve carbon neutrality . As the City is aware ,
SoCalGas recently filed a request with the California Public Utilities Commission seeking to offer
RNG to all customers , which would have significant potential to significantly reduce both local
and regional GHG emissions . In fact, replacing only 20% of existing natural gas supply with RNG
achieves the same emissions reductions as electrifying the entire building sector by 2030, but at �
one -third of the cost . For these reasons, RNG should be included in the draft CAP as a viable
fuel - switching option for the City' s building decarbonization strategy to achieve significant
near-term emission reduction benefits for the building sector . This would align with policies
CHS - P - 36 and CHS - P -41 in the Draft GPU which support identification of efficient alternative
energy technologies and practices and support use of clean fuels .
Organic Waste Mana �ement
In addition to GHG reduction benefits, production and use of RNG has inherent synergies with
solid waste diversion , particularly organic waste . AB 1383 requires a statewide increase in
organics waste diversion of 50% by 2020, and 75 % by 2025 . Because biomethane can be
produced from existing waste streams, its use as a resource can contribute to city waste
diversion and reduction goals in addition to emission reduction goals . Several cities have
already incorporated such efforts as part of their waste management strategy . For example,
waste collector CR & R recently built a waste processing facility in Perris, CA that uses an
anaerobic digester to collect methane emissions from waste and uses it as renewable natural
gas to fuel their truck fleet . In addition , the Point Loma Wastewater Treatment Plant in San
Diego collects methane gas from its wastewater digester and feeds it into the natural gas
pipeline system . UC San Diego uses this biomethane to power their campus fuel cell and uses
byproduct heat from the fuel cell as a continuous power source for chilling capacity to cool
campus buildings . Both examples demonstrate how supporting use of biomethane as a
renewable energy resource would help support the City' s Draft CAP and GPU policy priorities
promoting waste reduction and diversion as well as emission reductions . This includes Option G
in the Draft Cap , " Establish a Zero -Waste Framework, " which supports citywide adoption of a
zero waste ordinance . However, neither the Draft CAP nor the GPU include mention of policies
specifically addressing organic waste reduction . Therefore , SoCalGas recommends that the City
include organic waste reduction policies that leverage use of diverted waste for local energy
production . These would support the other policies regarding waste reduction and recycling
included in the Community Health and Sustainability Element of the Draft GPU .
Climate Adaptation/ Resilience Strate� ies
In the Climate Change Resiliency policy section of the General Plan Update, Goal CHS - G - 15
states that the City seeks to " increase the community' s resiliency and capacity to resist and
recover from social , economic , and environmental disruption from climate change impacts . "
Although SoCalGas supports the policies that advocate for increased resiliency measures, such
as CHS - P - 54 which supports incorporating updated information about future climate change
hazards into City hazard mitigation and emergency planning processes, the Draft GPU and Draft
CAP currently do not contain policies that address energy system resiliency or any potential
consequences from impacts to the energy system from climate change . To help address this
concern , SoCalGas would like to emphasize that energy diversification is necessary as a climate
change adaptation strategy . The UN Framework Convention on Climate Change clearly states
that expanding the energy portfolio increases system reliability in a cost- effective manner, and
over- reliance on a single energy source can create avoidable and unnecessary risks for public
safety and the economy . Rather, maintaining diverse energy sources across the economy is a
prudent measure to ensure resiliency .
As seen in the recent wildfires and mudslides, as the electric system is almost entirely
aboveground , it is significantly more exposed to climate threats and , when impacted , can not
only leave hundreds to thousands of residents without power at their homes , but also affect
operation of critical facilities . For example , in 2017 the Thomas Fire damaged electric power
lines throughout the City of Ventura . Because the City' s water pumps to supply water to
firefighters ran on electricity without any other form of backup power, firefighters were unable
to get water from the pumps to put out burning residences . $ If the water pumps had been
connected to a backup power system , such as a natural gas generator, firefighters would have
been able to access the water .
This is not an isolated anomalism . As we know, the impacts of global climate change are set to
continually increase in severity, which will result in more severe wildfires, storms , and floods .
Given the vulnerability of the electric system to such impacts , as seen not only in California but
across the countryg, it seems counterintuitive to support policies that advocate relying solely on
one source of power . When the state experiences another devastating fire, the electric lines
will be heavily damaged , preemptively shut off, or both , which will cut power to thousands of
residents and could very likely take weeks to restore . In such situations, residents will be left
quite literally in the dark, with no way to heat or cool their homes, cook, or shower . Heat
sensitive uses will also be without power, including hospitals, cooling centers, and senior
centers/ homes . Batteries may be able to provide temporary power but will not be able to
sustain these uses for weeks on end . Further, solar panels will not be able to provide charge to
the batteries during storm conditions ( where there is cloud cover ) , or wildfires ( due to smoke
obstruction ) . These uses will experience increased suffering during such climate events when
served by only a single energy source .
In contrast, as the natural gas system is mostly underground , it is very resilient to extreme
weather events . For example , in 2012 , after Superstorm Sandy, the entire natural gas system in
the Northeast was essentially intact, allowing residents to support back- up generators, cook,
and keep warm . Businesses with natural gas - powered fuel cells were able to operate and
compressed natural gas ( CNG ) buses in New Jersey were used to shuttle residents to safety10
Further, when Hurricane Harvey temporarily disabled almost 30 % of the nation ' s refining
capacity, CNG shuttles were able to continue operating, and hospitals that had on - site
combined heat and power systems were able to provide urgently needed medical attention ,
despite flooding . These examples demonstrate the critical role natural gas infrastructure can
play in supporting local and regional energy supply resilience in the face of extreme climate
$ ICF . Case Studies of Natural Gas Sector Resilience Following Four Climate - Related Disasters in 2017 .
https : //www . socalgas . com / 1443742022576 /SoCalGas - Case - Studies . pdf
9 Ibid
lo https ://www . energy . gov/eere/articles/5 -ways -alternative-fuels -aid - response - hurricanes -and - natural -
disasters ?utm_source = EERE+Weekly+ Digest+of+ Clean + Energy+ News & utm_campaign =f048cbec65 -
EMAIL CAMPAIGN 2017 09 25 & utm medium = email & utm term =0 96dffafa2f-f048cbec65 -34678197
events . With these case studies, SoCalGas wants to emphasize the importance of energy supply
diversification , and specifically distributed generation resources such as combined heat and
power, which offer a clean , flexible , and reliable form of energy .
Conclusion
� Looking forward , natural gas and renewable natural gas will continue to play an important role
� in electric generation , not just for baseload central power plants , but also for flexible and
appropriately scaled natural gas peaking technologies that balance the intermittency of
renewables, help integrate them into the grid , grow the state ' s renewable generation portfolio
over the long term , and help achieve State GHG emission and methane reduction goals as well
as climate resiliency goals . Decarbonizing our natural gas delivery systems keeps intact the
inherent energy efficiencies of direct uses of natural gas, at lower carbon - content, without
creating the dramatic increase in electric demand and cost which makes decarbonizing electric
generation a challenge . Further, it capitalizes on the inherent resiliency benefits of a grounded
energy supply and avoids the increased risk from having an aboveground , vulnerable all - electric
energy supply .
The benefits of maintaining a balanced energy system have already been recognized by the
City, especially with City Council' s adoption of a Balanced Energy Resolution in April 2019
with particular support from Mayor Pro Tempore Tye and Councilmember Lyons . With this,
we believe strong alignment between City Council objectives and city planning policies
regarding balanced energy resources will create significant long-term environmental benefits
through emissions reductions and energy system resiliency.
SoCalGas appreciates your consideration of these comments and your willingness to meet with
us to further discuss the issues raised in this letter . If you have any questions, please do not
hesitate to contact me by telephone or email . Thank you !
Sincerely,
,�6�-��
Robert Cruz
Southern California Gas Company
Response to Issues Raised by City Council Members at the September 25th, 2019 Study
Session.
September 30, 2019
a
We appreciate concems voiced by some council members about a desire for additional
"flexibilit�' in the draft general plan language. This is not a new concem. GPAC members
voiced similar concerns at the GPAC meetings last yeas.
Responsible Land Use investigated the subject of appropriate general policy language and shared
what we learned with GPAC members. The draft general plan document presented to council
members accurately reflects the results of that research.
The following quote sums up our findings :
In reviewing or drafting General Plan policies it is important to consider the difference
between mandatory requirements and encouraged direction. Strong policies with explicit
direction use words like " shall" and "require, " while other policies with more flexibility
use words like "should, " "encourage, " and "may. " Using the flexible policy language
implies interest in the policy, but no real commitment to it or its enforcement. Flexible
policy langua.ge does not carry the force of law. According to the General Plan Guidelines
developed by the comprehensive sta.te planning agency, the Office of Planning and
Research (OPR), "It is better to adopt no policy than to adopt a policy with no
backbone. " 1 In addition, for a policy to be counted towards "mitigating of a plan's
impacts, " it must be escpressed as mandatory.2
Words like, promote, support, encourage, discourage, foster are asp S1Ve• which, while
appropriate in many cases, are suggestions about desired direction only.
Likewise, adding the words iffeasible to a policy gives the illusion of specific direction. But, in
fact, no direction is given because what is feasible to one party is often infeasible to another. As
a result, adding these words to a policy typically renders it legally unenforceable in practice.
Words like require, on the other hand a.re active . Objective . There is no legal confusion about
require. Any restriction or action following it must be followed.
There was also a question during the August 16, 2018, GPAC meeting about the difference between
the words ensure and require. The meanings of these two words are indeed similar. However, ensure
is more assive suggesting the burden of action is not necessarily clear, and is therefore weaker.
Require creates a faz stronger imperative for direct enforcement than ensure.
Bottom line to all of this is that the specific choice of language, seen in the draft genera.l plan, has
been carefully crafted by both citizens , through the GPAC, and city staff to reflect the specific
outcomes desired in order to implement the city' s twenty year general plan vision.
We understand the concem that having specific language, as found in the dra.ft General Plan,
might create a degree of legal exposure from "activist environmental groups ." And we
� understand that the request to add the words "if feasible" to all policies conta.ining the word �
"require" is an attempt to mitigate that potential exposure .
However, as the city attomey mentioned at the last study session, law suits over specific language
of adopted general plans are rare. Law suits from "activist environmental groups" generally
involve issues with the EIR.
We believe his is a realistic view. We believe this for several reasons. One, the specific wording
of policy language found in Diamond Bar' s draft general plan is very similar to that found in
genera.l plans of other ciries . (See examples shown below.)
Secondly, we believe that actually adding the words "if feasible" to a11 policies containing the
word require would cause a much greater legal exposure for the city because of uncertainty and
lack of direction.
With vague, undefined, "flexible" language, the planning commission or a court of law will be
unable to determine the proper intention of policies being debated
The resulting uncertainty of "flelcible," undefined language deprives the planning commission of
the specific tools necessary to guide development into a form consistent with Diamond Bar' s
twenty year vision. It would also add costs for developers attempting to figure out what
specifically Diamond Bar would, or would not, accept as a planning proposal, and could easily
and lead to unnecessary litigation on future development projects .
Lastly, there is yet a.nother aspect to changing draft general plan language without very careful
consideration. In addition to the unintended consequences noted above, general plan language is
closely tied to and works in conjunction with the EIR. Changing language in one document
necessitates cazeful study to be sure that changes in the other are not required.
For example, altering and weakening the policy language undermines the mitigations proposed
for significant impacts. Without clear guidelines for mitigation, the environmental impacts will
not be fully addressed, so the city will be vulnerable to litigation under CEQA.
Respectfully submitted for the public record.
Responsible Land Use
R. Lee Paulson
President
Response to Issues Raised by City Council Members on September 25 , 2019 Page 2
Notes
1 . Califomia' s Office of Planning and Research. " General Plan Guidelines" 381 .
http : //opr. ca.gov/planning/general-plan/
2 . "The General Plan Resource Directory: Creating Sustainable Communities in Orange
� County" 9 . �
https ://www. fhbp.org/resources/studies-reports/general-plan-resource-directory/ �
Additional Resources
Below please find a representa.tive sample of Policy and Actions from the Chino Hills general
plan containing the word "require." These Actions and Policies are presented as an example to
show that the types of language found in Diamond Bar' s draft general plan are comparable to
those found in the general plans of other cities as well.
After that, please also find the following excerpts from the two documents referenced above
which further discuss appropriate general plan language . General Plan Guidelines is considered
the definitive bible for general plan creation in the state of California. While The General Plan
Resource Directory was created by a grant to create additional guidance for general plan creation
in Orange County, we found that it held wisdom for those of us Diamond Bar as well :
1 . Excerpts from General Plan Guidelines , Appendix E
2 . Excerpts from The General Plan Resource Directory, Chapters 9 and 10.
Sample Policies and Actions from Chino Hills ' General Plan Using the Word "Require"
Action LU- 1 . 1 .4 : Continue to require ridgelines and natural slopes to be dedicated and
maintained as open space as required by the Municipal Code.
Action LU- 1 . 1 . 13 : In areas adjacent to Chino Hills State Park, require substantial open space
buffers between the proposed development and the Park.
Action LU- 1 . 2 . 2 : Require buildings to be designed and to utilize materials and colors to blend
with the natural terrain in hillside areas and adjacent to public open spaces, extremely prominent
ridgelines, prominent ridgelines, lrnolls, or important visual resources as identified in the
Municipal Code .
Action LU-2 . 3 . 3 : Require all utilities to be designed and installed in a manner that minimizes
visual and environmental impacts.
Action LU-4. 1 . 6 : Implement policies that require residential development to be designed at a
scale that is in harmony with sunounding uses and the environment.
Response to Issues Raised by City Council Members on September 25 , 2019 Page 3
Action C- 1 . 1 .4 : Require new developments to provide for a11 roads within their boundaries and
to pay their fair share of planned roadway improvement costs .
Action C- 1 . 2 . 11 : Require adequate off-street parking for all developments .
� Action C-3 . 1 . 3 : Require bus tum-outs in residential, commercial, a.nd industrial public use areas.
A �
Action C-4. 1 .2 : Require mixed use and/or high density development to incorporate
pedestrian-oriented design elements, such as accessibility to transit; safe pedestrian connections
and crossings ; pazks and public open spaces; street furniture, attractive pedestrian-oriented
design at the street level; street facing buildings; and street trees and landscaping.
Action C-5 . 1 .2 : Require private and public development projects to be responsible for providing
road improvements along all frontages abutting a public street right of way in accordance with
the design specifications for that roadway.
Action C-5 . 1 .3 : Require private and public development projects to be responsible for providing
traffic control devices and wet and dry utility improvements necessary to meet the needs of the
project, and to properly integrate into the established and planned infrastructure systems .
Policy H- 1 . 3 : Require compatible design to minimize the impact of new residential development
on existing residences .
Policy H- 1 . 3 : Require compatible design to minimize the impact of new residential development
on existing residences .
Policy H-2 .4 : Establish programs to reduce development fee obligations for new residential
construction and rehabilita.tion in the CiTy's target neighborhoods .
Policy H-4. 3 : Coordinate with County and other regional homeless service providers to support
surveys of homeless populations and homeless services .
Policy H-4.4 : Address the long- and short-term needs of identified special housing needs groups
through coordination with public and non-profit groups that provide emergency shelter and
transitional housing support for City residents .
Policy H-5 . 2 : Increase community education and awareness of the scope and benefits of
affordable housing to the economic vitality of the City.
Action N-2. 1 . 3 : Require a noise study to be performed and appropriate noise attenuation to be
incorporated to reduce interior noise levels to 45 dB CNEL or less prior to approving any
multifamily or mixed-use residential development in an area with a CNEL of 65 dB or greater.
Response to Issues Raised by City Council Members on September 25 , 2019 Page 4
en � x
� -
�R�.,����r�
Defining the Parts of a General Plan
A general plan is made up of text describing goals and objectives, principles, standards, and plan proposals, as well as a set of
maps and diagrams. Together, these constituent parts paint a picture of the community's future development. The following
discussions help to clarlfy the meanings of these and other important terms.
�i4 �.,�;�6�Ja � �6 � ��,tE� , ��', r
A development policy is a general plan statement that guides action. In a broad sense, development policies include goals and
objectives , principles, policies, standards, and plan proposals.
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A diagram is a graphic expression of a general plan's development policies, particularly its plan proposals. Many types
of development policies lend themselves well to graphic treatment, such as the distribution of land uses, urban design,
infrastructure, and geologtc and other natural hazards.
A diagram must be consistent with the general plan text (Gov. code � 65300. 5) �d should have the same long-term planning
perspective as the rest of the general plan. The Attorney General has observed that " . . .when the Legislature has used the term
`map, ' it has required preciseness, exact location, and detailed boundaries. . . . " as in the case of the Subdivision Map Act. No such
precision is required of a general plan diagram (67 Ca1.Ops.Atty. Gen. 75,77) .
As a general rule, a diagram or diagrams, along with the general plan's text, should be detailed enough so that the users of the
plan, whether staff, elected and appointed officials, or the public , can reach the same general conclusion on the appropriate use
of any parcel of land at a particular phase of a city's or county's physical development. Decision-makers should also be able to
use a general plan, including its diagram or diagrams, in coordinating day-to-day land use and lnfrastructure decisions with
the city's or county's future physical development scheme.
At the same time, given the long-term nature of a general plan, its diagram or diagrams and text should be general enough to allow a
degree of flexlbllity in decislon-making as times change. For example, a general plan may recognize the need for and desIrability of a
community park in a pmposed resldential area, but the preclse location of the park may not be lmown when the plan is adopted. '1'he
plan would not need to pinpoint the locaxion, but it should have a generalized diagram along with policies saying that the park sibe
will be selected and appropriate zoning applied at the time the area is subdivided. In this sense, wlule zoning must be consistent with
the general plan, the plan's diagram or diagrams and the zoning map are not required to be identical.
APPENDIX E : GLOSSARY I 3SO
J6 , ,i �
�` A goal is a general direction-setter. It is an ideal future end related to the public health, safety, or general welfare. A goal is
a general expression of community values and, therefore, may be abstract in nature. Consequently, a goal is generally not
quantifiable or time-dependent.
Although goals are not mentioned in the description of general plan wntents in Government wde section 65302, they are
included here for several reasons. First, defining goals is often the initial step of a comprehensive planning process, with more
specific objectives defined later, as discussed in Cha�ter 3. Second, goals are specifically mentioned in the statutes governing
housing element contents (Gov code § 65583) . '1`hird, while the terms "goal" and "objective" are used interchangeably in
some general plans, many plans differentiate between broad, unquantifiable goals and specific objectives. Either approach is
allowable, as flexibility is a characteristic of the general plan.
Pxamples of goals,
• Quiet residential streets
• A diversified economic base for the city
• An aesthetically pleasing community
• A safe community
Goals should be expressed as ends, not actions. For instance, the first example above expre�sses an end, namely, "quiet residential
streets. " It does not say, "Establish quiet residential streets" or "To establish quiet residential streets. "
(;���i',`;:(�;'�'i ,; -
An objective is a specified end, condition, or state that is an intermediate step toward attaining a goal . It should be achievable
and, when possible, measurable and time-specific. An objective may pertain to one particular aspect of a goal or it may be one of
several successive steps toward goal achievement. Consequently, there may be more than one objective for each goal.
Bxamples of objectives:
� The addition of 100 affordable housing units over tlie next five years
• A 25 percent increase in downtown office space by 2030
• A 50 percent reduction in the rate of farmland conversion over the next ten years
• A reduction in stormwater runoff from streets and parking lots
A principle is an assumption, fundamental rule, or doctrine guiding general plan policies, proposa.ls, standards, and
implementation measures. Principles are based on community values, generally accepted planning doctrine, current technology,
and the general plan's objectives. In practice, principles underlie the process of developing the plan but seldom need to be
explicitly stated in the plan itself.
APPENDIX E : GLOSSARY I 3S�
Bxamples of principles:
� • Mixed use encourages urban vitality
� � The residential neighborhoods within a city should be within a convenient and safe walking distance of an elementary school
• Parks provide recreational and aesthetic benefits
• Risks from natural hazards should be identified and avoided to the extent practicable
� ! �
A policy is a specific statement that guides decision-making. It indicates a commitment of the local legislative body to a
particular course of action. A policy is based on and helps implement a general plan's vision.
A policy is carried out by implementation measures. For a policy to be useful as a guide to action it must be clear and
unambiguous. Adopting broadly drawn and vague policies is poor practice. Clear policies are particularly itnportant when it
comes to judging whether or not zoning decisions, subdivisions, public works projects, etc. , are consistent with the general plan.
When wrlting policies, be aware of the difference between "shall" and "should. " "Shall" indicates an unequivocal directive.
"Should" signifies a less rigid directive, to be honored in the absence of compelling or contravening considerations. Use of the
word "should" to give the impression of more commitment than actually intended is a common but unacceptable practice. It is
better to adopt no policy than to adopt a policy with no backbone.
Solid policy is based on solid infocmation. The analysis of data collected during the planning process provides local officials
with the knowledge about trends, existing conditions, and projections that they need to formulate policy. If projected community
conditions are not in line with a general plan's objectives, local legislative bodies may adopt policies that will help bring about a
more desirable future.
Bxamples of policaes:
• The city shall not approve a parking ordinance variance unless the variance pertains to the rebuilding of an unintentionally
destroyed non-conforming use
• The city shall not approve plans for the downtown shopping center untll an independently conducted market study indicates
that the center would be economically feasible
• 'I'he city shall give favorable consideration to conditional use permit proposals involving adaptive reuse of buildings that are
designated as " architecturally slgnificanY' by the cultural resources element
; ��, :,
A standard is a rule or measure establishing a level of quality or quantity that must be complied with or satisfied. Standards
define the abstract terms of objectives and policies with concrete specifications.
The Government Code makes various references to general plan standards. For example, § 65302 (a) states in part that the
land use element must " . . .include a statement of the standards of population density and building intensity recommended for
APPENDIX E : GLOSSARY I 3B2
the various districts and other territory covered by the plan. " Other examples of statutory references to general plan standards
include those found In § 66477 (the Quimby Act) and § 6647g (reservations of land within subdivisions) . Of course, a local
legislature may adopt any other general plan standards it deems desirable.
�
I�xamples of standards:
• High-densiry residential means 20 to 30 dwelling units per acre and up to 41 dwelling units per acre with a density bonus
• The first floor of a11 new construction shall be at least two feet above the base flood elevation
�^��1 �'�v��+�a�;.�;
A plan proposal describes the development intended to take place in an area. Plan proposals are often expressed on the general
plan diagram.
�xamples of plan p%pasals:
• First Street and Harbor Avenue are designated as arterials
• The proposed downtown shopping center will be located within the area bound by D and G Avenues and Third and Fourth Streets
• A new parking structure shall be located in the vicinities of each of the following downtown intersections: First Street and A
Avenue, and Fifth Street and D Avenue
' I'uil� lll'i� � u�t itii���{� f�i i� i� ,`.�� 'iil6"ts�
An implementation measure is an action, procedure, program, or technique that carries out general plan policy. Each policy
must have at least one corresponding implementation measure .
Bxam�ples of implementat�on measures:
• The city shall adopt a specific plan for the industrial park
• Areas designated by the land use element for agriculture shall be placed in the agricultural zone
�� `��� ����c��� �� ��a�f�e�����a���
The following examples show the relationships among objectives, policies, and implementation measures. The examples are
arranged according to a hierarchy from the general to the specific—from goals to implementation measures. In an actual
general plan, there might be more than one policy under each objective , more than one implementation measure under each
policy, etc.
Goal.•
• A thriving downtown that is the center of the city's retail and service commercial activities.
Objective:
• Development of a new regional shopping center in the downtown.
APPENDIX E : GLOSSARY � 3S3
Policy:
• The city shall not approve discretionary projects or building permits that could impede development of the downtown regional
� shopping center.
Im,plementation measures:
• The clty sha11 adopt an interIm zoning ordlnance restricting further development in the general vicinity of the proposed
downtown shopping center until a study has been completed determining i1s exact configuration.
• DurIng the interlm zoning perlod, the city shall adopt a speclal regional shopping center zoning classificatlon that permits the
development of the proposed downtown mall.
• Upon completion of the study, the city wuncil shall select a site for the downtown mall and shall apply the shopping center
zone to the property.
Goal.•
• Affordable, decent, and sanitary housing for all members of the community.
Objective:
� 500 additional dwelling units for low-income households by 2010.
Policy:
• When a developer of housing within the high-density residential designation agrees to construct at least 30 percent of the total
units of a housing development for low-income households, the city sha11 grant a 40 percent density bonus for the housing
project.
Implementation measure:
• The city sha11 amend its zoning ordinance to allow for a 40 percent density bonus in the high-density residential zone.
APPENDIX E : GLOSSARY I 3S4
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Gr�a� in.� �3��� r �oCia � s
. -
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�'or ��annin� �o �Oe v�n.eanin9�`uL ci�izens w�us� (oe involved in
�he �rocess . �lanners, re� ardless o�' �heir �ersonal fialen�s and
ca�af�ili�ies, workin9 in isola�ion an.d a�ar� �'rov�. � he clien�s o �'
� lannin9, will no� f�e a�Ole �o cra�'� plans covN.w�.u.ni�ies will
ew�l race.
— 'YYl.ichael Ghandler
The 21sfi Gen� ur�u �lan'
�lannin� Gav�.wl.issioners foum. al �ssue �'��.
�
his chapter focuses on transforming vague and On the following pages are some sample policies
hortatory ( advisory) policies into more effective to illustrate application of the "SMART" evaluation .
and enforceable policies. This project identified many They've been separated into three categories ( good,
well meaning Orange County city general plan policies better, best), so the evolution to a strong policy can be
— lacking in specificity, lacking in timing, etc . Strong seen . The policies are presented to illustrate drafting
policies use the verbs "shall" and "require." technique and are not intended as specific policy
recommendations . Specific land use policies must
One way to evaluate objectives is to follow the be tailored to the needs of each community by first
mnemonic : SMART. defining the community's goals and values and then
• �pecific — Does the objective include enough putting those goals and values into words using the
specificity or is too general ? SMART tools.
• m,easurable — Does the objective have
quantifiable metrics ?
• Attainable — Is the objective something that
can be achieved or is it wishful thinking?
• $elevant — Is the objective relevant to city,
time, economy, community, etc. ?
• Iime- bound — Is there a timeframe by which
the objective needs to be realized ?
101
�.dw�inis� rative �olicr�
Good :
Work to transition the city fleet to less polluting cars.
Better :
Transition the city fleet to partial or zero emission vehicles.
Best :
� Transition the entire city fleet to partial or zero emission vehicles by 2015 . -
�' �� ricul�ural Polic�u
Good :
Promote the long-term viability of agricultural lands .
Bette r:
Promote the long-term viability of agricultural lands by allowing conversion of locally important agricultural land
to non-agricultural uses only when there are no feasible agricultural uses.
Best:
Designate locally important agricultural land for agricultural uses and prohibit its conve�sion to non-agricultural
uses unless the property owner provides evidence that continued agricultural use is a taking. Support
agriculture through purchase of conservation easements from willing sellers, and other similar mechanisms.
Adopt an agricultural mitigation ordinance that provides clear guidance for a property owner that provides
evidence that an agricultural use is no longer economically viable and how to mitigate for the loss of any
conversion .
1'Yl.ixed--use ��uelopw�ent �olicy
� ooa :
Encourage the development and integration of residential land uses into commercial and other non- residential
development where appropriate .
Better:
Provide capacity for at least 20% of the City's new housing to be provided in connection with commercial and
other non-residential uses no later than December 31, 2015 by ( i) identifying zoning districts in which such use
will be encouraged and (ii ) setting standards for mixed use development in all zoning districts where it is allowed .
Best:
Ensure that beginning January 1, 2016 at least 20°Yo of the City's new housing is provided in connection with
commercial and other non-residential uses by requiring mixed use development in all mixed use districts and
by limiting building permits for new non-mixed use residential projects to 8040 of the permits granted for new
residential housing each year.
Gliv�.a�e Ghan9e Policr�
Good :
Work to reduce the City's greenhouse gas emissions .
Better :
The City shall reduce greenhouse gas emissions from City sources and other sources within the City consistent
with AB 32 and Executive Order S-3 -05 .
102
� .yj�
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�opT�� 1 �et �� � .y ' ,�G �- �� ' i lj . �'Q`.' , � .. . : � � .
y"` °' � -3 _ " ,�� +�r_ ., r ��'-«'�t ' "!s �'�r� '
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r'y /W � �^'��, �> '��.a�. 8� . . � ���}J�1T,,
_ _ ' . ,��, .� . L,4' . . ¢�{t �ypl � �tl t
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U
Best:
The City shall reduce greenhouse gas emissions from City sources and other sources within the City to 1990
levels by 2020 and establish a policy and land use trajectory to reduce greenhouse gas emissions 809'o below
1990 levels by 2050.
£ner� r� Securifir� �olicy
Good :
Encourage the use of solar energy to supplement conventional heating systems.
Better :
Require the installation of solar energy or equivalent renewable energy systems to supplement conventional
heating systems.
Best:
Require the installation of solar energy to supplement conventional heating systems equivalent to 204� of all new
buildings and residences through both new construction and retrofits each calendar year.
Tn�'i« Z7evelo�vv�.en� �oliGt�
Good :
Encourage infill development near the city's downtown .
Better:
Inventory vacant and underutilized sites near the City's downtown no later than December 31, 2012 and
encourage infill development ofthese sites .
Best :
Promote infill development of vacant and underutilized property near the city's downtown through incentives
including by right development zoning to be adopted by December 31, 2012, streamlined permit assistance for
qualifying projects, reduced fees, on-line site inventory, and the like.
103
�pen Space �olicr�
Good :
Work to protect ridgetops as open space .
Better:
Prepare a ridgetop zoning ordinance prohibiting ridgetop development unless there are no feasible alternatives .
Best :
Purchase for conservation purposes all ridgetop lots at risk of development.
� Sa�Prt(�l �o �iG(�J
Good :
Discourage homeowners from having dry brush and overhanging trees in High Risk Wildland Fire Areas.
Better:
Encourage homeowners to proactively remove dry brush and overhanging trees in High Risk Wildland Fire Areas.
Best :
Require all homeowners to create defensible space in High Risk Wildland Fire Areas.
Su.s�ainal�le �euelo � wti.ent �o (icr�
Good :
Encourage LEED certified buildings in the city.
Better:
Develop training, incentive, and regulatory programs sufficient to ensure that by 2013 at least 50% of all new
construction in the City is LEED certi�ied .
Best :
Require all new construction (over X s .f. or Y number of units) to be LEED certi�ied or its equivalent .
Transpor�ation �olicr�
Gooa :
Work to develop a Bus Rapid Transit System in the city.
Better:
Develop and adopt a plan for a Bus Rapid Transit System in the city.
Best:
Develop and implement a citywide Bus Rapid Transit System by 2020 that serves the city's most densely
populated areas and employment centers.
'Vt)a�er Gonservation and 'V�ater Qualitr� �olicr�
Good :
Encourage businesses and homeowners to reduce water use .
Bette r:
Seek 204o reduction in per capita water use citywide.
Best :
Develop education and incentive programs to encourage businesses and homeowners to reduce water use by
209'o by 2012 and require all new development to be water neutral through retrofits of existing structures by
2013 .
104
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{�.11 w�.r� ad� ec�ives are eXhaus�ed.
— � �' �am,uv�.
o�' � osev�.i�e
�c�a �er 196g
n many ways the Land Use element is the most Promote infill and walkable communities by setting
"basic" of all of the required elements . As such, minimum density requirements, promoting mixed use,
t e following "model" policies apply mostly to the land and focusing public infrastructure investments in these
use element and many to the most important question areas .
of where growth should and should not be directed
and what kind of growth is desired . These 15 model Conserve and enhance existing neighborhoods
policies provide a starting point for other detailed and by establishing land use policy designafions and
tailored policies, programs, and indicators necessary to incentives which direct intensive development
guide each unique jurisdiction's future . investment pressure to boulevards and districts served
by transit instead of existing neighborhoods not served
by transit .
L,OGatiOn 0 � �ev� �0 � w�.� nt
In Identifying land necessary to accommodate Preserve and value rural areas for working
new development, take into account the potential for landscapes (e .g., farming, grazing, mining), natural
infill first, existing lots of record, and �esource values resource protection ( e .g., water recharge, ecosystem
and infrastructure constraints. [For County General services), and open space recreation uses by requiring
Plans : Work with cities in the County to ensure that minimum parcel sizes large enough to support these
development requiring municipal services occurs uses . To the maximum extent feasible prohibit
within cities and existing urban areas with �irst priority development in high risk areas including but not
given to infill areas. ] limited to flood areas, coastal areas subject to sea level
rise, wildland fire areas, and areas where public water
Preserve a distinction between urban and rural and sewer service cannot be provided .
areas. Direct new growth to areas with infrastructure
committed to an urban level of development .
105
Tr�pe o�' �evelopw�.en�t (2esource �rotection
Strive for jobs-housing match within the city [or, Protect identi�ied resource rich and critical habitat
for County General Plans : within each of the majar areas through programs and implementing ordinances
economic centers in the County] and within major that establish funding for purchase or donation of
development projects to improve quality of life, reduce these areas from willing sellers, transfer or purchase
household costs associated with travel, and reduce of development rights programs, funding measures,
vehicle miles traveled . Jobs housing match means that collaborations with land trusts and state agencies, use
housing stock is affordable to the workforce in and in of private grants, endowments, and other means .
the vicinity of the development project.
� In approving new development, promote infill first (,el"�G�. IYt�� �'or 'Ylew Develo � w�en� E
while promoting socio-economic equity, protection of Provide a clear statement of city [or county] land
environmental resources, and encouraging efficient use values and policies to provide clarity in the permit
development patterns. processing system and to simplify review of projects
that are consistent with the General Plan .
Trans�ortation Ghoices
In approving new development, strive to ensure G�reen. �uildin� and �n.er�� £�F�Ficiencr�
there is an option to safely walk, bicycle, or take public Strive for zero net energy use or new residential
transit to school, work, and essential destinations (e .g., and commercial buildings and development projects .
shopping, banking, recreation, etc .) . Adopt and maintain strong policies, programs, and
ordinances to promote green practices including
Place a high priority on investments underserved green building ordinances that call for adoption of
transportation infrastructure such as pedestrian and energy efficiency standards for construction, new and
bike paths and transit cente � and stops; and invest remodeled buildings, as well as funding sources for
in additional roadway capacity only where there retro�it of existing buildings.
are n � alternatives (e.g., Transportation Demand
Management) available and failure to develop the
capacity would cause signi�icant adverse effects to air Gliw�.afie Ghan� e
quality. Address climate change in land use and other
policies to meet emissions reductions targets in AB 32
as well as locally adopted targets where applicable .
�n�'rastruc� ure and Servicef : Monitor ( ocal climate change indicators (sea level
Provide adequate infrastructure and services for rise, precipitation, temperature, etc .) and plan for
existing residents and businesses . Ensure that new adaptation to changes as warranted .
development neither increases the infrastructure
and public service costs for existing residents and
businesses nor reduces the quality of service by any
significant amount.
Provide for an adequate and sustainable water
supply while protecting wate�sheds and the marine
environment, including surface water, groundwater,
and recharge areas.
106
Public Comments Diamond Bar Draft General Plan : Ch . 1 -4
City' s Proposed Language Changes Comments/ Encouraged Revisions
� Ch . 2 LAND USE & ECONOMIC DEV . E
LU -P -6 When appropriate , r�equire new development Restore original language
to pay its fair share of the public facilities and approved through GPAC . The
off-site improvements needed to serve the necessary flexibility comes in the
proposed use . city ' s ability to specifically define
the word appropriate.
LU - P-8 Ensure �e that new residential We eventually want all of our
development be compatible with the commercial areas turned into
prevailing character of the surrounding mixed - use , pedestrian friendly
neighborhood in terms of building scale , areas . Requiring this is necessary
density; massing, and design . Where the to implement several Land Use
General Plan designates higher densities, Goals such as LU - G - 6 to preserve
rovide require adequate transitions to existing residential neighborhoods .
existing development . Require clearly puts the burden on
the developer to comply with the
city . Ensure suggests the city will
just check on it .
LU -P-9 Incorporate �-� architectural and How is " incorporate" better than
landscape design features in new development " require " ? As an implementation
that create more pedestrian -friendly policy, it needs to be more direct .
neighborhoods , such as orientation to the � ncorporate is vague since it is
street ; setback , or detached garages ; tree-
lined streets ; and landscaped parkways unclear that the developer is
between streets and sidewalks . expected to do so .
�u- P-Zz � Ensure that commercial uses and " Ensure " is not interchangeable
shopping centers are designed in a manner with " require . " Require clearly
compatible with adjacent residential areas in puts the burden on the developer
terms of traffic and noise impacts , building to comply with the city . Ensure
scale , and appropriate transitions and buffers .
puts the onus on the city to just
check on it . The Municipal Codes
that follow should make this
enforceable .
Restore original language from the
LU- P-16 In residential mixed - use areas , � GPAC . Uniess the services are in
encourage theclustering of non- residential visible locations, the mixed - use
uses at key visible locations
area will not ever approach the
"vibrant community" described in
LU - G - 1 and the other Mixed Use
6 Land Use Goals this
implementation policy supports .
Implementation policies need to
give clear and specific direction for
the Planning Commission .
" Encourage" is not enforceable
and does not put the burden on
the developer to comply .
�u- P-1 � Promote '� � ��Tr��„� site designs that create Restore original language
active street frontages and introduce approved through the GPAC .
pedestrian-scaled street networks and street Requiring this is necessary to
designs
implement the Land Use goals that
promises a walkable destination .
As an implementation policy, it
needs to be clear and specific in its
direction . Promote is not
enforceable and does not put the
burden on the developer to
comply .
LU-P- 18 R �� dBevelopment #a should be sensitive Restore original language
to the building form , density , massing , and approved through the GPAC .
scale of surrounding residential Requiring this is necessary to meet
neighborhoods .
Land Use Goals to preserve
existing residential neighborhoods .
LU- P-19 To meet the recreational needs of new Ensure puts the onus on the city to
residents , �e ensure that new just check on it . Use sha/l to make
residential and mixed - use developments the first part of the policy clear
larger than four acres to incorporate public and enforceable .
parkland in the neighborhoods where such
developments are located . Reword :
To meet the recreational needs of
Residential and mixed - use developments new residents, new residential and
under four acres mav ° n ^ � � � � � � + " � � mixed - use developments larger
�, �, , ,, � „ nW, ,, ,, + + „ provide dedicated parkland , in than four acres shall incorporate
lieu fees for sites under four acres, or a public parkland in the
combination , in accordance with Diamond
Bar' s park acreage standards,�.� neighborhoods where such
r,, ,. r� -. + , ,, r � � r o ,� � „f � _ � , .� o � + � developments are located .
LU - P-20 Encourage Require the consolidation and We eventually want all of our
location of parking to the rear and side of commercial areas turned into
buildings . mixed - use , pedestrian friendly
� areas . Adding the word encourage -
will allow the continuation of car-
centric centers . Restore original
language .
Neighborhood Mixed Use
LU- P-22 Encouraqe �c�l-IF@ commercial development Restore original language from
to incorporate outdoor green spaces GPAC . The necessary flexibility will
appropriate and usable for patrons and visitors . come in the city ' s ability to
specifically define the word
appropriate . Implementation
policies must give clear and
specific direction for the Planning
Commission . " Encourage" is not
enforceable and does not put the
burden on the developer to
comply .
Residential and mixed- use developments on Replace " should " with "shall " . As
LU- P-23 For sites larger than two acres in size should an EIR mitigation policy, it must be
include , require the construction of a range of expressed as mandatory .
housing types that meet the needs of a
diversity of income levels and household sizes .
LU-P-24 ��guildings located along corridors Replace " should " with "shall . " As
should be designed to face the street and an EIR mitigation policy, it must be
define the public realm with a mix of building expressed as mandatory .
patterns , ground floor transparency for This policy is necessary to support
commercial uses , and pedestrian -oriented
elements such as building entrances and the Land Use Goals for Mixed - Use
ublic outdoor s aces . developments .
LU-P-30 �� Ensure that building frontages and This policy must be enforceable to
streetscaping define the public realm and support the Land Use Goals for
encourage pedestrian activity and comfort with Mixed - Use developments .
a mix of building patterns , ground floor
transparency for commercial uses , and Reword : Building frontages and
pedestrian - oriented elements such as building streetscaping shall define the
entrances and public outdoor spaces . public realm . Encourage . . . etc .
LU- P-31 Promote �e convenient , attractive , and Restore original language from the
safe pedestrian , bicycle , and transit GPAC . Flexibility here is provided
connections between the Transit- Oriented by the words " convenient ,
Mixed Use neighborhood and surrounding attractive, and safe . " City codes
neighborhoods and other destinations within
Diamond Bar such as schools , the Town and the planning commission can
� Center , and parks . define what these words E
specifically mean .
Words such as promote , like
encourage, make this vague and
unenforceable . This policy is
essential to fulfilling the goals of
Mixed - Use areas and provides
mitigation for climate change and
GHG . Mitigation policies need to
be enforceable .
LU- P-34 Ensure �s�+r� that development +�ase�er-�s Restore original language from
evaluates and mitigates to extent practical GPAC . As a mitigation policy in the
noise and air quality issues re � ated to the EIR, it must be expressed as
proximity of the SR-60 and Metrolink .
mandatory .
We understand that 100%
mitigation is not possible , so
specific mitigations can be set
through the EIR .
TOWN CENTER MIXED USE
LU- P-35 �6 Ensure that any reuse , redevelopment , Ensure puts the burden on the city
or refurbishment of the Town Center area to check, but does not put the
maintains a dominance of retail , dining , and burden on the developer to
entertainment uses . Allow residential uses
within the designation ' s permitted maximum comply . It is not clearly
range , as well as offices , either on upper floors enforceable policy necessary to
or otherwise in locations that do not detract meet the mixed - use land use
from the area ' s predominant role as a goals .
community shopping , dining , and Reword :
entertainment destination . Any reuse , redevelopment, or
refurbishment of the Town Center
shall maintain a dominance , etc .
LU-P-36 prioritize and support renovation , infill , and This policy is essential to fulfilling
reuse of the existing commercial center . the goals of Mixed - Use areas and
Require , where appropriate , redesign and provides mitigation for climate
modernization of architectural treatment and change and GHG .
the introduction of finer-grained pedestrian Revise 2nd sentence : Redesign and
network, as well as utilization of parking lots to modernization of architectural
create central gathering spaces and make the treatment shall introduce a finer-
Town Center more pedestrian -friendly . grained pedestrian network . . .
LU-P38 Promote � ^ �-� � ��„��site designs that create Promote will not lead to the active
an active street frontage and screen off-street street frontage everyone wants .
parking from the Diamond Bar Boulevard and As an implementation policy, it
� Golden Springs Drive frontages . must give specific and enforceable E
direction .
Restore to original or revise to :
Site designs shall create an active
street frontage . . .
LU-P-39 .�.�sStreetscape and intersection This is a safety issue that must be
improvements along the major corridors of strongly worded . It mitigates for
South Diamond Bar Boulevard and Golden climate change and GHG .
Springs Drive should enhance connectivity,
comfort, and safety for all modes of travel , and Replace should with shall.
increase accessibility to and from surrounding
areas .
LU-P-40 Study, as necessary , the implementation of Remove "as necessary . " It causes
safe pedestrian connectivity between the confusion and does not define
north and south sections of the Town Center what would make it necessary .
Mixed - Use project site and at Lorbeer Middle This is an important safety issue
School . that must be clear .
Suggested change : Prior to any
redevelopment or redesign of the
area , study the implementation . . .
LU-P-42 Avoid expanses of surface parking and This is an EIR mitigation policy that
�encoura � e the consolidation and must be expressed as mandatory .
location of parking to the rear or side of The unenforceable language will
buildings where appropriate . lead to more auto - centric
shopping areas, not the vision of
vibrant and walkable destinations
promised in the land use goals .
LU-P-43 When updatinq the Develoqment Code' s " Extent possible" is vague . Change
parkinq standards or preparinq specific plans , to " Fullest extent possible" for
€evaluate parking ratios for the Town Center to clarity .
balance the financial feasibility of development
pro ' ects with the provision of adequate parkin
for visitors . Coordinate with developers and
transit agencies to the extent possible to
provide alternative modes of transportation to
allow for reduced parkin requirements .
LU - P-44 When warranted , R �, �; ���-a feasibility study Restore original language
should be prepared for any hotels proposed approved through GPAC . Building
in the Town Center area to demonstrate a hotel without a feasibility study
. market demand and economic viability . �
makes no sense . How often has
building out of optimism wasted
precious lands and resources ?
COMMUNITY CORE OVERLAY
LU-P-46
Where appropriate , �require development to Remove "where appropriate . "
provide courtyards and plazas , public art , and ��Where appropriate" is unclear
landscaped open spaces and pathways and makes this unenforceable .
between buildings that promote safe and public art helps create a sense of
convenient pedestrian movement
place . Flexibility comes from the
specific amount of public art,
landscaped open spaces and
pathways the city codes and
planning commission feels are
specifically appropriate .
(This should be moved to
placemaking . )
LU- P-47 Q � � , , ; r � + ti -, � � guildings should be designed to Replace "should " with "shall . "
define the public realm and promote sidewalk This is the Community Core
activity and neighborhood interaction in public Overlay ! If we would sacrifice our
spaces . golf course and implement LU - G -
26, we must make it clear that we
want a type of development which
moves us into the future, not takes
us back to the past .
LU-P-48 promote�e convenient, attractive , and (This should really be LU - P -49 . )
safe pedestrian , bicycle, and transit Restore original language
connections both within the Community Core approved through GPAC .
area and between the Community Core and As an important mitigation policy
surrounding neighborhoods and other for the EIR and CAP, this must be
destinations within Diamond Bar . expressed as mandatory .
This policy is essential to
implement to create the sense of
place promised the land use goals .
Flexibility will come in defining
convenient, attractive and safe .
LU-P-50 Where practicable , �s�s-t�a# Restore original language
�e consolidated and located approved through the GPAC .
ap rkinq in a manner that As modified , this policy is no
encourages pedestrian activity . longer aligned with LU - G - 26 .
e Avoid expanses of surface parking "Where practicable" makes it �
(see Chapter 3 , Community unclear and unenforceable .
Character and Placemakinq) .
PUBLIC FACILITIES, OPEN SPACES ,
HILLSIDES
�u-�-z� Designate adequate a ��l-s� i#�a Why remove " equitably
land throuqhout the communitv for educational , distributed " ? This is a goal not a
cultural , recreational , and public service policy . Seeking equitably
activities to meet the needs of Diamond Bar distributed land is therefore
residents .
what' s called for here .
LU-P-56
Ensure that development on privately- owned , Restore the original language
residentially designated land in hillside areas is approved through GPAC . This is
compatible with surrounding natural areas by an important EIR mitigation policy .
promotinq the followinq desiqn The CA Office of Planning and
principlesrcquirinq that dcvclopmcnt :
Research clearly states : " For a
a . Minimizes—as articulated by the policy to be counted towards
landform grading criteria of the mitigating the plan ' s impacts, it
Development Code' s Hillside must be expressed as mandatory . "
Management requlations Ordinance Changing this language conflicts
excavation , grading , and earthwork to With guiding policies for land use
retain natural vegetation and topography ; and resource conservation .
This policy has been submitted to
b . Preserve existing vistas of significant and approved by experts in several
hillside features such as ridgelines , areas . As it was originally written ,
particularly from public places ; it was clear and enforceable .
Changing " require" to " promote "
c . Do not create unsafe conditions ; makes the policy meaningless and
unenforceable .
d . Incorporates site and architectural
desiqns that are aa��+s sensitive to
natural contours and land forms � ^ � },�-�:�
, hydrological features ;
e . Preserve natural watersheds , including
existing vegetation within undeveloped
hiilside areas to the maximum extent
feasible , including mature trees and
native plant materials ;
f. Permits Incorporate fuel modification as
� part of the Fire Department' s DistricYs �
approved fuel modification program ;
g . Utilizes planting palettes consisting of
drought tolerant , fire resistant , non-
invasive plants that are native to or
compatible with those colors similar to
thosc of nativc materials in the
surrounding area ; and
h . Groups plants within swale areas to
more closely reflect natural conditions
within landform graded slopes .
Ch . 3 COMMUNITY CHARACTER &
PLACEMAKING
CC-P-3 ��� �.r.� Encouraqe new mixed- use Revise to :
development to incorporate public art that New mixed - use developments
celebrates the history and character of shall incorporate public art . . . .
Diamond Bar to reinforce community identity ,
create unique places , and provide a basis for
community pride and ownership .
cc-P-s Where sound walls or perimeter walls or Replace " should " with " shall " to
fences are permitted , �e��i�te thev be a clear and enforceable policy .
should be stylistically integrated with adjacent Flexibility will come from
structures and terrain , and to use landscaping Municipal Codes and Planning
and vegetation to soften their appearance .
Commission defining what is
"stylistically integrated . "
Parks and Open Spaces
CC- P-13 Encouraqe � � ^,�, � � ��m� landscaped common Flexibility comes in specifically
public spaces a�e to be incorporated into new defining the exact nature of
mixed - use development . landscaped common public spaces
by the Planning Commission
and /or Municipal Codes .
1 Revise to :
Landscaped common public spaces
shall be incorporated into new
mixed - use development .
CC-P-16 ���� Ensure that common spaces be Flexibility comes in specifically
integrated elements of development , defining the exact nature of
coordinating landscaping and amenities landscaped common public spaces
with the projects ' architecture and by the Planning Commission
CharaCter . and /or Municipal Codes .
Revise to :
Common spaces shall be inte � rated
elements of development . . .
Site Planning and Parking
cc-P-zi �e-sSite plans should be desiqned to Replace "should " with "shall " to
create pedestrian - oriented neighborhoods that be clear and enforceable .
follow these guidelines : Flexibility will come with specific
definition of guidelines in the
a . Buildings should be oriented to the street; Municipal Codes, evaluated by the
b . Garages and parking areas
should be screened and/or Planning Commission .
located at the side or rear of
properties wherever possible ;
and
c . Landscaping , sidewalk
conditions , and other streetscape
elements should be improved
during rehabilitation and new
construction .
CC-P-23 Where appropriate and feasible , locate and We understand that we cannot
orient active uses (such as commercial uses legislate specific designs from the
and parks) along the street edges of new general plan . The word
mixed - use . development , at street corners , or appropriate gives all the necessary
along main roadways internal to larger flexibility .
developments .
Remove the word "feasible " which
causes confusion .
cc-P-2s Restore original language �
° Ensure that approved through GPAC . The
new development does not cast significant addition of solar power will be a
shadows over existing development . Require
detailed shadow studies as part of recurring issue in Diamond Bar
development review where appropriate . over the next 20 years . Are not
adopting development code
standards for shadows a good
thing ? Maybe we can add wording
that this should be done as a part
of the Muni - Code revisions
required by the new general plan .
CC-P-33 Do� Encouraqe new mixed - use and Restore original tanguage
commercial development to incorporate approved through GPAC .
visual quality and interest in architectural
design on all visible sides of buildings The words like foster and
through the following approaches : encourage may be appropriate for
goals that can be broad and
a . Utilizing varied massing and roof types, unquantifiable . However,
floor plans, detailed planting design , or implementation policies, on the
color and materials; other hand , must provide
b . Maintaining overall harmony while guidance to decision makers in
providing smaller- scale variety; and order to be enforceable .
c . Articulating building facades with Encouragement is not
distinctive architectural features like enforcement .
awnings, windows, doors, and other such
elements .
Town Center Mixed Use Focus Area
CC- P-45 0 �,�� � ��„T�The design of new development Replace "should " with "shall " to
should � be pedestrian - oriented , with the be clear about how this policy
majority of building frontages located at the must be implemented .
new street edge and with entrances located
along the roadway or along pedestrian
pathways or public spaces . Flexibility will come from specific
definitions in the Municipal Codes
and interpretation by the Planning
Commission .
Transit Oriented Mixed Use
CC-P-57 �� promote the pedestrian comfort and (This is really CC- P - 58 ? )
safety of crosswalks along South Brea Canyon Safety is a necessity and cannot
Road and South Lemon Avenue . just be " promoted " to meet the
goal of a walkable destination .
a E
Revise to :
To prepare for planned
development , improve the . . .
Community Core Focus Area
CC- P-61 �.� � ��q � guildings should be designed to Replace "should " with "shall " to
define the public realm and promote sidewalk be clear about what is expected .
activity and public spaces for neighborhood Flexibility will come from the
interaction .
specific definition of public realm
in Municipal Codes and Planning
Commission decisions .
CC- P-63 Create a fine-grained pedestrian -scaled " Ensure " is not interchangeable
street network and ��; �� ? � ensure that with " require . " Require clearly
buildings and streetscapes encourage puts the burden on the developer
pedestrian activity and comfort . to comply with the city . Ensure
puts the focus on the city to just
check on it . This must be an
enforceable policy in order to align
with other mitigations and goals
for climate change and GHG .
Revise to :
Create a fine -grained pedestrian -
scaled street network . Building
and streetscapes shal/ encourage
pedestrian activity and comfort .
cc- P-6u Replace should with shall to be
�c�ti+�e t#� �Parking should be clear about what is expected and
consolidated and located in a manner to be enforceable . It must be
that encourages pedestrian activity . consistent with other goals and
Avoid expanses of surface parking . policies . If we are to lose the golf
course, we would want no less
than the pedestrian - oriented
development promised by the
goals .
Ch 4 CIRCULATION
Transportation Network/Street Design
� CR-P- 1 When redesigning streets , plan for the needs Restore original language �
- of different modes by-i+-Fser�e�a�� considerinq approved through the GPAC . The
elements such as shade for pedestrians , safe Words "such as" give this policy
pedestrian -friendly crossings/intersections ,
lighting at the pedestrian scale , bike lanes , the flexibility it needs .
signage visible to relevant modes , transit " Consider" is not measurable and
amenities , etc . too vague for an implementation
policy that can be enforced .
�R'P'Z ��- Promote new street designs and Restore original language
efforts to retrofit existing streets in residential approved through the GPAC .
neighborhoods minimize traffic volumes and /or This is a mitigation policy in the EIR
speed as appropriate without compromising and must be expressed as
connectivity for emergency vehicles , bicycles ,
pedestrians , and users of mobility devices . mandatory to count towards
mitigation . " Promote" is another
word that is vague and
unenforceable .
CR-P-S �@�{�-�} Necessary transportation Replace should with the word
improvements �e- should be in place , or shall.
otherwise guaranteed to be installed in a timely Unless this is required , the traffic
manner , before or concurrent with new impacts will be unmitigated .
development . In evaluating whether a
transportation improvement is necessary , Requiring this will support
consider alternatives to the improvement mitigation policies and goals for
consistent with CR-G - 1 , and the extent to circulation , climate change and
which the improvement will offset the traffic GHG .
impacts generated by proposed and expected
development . The flexibility here comes from the
word necessary .
CR- P-6 Restore original ( anguage
approved through the GPAC .
c+ � � rl � i + ho im � n� r�f � iohinlo miloc
#�ue�e�-�T�_aa�Continue to This language change would
implement congestion mitigation undermine the EIR and related
measures to ensure that new projects CAP mitigations . This is a
do not significantly increase local City mitigation policy in the EIR and
congestion based on defined level of must be expressed as mandatory
service ( LOS) standards . to count towards mitigation .
Reduction of VMT, not just LOS, is
required to meet the state ' s
standards .
CR-P-7 Support the development of se�-City Restore original language . Other
street design standards that : cities have explicit street design
� a . Address the needs of different modes standards . Flexibility will come by �
according to roadway classification ; the city creating a plan for this to
b . Reduce the potential for conflicts and happen , with the understanding
safety risks between modes ; and that it might not occur overnight .
C . Support and manage the use of
transportation options that will become
increasingly popular in the future, such as
TNCs, AVs, micro -transit ( privately
operated transit ) , and
other emerging transportation technologies .
Safety
CR-P-22
Remove the word "feasible" to
Implement traffic calming measures prevent confusion . The phrase
to slow traffic on local and collector ��where appropriate " already
residential streets and prioritize implies flexibility . Implementation
these measures over congestion policies should be clear and
management where appropriate enforceable .
and feasible .
Pedestrian and Bicycle Circulation
CR-P-31 Consider updatinq l�p�t�the Parks and Implementation policy should do
Recreation Master Plan using community input more than passively " consider . "
and best practices to identify bicycle
infrastructure needs such as gaps in the
network , prioritize facilities and improvements , Revise to :
and identify funding for proposed facilities . Review and update the Parks and
Review and update the plan as necessary . Recreation Master Plan as
necessary . . . Then delete the last
sentence .
CR-P-32 �� Promote pedestrian and bicycle Restore original language
connectivity in existing residential approved through the GPAC .
neighborhoods , utility easements , and/or flood promote is vague , unmeasurable
control channels , including connections and unenforceable .
through cul- de-sacs to other streets or
community facilities where feasible . This is a mitigation policy in
several areas of the EIR and CAP
which need policies to be
expressed as mandatory to count
towards miti � ation . The words
where feasible already give this
policy the necessary flexibility to
create this connectivity .
S
CR-P-36 Where appropriate , plant street trees and The words where appropriate
provide landscaping along major pedestrian make this policy meaningless , and
and bicycle routes to provide shade and unenforceable because
barriers between cyclists and motorists , as well pppropriate is not defined . Adding
as enhance aesthetics .
trees and landscaping is essential
to make those routes more usable .
This policy should align with other
polices to mitigate for climate
change and promote multimodal
transportation .
Revise to : As those routes are
designed or improved , plant street
trees and provide . . .
CR- P-43 When planninq capital improvement proqrams , Safety is critically important to any
consider proiects that strengthen the protection community . We understand that
of cyclists in bike lanes by implementing making a sweeping mandate may
improvements such as increasing visibility of seem unrealistic . Still , we ' ll need
lane markings and signage , increasing bike
lane widths , raising lanes , designing safer to do more than "consider capital
intersection crossings and turns , and buffering improvements" to improve safety .
lanes from traffic wherever feasible , prioritizing One lawsuit payout for failing to
bicycle lanes along arterials . create the necessary safety would
have paid for a significant amount
of safety measures .
Suggested language :
As bicycle traffic increases,
strengthen the protection . . .
PUBLIC TRANSPORTATION
CR-G-13 �,;.�„�,;�Su ort the availability , efficiency , Restore original language
and effectiveness of Integrate transit nodes approved through GPAC . This is a
and connections with adjacent existing and goal which we have 20 years to
proposed developments and destinations—
such as employment centers , commercial achieve . It supports mitigations
centers , ma ' or attractions , and ublic for climate change and GHG in EIR
pedestrian spaces—to make them more and CAP . "Support" alone will not
accessible to transit users . lead to any progress .
CR- P-46 Where feasible , integrate transit nodes Remove "where feasible , " which
and connections with adjacent existing makes it vague and ineffective for
and proposed developments and providing direction .
destinations—such as employment �
centers , commercial centers , major This policy is critical to reducing
attractions , and public pedestrian
spaces—to make them more traffic congestion and mitigating
accessible to transit users . climate change and GHG .
CR- P-47 As opportunities arise , coordinate with Foothill Restore to language approved
Transit , Metrolink , and other transit providers through GPAC . "As opportunities
to incorporate real -time information systems at arise " creates confusion since
transit stops so that passengers will know those are not well - defined .
when their vehicle is expected to arrive .
CR- P-48 As opportunities arise , work with Foothill Restore to language approved
Transit to maintain and improve bus stops and through GPAC which gives clear
shelters , as well as identify areas where direction . "As opportunities arise"
service can be improved or expanded to
increase system use . creates confusion since those are
not well - defined .
CR-P-51
� sSupport , where Restore to language approved
feasible , privately funded local through GPAC . It is already being
transit systems that are accessible done , so why not continue to do
for seniors , youths , and individuals so ? "Where feasible" makes this
with disabilities , to ensure that all policy confusing and
unenforceable . It is a CAP policy
community members have the that should be enforceable .
ability to travel while decreasing
congestion .
CR-P-53 ��Consider updatinq parking " Consider" is not measurable and
standards in the Municipal Development specific enough for
Code to ensure that they are reflective of implementation policy .
the community' s needs , using current data
on parking demand and taking into As written consideration is all that
consideration demographics and access to Will ever be required by this policy .
alternative modes of transportation .
As an EIR and CAP mitigation
policy, it must be expressed as
mandatory and enforceable to be
counted toward mitigation .
We recommend to say
" Periodicallv update the parking
� standards . . . " �
CR- P-54 Consider incorporatinq ��e�I��criteria Restore original language
in the Municipal Development Code to approved through the GPAC .
allow reductions in parking requirements in " Consider" is vague and
exchange for VMT reduction measures . unmeasurable/ unenforceable .
This is also a CAP policy and EIR
mitigation policy which needs to
be expressed as mandatory to be
counted towards mitigation .
CR- P-55 Consider the establishment of ���r-per�e Restore original language
common bicycle parking requirements for approved through the GPAC .
appropriate uses—including multifamily " Consider" is vague and
residential and office—in the Municipal unmeasurable/ unenforceable .
Code This is also an EIR mitigation policy
which needs to be expressed as
mandatory to be counted towards
mitigation .
CR-P-56 G � + � hGch ron � � irnmor� 4c + ., rr.,� � � �1 Restore original language
Encouraqe dedicated parking and charging approved through the GPAC .
stations for electric vehicles . " Encourage" is vague and
unmeasurable/ unenforceable .
This is also an EIR and CAP
mitigation policy which needs to
be expressed as mandatory to be
counted towards mitigation .
CR- P-57 Consider incentives to encouraqe This is also an EIR and CAP
carpoolinq , such as � ^ ^^ � + " " ' ^ } " ^ mitigation policy . " Consider" is
��e�r+s�ie��# preferential parking for high - vague , unmeasurable , and
occupancy vehicles_ unenforceable .
E��_
Revise to :
Encourage carpooling with
incentives such as preferential
parking for high occupancy
vehicles .
CR-P-59 As opportunities arise , work with Caltrans Restore original language . This is
to evaluate existing Caltrans -operated also an EIR mitigation policy which
park- n - ride facilities within the City and needs to be expressed as
� expand the facilities where necessary . mandatory to be counted towards �
mitigation . "As opportunities
arise" creates confusion since
what constitutes an opportunity is
unclear .
Respectfully submitted for the public record by Responsible Land Use .
Public Comments Diamond Bar Draft General Plan : Ch . 5 -8
Resource Conservation
a �
City ' s Proposed Language Changes Comments/ Encouraged Revisions
RC - P - 1 As opportunities arise , �obtain and Restore original language . The
designate open space land through definition of the word obtain is
acquisition techniques such as : not time sensitive .
a . Requirinq thc incorporation of This policy is telling us how to
� incorporatina open space and acquire open space , not that we
recreational areas into the design need to " obtain " open space
of new development projects , today .
preserving and enhancing as open
space significant stands of Necessary flexibility in point a . is
vegetation , natural landforms , and 9iven by the words such as in the
any areas of special ecological top paragraph . Restore original
significance through site design language there as well .
approaches such as clustering and This is also an EIR mitigation
ecological planning . policy , which must be enforceable
b . Allowing clustering or transferring and expressed as mandatory to
of all or part of the development be counted towards mitigation .
potential of a site to a portion of the
site to preserve significant
environmental resources such as
natural and native habitats ( oak
woodland , coastal sage scrub ,
etc . ) , natural creeks , artesian
springs , vernal pools , seeps ,
riverines , wetlands , riparian
habitats , wildlife corridors and
linkages , and natural geological
features within proposed
developments as open space .
c . Allowing for acquisition of open
space lands through the
entitlement process and the
transfer of densities among land
uses of like desi nation .
d . Collaborating with land trusts and
other conservation groups to
acquire open space land through ,
but not limited to , conservation
easements .
� RC - P -8 ��#-Support and cooperate with the This is also an EIR mitigation �
efforts of other jurisdictions and policy which must be enforceable
conservation organizations to protect and expressed as mandatory to
prominent ridges , slopes , and hilltops be counted towards mitigation .
in and adjacent to the City and its Adding the words to the extent
Sphere of Influence to the extent feasible makes the policy non -
feasible . enforceable . Those words must
be removed .
RC - P -10 Require , to the qreatest extent feasible , Restore original language .
new development to preserve mature
This is also an EIR mitigation
native trees including oak and walnut , policy which must be enforceable
and trees of significant cultural or
historical value such as sycamore and and expressed as mandatory to
arroyo willow , etc . , as set forth under be counted towards mitigation .
the Diamond Bar Tree Preservation and Necessary flexibility for this policy
Protection Ordinance . Review the comes from the words significant
ordinance periodically and update it as cultural orhistorical value .
necessary to reflect current best
practices .
RC - P -11 Require that all development , including Restore original language .
roads and trails , proposed adjacent to
riparian and other biologically sensitive This is also an EIR mitigation
habitats avoid , to the qreatest extent policy which must be enforceable
feasible , significant impacts that would and expressed as mandatory to
undermine the healthy natural be counted towards mitigation .
functioning of those areas . Require that
new development proposed in such
locations be designed to :
a . Minimize to the greatest extent
possible or eliminate impacts on
environmentally sensitive areas ;
b . Protect the visual seclusion of forage
areas from road intrusion by
providing vegetative buffering ;
c . �e#� Provide wildlife movement
linkages to water , food , shelter , and
nesting sites ;
d . Allow wildlife and migration access
by use of tunnels or other practical
means ;
e . Provide vegetation that can be used �
by wildlife for cover along roadsides ;
f. Avoid intrusion of night lighting into
identified areas through properly
designed lighting systems ;
g . Avoid impacts to wetlands , natural
springs and seeps and maintain
access for wildlife or when natural
water areas are removed or blocked
provide a locally suitable and equal
replacement ; and
h . To the greatest extent possible ,
prevent street water runoff from
flowing into waterways
RC - P - 16 As opqortunities arise , �coordinate with Reuse of household gray water
local water agencies to encourage and will become more and more
expand the use of reclaimed water, stored important as time passes .
rainwater, or household gray water for
irrigation and other appropriate uses and The words As opportunities arise
consider construction of dual water are weak and undefined . Drop
systems, where feasible, for development those words . If additional
" flexibility" is really needed , make
the first line of this policy read as
follows :
" Coordinate to the greatest extent
possible with local water agencies
to encourage . . . "
Delete the words where feasible .
Necessary flexibility comes with
the word encourage .
RC -P - 19 Require Ensure new development to This is also an EIR mitigation
reduce the waste of potable water policy which must be enforceable
through the use of drought-tolerant and expressed as mandatory to
plants , efficient landscape design and be counted towards mitigation .
application , and reclaimed water Replace the new word Ensure
systems where available . with Require . Where available
allows the necessary flexibility .
RC - P -20 D �� Encouraqe the implementation This is also an EIR mitigation
of the latest water conservation policy which must be enforceable
� technologies into new developments . and expressed as mandatory to E
be counted towards mitigation . -
Restore original language .
Besides , water over the next
twenty years will only become
more and more scarce . Why
would we not wish to require new
developments to use the latest
water conservation technologies ?
RC - P -21 �ce�+e'-� Ensure �+Ider-s developers � This is also an EIR mitigation
provide information to prospective policy which must be enforceable
buyers or tenants within the City of and expressed as mandatory to
Diamond Bar regarding drought-tolerant be counted towards mitigation .
planting concepts . Restore the word require .
RC - P -22 Rorv � � iro + ho � � � o nf m � � lnh � „ � , ., ,� � ,. � „ o Restore original language .
oro � c 4n imr� rn� ic 4hc �e �7 �er h � I �Jinry
This is also an EIR mitigation
policy which must be enforceable
��a���� h +ho � 4� r� `Jnrrlo� +�. and expressed as mandatory to
�,, , � +, �e � , , . , , ,, ,� + � e r- ; +. ,� � � n �� +or be counted towards mitigation .
Gffinion4 I nr� lJcn � r� o (lr(Jin � r� no . / P � I � `."
\ 1
is unnecessary because the City 's
Water- Efficient Landscape
Ordinance already sets forth
requirements for soil amendments
and other methods to minimize
evapotranspiration . )
RC - P -25 � ^ ^ + r„ � "„� imr� r�� io + ho n , , ., � ; +„ ,. f Restore original language .
This is also an EIR mitigation
+ „ ir� nnrr� nro4o ho � � mononomon � policy which must be enforceable
and expressed as mandatory to
' be counted towards mitigation
I�lo � iolnr� mon � / I Ifl \ � � r� 4onio � 4h � �
c � � r� r� nrF �n ci }o ro4onFinn rle4cn4inn
r i
mo �+ r���� nh c+ e� ir� fil � r�+ 4i � n
_
> >
r�+ inf�+ ll h �+ r� mc4 �+ nrl � ico / PQI � C�/ � S
\ J
unnecessary because it is merely
� reciting existing State water quality �
regulations . )
RC - P -25 Control and improve the quality of Restore original language .
stormwater enterinq local water
bodices bv requirinq new developrnent This is also an EIR mitigation
policy which must be expressed
to incorporatc best management as mandatory to be counted
practices ( BMPs ) , and Low Impact towards mitigation .
Development ( LID ) strateqies that
su ort on site retention , detention ,
and /or treatment of stormwater throuqh
means such as infiltration ,
evapotranspiration , biofiltration , and
rainfall harvest and use . ( Policy is
unnecessary because it is merely
reciting existing State water quality
regulations . )
RC - P -26 Q � ry � � � r� + ho irv� r� lomon4o � inn „f � Restore original language .
This is also an EIR mitigation
° policy which must be expressed
(� nr� � 4r� in� inn (� enor� l Dormi� (li � .� lifio �J
as mandatory to be counted
� towards mitigation .
� imi� � ^. n � � ic� 4iirh �+ nno nn� i� ii4ioo c� � inh �sc
�
�+ � ir� irl � �ecr� � Inr�o � � mc4 � hlo oro � c
� i
�+ n �J nrncivn cnilc • � r+ iJ minimive
i
cor� imovi4o � inn . � POI ' C�/ ' S
7
unnecessary because it is merely
reciting existing State water quality
regulations . )
RC -P -27 �e Ensure that post-development This is also an EIR mitigation
peak stormwater runoff discharge policy which must be enforceable
rates do not exceed the estimated pre - and expressed as mandatory to
development rate and that dry weather be counted towards mitigation .
runoff from new development not Restore original language .
exceed the pre-development baseline
� flow rate to receiving water bodies . �
Public Facilities and Services
PF -G -2 Provide new parks in concert with new Restore original language . This is
residential development , and strive to a goal , not a policy . This is
distribute � ^ � " � ' � � � ci irinn + h � +_parkland something to which our city should
across always aspire . Ask any
throuqhout the City . neighborhood resident and they
will tell you they want parkland
" distributed equitably" across the
city .
PF -G -3 �+r-� €r�+ r� that new development Restore original language . This is
bears the costs of new parks and a goal . Require is appropriate
recreation facilities that are needed to here . This must be a mandatory
meet any increase in demand goal . There should be no
resulting from the new development , question that new development
or from which the new development should bear the cost of new parks
would benefit . and recreation facilities .
PF -P -6 Monitor and seek to actively engage in Seeking to actively engage does
Cal Poly Pomona 's plans for the not technically require us to
redevelopment of the former engage at all . Remove new
Lanterman site , and seek joint use language . Reword first part of the
opportunities for parks and recreation policy as follows :
facilities developed on the site "Actively engage as much as is
reasonably possible in Cal Poly
Pomona ' s plans for . . . "
PF -P -7 Endeavor to distribute new parks Proposed changes here turn the
eq-�ai#� throughout Diamond Bar , policy language in on top of itself.
striving to ensure that residents are New Language :
within a 3/a- mile radius of a " Strive to ensure that all residents
neighborhood park or community park . are within a 3/4 mile radius of a
neighborhood park or community
park . "
Accomplish that and parks will be
spread equitably throughout the
city .
a PF -P -11 �
Where appropriate , promote the joint Restore original language .
development , use , and maintenance Because it' s always appropriate
of parks and open space facilities with to promote this . Just do it .
adjacent jurisdictions , the County of Nothing in this language
Los Angeles , and the State of suggests we must be successful
California . in our promotional efforts .
PF -P -18 Where feasible , link parks , open Replace feasible with the word
spaces , and regional hiking trails with possible . The word possible is
a trail network . Incorporate existing stronger , while still allowing the
trails and bicycle and pedestrian necessary flexibility .
infrastructure , working with willing Feasible , used here gives no
landowners to prioritize land guidance . In practice , it will never
acquisition where necessary . Where be feasible . However , someday , it
possible , incorporate landscaping and could easily become possible .
enhance natural features .
PF -P -19 Consider ��e updatinq the Parks Strike new language . Revise
and Recreation Master Plan to include beginning of policy as follows :
standards for planning , design ,
management , and maintenance of " When updating the Parks and
trails and pathways within parks , Recreation Master Plan , include
preserves , open spaces , and rights - of- standards for planning ,
way . Encourage the installation of design . . . "
amenities such as rest areas ,
benches , water facilities , hitching That gives the needed flexibility .
posts and wayfinding signs serving Elsewhere we specify that the
trails and scenic routes that adhere to Parks and Recreation Master
a standard signage palette . Plan should be periodically
updated .
PF -P -20 Strive to maintain the Parks and The word , strive , here , is weak .
Recreation Master Plan goal of at Before proposed modification ,
least one mile of recreational trails for the policy presupposes that one
each 10 , 000 persons . mile of recreational trails for
each 10 , 000 already exists .
Given the population forecasts
elsewhere in this document ,
keeping that ratio intact should
be no problem . Restore original �
language . -
PF -P -22 Consider opportunities to partner with As was mentioned at the first
non - profit organizations to assist in study meeting , words matter . We
developing and managing the trails do not wish to merely consider
system and providing community opportunities . Strike new
outreach and education language . Revise existing
language to read :
" Partner as able with non -profit
organizations . . " .
PF -P23 Restore original language . PF - P -
19 contains no language which
�.., ,, ., o ,.+ ; , , ;+. , � ,, ,� � ,. ,.,.�. � +„ + ho ro,. � � n -, � mentions connectivity and access
+ r, ; ' � "� +om ( Duplicative of PF- P - 19 . ) to the regional trail system .
PF -P -28 As resources become available , When do we expect resources to
explore and pursue the feasibility of become auailable to expore ? The
developing dedicated community practical reality will be never , as
centers and programming in Diamond resources will always be tight .
Bar for teens , youth , and seniors . Strike the new language . Rewrite
beginning of policy as follows :
" Explore , and pursue as able , the
feasibility of . . . "
PF - P -31 Require , when appropriate , the Really? Requiring the
construction of water, sewer, drainage , construction of water , sewer ,
and other necessary public facilities , and drainage and other necessary
encourage storm water capture prior to or public facilities prior to new
concurrent with new development . development is always
appropriate . Restore original
language .
PF -P -33 Maintain a development fee structure Restore original language .
that ensures , when appropriate , that Because this will always be the
costs for new capital facilities and case as well . If we leave the
expansion of existing facilities words when appropriate in any of
necessitated by the approval of new these polices , the staff and
development or intensification of Planning Commission will wind up
existing development are funded by the in endless arguments with
proponents or beneficiaries of projects , developers over the definition of
in proportion to the demand created by appropriate .
� the development . �
PF - P -36 �I�i## SUppOI� the Walnut Valley Restore the words work with .
Water District (VWWD ) in efforts to Strike the new word support.
assess the condition of water distribution Adding the words in efforts gives
and storage systems within Diamond Bar this policy the necessary flexibility .
and plan for refurbishments as needed .
PF -P -38 As opportunities arise , work with the Los Restore original language . This
Angeles County Public Works must be mandatory . We always
Department ( LACPWD ) and Los Angeles want enough wastewater
County Sanitation District ( LACSD ) to treatment facility capacity to
ensure that wastewater treatment handle planned new development .
conveyance systems and treatment
facility capacity is available to serve Muni -Codes should assess
planned development within Diamond developer fees large enough to
Bar. help cover costs of increased
capacity .
PF -P -41 As resources become available , seek Restore original language . The
cooperation �I� with the LACFCD to city' s drainage infrastructure is a
complete a drainage master plan for critical health and safety system .
Diamond Bar with a view to identifying The words update it periodically,
any deficiencies within the city ' s drainage as needed give this policy the
infrastructure system , and update it necessary flexibility .
periodically , as needed .
Besides , we need to take an
active role , here , not merely seek
cooperation .
PF -P42 When resources are available , consider Strike suggested changes . In
developin � �e�e�a�-a plan for the practice , the resources will never
improvement and expansion of the become available . Besides , we
communications infrastructure network wish to more than merely
to address existing infrastructure needs consider .
and development opportunities , and We do need a currently updated
provide cost effective and efficient plan because the communications
solutions , including exploring the infrastructure network will likely
possibility of using City property and undergo radical improvements
rights -of-way for communication over the next finrenty years .
infrastructure sites .
Add the words the most in
between the word provide, and
cost effective . That will provide
the necessary flexibility .
� PF -P -43 Be�e� Encouraqe the deplovment of Restore original language . The �
broadband to as many areas in the words as possible give the
community and key transportation necessary flexibility to this policy .
corridors as possible and pursue
additional providers to increase
competition and improve quality of
service .
Public Safety
PS -P -6 Prevent and control soil erosion and Restore original language . This is
corresponding landslide risks on public an EIR mitigation measure for
propertv and in coniunction with new Hazards . Preventing soil erosion
private development through hillside and corresponding landslide risk
protection and management . through hillside protection and
management policies should be a
topic covered in the Muni -Codes .
PS -P - 13 As resources become available , reduce Restore original language . This is
the flooding impact of a storm event by a mitigation measure in the EIR
enhancing the city' s green infrastructure and must be expressed as
system to complement the gray mandatory . The practical effect of
infrastructure system where feasible . the added language is that
resources will never become
available .
PS - P - 15 � Ensure Dcrn�a�C adherence to Restore original language . This is
applicable B-ia-►�ae��-�a-� Fire and a mitigation measure in the EIR
Building Codes , including standards for and must be expressed as
minimum road widths , �d-a�f� mandatory . The words ensure
access and clearance for emergency and require are not equivalent .
vehicles , and the identification of all Ensure assigns no specific
roads , streets , and major public
buildings in a manner that is clearly responsibility for the action .
visible to fire protection and other Require demands that action be
emergency vehicles . taken .
PS -G -4 Support the enforcement of applicable Restore original language . This is
local , County , State , and federal a mitigation measure in the EIR
regulations pertaining to the and must be expressed as
manufacture , use , transportation , mandatory .
� storage and disposal of hazardous Moreover , the city must take �
materials and wastes in the City with the responsibility for this action , not
primary focus on preventing injury , loss � ust support other agencies .
of life , and damage to property resulting
from the potential detrimental effects
(short- and long -term ) associated with
the release of such substances .
PS - P -38 Maintain , review , and update Diamond Restore original language . This is
Bar' s Local Hazard Mitigation Plan as a mitigation measure in the EIR
needed to take e�ie�f+��-3f���� and must be expressed as
into account new hazard conditions in mandatory .
the Planning Area and new emergency The phrase as needed is unclear .
management techniques .
What determines the " need " ?
Every 5 years is specific and
measurable , both of which are
essential for implementation policy
language .
PS - P -49 �e Ensure that detailed site - Restore original language . This is
specific noise analysis , including the a mitigation measure in the EIR
identification of noise mitigation and must be expressed as
measures , be prepared for all mandatory . Ensure puts the city
development proposals located where in a passive role when it must be
project noise exposure would be other actively enforcing this policy .
than normally or conditionally
acceptable as specified in Table 7 - 1 .
With mitigation , development should
meet the allowable exterior and interior
noise exposure standards established in
the Noise Control Ordinance .
Community Health & Sustainability
CHPS - P -2 As resources become available and Strike the words as resources
appropriated throuqh the municipal become available and. They are
budqet process , improve signs redundant .
directing residents and visitors to
public parks and recreational facilities Replace with : As resources are .
from all parts of the community . Resources must have become
Integrate parks and recreation available if they have been �
signage with bikeway and pedestrian - appropriated .
oriented signage systems throughout
Diamond Bar .
CHS -P -5 As opportunities and resources This is an EIR mitigation policy
become available , implement street that is mandatory and must
design features that facilitate walking enforceable . We therefore believe
and biking in both new and the original language should
established areas . Require a minimum stand .
standard of these features for all new
developments where appropriate and At the very least , strike the words
feasible . where appropriate and feasible .
A minimum standard of " design
features " for all new developments
will always be appropriate . If new
developments don ' t have the
required minimum standards , they
shouldn ' t be built . Neglecting to
remove that language is
guaranteed to give the Planning
Commission heartburn .
CHS - P - 14 Restore original language . This is
Encouraqe the development of an EIR mitigation policy that must
be expressed as enforceable and
" destinations"—such as the clusters of mandatory .
commercial uses that draw residents
from the entire community into the Allowing revised language to
Neighborhood Mixed Use , the Transit- stand will make the general plan
Oriented Mixed Use , and the Town inconsistent . Remember , this is a
Center focus areas twenty year plan . Eventually , all of
our commercial centers will end
up being Mixed - Use . We must do
more than encourage here .
Creating the appropriate zoning
for these areas will fulfill the intent
of this policy as it will point owners
and developers in the direction the
city must go .
CHS -P - 15 This is an EIR mitigation policy
G � + ohlich „ rn „ �+ , , ,, ; + , o � f� r Encouraqe that needs to be expressed as
the establishment of gathering areas mandatory . Original language is
in new neighborhoods not enforceable .
i
The creation of gathering areas
has been an important theme in
other areas of the general plan .
We want our new neighborhoods
to be pedestrian -friendly ,
gathering places . So making this
policy enforceable keeps it
consistent with other general plan
policies .
Revised policy should read :
" Establish gathering areas in new
neighborhoods . "
CHS -P -23 This policy , as modified , only
Support home gardening efforts by requires the consideration of such
a�e�#�� considerinq a Home a policy . If all we ' re going to do is
Gardening and Urban Agriculture consider creating an ordinance .
Ordinance or otherwise ensuring that then why do we even need this
zoning does not prevent or restrict the policy at all ?
use of residential properties as
vegetable gardens , and provide Beginning of first sentence should
residents with technical assistance read :
opportunities in the form of online and « Support home gardening efforts
libraN resources and workshops on by adopting a Home Gardening . . . "
qardeninq basics and cookinq healthy
meals with fresh producf . The necessary Ordinance can be
easily written using the language
of this policy . "Zoning must not
prevent or restrict the use of
residential properties as vegetable
gardens . " Done .
CHS -P -24 Explore opportunities as thev arise to Restore original language . The
incorporate community gardens into words explore opportunities
City parks and open space areas , and implies opportunities as they
encoura e the Diamond Bar
Community Garden and other arise . If an opportunity has not
organizations to facilitate the yet arisen , how can it be
development , administration , and explored ?
operation of community gardens in the
City .
CHS - P -26 At such time that Citv staffinq Restore original language . The
� resources are available , monitor and word consider gives the policy
maintain data from CaIEPA related to necessary flexibility .
pollution burdens and socioeconomic Are we really saying that we will
vulnerabilities in Diamond Bar , and only monitor CALEPA data on
use the data to consider development pollution when staff becomes
or expansion of programs and
investments to reduce the risks of available ? Making this suggested
disadvantaged communities . change will also make the general
plan inconsistent with the CAP .
CHS - P -27 Recognizing the adverse health Restore original Ianguage . This
impacts associated with compromised must be a mandatory , enforceable
air quality , ensure the protection of EIR mitigation policy .
sensitive receptors from exposure to
hazardous concentrations of air
pollutants when reviewinq
development proposals .
CHS -P -28 Restore original language .
To the extent feasible , manage , Suggested language makes this
enhance , and improve the City's tree policy meaningless and
canopy as a valuable ecological and unenforceable .
public health resource , particularly
adjacent to and within sensitive use
areas located in the Air Quality
Management District (AQMD ) 500 -foot
air quality buffer .
CHS -G - 11 " ^ �'�,� Consider initiatives to Restore original language . This is
enhance sustainability by reducing the a goal . It should be mandatory .
community ' s greenhouse gas ( GHG ) Because if we insert the word
emissions , protecting natural open consider, then we ' ll never do
spaces which provide CO2 anything except consider .
sequestration , and fostering green All of the policies relying upon this
development patterns , buildings , sites , goal would then become
and landscapes .
unnecessary .
CHS - P -33 This is an EIR mitigation which
� Encouraqe land uses to reduce needs to be expressed as
vehicle miles traveled (VMT) , mandatory . Restore original
prioritizing infill development and language .
incorporating vertical and horizontal
mixed - use development , public transit , Planning land uses is the city' s
and active transportation facilities job . Let' s do it . �
where appropriate , recognizing that
the transportation sector is the largest
source of GHG emissions in Diamond
Bar and in California more broadly .
CHS -P -34 Demonstrate City leadership in GHG Restore original language . This is
emission reduction activities by an EIR mitigation which must be
considerinq incentives � expressed as mandatory and
r� roforonno +„ proposals that reduce or enforceable . Leadership is an
minimize GHG production , or provide active role . Placed next to
incentives for selecting climate leadership , the word consider is
friendly , or lower and /or non -emission an obvious contradiction .
producing alternatives .
Besides , shouldn 't giving
preference to proposals that
reduce or minimize GHG
production be mandatory?
CHS - P -35 Use the City' s CAP as the platform Restore original language . This is
when considerinq #e�-eu-�4 �� an EIR mitigation which needs to
imr� lomori4inn measures to improve be expressed as enforceable and
energy conservation and increase mandatory .
renewable energy use in existing and Again , this should be mandatory
new development anyway . If all we ' re going to do is
consider , why have a policy at all ?
CHS -P -36 Support and cooperate S:e�labe�a�e Restore original language . This is
with local , regional , State , and federal an EIR mitigation which must be
agencies on the monitoring and expressed as mandatory .
evaluation of energy resources as well Besides , this policy has been in
as the identification of energy-efficient the general plan for the last twenty
and alternative energy technologies years without any legal
and practices . challenges . We believe it will
remain in this version for another
twenty years without challenges .
CHS -P -37 As opportunities arise , work with Restore original language . This
appropriate federal , State , and private policy has also been in the
utility agencies to identify and facilitate general plan for the last twenty
utility rate revisions that would provide years without any challenges . We
incentives for the conservation of believe it will also remain in this
energy . version for another twenty years
without challenges .
� �
CHS - P -39 Accelerate Consider the adoption of Restore original language . This is
rooftop and parking lot solar power an EIR mitigation which needs to
and /or other alternative energy usage be expressed as mandatory and
on developed sites in Diamond Bar enforceable .
through actions such as : Solar energy will only become
a . Establishing incremental more important as the years pass
growth goals for solar in this twenty-year plan .
power/alternative energy Circumstances will require us to
systems in Diamond Bar ; much more than the mental
b . Developing guidelines , exercise of considering.
recommendations , and
examples for cost-effective Necessary flexibility is achieved
solar and/or other alternative by the words such as .
energy-based installation ; and
c . Installing solar/alternative
energy technology on �e
existin Cit facilities
CHS -P -45 Support and cooperate Se44abe�a-�e Restore original language .
with the Walnut Valley Water District , Collaborate is a common word
the Los Angeles County Public Works used in this context in other cities '
Department , and the Los Angeles general plans .
County Sanitation District in
community education efforts to reduce If "flexibility" is that badly desired ,
the consumption of carbon - based considered following language
fuels for conveyance and treatment of change to first sentence :
water and wastewater . " Collaborate as much as
reasonably possible with the
Walnut Valley Water District . . . "
CHS - P -53 Support and cooperate with CountV Restore original language . This is
and State requlatory aqencv efforts to already " require " in the existing
require commercial and industrial General Plan .
generators to develop and implement Why would we deregulate what
a source reduction and recycling plan
tailored to their individual waste We are already regulating ?
streams . This policy has been in the
general plan for the last twenty
years without any challenges . We
believe it will also remain in this
version for another twenty years
without challenges .
Moreover, this is also a mandatory
EIR mitigation policy that must be
expressed as mandatory and
enforceable .
CHS -P -55 Encouraqe the protection �'-r�s� and Restore original language .
enhancement of areas identified as Proposed language is inconsistent
healthy functioning ecosystems that with and undermines other
provide the ecological , cultural , public resource conservation goals and
health and safety , and economic value policies . .
of ecosystem services , or benefits . The word encourage is passive . It
does not protect anything . Using
it here makes the policy
meaningless .
CHS -P -59 As resources become available , Restore original language .
increase the efficiency of water usage Remember , this is a twenty-year
in public places , such as irrigation in plan .
public parks , and utilize drought-
tolerant landscaping in City parks and Over time , resources wi11 become
streetscapes . available and water shortages will
demand this be done .
Respectfully submitted for the public record by Responsible Land Use
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Diamond Bar General Plan 2040 � COMMUNITY HEALTH AND SUSTAINABILlTY 8 - 19
' _ i
-�._ � `'
Cooper Ecological Monitoring, Inc .
(323� 397-3562 (mobile� unvw. coopeiecological. com
1 �
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Biological Resources of
22354 Kicking Horse Drive
Diamond Bar , CA 91765
D RAFT
Prepared for:
Hanson and �nnie Yu
22354 Kicking Harse Dr.
Diamond Bar, Cr1 91765
Prepared by:
Daniel S . Cooper
Coopex Ecologicall�Ionitoring, Inc.
255 Satinwood <-1ve .
Oak Pazk, Ct1 91377
dan@cooperecological. com
Report Date : January 10, 2018
Table of Contents
INTRODUCTION 3
PROPERT'Y DEscRrnTioN 3
B�� CKGROUND 3
TOPOG1tAPIIY AND VEGETATION 4
FINDINGS 5
i FLOR� �ND FAUN� 5 E
SENSITI�'E SPECIES 5
WILDLIFE MOVEMENT g
IMPACT ANALYSIS 9
SENSITI�'E SPECIES /WILDLIFE 9
NESTING BIRDS 9
JURISDICTIONr�L WETLt1NDS r1ND Wr1TERS 9
O�KS /Nl',TIVE TREES 9
REFERENCES 11
APPENDICES 12
.-1PPENDIY 1-� : 1�Ir1PS AND PIIOTOGRt1PHS 13
r1PPENDIX B : CV I�OR DANIEL S . COOPER 29
Cooper Ecological n�ionitoring, Inc . �
Site : 22354 Kicking Horse Dr.
Introduction
Pro� erty Descri� tion
The subject property (22354 Kicl�ing Horse Dr. , Diamond Bar, CA) covers 2 . 58 acres ' in the
middle portion of the Tonner Canyon Watershed . It is surrounded by privately-owned open
space to the west, south and east that is currently (2018) being converted residential
� development ("Millennium" project) . E
The eastern portion of the property extends down to a creek bottom, and just beyond that, a
dirt access road currendy being used by the developers of the Millennium project (Figure 2) .
The eastern boundary of the subject property roughly runs down the middle of this dirt
access road . On 26 -27 December 2017 , a portion of the oak woodland on the subject
property was bulldozed by a contractor working on the Millennium project (A . Yu, pers .
comm.) , which resulted in the loss of several mature oaks and degradation of the site' s
natural resources (Figures 1a, 1b) .
Background
The "Millennium" project has proposed 48 single- family homes built on 80 acres within The
Country (a gated community) of Diamond Bar, located in the Tonner Canyon watershed at
the southern end of Alamo Heights Dr. Land clearing/ grading for the project began some
time between April and October 2007 , with vegetation removed along the ridge west of the
subject pioperty (all timeline statements herein from analysis of Google Earth imagery) . By
July 2008 , clearing had extended east down the slope west of the main drainage on which the
subject property is located . By June 2009 , large areas of hillsides �uithin the project had been
cleared of all vegetation , but ��ork apparendy ceased in 2010 .
Between March 2011 -March 2013 , a " square" at the end of tllamo Heights Dr . was graded,
and by Apri12013 , clearing work had resumed on the ridgeline ��est of the drainage .
Subsequent to October 2016 , this latest round of vegetation removal commenced , which
roughly followed the footprint of the initial major work done in 2008 / 09 .
Several years ago (dates uncertain) , the city of Diamond Bar reportedly encouraged the
developer of Millennium to work with neighbors to acquire easements on private parcels
along the western edge of the project to accommodate construction of a retaining wall,
access road, and other features . While some of the neighbors took the offer and granted
easements , the owners of the subject property did not (A . Yu, pexs . comm.) .
We (Cooper Ecological Monitoring, Inc .) were contacted about this situation by the
homeowner, who requested that a biological survey be conducted to assess the damage . I
(Dan Cooper) visited the subject properry on 6 January 2018 for reconnaissance purposes ,
� Figure xefers to "gross acxes" on Txact 1�Iap No . 32482; net acres listed as 1 . 92.
Cooper Ecological Ivlonitoring, Inc . 3
Site : 22354 Kicking Horse Dr .
and took notes and photographs of the dainage .
To� ogra� hy and Vegetation
The subject property is situated between 900 and 1120 feet a . s . l. , and includes portions of an
east- facing slope and a canyon bottom, the latter including part of a stream that flows south
B into Tonner Canyon . The soil along the creek and on adjacent slopes is largely clay (Apollo - �
Calleguas complex) '`. The drainage appaiently supports permanent Elow (observed flowing
during my site visit) , which is undoubtedly augmented by urban runoff from development
within The Country to the north .
Vegetation in the focal area of the property (where vegetation and soil was impacted)
consists of oak woodland, strongly dominated by coast live oak ( Quercus agrifolia) , with
scatteYed individuals of other tree species (incl. southern California black walnut Juglcrns
cqlifornica) . The understory is sparse, with widely scattered shrubs such as toyon (Heterornele.r
arbutifolia) and scrub oak (��lercus berbe�zdifolia) , and a dense layer of leaf litter covers the
woodland floor . The creekbed featured riparian species such as arroyo �villow (Sqlix laevigata)
and, just downstream of the subject property, a dense growth of cattail (Typha sp .) where
water collects and stream flow is slower . The surrounding slopes to the west feature a mix
of coastal sage scrub (including purple sage Salvia leucophylla) and annual grassland / forbs .
The dirt access road is highly disturbed, as are slopes to the east where recent grading has
occurred; here, non-native species dominate , including Russian thisde (Salsola au.rtrali.r) .
In addition to the intact habitat, a large area of piled-up oak trees (trunks and boughs intact)
was observed along the western side of the dirt access road through the subject property .
Based on aerial imagery (Google Earth) , an inspection of the site , and via conversations with
the property owners , these trees undoubtedly caine from the subject property, and not
elsewhere on the Millennium project area (Figure 3) .
2 https : / / casoilxesource .lawr.ucdavis . edu/gmap /
Coopet Ecological l��Ionitoring, Inc . 4
Site : 22354 Kiclung Hoise Dr .
Findings
Flora and Fauna
Tonner Canyon is an exceptionally rich area for wildlife . During surveys of the Puente-
Chino Hills in 1997 - 1998 , I (Cooper) detected essentially every breeding bird species known
a from the ent'tre range (from Yorba Linda to Whittier) within some portion of Tonner �
- Canyon . -
The vegetation on the subject property appears to be of high ecological integrity, with a
relatively low representation by non-native species . While several non-native plant species
were found in the creekbed (including fan palm 1Y/a.rhiiagtonia sp .) and on slopes that are
actively being disturbed (i. e . , through grading� , the oak woodland in and around the subject
property appears litde- disturbed, and was found to suppoxt several oak/ native woodland
indicator species�, including western gray squirrel (Sciurusgri.reu.r; Figures 4a and 4b) , red-
shouldered hawk (BT�rteo lilzeari.r; Figure 5) , and western screech-owl (Megasco�.c ,�ennicottii;
Figure 6� .
The riparian vegetation at the area is mainly located downstream/ south of tke subject
property, but was also found to be ecologically intact, with several riparian/wetland indicator
birds noted during my site visit (including marsh wren Cie�tothorzi.r pal�dicola and Common
Yellowthroat Geothlypi.r tricha.r) heard calling from the wedand area just south of the subject
property) .
SeriSltlVe S� eC1eS
Table presents species with the potential to occur in the vicinity of Kicking Horse
Dr. / Diamond Bar, and notes on their likelihood of occurrence . Based on our analysis , the
subject property currendy supports one special- status plant species (southern California
black walnut; Figure 7) as well as a sensitive vegetation community, Southern Coast Live
Oak Riparian Forest; Figure 8� .
Substantial wetland and ��illow riparian habitat, typically also considered sensitive (including
potentially Southern Willow Sctub , was observed directly south of the subject property, but
was not surveyed .
In addition, the subject property (and/ or the adjacent habitat) has the high potential to
support the following birds : Cooper' s hawk, golden eagle, white- tailed l�ite, southern
California rufous - crowned sparrow, yellow warbler, yellow-breasted chat, least Bell' s vireo,
and (at least formerly) long- eared owl (eBird, Cooper 2000) .
j Scott, T.�� . and D . S . Cooper. 1999 . Summary of avian resources of the Puente-Chino Hills Coxridoi. January,
1999 . 1lvailable (Online) : http : / /www.hillsforeveryone. org/ ; Coopex, D . S . 2000 . Breeding landbirds of a
highly-threatened open space: The Puente-Chino Hills , California . Westexn Birds 31213 -234.
� rlppendix 7 . "Common and chaxactetistic oak woodland species of Los ringeles County, California" . In Los
ringeles County Oali Woodlands Conservation Management Plan . Prepared by the Los ringeles County Oak
Woodlands Habitat Conservation Strategic �lliance . Map 2011 .
Cooper Ecological Ivlonitoring, Inc . 5
Site : 22354 Kicking Horse Dr.
It also has the potential to support the following reptiles and amphibians (see links for local
records) : San Bernardino ringneck snake (�vw`v.inaturalistorg/ observations / 1675890) ,
western pond tuxde (known from Brea Canyon, probably upper Tonner Canyon; R. Fisher,
pers . comm.) , coast horned lizard (www. inaturalist. org/ observations / 7443777) , coastal
whiptail (www. inaturalist. org/ observations / 1706912, and red diamond rattlesnake
(ww�v. inaturalis t. org/ ob s ervations / 6937819) .
Sensitive plants with the potential to occur include Robinson' s peppergrass
� (https : / /www. inaturalist. org/ observations / 9014758) , Catalina mariposa lily �
(https : / /www. inaturalist. org/ observations / 9414511 ) and Weed' s mariposa lily.
In addition to these species , two southern California shoulderband snails (Helmintho�pta
tudiculatcr) were discovered, one under a fallen oak limb , and the other on an oak trunk that
had been bulldozed and was lying on its side on the subject property (Figure 9) . While this
particular species of shoulderband is not considered a Special Animal, many others in this
genus are so considered, and the taxonomy of this group is still being worked out.
Therefore, any shoulderband at a site should be considered a significant natural element.
Table 1 . Sensitive species �vith potential to occur at subject propert�� (22354 Kicl�ing Horse
D Y .� .
Federal CDFW
Type Scientific Name Common Name Status Status Notes
Birds
Bxeeding resident in
��cci iter coopexu Cooper s hawk None WL axea
rlcci iter striatus shaL -shinned hawk None WL Winter onl
Potential breeding
rlquila chxysaetos golden eagle None FP , WL iesident in area
Potential breeding
xesident in
extensive grassland
in area (certain
Circus cyaneus northern harxier None SSC yeais)
Breeding Yesident in
Elanus leucurus white-tailed kite None FP axea (cextain yeaxs)
Potential bteeding
xesidentin
Exemophila alpestris actia Califoxnia horned laxk None WL extensive gxassland
Chaetuxa vauxi Vaux's swift None SSC Txansient ovexhead
southexn California
r',imophila xuficeps xufous -cxowned Bieeding resident in
canescens sparrow None WL axea
Potential breeding
residentin
extensive grassland
�lmmodramus savannaxum grasshoppex spaxrow None SSC (cextain years)
Potential breeding
E xesidentin
(Cand.) , wetland/grassland
rlgelaius tricolor tricoloxed blackbird None SSC habitat in axea
Cooper Ecological Alonitoring, Inc . �
Site : 22354 Kicking Horse Dr.
Bxeeding resident in
Lanius ludovicianus loggexhead shxike None SSC area
Icteria vixens yellow-breasted chat None SSC Bxeeds in area
Setophaga petechia yellow waxbler None SSC Bxeeds in area
double- cxested
Phalacrocorax auxitus coxmorant None WL Txansient ovexhead
Latexallus jamaicensis
cotuxniculus Califotnia black rail None T, FP Listed in exxor
Formerly a breeding
Asio otus long-eared owl None SSC xesident �
Breeding resident in
Polioptila califoxnica coastal California extensive coastal
californica natcatchex Thxeatened SSC sa e scxub in axea
Campylorhj�nchus Breeding xesident in
brunneicapillus extensive cactus
sandiegensis coastal cactus �vxen None SSC area
Breeding xesident in
Viieo bellii usillus least Bell' s vireo Endangexed E area
Insects
Bombus crotchu Cxotch bumble bee None - Unk.
Mammals
Eumops perotis
californicus westexn mastiff bat None SSC Unk.
Reptiles /Amphibians
Diadophis punctatus San Bexnardino
modestus xingneck snake None - Pxesumed resident
Salvadoxa hexalepis coast patch-nosed Potentially out of
virgultea snake None SSC Lange
Em s maxmorata westein ond turtle None SSC Resident in area
Phrynosoma blainvillii coast horned lizaxd None SSC Resident in area
Aspidoscelis tigris
stejnegeri coastal �vhiptail None SSC Resident in area
xed -diamond
Crotalus xubex xatdesnake None SSC Resident in area
Natuxal Communities
California Walnut CaliFoinia ��/alnut rldjacent to subject
Woodland Woodland None - pxoperty
Southexn Coast Live Oak Southexn Coast Live
Riparian Foxest Oak RipaLian Foxest None - PRESENT
Southern Willow rldjacent to subject
Southexn Willow Scrub Scxub None - propexty
Plants
Lepidium virginicum vax. Robinson' s peppeY-
robinsonu grass None 4. 3 Pxobably in area
tiiple-ribbed milk-
�1stLagalus tricarinatus vetch Endangered 1B . 2 Listed in exror
Quercus dumosa Nuttall' s scrub oak None 1B . 1 Listed in erroi
Quercus engelmannu Engelmann oak None 4.2 Pxobably in area
Phacelia hubbyi Hubbp' s phacelia None 4. 2 Piobably in area
southern California
Juglans californica Ulacic walnut None 4. 2 PRESENT
Cooper Ecological n�Ionitoring, Inc . ']
Site : 22354 Kicking Horse Dr.
Calochortus catalinae Catalina mariposa-lily None 4.2 Piobably in area
Calochortus weedu var. intermediate
intermedius mariposa-lily None 1B . 2 Probably in area
Coulter' s matilija
Romneya coulteri o y None 4. 2 Listed in erxor
Eiiastrum densifolium ssp . Santa rina River
sanctoxum woollystax Endangered E, 1B . 1 Not in area
A Wildlife Movement �
Due to its location within a canyon bottom adjacent to a much larger expanse of open space,
the vicinity of the subject property is certainly used by large and mid- sized mammals moving
back and forth between Tonner Canyon and the surrounding oak and walnut `voodland on
the slopes to the north . Neither the species involved nor magnitude of this movement has
not been quanrified, but likely include mountain lion (Feli.r concolor) , mule deer ( Odecoile�.r
hemionu.r) , bobcat (Lynx rrrfus) and coyote (Cqni.r latrala.r) .
Cooper Ecological Ivionitoring, Inc . $
Site : 22354 Kicking Hoxse Dr.
Impact Analysis
Sensitive S� ecies / Wildlife
The recent clearing of oak woodland, including coast live oak ripaYian forest, at the site , has
impacted habitat for the southern California shoulderband snail as well as suitable nesting
habitat for Cooper' s hawk and (should it still persist locally) long- eared owl. San Bernardino
� ringneck snake and coastal whiptail would also be expected to occur in this habitat type, and �
thus should be considered 'unpacted .
The clearing has also reduced habitat available for native wildlife that depend on this habitat,
including the native western gray squirrel and the western screech- o��l . Tonner Canyon
supports one of the few Yemaining lo�vland populations of western gray squirrel in the Los
Angeles -Orange Count�� areas , and a likely nest was observed on the subject property (Figure
5b) .
Clearing along the streambed will likely result in increased silting/ degradation of this
tributary to Tonner Canyon, which could impact sensitive aquatic species not observed on
the site, but known offsite, such as western pond turde .
Nesting Birds
Given that the habitat loss occurred in late December, very few, if any, birds would be
expected to have been nesting in this habitat at this time of year.
Jurisdictional Wetlands and Waters
Due to its depiction as a "blue-line stream" on the Yorba Linda USGS quad (as well as its
topography, permanent flow, and direct connection to Tonner Canyon) , this tributary would
be considered "jurisdictional" water (Figuxe 10) . Therefore, any ��ork directly along the
streams , including clearing or modification of the roadbed at the stream crossing adjacent to
the subject property, would have required additional permits from the California
Department of Fish and Wildlife and/ or other agencies .
Oaks / Native Trees
While there are no federal or statewide regulations for managing oaks or most native trees ,
local jurisdictions , such as cities and counties , have developed their own, often to comply
with statewide guidelines . In the case of Diamond Bar, the city' s municipal code identifies
native oak, walnut, sycamore and `villow trees with DBH > 8 " as "protected" (Sec . 22 . 38 . 30)
Based on our site visit in which I observed multiple uprooted/ bulldozed mature coast live
5 Cooper, D . S . and r1 . Niuchlinski. 2015 . Recent decline of lowland populations of the westezn gray squixrel in
the Los ringeles axea of southexn Califoxnia . Bulletin of the Southern Califoinia 1-�cademy of Sciences . 114 :42-
53 .
Cooper Ecological A�Ionitoring, Inc . �
Site: 22354 Kicl�ing Horse Dx .
oak trees piled on the ground within a bulldozed area (recently-disturbed earth) , I estitnate
nine (9) trees with DBH > 20" , and three (3) trees with DBH > 30" , for a total of twelve (12)
protected trees . At least one was large enough to likely qualify as a "heritage" tree in many
jurisdictions ` (Figure 11 ) . All trees removed appeared to be in relatively healthy condition
(to be confirmed with tree report) . Assuming a valuation at roughly � 50 ,000 / tree (exact
figure would need to be confirmed with a certified arborist) , the value of these trees could be
$ 600 ,000 . 00 if not more .
� An additional number of trees still left on the subject property were potentially unpacted due
to encroachment by earth-moving machines (Figure 12) , which could potentially increase the
valuation of the damage incuYred.
As stated in Sec . 22 . 38 . 040 , "excepted as provided in section 22 . 38 . 060 (Exemptions) , no
person shall cut, prune, remove , relocate, or otherwise destroy a protected tree . " A review
of exemptions (including public safety, tree health, and trees on small lots) indicate that no
exemptions would apply in this case .
It is not known whether the project proponent (Millennium) obtained a tree removal permit
for the trees in question, as would be required under Sec. 22 . 38 . 080 . The permit must be
exexcised within one year from the date of approval, or be extended by the city (Sec .
22 . 38 . 150) .
In the case of a large property (> 20 ,000 s . £) , removed/ damaged trees would be replaced at a
3 : 1 ratio , with box size determined by the city (Sec . 22 . 38 . 130) .
Under Sec . 22 . 38 . 140 , the remaining trees at the site should have been protected from the
tree-removal activity that occurred in late December 2017 (method TBD at the discretion of
the city) . These must include the installation of a 5 ' chainlink fence or similar barrier, the
installation of a barrier at least five feet outside the drip line of the trees to be protected, the
installation of a 6 " mulch bed �uithin the drip line , etc . It also stipulates that trees that have
been destroyed be replaced "prior to final inspection" .
In the case of the subject property, no protective fencing was observed, though a single
stYand of caution tape suspended by wooden stakes may have been installed to mark the
edge of the work area (Figure 13) .
Notably, the fence and stakes installed by the property owners at 22354 Kicl�ing Horse Dr.
were apparently destroyed by the grading contractor during the tree removal in late
December 2017 (Figure 14) .
� i1�Iany cities have included a designation for the very largest/ oldest trees , termed "heritage trees " (e . g. ,
"heYitage oak") , typically reseived fox those gxeatex than 36 " DBH . Diamond Bar apparently has no such
designation in its municipal code .
Cooper Ecological l�ionitoring, Inc . 10
Site : 22354 Kicking Horse Dr.
References
r1IS and ESRI 2007 . USGS -NPS Vegetation mapping program . Santa l�Ionica Mountains National
Recreation 1�rea, Photo Intexpxetation Report (Final) . I�1ay 23 , 2007 . Prepared for Santa Monica
11�Iountains NR�1, Thousand Oaks , Cr1 , b5� r�erial Information Systems , Inc . and Environmental
Systems Research Institute, Redlands , CA .
� Beaudette, D . E . and � .T . O ' Geen. 2010 . Online Soil Survey. California Soil Resources Lab , Univ. of �
California, Davis . �vailable online at: http : / / casoilresource . lawr. ucdavis . edu/ drupal/ node / 27 -
California Department of Fish and Wildlife (CDF� . 2014 . BIOS viezver v. 5. 23. 06a. California Natuxal
Diversit�� Database . CDFW. Sacramento , C1-� .
California Department of Fish and Wildlife (CDFVt� , Natural Diversiry Database (CNDDB) . 2014a .
Special �nimals List. September 2014 . Periodic publication . 52 pp .
California Department of Fish and Wildlife (CDFV� , Natural Divexsity Database (CNDDB) . 2014b .
Special �' asculax Plants , Br��ophytes , and Lichens List. Octobex 2014 . Quaxtexly publication . 125
pp �
California Department of Fish and Game (CDFG) . 2010 . Natural Communities List. September
2010 . Available at: http : / /�vww. dfg. ca . gov/ biogeodata /vegcamp / natural_communities . asp
Califoxnia Native Plant Society (CNPS) . CNPS , Rare Plant Program . 2015 . Inventoiy of Rare and
Endangered Plants (online edition, v8-02) . Califoxnia Native Plant Society, Sacxamento, Cr1 .
, �vailable at: http : / /www. rareplants . cnps . org
Califoxnia, State of. Fifh an�l Game Code. Sacxamento , C� .
http : / /www. leginfo . ca . gov / . html/ fgc_table_of contents . html
Consortium of California Herbaria. Available online at: http : / / ucjeps . berkeley. edu/ consortium /
Cooper, D . S . and R.� . Hamilton . 2014 . r� Conservation rinalysis fox the Santa Monica IVlountains
"Coastal Zone" in Los r�ngeles County. Pxepaxed fox the Dept. of Regional Planning, Los
� �ngeles County. January 3 , 2014 . .�vailable : http : / / filelacounty. gov/bos / supdocs / 82928 . pdf
Sawyer, ] . 0 . , T. Keeler-Wolf, J . M . Evens . 2009 . �� Manual of California Vegetation, 2n� Ed .
California Native Plant Society Press , Sacramento .
Southern Califoxnia Topo Maps and Topographic Nlap Data fox Southern California . Electronic
database . rlvailable online at: http : / /�vww . txails . com / topo . aspx? state = CS
Swift, C . C . , T. R. Haglund, I�I . Ruiz, and R.N . Fisher. 1993 . The status and distribution of the
freshwater fishes of southern California . Bull. Southern California rlcad . Sci. 92 (3) : 101 - 167 .
U . S . Fish and Wildlife Service 1997 .
National Wetlands Inventoxy, Octobex 1997 . U . S . Fish and Wildlife Service.
Cooper Ecological Ivlonitoring, Inc . 11
Site : 22354 Kicking Hoxse Dr.
Appendices
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Coopex Ecological n�Ionitoxing, Inc . 12
Site : 22354 Kicl�ing Horse Dr.
Appendix A . Maps and Photographs
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Figure 1 a. Location of subject pioperty (yellow polygon) , with Kicking Horse Dr. at upper left corner
of propexry, and dixt access road along eastern border (red arxow) .
Cooper Ecological IVlonitoxing, Inc . 13
Site : 22354 Kicking Horse Dr.
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Figure 1b . rlpproxunate area of recent (late Dec . 2017) clearing that unpacted pioperty at 22354
Kicking Horse Dr . (red shading) .
Cooper Ecological Monitoring, Inc . 14
Site : 22354 Kicl�ing Horse Dr .
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Figure 2 . �lccess road leading south into the Millennium pxoject site fxom the south end of �lamo
Heights Di. , Diamond Bax. Ph. 6 Januarp 2018 .
Cooper Ecological l�fonitoring, Inc . 15
Site : 22354 Kicl�ing Horse Dr .
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Figure 3 . �rea of iecent (late December 2017) clearing, sho�ving 10 + mature coast live oaks
bulldozed and left in place . Ph . 6 Januar3� 2018 .
Cooper Ecological Monitoring, Inc . 16
Site : 22354 Kicking Horse Dr.
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Figuxe 4a . Western gxa}� squ�xel (native tree squirrel) photogxaphed 6 January 2018 at end of Kicking
Horse Dr.
Cooper Ecological Monitoring, Inc . 1 �
Site : 22354 Kiclung Horse Dr .
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Figure 4b . Likely western gray squirxel nest in coast live oak on subject propeity adjacent to
bulldozed area , 6 January 2018 .
Cooper Ecological 1�Ionitoring, Inc . 18
Site : 22354 Kicking Horse Dr.
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Figure 5 . Tail feather of Red- shouldered Hawk on subject property within area proposed For clearing,
6 January 2018 .
Cooper Ecological Monitoring, Inc. 1 �
Site : 22354 Kicking Horse Dr .
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Figure 6 . Copious whitewash, likely fxom western scxeech-owl ox another raptor, adjacent to axea
proposed fox clearing, 6 January 2018 .
Cooper Ecological IVlonitoring, Inc . 20
Site : 22354 Kiclung Horse Dx.
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Figure 7 . Mature southern California black �valnut within area proposed for bulldozing, 6 January
2018 .
Cooper Ecological Monitoring, Inc . 21
Site : 22354 Kiclung Horse Dr.
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Figure 8 . Typical view of drainage supporting Southern Coast Live Oak Riparian Foxest. Invasive fan
palms also visible, but not widespread . Ph. 6 January 2018 .
Cooper Ecological l�ionitoring, Inc . 22
Site : 22354 Kicking Horse Dr.
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Figure 9 . Southern CaliFornia shoulderband snail (Helmintho��ta tudiculata) , observed on oak tree that
had been uprooted /bulldozed and left on site . Ph . 6 JanuaLy 2018 .
Coopex Ecological A�Ionitoring, Inc . 23
Site : 22354 Kicking Horse Dr.
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Figure 10 . USGS topographical map (Yorba Linda) , showing blue-line stxeam through subject
properry (red arrow) .
Cooper Ecological Monitoring, Inc . 24
Site : 22354 Kicldng Horse Dr.
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Figure 11 . Very large coast live oak removed by late Dec . 2017 bulldozing (clipboard for scale) . Ph . 6
January 2018 .
Cooper Ecological Monitoring, Inc . 25
Site : 22354 Kicl�ing Horse Dx.
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Figure 12 . Observed encxoachment into dxipline of multiple mature coast live oaks on subject
property . Ph . 6 January 2018 .
CoopeY Ecological Monitoring, Inc . 2�
Site : 22354 Kicking Horse Dr.
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Figure 13 . Inadequate protection for xemaining oaks not to be disturbed (yellow caution tape ; should
be 5 ' chainlink fence or sunilai) . Ph . 6 January 2018 .
Cooper Ecological l�ionitoring, Inc . 2']
Site : 22354 Kicking Horse Dr.
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Figure 14. Damaged fencing that had been installed on piivate (non-project) propert�� by landownex
at 22354 Kicking Horse Dr. Ph . 6 January 2018 .
Cooper Ecological D�Ionitoring, Inc . 28
Site : 22354 Kicking Horse Dr.
Appendix B . CV for Daniel S . Cooper
Daniel S . Cooper
ContaCt InfOrnlatlon Prerldent, CoofierEcologicalNlonitori�tg, Inc.
Coopcc Ecological Moniroring, Inc.
2i� Satimvood Ave.
� Oak Pack, CA 91377 E
Cell: 32339735G2 Overview
I' maiL dan@coopemcobgtcaLcom Uaniel S. Cooper is tlie audior of Importnnt Bird Aieas of
\\�ebsite: w���v.coopemcological.com California (Audubon Califoenia 2004) , aad is an authocitp
o�t California bird ecologp, identiFication and distribution.
I-le also has a strong background in California naniral
Areas of Expertise
historp, a��d has desi}nied and managcd numerous
monrtonng projects and assessments Eor a �vide eanety of
• Projec[ Manage�ient clients. He is a boai�d member oF the Southern Califocnia
• Em�ironmental Compliancc (CEQA/NFPA) and Academp of Sciences, ai�d lias recend}' scrved on thc
bloniroring Sensitiae ll>neironmental Amas Technical Advisory
• Bird and \\'ildlife Suive}'s Coinmittcc (SEA"1'AC) for the Los Angcles County Dept.
• Biological Assessments oE Regional Planning.
• Prorocol Sumcys for die Califurnia Gnatcatchez and othec
special-scams bii�d species Seleeted Experienee
Years of Experience GriFfith Park Natural History Survey/Postfire Bio-
� C�M, Inc. : 9 years �noniroring. Rescarched and co-authored CGriffid� Pa��k
Auduban California: i }�ears \C%ildlife Nfnnagement Plan. Supervised de��elopment of
websim (�vww.griffithparkwildlifeorg; �vith Cutifact, Inc.).
Developed firs'Feaer scudy of �vildlife oF Griffi[h Park,
E(IIICdtIOn focusing on tl�e 2007 bucn arca, including pinnts,
I3A/ 1 )) 5/Harvaed Univecsiq� bceedii�g/winrering biids, ceptiles/amphibians, and bats
NISc (Bio�reogcaph}')/ 1999/UC Ricei�side
(on�oin� .
Cextlflcatlon Santa Monica Mountains LCP update, Los Angeles Co.
U .S. Fis6 and \\'ildlife Pecmi[ No. Tr- 700008- 1 (Daniel S. V✓orking with Coun[y Uepactment of Rejnonal Planning to
Coopee, petmittec: Califomia Gnatcatchec, South�cestecn inventoi�y and map biodiversity ho[spots in central Santa
\\'illow Flpcatcher). Monica ndountains, and to pzovide cecommendations for
CDFG ScientiFic Collecting Permit SG10G15 (Daniel S. tlieic Local Coastal Plan for unuicocpoxated countp lands
Cooper, permitree: CaliEoi�aia Gnatcatcher, So�thwestern north of Malibu (2012-201d).
\\'illow Flycatehcr, San Dicgo Cactus \C'een)
USGS Master Station Banding Pe��mit #230-19 (2001 -200�) Baseline Bird Survey, Ballona Wedands , Los Ange(es.
Desibmed, ocganized and caeried-out fizst majoe all-bicd
Boards sun eq of entire Ballona \C'etlands �cological Resen•e and
Southcru California Acndemy of Sciences, 2012 - rresent adjacei�[ I;tnds For Santa Monica Bay; cooxdinared protocol-
Los Ange]es Co. Dept. of Regional Planning - Sensitive �«'�� and volunteer-led sun�eys for se�sitive species,
Environmental Areas 'I'AC, 2009 - 201 �. waterbirds, captors, and breeding songbirds of die i00-acre
Los Angcles Dept. of Recreation and Parks - GrifFith Park site (2009-2012).
Postfice Recoeery, l'eam, 2007-2008.
Califomia Dept. of \\'ater Resources - Salton Sea Restoracion Selected Publications
Ad��is-ory Commit[ce, 2003 - 2005 . -
CaliEornia Parmci�s-in-Flight - I �:cea�tive Steering Committee, Cooper, D.S. , R.A. I-iamilton, and S. Lucas. 201 ^_. A
Zpp3 _ Z��pg, populazion census of tlie cacrus wren CunipylorG��urLu.r
Los Angeles and Sui Gabeiel Rivexs and Mouncains Gmuueimpi(6u in coastal Los Angeles Counq�. \\'estem
Conscmancy - "Cechnical Adaisuiy Board, 2002 - 200i 33irds 43 (3): 151 - 1G3 .
I�nends of tlie Los Angeles River - Technical Advisory 13oazd, Loo er, D.S. 20L2. Rarc 11nts of CriFfitli P2rlc, Los
� 1 )8') - 2001 . Angeles, Califomia. �remontia 38(4)/39(1 ): 18-24.
2008. The use of llistocical data i� die
ccsto�2tion of tlie aviEnuna of the IIallona \V�etlands,
I,os Angcles County, CaliEornia. Namral Arcas Juurnal
28:83 -90.
2000. Bcecding ]andbirds of a l�igl�l}'
threatened open space: The Puente-Chino Hills,
Califomia. lC'estem Birds 31 :213-234.
I
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��� � ��- 1 � INFORM GOVERNMENTAL DECISION - MAKERS AND THE PUBLIC
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DIAMOND BAR INVOLVED .
GENERAL PLAN 2040 & CLIMATE ACTION PLAN 2040
DRAFT ENVIRONMENTAL IMPACT , REPORT
SCH # 2018051066 � SEPTEMBER 2019 ( California State CEQA Guidelines Section 15002 )
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CH # 20180510 6E � EPT MBER2019RT GENERAL PLAN / CAP OVER A 20 - YEAR TIMEFRA
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D RA FT E I R
• - UBLIC REVIEW PERIOD : SEPTEMBER 16 , 2019 TO OCTOBER 31 , 2019
45 DA Y P
FINAL EIR CONTENTS
• DRAFT EIR
• COMMENTS AND RESPONSES TO THE DRAFT EIR
ADDITIONAL DOCUMENTS
• MITIGATION MONITORING AND REPORTING PROGRAM
• FINDINGS OF FACT
DIAMOND BAR
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• STATEMENT OF OVERRIDING CONSIDERATIONS
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PLANNING COMMISSION HEARING
• FIN/� L EIR WILL BE ADVERTISED AND AVAILABLE FOR PUBLIC REVIEW 10 D
A YS
PRIOR TO THE PLANNING COMMISSION HEARING
m PLANNING COMMISSION WILL fViAKE RECOMMENDATIONS TO THE CITY
COUNCIL WHETHER TO CERTI FY THE FINAL EI R , AND ADOPT THE GENER
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CITY COUNCIL HEARING
• CERTI FI CA TION OF THE FI NAL EIR
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5 . 1 INTRODUCTION
Maintaining these and other cultural resources will play a part
important resources such as in establishing its identity. This
water and air quality is key to Resource Conservation Chapter
� ensuring both that the community provides policies to guide the
' remains livable and the ecosystem City ' s stewardship of its resources , �
remains healthy, particularly in the ensuring the conservation and
increasingly urbanized Southern enhancement of open spaces ,
California region . Additionally, biological resources , water and air
in a young city like Diamond quality, and cultural resources .
Bar, identifying and highlighting
� � Il, f� [i I! ��� f��9 �� f� � lu' i� c';::� S, u � 'ii � �, ;\ 1�!r
California Government Code recognize that open space land is a
sections 65302 ( d ) ( 1 ) and 65302 ( e ) limited and valuable resource and
require cities to adopt conservation prepare and carry out open space
and open space elements as plans that guide the comprehensive
part of their general plans . A long - range preservation and
conservation element is required conservation of open space land .
to provide guidance for the The Resource Conservation Chapter
conservation , development , and is a combination of these two
utilization of natural resources , required elements , as several of
including water quality and the issues addressed under each
hydraulic force , forests , soils , rivers topic are closely related . Relevant
and other waters , harbors , fisheries , resources in Diamond Bar discussed
wildlife , minerals , and others as in this chapter include open
applicable to each jurisdiction . An space , biological resources , water
open space element is intended resources , air quality, and cultural
to ensure that cities and counties resources .
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RESOURCE CONSERVATION � Diamond Bar General Plan 2040
RESOURCE CONSERVATION �,� �
i;; l� ': f , �=�, 'if � ONSHIP TO OTHER ELEMENTS
This chapter is closely related corresponding policies intended
to Chapter 2 , Land Use and to reduce vehicle miles traveled
Economic Development , Chapter and related air pollutant emissions .
4 , Circulation , Chapter 6 , Public Chapter 6 includes a discussion on
Facilities and Services , and parks and recreation , including
� Chapter 8 , Community Health recreational open space ; water �
and Sustainability . Chapter 2 supply and demand , which are tied
establishes the Land Use Diagram to water quality and hydrology ;
and designates allowable uses and wastewater and stormwater
throughout the Planning Area , facilities , which also relate to
including those that identify lands water quality . Finally, Chapter 8
to be preserved as open space . It includes some discussion related
also establishes various policies for to environmental justice , including
development to preserve the City ' s air quality, as it pertains to public
hillsides for the purposes of safety health ; it also considers impacts
and maintaining Diamond Bar ' s to natural resources as a result of
visual character. Chapter 4 lays greenhouse gas ( GHG ) emissions .
out a transportation network and
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Diamond Bar General Plan 2040 � RESOURCE CONSERVATION
,, -�. .,. ,�' '� � � '� � � '�fN
5 . 2 OPEN SPACE
� I� � f@9 �5 �'' R� �' i � f�q@/If� h�"I �° � h3 ��
The open areas within the City are Figure 5 - 1 shows the Planning Area ' s
integral to the creation of a sense open space network as of 2019,
� of place , its health , and its safety, including designated open spaces , �
contributing to its countryside parks , and the Diamond Bar Golf
atmosphere , providing opportunities Course , which , while developed ,
for outdoor recreation for all ages , serves a number of open space
and supporting ecological health functions . The figure also shows the
and hazard mitigation . Ens"uring Significant Ecological Area in the
that areas treasured for their open SOI .
space values are preserved is a
priority for Diamond Bar community
members .
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RESOURCE CONSERVATION � Diamond Bar General Plan 2040
Figure 5 . 1 Open Space Network
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'� City Owned Designaced Open Space Highways L J� City of Diamond Bar
jjj� Privately Owned Park/Recreation Area Ramps � ������ Sphere of InFluence/SEA I S
Designated Privately Owned Open Space �T Railroads � County Boundary
_ Park
Major Roads
�I Golf Course
Minor Roads
0 0.375 0. 75 I .5 �
Source: City of Diamond Bar 2019; Dyett & Bhatia, 2019 MILES
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION
•
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GOALS & POLICIES � � �++
OPEN SPACE
See Chapter 2 : Land Use and Economic Development
for policies regarding the designation of open space
land . See Chapter 5: Public Facilities and Services for
policies related fio parks and recreational facilities .
� GOALS
RC- G -1 Create and maintain a balanced open
space system that will preserve scenic
beauty and community identity,
protect important biological resources ,
provide open space for outdoor
recreation and the enjoyment of
nature , conserve natural resources ,
and ensure public health and safety .
RC- G - 2 Seek to link the various elements of the
open space network through the
development of an integrated
system of trails and greenways .
RC- G - 3 Preserve to the extent possible open space
ridgelines , hilltops , and prominent slopes for
aesthetic , biological and natural resource
conservation , and safety purposes .
i�' ��) �� � � � � s;
RC- P-7 Obtain and designate open space land
through acquisition techniques such as :
a , Requiring the incorporation of open
space and recreational areas into the
design of new development projects ,
preserving and enhancing as open
space significant stands of vegetation ,
natural landforms , and any areas of
special ecological significance through
site design approaches such as
clustering and ecological planning .
b . Allowing clustering or transferring of all
or part of the development potential of
a site to a portion of the site to preserve
significant environmental resources
such as natural and native habitats
Diamond Bar General Plan 2040 � RESOURCE CONSERVATlON
( oak woodland , coastal sage
scrub , etc . ) , natural creeks , artesian
springs , vernal pools , seeps , riverines ,
wetlands , riparian habitats , wildlife
a corridors and linkages , and natural
geological features within proposed
developments as open space .
c . Allowing for acquisition of open space
lands through the entitlement process
and the transfer of densities among
land uses of like designation .
d . Collaborating with land trusts and
other conservation groups to acquire
open space land through , but not
limited to , conservation easements .
RC- P- 2 As future parks are developed , incorporate
existing natural open space , existing
water resources and mature vegetation
to provide for passive recreation
opportunities and wildlife habitats .
RC- P- 3 A decision to rescind , terminate , abandon ,
remove , or modify an open space deed
restriction , map restriction or Open Space
land use designation must be preceded
by both a finding by the City Council that
the decision confers a significant benefit
on the City and a favorable vote of the
electorate at a regular or special election .
RC- P- 4 Maintain an inventory of open lands which
were set aside for open space uses as
part of previous development approvals
through the County and require verification
as to the existence of any potential
open space restrictions previously
approved on a subject property prior to
accepting development proposals .
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
GOALS & POLICIES �
RC- P- 5 Link parks , open spaces , and regional hiking
trails with a trail network where feasible ,
acknowledging topographical constraints
and other barriers . Incorporate existing trails
� and bicycle and pedestrian infrastructure , �
working with willing landowners to prioritize
land acquisition where necessary . Where
possible , incorporate landscaping and
enhance natural features to create
greenways along the trail network .
RC- P- 6 Develop standards for planning , design ,
management , and maintenance of trails
and pathways within parks , preserves ,
open space , and rights - of-way .
RC- P-7 Minimize visual and environmental impacts
to ridgelines , hilltops , and slopes through
regulations that minimize grading ,
ensure that development conforms
to natural topography, and maximize
safety, correlating development
intensity with the steepness of terrain .
Landform grading criteria and maximum
allowable densities shall be based
upon the slope density formula as set
forth in the Development Code .
RC- P- 8 Work with other jurisdictions and
conservation organizations to
protect prominent ridges , slopes ,
and hilltops in and adjacent to the
City and its Sphere of Influence .
Such features include, but are not limited
to, areas identified by Los Angeles County
as Significant Ecological Areas; Tonner
Canyon; the hills within Tres Hermanos
Ranch; and the hillsides along SR - 57,
between Diamond Bar and Brea .
Diamond Bar General Plan 2040 � RESOURCE C09VSERVATION
5 . 4 BIOLOGICAL RESOURCES
Qn � �� 4�, 'ii' .�; �i fi c�`�i. �n ��' �� � �!�, � � �� � � � I� `�
Although Diamond Bar is primarily Venturan Coastal Sage Scrub
developed as a residential Venturan coastal sage scrub
� community, vegetated habitat types ( VCSS ) is a form of coastal sage
- have a large presence within the scrub found in the coastal and
Planning Area ' s hilly terrain . The cismontane region of Southern
following vegetation communities California and Baja California .
have been identified in the Planning It is composed of low, soft -
Area . This inventory is based on field Woody subshrubs on dry slopes
reconnaissance undertaken for the below 3 , 000 feet . The dominant
General Plan process and review characteristic species found in VCSS
of aerial imagery in 2016 , as well as Within the City include California
input from the community ; it was sagebrush ( Artemisia californica ) ,
determined at a broad , citywide California buckwheat ( Eriogonum
scale and is thus for guidance fasciculatum ) , and black and white
purposes only . For a more detailed sage ( Salvia melifera and Salvia
understanding of conditions apiana ) . A dominance of California
on the ground , particularly as buckwheat is present within some
conditions change over time , site - of the VCSS communities , while
specific study would be required . California sagebrush is the dominant
Examples of situations when such species in other areas . Other species
studies should be undertaken present within this vegetation
include development proposals , community include lemonadeberry
trail planning , and mitigation ( Rhus integrifolia ) , brittlebush
bank planning . The vegetation
communities within the Planning ( Encelia farinosa ) , and coastal
prickly pear ( Opuntia littoralis ) .
Area are mapped in Figure 5 -2 . The understory is dominated by
non - native grasses such as brome
�� , , R � �� , � , } ,, :�= 4 � , , ,;;fN� ( Bromus spp . ) and wild oats ( Avena
� t �� ����� �` ` ;' �+ ��#��� ��'�"r spp . ) . Where non - native grasses
' �` ''~� � dominate the VCSS communities
r. � �ii
'` � i �I 'I .' �tij�. �� ,: � ' �C
„� - �' � ; � �Y� . r . at greater than 50 percent , the
��_ „ p.� � ,,,g����« w ,f��.:�w .
F � community is categorized as
. :�� •. _ ,�� ��; ..
�� � .,,; , r�� .�� y � � �;, �}�• disturbed VCSS . VCSS commonly
��
. 'ro�y , � ' ' " ` ,a ' ' . ,� '� t � "� � � occurs on south - facing slopes
�. � �
'�� "„�:�'� , - ��� �� > throughout the Planning Area . The
� .�, �
�s � �•; '�'' � �` h , � R ;� �:,� � California Department of Fish and
� v ��, . - °`��'�' Wildlife ( CDFW ) considers VCSS to
� � be a Sensitive Natural Community
�`� . � �
�� �}r�� �=47 ��� ( the characteristics of Sensitive
�' t=':� a
.,, ,. . �yn.,=,-�; ..r1
�� ;, Natural Communities are described
later in this chapter ) .
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
RESOURCE CONSERVATION � � �
Figure 5 . 2 Vegetation Communities
as�g�° ���,
e °� �•.
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CaliforniaWalnutWoodland ' _ _ Coast Live OakWoodland � � Non-Native Riparian Disturbed
f California Walnut Woodland I _ Sycamore Alluvial Woodland _ Southern Willow Scrub �� I� Diamond Bar Golf Course
L._ _ ' Coast Live Oal< Woodland
�� _ I Non-Native Woodland _ Venturan Coastal Sage Scrub Developed
California Walnut Woodland /
_ Coast Live Oal< Woodland / Non-Native Grassland _ DisturbedVenturan Coastal Sage Strub � _ J� City of Diamond Bar
Vencuran Coastal Sage Scrub
� "" �._ �.� Sphere of Influence
Source: Ciry o( Diamond Bar 2019; o o.3�s o.�s is
ESA PCR, 2016; Dyett & Bhalia, 2019 Mi�Es
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION
Non - Native Grqssland blue elderberry and coast live oak
Non - native grassland consists of � Quercus agrifolia ) interspersed
dense to sparse annual grasses less throughout . A small patch of
than three feet high . Within the City, sycamore alluvial woodland is
this community is dominated by located in upper Tonner Canyon .
bromes , oats , tocalote ( Centaurea
' Southern Willow Scrub
� melitensis ) , Russian thistle ( Salsola
tragus ) , Mediterranean mustard Southern willow scrub is a
( Hirschfeldia incana ) , and telegraph deciduous , riparian community
weed ( Heterotheca grandiflora ) . dominated by dense thickets of
Other broadleaf weeds may also one or more willow tree species
be present . Non - native grassland is and various other scattered shrubs
largely located in the northeastern and larger emergent trees . Within
corner of the City, due to a historic City boundaries , this community
presence of agricultural uses , as consists mainly of arroyo willow
well as in small parcels throughout ( Salix lasiolepis ) . Much of this
the City, often in areas that have habitat within the City is between
been cleared for fire control . 6 and 15 feet in height and varies
in density, from relatively open
Sycamore Alluvial Woodland to impenetrable . Southern willow
Southern alluvial woodland is scrub is found along Brea Canyon
located along braided channels Creek downstream of residential
of intermittent streams , consisting development , along Tonner Canyon
of open to moderately closed Creek within the SOI , and along a
winter- deciduous trees and tributary of Tonner Canyon Creek
dominated by western sycamore above Arnold Reservoir. Southern
( Platanus racemosa ) . Blue willow scrub is another vegetation
elderberry ( Sambucus nigra ) is also community considered by the
a characteristic species . Within CDFW to be a Sensitive Natural
the City, this habitat is composed Community .
largely of western sycamore , with
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_ _ _ _ —_ _ . . . _ _ . _ . . . .� �. . , _ _ . . . . .. ._ _ � . . E_c�6w4'(sffeu� �_
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
RESOURCE CONSERVATION �°��! � +�!
Coast Live Oak Woodland Mixed Plant Communities
Coast live oak woodland is In cases where two or more
dominated solely by coast live vegefiation types are highly
oak trees , which can reach intermixed , they have been
approximately 30 to 75 feet in mapped as one mixed plant
height , and occur generally in community . Within the study
� shaded ravines on north - facing area these occur as : 1 ) California
slopes . This community often walnut woodland / coast live oak
has limited shrub cover with an woodland , where California walnut
understory of ripgut grass ( Bromus trees and coast live oak trees grow
diandrus ) . Within the City, the in proximity with one another and
dominant plant species is coast often have overlapping canopies ;
live oak , with limited shrubs such and 2 } California walnut woodland /
as toyon ( Heteromeles arbutifolia ) coast live oak woodland / Venturan
and laurel sumac ( Malosma laurina ) coastal sage scrub , where
and an understory of mixed grasses , California walnuts and coast live
predominately brome and oat . oaks grow together in small copses
Although the coast live oak is the with Venturan coastal sage scrub
dominant tree species , coast live being found in between .
oak woodland , as defined , is limited
to the northeastern region of the Other Land Cover Types
City and the SOI , generally on
north - facing slopes . Non - Native Riparian
Non - native riparian consists of
California Walnut Woodland densely vegetated riparian thickets
California walnut woodland is heavily dominated by invasive
similar to coast live oak woodland plant species . Within the City,
but is dominated by Southern this community consists largely of
California black walnut SJuglans Mexican fan palm ( Washingtonia
californica ) ; however, coast live oak robusta ) , Brazilian pepper tree
is a comman species of this habitat . ( Schinus terebinthifolius � , and
Within the City, the dominance of eucalyptus ( Eucalyptus sp . � . Tree of
� coast live oak varies throughout heaven ( Ailanthus altissima ) and
' this habitat but is largely present ornamental pines ( Pinus sp . ) also
throughout . Other species present occur within this community . There
I within this habitat include toyon , is some presence of arroyo willow
laurel sumac , blue elderberry, and coast live oak , but natives
� and an understory of non - native such as these make up less than 25
jgrasses such as brome and oat . percent of the vegetation within
California walnut woodland is this community . Non - native riparian
� habitat is located in a sin le atch
i dispersed throughout much of the g p
� City, generally occurring on north - that runs along the south side of
facing slopes . The CDFW considers SR - 60 in the northern portion of the
California walnut woodland to be a City .
Sensitive Natural Community .
Diamond Bar General Plan 2040 � RESOURCE CONSERVATIO {V
Developed human activity and are no longer
Developed / urban areas have able to support a recognizable
been physically altered to the native or naturalized vegetation
point where they can no longer association . The soil is often highly
support native vegetation . The compacted or frequently disturbed .
�; land cover type includes areas Disturbed habitat within the City
has shown evidence of discing or
� with permanent or semi - permanent high compaction . Only two small �
structures , pavement or other portions within the northern region
hardscape , and landscaped areas of City were mapped as disturbed ;
that require irrigation . Developed both areas are along roads and
land constitutes nearly two - thirds of adjacent to businesses .
the land within the City . It includes
businesses , residences , schools , Non - Native Woodland
parks , highways and other roads ,
sidewalks , and irrigated landscapes . Non - native woodland typically
Within the areas called out as consists of planted , non - native
developed habitat , there may be trees , often characterized by
some oak , walnut trees , or other eucalyptus . Within the City,
small pockets of native habit . non - native woodland consists of
Brazilian pepper trees , ornamental
Disturbed pines , eucalyptus , and acacia
Disturbed areas have been ( Acacia sp . ) , among others . This
physically altered by previous habitat is located in the southern
portion of the City and the SOI .
SPE � � � � � � ATUS � P � � 9 � � � Eo9 � �, i � �\ i�� ] °il ,� `i� ��
Special - Status Plant Species Several sensitive plant species have
Special - status species are those been reported as recorded near
plants and animals that , because the City, including within the SOI ,
of their acknowledged rarity or as shown in Figure 5 - 3 ; however,
vulnerability to various causes of the majority of these species are
habitat loss or population decline , not expected to be present within
are recognized in some fashion by City limits for one or both of the
federal , State , or other agencies as following reasons : suitable habitat
deserving special consideration . to support the species is not present
within the City ; or the species
According to the California Natural occurrences are highly localized
Diversity Database ( CNDDB ) , as of some distance from the City. These
2019, no special - status plant species plant species are described in Table
have been recorded within the City . 5 - 1 .
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
RESOURCE CONSERVATION � � �i
Table 5 - 1 : Special Status Plant Species Occuring or Potentially Ocurring
within the Planning Area
- . - . . - - - . . . . - . .
- .
i°�u���lk�.;j ;�.; _ •
D o �k , E
Microseris douglasii Small -flowered 4 . 2 Cismontane woodland , Recorded in study area
var. platycarpha microseris coastal scrub , valley south of Diamond Ranch
and foothill grassland / High School .
clay.
Senecio aphanactis Rayless ragwort 2B . 2 Cismontane woodland , Puddingstone Dam
coastal scrub , drying ( 1932 ) ; moderate
alkaline flats . potential where habitat
occurs .
Pseudognaphalium White rabbiy- 2B . 2 Sandy wash habitats Not recorded from the
leucocepalum tobacco Puente Hills ; low potential
in study area .
Symphyotrichum San Bernardino 1 B . 2 Low potential to occur Recorded from study
defoliatum aster in moist habitats . area vicinity, but possibly
extirpated .
Lepidium virginicum Robinson ' s pepper 4 . 3 Chaparral and coastal Recorded in the Puente
var. robinsonii grass scrub . Hills and within the study
area
Convolvulus simulans small -flowered 4 . 2 Coastal scrub , valley Moderate potential
morning glory and foothill grassland / where habitat occurs .
clay, serpentine seeps .
Dudleya multicaulis Many-stemmed 1 B . 2 California plant Bonelli Regional Co . Park
dudleya communities including ( 1987 and 1982) ; recorded
sage scrub , valley on Way Hill ( 1987 ) ;
and foothill grassland ; Many CNDDB records
heavy clay soils or rock throughout the area ;
outcrops . high potential to occur in
study area .
Astragalus Braunton ' s milk- 16 . 1 Sage scrub , chaparral , Recorded in San Gabriel
brauntoniil vetch valley and foothill Mountain foothills to the
grassland , closed north and the Santa Ana
cone coniferous forest ; Mountain foothills to the
limestone endemic , south ; moderate potential
carbonate soils , recent to occur in study area .
burns and disturbed
areas .
Quercus engelmannii Engelmann oak 4 . 2 Chaparral , cismontane Recorded in the Chino
woodland , riparian and Puente Hills ;
woodland , valley and moderate potential to
foothill grassland . occur in study area .
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION
Table 5 - 1 : Special Status Plant Species Occuring or Potentially Ocurring
within the Planning Area
- . - . . - - - . . . . - . .
. - .
�;��: m � �
� �r��,> �� m - � �
Phacelia hubbyi Hubby ' s phacelia 4 . 2 Sage scrub and Recorded in the Puente
chaparral Hills and west Pomona
hillsides ; high potential to
occur in the study area .
Juglans californica Southern 4 . 2 Sage scrub , chaparral , Occurs throughout much
California black cismontane woodland ; of the study area .
walnut often in association with
oaks /oak woodland ;
frequently found on
steep hillsides with
northern exposures ;
deep alluvial soils .
Brodiaea filifolia Thread - leaved 1 B . l Sage scrub, valley/ Recorded from the San
brodiaea foothill grassland , Gabriel Mountains to
cismontane woodland ; the north and Santiago
vernal pools ( clay soils ) . Hills to the southeast ; low
potential to occur in the
study area .
Calochortus Catalina mariposa 4 . 2 Openings in chaparral , Recorded within the study
catalinae lily valley and foothill area within openings in
grassland , cismontane shrublands and scrub .
woodland ; heavy soils .
Calochortus clavatus Slender mariposa 1 B . 2 Chaparral , especially Low potential where
var. gracilis lily in foothill canyons . ; habitat occurs .
generally found in
shade .
Calochortus Plummer ' s 4 . 2 Sage scrub , valley Potentially present in the
plummerae mariposa lily and foothill grassland , study area .
yellow pine forest ; dry,
rocky or sandy sites ,
granitic or alluvial soil ;
to 4 , 800 feet .
Calochortus weedii Intermediate 1 B . 2 Chaparral , coastal Recorded in study area
var. intermedius mariposa lily scrub , valley and and at Elephant Hill ( 1991 )
foothill grasslands . in Pomona .
Piperia cooperi Cooper ' s rein - 4 . 2 Scrub , chaparral and Not recorded in the
orchid oak /walnut woodlands Puente Hills , but is
recorded in the Santa
Ana River Canyon to the
south ; low potential to
occur in the study area .
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
RESOURCE CONSERVATION � ►�:�
Table 5 - 1 : Special Status Plant Species Occuring or Potentially Ocurring
within the Planning Area
- . - . . - - - . . . . - . .
- .
, . _
•
� . m , � �� �:
Polygala cornuta var. Fish ' s milkwort 4 . 3 Oak /walnut woodlands Recorded in Chino Hills
fishiae and chaparral State Park to the south ;
high potential to occur in
the study area .
Horkelia cuneata ssp . Mesa horkelia 1 B . l Prefers chaparral , Moderate potential to
puberula woodland , and coastal occur in the study area .
scrub habitats .
Notes :
l . Federally listed as endangered
CNPS Listing Status :
List 1 B - Plants Rare , Threatened , or Endangered in California and elsewhere
List 2 - Plants Rare , Threatened , or Endangered in California , but more common elsewhere
List 3 - Plants about which we need more information - a review list
List 4 - Plants of limited distribution - a watch list
The CNPS recently added " threat ranks , " which parallel the ranks used by the California Natural
Diversity Database ( CNDDB ) . These ranks are added as a decimal code after the CRPR List ( e . g . , List
1B . 1 ) . The threat codes are as follows :
0 . 1 - Seriously endangered in California ( over 80 % of occurrences threatened / high degree and
immediacy of threat )
0 . 2 - Fairly endangered in California ( 20 - 80 % occurrences threatened )
0 . 3 - Not very endangered in California ( < 20 % of occurrences threatened or no current threats known )
Source : California Native Plant Sociefy, 2019.
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION
Special - Status Wildlife Species
The CNDDB listed 27 sensitive wildlife species in the Planning Area .
Table 5 -2 provides a summary of the sensitive wildlife species with a low,
moderate , or high potential of occurring within the City based upon
their known geographic ranges , distributions , and preferred habitats . A
selection of these species within close proximity to the Planning Area are
� mapped in Figure 5 - 3 . �
_ �
� . _ :. .. : : . . _ . .: ,_ v. .: _ _ _ . .. . . . _ . _ _ _- . : .. _ .__ _ -.-.« � - - _- _. -�- - - - - - -_ _ _ .. . _ _ _ . _ �
;
� �
� j
A .
Table 5 -2 : Special Status Plant Species Occuring or Potentially Ocurring
within the Planning Area
- . - . . � . - - - - . . . . - . .
- .
r� '
Bombus crotchii Crotch S1S2 Recorded at scattered High potential to occur in
bumblebee G3G4 locations in southern study area .
California .
Helminthoglypta Southern S1S2 Recorded at scattered High potential to occur in
tudiculata California locations in southern study area .
shoulder- band California .
snail
Helminthoglypta Trask ' s shoulder- G1G2 Recorded at scattered High potential to occur in
traskii band snail Sl locations in southern study area .
California .
� �.���,
, � <H-� ,
Spea hammondii Western SSC Open areas in lowland High potential to occur in
spadefoot grasslands , chaparral , the study area .
and oak woodlands ,
areas of sandy or
gravelly soil in alluvial
fans , washes , and
floodplains .
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
RESOURCE CONSERVATION � � +� �►
Table 5 -2 : Special Status Plant Species Occuring or Potentially Ocurring
within the Planning Area
- . . . � . - - - - . . . . - . .
• .
� F
Taricha torosa Coast range SSC Moist woodlands . Not recorded in the
newt Puente/Chino Hills ; low
potential to occur in the
study area .
ill�_= - - • - °
Lampropeltis zonata San Diego SSC Moist woods , Moderate potential to
pulchra mountain woodlands , chaparral occur in study area .
kingsnake and sage scrub .
Salvador hexalepis Coast patch - SSC Sage scrub, chaparral , Moderate potential to
virgultea nosed snake and oak /walnut occur in study area .
woodlands .
Thamnophis Two -striped SSC Riparian and freshwater Moderate potential to
hammondii garter snake marshes with perennial occur in the study area .
water.
Arizona elegans California glossy SSC Sage scrub , chaparral , Moderate potential to
occidentalis snake and oak /walnut occur in the study area .
woodlands with loose
soil for burrowing .
Emmys marmorata Western pond SSC Ponds , slow moving Known to occur in
turtle streams . Brea Creek ; moderate
potential to occur
in suitable habitat
elsewhere in the study
area .
Phrynosoma blainvillii Coast horned SSC Most valley and foothill High potential in open
lizard scrub , chaparral and space in the study area .
woodland natural
communities .
Anniella stebbinsi Southern SSC Several habitats but Moderate potential in
California legless especially in valley- habitats in the study area .
lizard foothill woodlands ,
chaparral , and scrub
habitats .
Aspidoscelis tigris Coastal whiptail SSC Several habitats but High potential in habitats
stejnegeri especially in valley- in the study area .
foothill woodlands ,
chaparral , and scrub
habitats .
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION
Table 5 -2 : Special Status Plant Species Occuring or Potentially Ocurring
within the Planning Area
. - . . . . - - - . . . . - . .
a
Crotalus ruber Red diamond SSC Cactus and sage scrub High potential in suitable
rattlesnake and chaparral . habitats in the study area .
Aquila chrysaetos Golden eagle SSC , SFP, Mountains , deserts , and Recorded over the study
FP open country ; prefer to area ; nesting in the Chino
forage over grasslands , Hills ; High potential to
deserts , savannahs forage within the study
and early successional area .
stages of forest and
shrub habitats .
Circus hudsonius Northern harrier SSC Freshwater marshes , Recorded in the Tres
grasslands , and Hermanos and Firestone
agricultural fields . Scout Reservation areas .
Elanus leucurus White -tailed kite SFP Grasslands with Recorded in the Tres
scattered trees , Hermanos and Firestone
near marshes , along Scout Reservation areas .
highways . High potential in study
area .
Buteo regalis Ferruginous SBSWG Winters in expansive Recorded in the Chino
hawk rangelands and Basin ; moderate potential
agricultural areas in the to occur in the study
region . area .
Eremophila alpestris Horned lark SBSWG Open ground . Moderate potential
to occur in the Tres
Hermanos and SOI areas .
Falco mexicanus Prairie falcon SBSWG Open country, Moderate potential to
especially arid . occur migrating through
the study area .
Athene cunicularia Burrowing owl SSC Dry grasslands and Reported from the Tres
agricultural , and scrub Hermanos Ranch High
areas . potential to occur within
the study area .
Asio otus Long - eared owl SSC Riparian and live oak High particularly in oak
woodlands . and walnut woodlands .
Asio flammeus Short- eared owl SSC Winters in open areas . Low potential in
herbaceous stands .
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
RESOURCE CONSERVATION � � ,�
Table 5 -2 : Special Status Plant Species Occuring or Potentially Ocurring
within the Planning Area
- . - . . . . - - - - . . . . - . .
- • .
a E
Campylorhynchus Coastal cactus SSC Coastal sage scrub , Recorded at Sycamore
brunneicapillus wren vegetation with thickets Canyon and Summit
of prickly pear or cholla Ridge Parks ; High
cactus . potential wherever
cactus scrub occurs .
Sialia currucoides Mountain SBSWG Winters in open country. Moderate potential
bluebird to occur in the Tres
Hermanos and SOI areas .
Empidonax traillii Willow flycatcher FE , SE Low elevational sites : Low potential for nesting .
Riparian woodlands
that contain water and
low growing willow
thickets .
Icteria virens Yellow- breasted SSC Riparian woodlands High potential along Brea
chat with a thick understory. and Tonner Creeks .
Sturneila neglecta Western SBSWG Grasslands , prairies , Recorded in the study
meadowlark pastures , and area .
abandoned fields .
Agelaius tricolor Tricolored SE Freshwater marshes Moderate potential to
blackbird and riparian scrub . forage in open areas
of Tres Hermanos and
Tonner Canyon .
Lanius ludovicianus Loggerhead SSC Open habitats with High potential to occur
shrike scattered shrubs , trees , in Tres Hermanos and
posts , fences , utility Tonner Canyon open
lines , or other perches . areas .
Ammodramus Grasshopper SSC Expansive grasslands Recorded in the study
savannarum sparrow area ; moderate potential
to occur in Tres Hermanos
and Tonner Canyon .
Amphispiza belli belli Bell ' s sage SSC Dense , dry chamise High potential in study
sparrow chaparral and coastal area where habitat
slopes of coastal sage occurs .
scrub .
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION
Table 5 - 2 : Special Status Plant Species Occuring or Potentially Ocurring
within the Planning Area
- . - . . � . - - - - . . . . - . .
- .
Pooecetes gramineus Vesper sparrow SBSWG Open grassy areas . High potential to occur
� in Tres Hermanos and �
Tonner Canyon open
areas .
Setophaga petechia Yellow warbler SSC Sparse to dense High Potential in oak ,
woodland and forest rirarian and walnut
habitats with or without woodlands .
heavy brush understory.
Polioptila californica California FT, SSC Coastal sage scrub Several recent recorded
gnatcatcher vegetation ; generally occurrences in the study
avoids steep slopes and area at Summit Ridge ,
dense vegetation for and Pantera parks , Steep
nesting . Canyon and hills south
of Diamond Ranch High
School ; high potential in
sage scrub habitats .
Vireo bellii pusillus least Bell ' s vireo FE , SE Perennial and Reported from Tonner
intermittent streams Canyon ; Moderate
with low, dense riparian potential to occur along
scrub and riparian Brea Creek
woodland habitats ;
nests primarily in
willows and forages
in the riparian and
occasionally in
adjoining upland
habitats . Associated
with willow, cot
Geococcys greater SBSWG Open country with Recorded in the study
californianus roadrunner scattered brush . area .
- - ;, _
Chaetodipus fallax NW San Diego SSC Sandy herbaceous High potential in study
pocket mouse areas , usually in area particularly in
association with rocks cactus and sage scrub
or coarse gravel , occurs .
sagebrush , scrub ,
annual grassland ,
chaparral and desert
scrubs .
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
RESOURCE CONSERVATION � � r��i
Table 5 -2 : Special Status Plant Species Occuring or Potentially Ocurring
within the Planning Area
- . - . . � . - - - - . . . . - . .
• .
a Eumops perotis Western mastiff SSC In arid and semi - arid Low potential for roosting
californicus bat lowlands ; roosts in cliffs sites but may forage in
and rock crevices . the study area .
Lasiurus blossevillii Western red bat Roosts in cliffs and in Moderate potential in
buildings . study area ; roosts in
exfoliating bark on many
tree species including
ornamental trees .
Lasiurus xanthinus Western yellow SSC Roosts primarily in Moderate potential to
bat palms under dead roost in the study area .
fronds .
Antrozous pallidus Pallid bat SSC Roosts in cliffs , crevices , High potential in study
mine tunnels , caves , area ; roosts in exfoliating
house attics and other bark on oak trees .
man - made structures .
Lepus californicus San Diego black- SSC Open brushlands and Moderate potential to
bennetti tailed jackrabbit scrub habitats . occur throughout the
study area .
Neotoma lepida San Diego desert SSC Chaparral , coastal High potential to occur
intermedia woodrat sage scrub , and oak where suitable habitat is
woodland . found .
Bassariscus astutus Ringtail cat SFP Commonly found in Seldom observed ; low
rocky habitats , where potential to occur in the
it nests in the hollows study area .
of trees or abandoned
wooden structures .
Taxidea taxus American SSC Open grasslands with High potential to occur in
badger available prey. the study area .
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION
Table 5 -2 : Special Status Plant Species Occuring or Potentially Ocurring
within the Planning Area
- . - . . � . - - - - . . . . - . .
- .
� Notes : Agency Listing Status : •
A
- FE Federally listed as Endangered
FT Federally listed as Threatened
FP Federally protected
SE State - � isted as Endangered
SFP State Fully Protected
SSC California Species of Special Concern
NatureServe Ranking :
S1 = Critically Imperiled — Critically imperiled in the state because of extreme rarity ( often 5 or fewer
populations ) or because of factor ( s ) such as very steep declines making it especially vulnerable to
extirpation from the state .
S2 = Imperiled — Imperiled in the state because of rarity due to very restricted range , very few
populations ( often 20 or fewer) , steep declines , or other factors making it very vulnerable to extirpation
from the state .
S3 = Vulnerable —Vulnerable in the state due to a restricted range , relatively few populations ( often 80
or fewer ) , recent and widespread declines , or other factors making it vulnerable to extirpation from the
state .
S4 = Apparently Secure — Uncommon but not rare in the state ; some cause for long -term concern due
to declines or other factors .
S5 = Secure — Common , widespread , and abundant in the state .
Gl = Critically Imperiled —At very high risk of extinction due to extreme rarity ( often 5 or fewer
populations ) , very steep declines , or other factors .
G2 = Imperiled —At high risk of extinction due to very restricted range , very few populations ( often 20 or
fewer) , steep declines , or other factors .
G3 = Vulnerable —At moderate risk of extinction due to a restricted range , relatively few populations
( often 80 or fewer) , recent and widespread declines , or other factors .
G4 = Apparently Secure — Uncommon but not rare ; some cause for long -term concern due to declines
or other factors .
G5 = Secure — Common ; widespread and abundant .
Source : California Department of Fish and Wildlife Natural Diversity Database , 2018
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
RESOURCE CONSERVATION �
�
There may be occurrences of - - . � - - . _.
additional species within this ,, .� �; i ,�� � , i „ �:�� , , i � ��,i�ri !�, � r , � - ! I ���� << i � ;� ��� I'n�� � , Ilis�; � � ' i ��;7r �
area that have not et been � � �
- Y �.��;lli � �' �� > I `z? I ( : , � � ._ i�� r II ' I � � ' 1 ��_ �. ci/ 1�1 �i I � � �_ . �f IU ��j'J i ij���f��� ..
surveyed and /or mapped . Lack of ,;���� rll � � � i �� r� �� � � �u � ,�, �� i� � „ � ��, „ 1; � ��: , , ,� � ��� U � �� � �C��� � � _
� information in the CNDDB about a �� � : , < < , , i, �, �,, , . �� I i � I � � � i � � � �! ° ��' II JII� '� _ �� ;�� _ � � � � ���; �� ,) � '� � �
s ecies or an area does not imy� I � �, r,� „ 'I � ,�, i - � ,_-, • � , � , i� " �; 7 � f� _ � �
p f" Y . ? � � � <—� . �� II,�"�ir_ , � , , • , � ,,, , . ;, n j
that the species does not occur r� ;,, � � � , , r - . � � ; oi'« � li �� < << il�i „ � ,. I ' il��. � � � � ���.- u � � , r f( ' i � � i �` ;�,1! ��
or that there is a lack of diversity � , �,� ,�� �� i �- « � i � �, IP �� �� ir�;, ,, i °:; ,, II � . ��ir� � � I �_ ,
in that area . The species shown
in Figures 5 - 3 and 5 - 4 have the �� � i � �i � � i :-,� : � � � Il� �� �lii`.� ,-- �� , � ��� ��� i �, ii��o V � � ' �.. �
potential to occur outside of the �� � ����� �_ , ,; ��, ,;� , ��� Il � i � �� ��,i �� , � � i � , !� � � � � � � > �: � � � � � ��>>! �
areas where they are depicted . � :��i� vin � _ � �� i��� � � � :�� =,' ; �. , � r � �< <_ � i� � � �,� . � I ( �� t � � «-� 11 '
i ,
I ifl ( � � I I _; " � � �bl I�� r� � ^ � �, (� ' � ' ,) � ,� ��
Given the occurrence of these
t r ��� il� ll ` I � li ;i � � h � �i� � I( �ilill � ` i�` li � � �; li� � ( . f� IP _t � li
special - status species within ', � � �, Ji ; i ,, ,. ;f� � � � i� i� I � . � i��� � � I ,,�� i � i ��,4 � � i��� � �
Diamond Bar and its SOI and the ,� ,, ; � �, ,�� ; '� ,� , , , �. „ �� � i, _ .,; „ , �, ; � �� iJ �_ � � , �_ � �� . i� i,��� �
potential for others to exist within � ;;�� � ,�; ,, I �� . " � �� I � ����„ i� � � lil � , �;::�,o � > > � �. i '� � � � ���,; �
and surrounding the City, it will be , ,! � � , h , '�,, ��;,;� r , ,; , I �II '� , ; [�_;�, I� �% �� „��:_ � , I � ,� Ilii�;ii . ��
important for the City fo ensure '
the maintenance and protection
of the habitats that support them .
Strategies may include ensuring
that new development avoids or
mitigates any impacts that would
degrade the healthy function of
nearby habitat areas and exploring
programs such as conservation
or mitigation banking that can
preserve , enhance , restore , or
create habitat conservation areas
that may be threatened by new
development .
- - -- - _ _ - - - -_ _ - - - - — - --
;' �
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li�i I � � �� >ir� �� ��(Jll�� �c�ilf I ,'^'�� , ? IIIh�;Ii'�% , �,i��I �1C�":� I I ��ci�jlil`�� I li
�
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j i
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� ����f�� IC� ..11C�rli ?� „ � 1(ll�.� i � '(n 'r?� �! I(1 '� ('?illl� hIIII�✓I (� � lf � ��L �, �aCo�
� �- ,� ii
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i
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� I � _ � =`Vl � C�;� ri;t -` f� (GiI�U�JI I � � '� 'l'I 'l � llf� � :;�' n� iliG�� � r� { ni�;,if �I
� ��� ` - _
��� '� � II�� II �� I � �:�(o ��I � � !f�<�c � �llll � "' fili � i -11�'S 1 t » � :i�;il.�n� � � 'r iI�L � � �I
II �:c�1�i I lil�i �% li V� �I (O`,�i i �� l (11� , I(l 'fl'� � �� i If �l �^;(n �` lr�� �aJl � I('i L�'il
i l ) �������� -���� »i�i� il�� ' I ��171��? �II � (� I (iill� v� ���� I
�
Diamond Bar General Plan 2040 � RESOURCE CONSERVATIORI
Criticql Habitat Department of Fish and Wildlife
Critical habitat is defined by the ( CDFW ) due to their scarcity and /
Endangered Species Act as a or because they support special
specific geographic area that status plant and wildlife species
contains features essential for the have been identified in the
conservation of a threatened or Planning Area . These communities
� endangered species and that may are considered highly imperiled
require special management and communities by the CDFW ,
protection . USFWS - designated indicating that they are declining
critical habitat does not occur in acreage throughout their
within the City . range due to land use changes .
These communities are described
Sensitive Natural Communities previously and include Venturan
coastal sage scrub , southern
Three plant communities considered willow scrub , and California walnut
sensitive by the California woodland .
� � � � L� il �' f�"_: �/il �;�� ��r �; y��� �r, f���l `I;'
Wildlife movement corridors are Wildlife Corridor, that provides a
generally defined as connections linkage between the Cleveland
between blocks of habitat that National Forest in the Santa Ana
allow for physical movement Mountains through the Chino Hills
and genetic exchange between and the Puente Hills . Its importance
otherwise isolated animal is due not only to its being largely
populations . Movement corridors undeveloped , but also because it
may be local , such as between funnels wildlife movement to the
foraging and nesting or denning only natural undercrossing of SR - 57.
areas , or they may be regional in The Puente - Chino Hills Wildlife
nature , allowing animals to access Corridor has been the focus of
alternative territories as fluctuating the Wildlife Corridor Conservation
dispersal pressures dictate . In the Authority, a public and private
absence of wildlife corridors , various coalition , and the Puente Hills
studies have concluded that some Landfill Native Habitat Preservation
wildlife species , especially the larger Authority, which obtain funds to
and more mobile mammals , will not purchase land for the corridor.
likely persist over time in fragmented
or isolated habitat areas because
such conditions preclude the
infusion of new individuals and
genetic information into isolated
populations . �
Tonner Canyon , to the southeast of
the City, is an important part of a
regional wildlife movement corridor,
known as the Puente - Chino Hills
I
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
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Diamond Bar General Plan 2040 � RESOURCE CONSERVATION
Figure 5 . 3 Special Status Plants
, J ` Dudleya � Mesa Horl<eli
�
i� '? iur�r �d :`� , 57 •
� N
NPv��E � s
Plummer's� HOLTAVE
Mariposa-Lily ,�'' �
Intermediate yo�e"o
M EPJE Mariposa- Lily .���' Robinson's
Wh P PeppervGrass
,0° .� Many-Stemmed San Bernardino
�P``� •� Dudleya Aster ;
^`"o.a° 2� 71 � .
57 < �. . . • �1 �,;�. m
�� PHILADELPMIASi
/� ,\ �
�"����.i� II ¶ I J� l4� I
I
,� � `�, 60
� \�\,'
� lt� IIsS�� il_ ._ ,, . � � A
°a Metiolink \ ° y �
z ce Stafion �� Q� � r I �
R
U" T ,� � �o��� E � I
� � � r •- ------�
�RLLEY9LVD �1'�OMINGST ,\- �� RAN
� ,� P 4�E I op�E
J Go�EN5P111NG5�� % GPt�
bp t : � �r`� I` I f�ER, f��l,�', I', I� ii�IC�
,�.
\ � � COUV� I `(
P0
°O �
P %COIIMAflD i m �a�0
57 �� /
LOS ,qI�IGf..II" S I A�' "OFRRa �
C:�JU f�17Y � �
� o �P �I"""�" Intermediate
Intermediate �
Eap° � m y o Mariposa- Lily
ppjryP1ry0 i Mariposa- Lil� �
�
i Q 8uwom. r �
� p
I 5 af� @
/ p
9
4
, r
Intermediate i Robinson's
Mariposa-Lily �
Pepper-Grass
�
im . . � — . . . . �.� �., �, � � � �. � _ m �nT�..,--- ti.
ORAI�� GI _ CC� IJI'JTY �
I-'� � . �_ .
57
� Robinson 's PeppervGrass Major Highways Disclaimer: Information presented in this map is based on data
from CNDDB version April 2019. Areas of occurence on
� Intermediate Mariposa- Lily � _ J� City of Diamond Bar this map represent areas in which known locations of the
species listed here have been found as ofthe date ofthis version.
� Plummer's Mariposa- Lily ! 4 T ! Sphere of Influence There may be additional occurences of additional species within
- Many-Stemmed Dudleya County Boundary this area which have not yet been surveyed and/or mapped. Lack
of information in the CNDDB about a species or an area can never
CSan Bernardino Aster be used as proof that no special species occur in an area. CNDDB
can be contacted for more information about these occurences.
� Mesa Horl<elia
0 o.s i z �
Source: CNDDB, 2019; Dyett & Bhatia, 2019 MILES
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
Figure 5 . 4 Special Status Animals
Disclaimer: Information presented in this map is based "`�;:;iri� � California Souchern Callfornia
. .. : . .. . . : . : .
on data from CNDDB version April 2019. Areas Coastal Ir-;� ,ii„r,, ;;,.;; 57 Gnatcatcher leglesslaard �
Big ,
of occurence on this map represent areas in which Whiptail Free-Tailed
known locations of the species listed here have been �EP�` . Bat
found as of the date of this version . There may be v�P Western
Merlin
additional occurences of additional species wdhin this � j - //� Yellow Bat �-+��
area which have not yet been surveyed and/or mapped !� fk �++-1,�"�
Lack of information in the CNDDB about a species or ; . � � „o,ra„E
an area can never be used as proof that no special �� • �'
species occur in an area. CNDDB can be contacted - ` Coastal =�� t + --�
for more information about these occurences. California � 1 � J
Gnatcatcher �y\°eJD y� I �
�� '
a Least W,<MP�`"vE .a Californ =!�-{-' -6�j- . Western �
Bell 's glossy snal<e r' =�j"� Mastiff Bat 4
� Southern California
Vireo °
Rufous- Crowned ��` •� r: ,
Sparrow °"`y
na^ no d ,�,� 71 m
e �\
s � o �l P���aoE,P��� sr
��.
�s;9.<� I' , , ��,�;, i I ;
Coastal �
California � '�, 60
Gnatcatcher � I �'�
�
S � rruc � !t � =,� �•,� � Q � � �
�i Metrolink YQ��OW � �
o "f smno� Warpler � � p z s' � oq
�Q s
� T '� \ �°` E �� � � Least
� � G ° I � Bell s
r--- ,—• —
VALIEYBLV� ���OMiNGSi \_ �� �NO I • VI eO
� .� w Least Bell's "F � Tricolored aQPE
N�S� PF
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60 �`� e � C(� Uf�I �IY
Yellow ,� .� Wester
�o�,Mqqp Warbler � �oa"py PondTurde� Least Bell's
� 57 0` � Vireo , •„-•— �
^n,F�mo
I.OSP, NGI: LI :S � F^Aa / Yellow /' �
CC) UI�ITI' � % Warbler
o Cooper's � Golden Eagle
� P r��„�,���/ t Hawk +
� p d o
r
v^HFlNVEaP� Grasshopper � � Western Por�'d ` �, s '$ �"° ��',`�
Sparrow � Turtle �� �- • . , - � y,
Coastal � `A �/ o Least Bell 's
California � ^` �,,.e.� �
�=W � Vireo °°� �
Gnatcatcher �, °°"!'�� Yellow
6 ��
'=� � Warber o Least
d� � Coast �
Southern � � Horned °. �e1e'o Red iamond �
California 9� California ;
Horned Lark Yellow-Breasted Lizard ttlesnake � }
.: . . . . :•: . :. �
. . .
�:° `' Rufous-Crowned �� Chat
o- :
.. Sparrow - � �, � �, .,-. . , , �, ... 7 � � � . . , -,._ � ,.,� �oA �.w �,aq- - --- �___ , , ._ Western : 1
oastal Cactus - Pond �.
Wren OR/�,NGL' COUI �iTY Coast Turtle `�711
Red-Diamond � ` Horned �y � }
� ;r:� � ::`•:'E : :: •: ; • Rattlesnal e � � 4 Lizard , � :
Coastal . � .
California T�-'�: �:'•�::� �' � ` • �
Gnatcatcher ' ��� " � � � � � � �
;; r,-s. �'�.t:
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Pocl<eted ' '. . • :. . . . . . . . : ' . '
� �.'...,.::.; . .,.'•.: -
Free-Tailed 57 � . ' '. �
Bat
EndangeredlThreatened Species �.'�' .�': : Arroyo chub 0 Western Mastiff 8at _ Grasshopper Sparrow
� California black rail � American badger � Yellow-Breasted Chat � Merlin
0 Coastal California Gnaaaccher
� Souchern Cali(ornia legless lizard — Cali(ornia Horned Larl< Pod<eted Pree-Tailed Bat
— Least Bell'sVireo ��,� Southern California Rutous-Crowned Sparrow j___j Cooper's Hawl< 0 Red-Diamond Ratdesnake
� WescernYellow Bat � Big Free-Tailed Bat 0 Tricolored Blackbird
Other Species � Golden Ea le
8 � Coasc Horned Lizard Wescern PondTurtle
� White-railed kite � Long-Eared Owl — Coastal Cactus Wren — '
� California glossy snake Yellow Warbler � Coastal Whipcail �--—I City of Diamond Bar
0 0.5 I 2 �
Source; CNDDB, 2019; Dyett & Bhatia, 2019 MILES
Diamond Bar General Plan 2040 � RESOURCE CONSERVATIOfV
BIOLOGICAL RESOURCES
�� � � � �
RC - G - 4 Maintain , protect , and preserve biologically
significant areas , including Significant
� Ecological Area ( SEA ) 15 , riparian areas , �
- oak and walnut woodlands , and other
areas of natural significance , providing
only such recreational and cultural
opportunities as can be designed in a way
that sustains , repairs or restores ecosystems
rather than detracts from them .
RC - G - 5 Protect rare , threatened , endangered , and
other special - status plant and
animal communities .
RC - G - 6 Promote the use of native and drought - tolerant
vegetation in landscaping where practical .
�� � � � � � � �
RC - P - 9 Require , as part of the environmental review
process prior to approval of discretionary
development projects involving parcels within ,
adjacent to , or surrounding a significant
biological resource area , a biotic resources
evaluation of the site by a qualified biologist ,
requiring that time - specific issues such as the
seasonal cycle of plants and migration of
wildlife are evaluated . Such evaluation shall
analyze the existing and potential natural
resources of given site following at least one
site visit as well as the potential for significant
adverse impacts on biological resources , and
shall identify measures to avoid , minimize , or
mitigate any impacts that would degrade
its healthy function . In approving any permit
based on the evaluation , the City shall require
implementation of mitigation measures
supported by the evaluation , or work with the
applicant to modify the project if mitigation
is determined not to be adequate to reduce
the impacts to a non - significant level .
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
GOALS & POLICIES ,���
RC - P - 10 Require new development to preserve mature
native trees including oak and walnut , and
trees of significant cultural or historical value
such as sycamore and arroyo willow, etc . ,
� as set forth under the Diamond Bar Tree
Preservation and Protection Ordinance . Review
the ordinance periodically and update it as
necessary to reflect current best practices .
RC - P - 11 Require that all development , including roads
and trails , proposed adjacent to riparian and
other biologically sensitive habitats avoid
significant impacts that would undermine
the healthy natural functioning of those
areas . Require that new development
proposed in such locations be designed to :
a . Minimize to the greatest extent possible or
eliminate impacts on environmentally
sensitive areas ;
b . Protect the visual seclusion of forage areas
from road intrusion by providing vegetative
buffering ;
c . Provide wildlife movement linkages to
water, food , shelter, and nesting sites ;
d . Allow wildlife and migration access by use
of tunnels or other practical means .
e . Provide vegetation that can be used by
wildlife for cover along roadsides ;
f . Avoid intrusion of night lighting into
identified areas through properly
designed lighting systems ;
g . Avoid impacts to wetlands , natural springs
and seeps and maintain access for wildlife
or when natural water areas are
removed or blocked provide a locally
suitable and equal replacement ; and
h . To the greatest extent possible , prevent
street water runoff from
flowing into waterways
Diamond Bar General Plan 2040 � RESOURCE CONSERVATiON
RC - P - 12 Support and cooperate with the efforts of othzr
local , State , and federal agencies , groups , and
private entities — including Los Angeles County,
neighboring jurisdictions , and conservation
� groups —to preserve environmentally sensitive E
hillsides , canyon areas , wildlife corridors and
riparian areas within Diamond Bar ' s SOI ,
including the Puente - Chino Hills Wildlife
Corridor, Tres Hermanos Ranch , Tonner Canyon ,
and SEA 15 to provide regional connectivity,
and to sustain the ecological function of
natural habitats and biological resources .
a . Discourage development in areas with
identified significant biological
resources , such as SEAs .
b . Discourage development in riparian
habitats , streambeds , wetlands ,
coastal sage scrub , cactus scrub ,
and native woodlands in order to
maintain and support their preservation
in a natural state , unaltered by
grading , fill , or diversion activities .
c . Preserve and restore oak woodlands and
other native woodlands that are
conserved in perpetuity with a goal of
no net loss of existing woodlands .
RC - P - 13 Utilize native and drought - tolerant plants in
landscaping for public buildings and parks
and encourage the use of native and drought -
tolerant species on private property . Develop
a list of recommended native , low-water-
use , and drought- tolerant plant species , as
well as a list of invasive species to avoid .
RC - P - 14 Partner with local school districts ,
environmental groups and volunteers to
offer environmental education programs .
RC - P - 15 Support efforts to establish mitigation bank
programs to restore habitat within Open
Space - designated and deed - restricted lands .
RESOURCE CONSERVA,TION � Diamond Bar General Plan 2040
RESOURCE CONSERVATION '°''� w �
5 . 5 WATER RESOURCES
H � � � � � � �� ��
Diamond Bar is almost entirely Services for more information
encompassed by the San Gabriel on water supply and stormwater
River Basin , which spans 713 square management ) . The Planning Area ' s -
� miles across Los Angeles and hydrology can be affected by
Orange Counties . As shown in development in the watershed that
Figure 5 - 5 , the Planning Area drains increases the area of impervious
into four sub - basins of the San surfaces and reduces vegetative
Gabriel River Basin . The northern coverage . This type of development
half of the City primarily drains can reduce the amount of area
into San Jose Creek , partially via that can be used for groundwater
Diamond Bar Creek . Most of the recharge and increase the volume
southern half of the City, as well as and speed of stormwater runoff,
the SOI , drains into Brea Canyon which can lead to increased flood
Creek . Small areas in the northeast risk and erosion of streambeds .
of the City are within the Santa Ana Development can also alter the
River Basin , draining locally into direction that water flows in a
Chino Creek . watershed , leading to changes in
the size and location of surface
The hydrofogical system is a critical Water bodies . Other changes to
component of drainage and flood surface water can come from
management in the Planning Area , sediment from construction
as well as groundwater recharge activities and erosion . All of these
and potable water supply ( see considerations are therefore
Chapter 7, Public Safety for more important issues to address as part
information on flood hazards and of the planning process when siting
Chapter 6 , Public Facilities and and designing development .
� I� � �JN� C� @�9 �, °� � R AA .AN � � � � � ��9 �
In 2014 , California passed the measurable objectives ta meet the
Sustainable Groundwater sustainability goal within 20 years
Management Act ( SGMA ) , to of implementation , a planning and
provide a framework for sustainable , implementation horizon , monitoring
local groundwater management . information and protocols , and
The SGMA requires Groundwater consideration of applicable general
Sustainability Plans to be adopted plans . Diamond Bar is within the
for medium - or high - priority basins boundaries of the Main San Gabriel ,
by a groundwater sustainability Puente and Spadra groundwater
agency ( GSA ) . A Groundwater basins . Both the Main San Gabriel
Sustainability Plan must contain Basin and Puente Basins have been
a description of the setting and adjudicated , meaning they are
characteristics of the basin , exempt from the SGMA due to their
Diamond Bar General Plan 2040 � RESOURCE CONSEitVATION
proof of sustainable management . Basin , Central Basin , and Six Basins to
In order to comply with the SGMA , supplement potable water supplies .
the Spadra Basin has created a It will thus be important for Diamond
GSA and as of 2019 is developing a Bar to continue to partner with other
Groundwater Sustainability Plan . local agencies and jurisdictions ,
including the WVWD and
While the WVWD currently imports all groundwater basin management
� potable water from the Metropolitan agencies , to manage surface and
Water District of Southern California groundwater resources given the
( MWD ) , the Water District has constrained water resources of the
projects underway that will produce region .
groundwater from the San Gabriel
�t9 �`,\ �' €�� 6�� ��� �JJ !r\ 11, Il `�i 1f
Water quality in the surface and river or groundwater supply. At high
groundwater systems can be enough concentrations , runoff from
affected by point and non - point these non - point sources could impair
sources of pollution . Point sources uses of surface waters , damage
are single identifiable sources of wildlife habitats , and contaminate
pollution , such as a pipe or a drain , groundwater sources .
and can be agencies , businesses , or
other parties discharging directly to BY protecting and improving
a water body. The National Pollutant the quality of its surface and
Discharge Elimination System ( NPDES ) groundwater bodies , the City can
is a federal program that regulates help reduce the amount of energy
point sources of pollution . The City spent treating water before it is used ,
of Diamond Bar stormwater system and ensure the health of habitats
is regulated by the NPDES Municipal and ecosystems . Steps that the
Separate Storm Sewer System ( MS4 ) City can take include addressing
permit for Los Angeles County . sources of non - point source pollution
related to development and the
Non - point pollution comes from transportation system , educating
many diffuse sources , and generally residents about water consumption
results from runoff, drainage , and stormwater pollution prevention ,
seepage , or hydrologic modification . and working with other agencies
Activities common to life in Diamond and organizations to protect natural
Bar such as driving and lawn groundwater recharge areas from
maintenance produce non - point contamination .
source pollutants that can enter
surface water or groundwater
through runoff . Stormwater runoff
during storm events , and runoff
from irrigation and other urban
uses of water carry contaminants
such as gasoline , oil , pesticides ,
herbicides , and fertilizer into the
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
Figure 5 . 5 Watersheds and Surface Water
�
� ` i .,,\ t., o�`� 00 eu'�-,, � , -
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— 1--- - ----- - - � � �
y , , _ -- ------1--- -- - - --- �
i Y ^ � ^ j i �. ;�'' � � � `� � �'..., � Sources: Esri , USGS , NOAA
Highways — — � Surface Water Carbon Creel< Lakes/Ponds
Ramps I _ �' � Watershed (HU8) Lower San Jose Creel< � _ J� City of Diamond Bar
— Major Roads � Watershed (HU 10) Upper Chino Creel< amm_ v � Sphere of Influence
Local Roads Subwatersheds � HU I 2� Upper San Jose Creel< , I County Boundary
--�---r Railroads Brea Creel<-Coyote Creel<
Source: Ciry of Diamond Bar 2019; LosAngeles County GIS Data, o o.3�s o.�s is �
2016; National Hydrography Dataset, 201 b; Dyett & Bhatia, 2019 MILES
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION
WATER RESOURCES
See Chapter 2 : Land Use and Economic Development for
policies regarding water use and distribution .
�� �� d�a � �
� RC - G -7 Protect waterways— including creeks , riverines ,
artesian springs , seeps , and wetlands— and
watersheds in Diamond Bar from pollution and
degradation as a result of urban activities .
RC - G - 8 Protect natural groundwater recharge areas
and regional spreading grounds .
RC - G - 9 Conserve naturai open spaces , biological
resources , and vegetation to
promote groundwater recharge .
RC - G - 10 Minimize the consumption and waste of
potable water through water conservation
and use of reclaimed water.
RC - G - 11 Work with regional organizations and other
jurisdictions to manage groundwater
resources of the San Gabriel Valley Basin .
RC - G - 12 Pursue methods to control , capture , and reuse
stormwater runoff for the purposes
of groundwater recharge and
local water recovery .
i
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1
I
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i
;
;
�
RESOURCE CONSERYATION � Diamond Bar General Plan 2040
GOALS & POLICIES ���r► � ,�
� CJLI � EES
Water Conservation
RC - P - 16 Coordinate with local water agencies to
encourage and expand The use of reclaimed
water, stored rainwater, or household gray
� water for irrigation and other appropriate
uses and consider construction of dual water
systems , where feasible , for development
RC - P - 17 Continually evaluate and upgrade the
efficiency of City irrigation systems ,
prioritizing the use of reclaimed water .
RC - P - 18 Carry out a comprehensive public outreach
program to educate residents and
businesses about water conservation ,
stormwater pollution prevention , and water
reuse opportunities and advantages .
RC - P - 19 Require new development to reduce the
waste of potable water through the
use of drought -tolerant plants , efficient
landscape design and application ,
and reclaimed water systems .
RC - P -20 Require the implementation of the latest water
conservation technologies into
new developments .
RC - P - 21 Require builders to provide information to
prospective buyers or tenants within
the City of Diamond Bar regarding
drought- tolerant planting concepts .
RC - P -22 Require the use of mulch in landscape areas
to improve the water holding capacity
of the soil by reducing evaporation and
soil compaction in accordance with the
standards set forth by state law and the City ' s
Water- Efficient Landscape Ordinance .
RC - P - 23 Continue fio partner with other local agencies
to manage surface and groundwater
resources through the implementation
of the Walnufi Valley Urban Water
Management Plan and regional watershed
and groundwater planning effiorts .
Diamond Bar General Plan 2040 � RESOURCE C� ONSERVAT90N
Water Quality
RC - P - 24 Protect and , where feasible , enhance or restore
the City ' s waterways and drainages ,
preventing erosion along the banks ,
removing litter and debris , and promoting _
� riparian vegetation and buffers .
RC - P - 25 Control and improve the quality of stormwater
entering local water bodies by requiring
new development to incorporate best
management practices ( BMPs ) , and Low
Impact Development ( LID ) strategies that
support on - site retention , detention , and /
or treatment of stormwater through means
such as infiltration , evapotranspiration ,
biofiltration , and rainfall harvest and use .
RC - P -26 Require the implementation of a stormwater
pollution prevention plan ( SWPPP ) , and
inspection by a Construction General Permit
Qualified SWPPP Practitioner ( QSP ) , during
construction and post construction to limit
land disturbance activities such as clearing
and grading and cut - and - fill ; avoid steep
slopes , unstable areas , and erosive soils ; and
minimize disturbance of natural vegetation and
other physical or biological features important
fio preventing erosion or sedimentafiion .
RC - P - 27 Require that post - development peak
stormwater runoff discharge rates do not
exceed the estimated pre - development
rate and that dry weather runoff from new
development not exceed the pre - development
basefine flow rate to receiving water bodies .
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
RES � U RCE CONSERVATION � � �+ !�=-��
5 . 6 AIR QUALITY
Air quality is often understood as percent of emissions in the Air
a regional issue , as the land use , Basin . Additionally, the Air Basin
circulation , and growth decisions also experiences high levels
made by individual communities of fine particulate matter. The
inevitably affect regional air quality . extent and severity of pollutant
� The City of Diamond Bar is located concentrations in the Air Basin is
within the South Coast Air Basin a function of the area ' s natural
( Air Basin ) , which consists of the physical characteristics ( weather
entire Orange and Los Angeles and topography ) and man - made
counties , and the western , non - influences ( development patterns
desert portions of San Bernardino and lifestyle ) . Factors such as wind ,
and Riverside Counties , in addition sunlight , temperature , humidity,
to the San Gorgonio Pass area in rainfall , and topography all affect
Riverside County . The South Coast the accumulation and dispersion of
Air Quality Management District pollutants .
( SCAQMD ) is the air pollution control
agency for the Air Basin , and it gased on the overall air quality
adopts air quality management trends of the Air Basin , the largest
plans ( AQMP ) to achieve air quality source of emissions impacting air
standards in the Air Basin . The quality in Diamond Bar comes from
district includes Orange County, mobile sources , particularly given
most of Los Angeles County, the presence of the SR - 57 and
and the western porfiions of San SR - 60 freeways in the community .
Bernardino and Riverside counties . Ensuring air quality for individual
sites will mean assessing and
The Air Basin is one of only mitigating the potential impacts of
two areas in the country with specific pollutant sources such as
extreme nonattainment levels the freeways . At the citywide and
for the federal ozone standard , regional levels , the most promising
as indicated in Table 5 - 3 . As of actions to improve air quality would
2012 , mobile sources , including be to not only mitigate emissions
cars , trucks , boats , and planes from stationary sources , but to also
contributed to approximately 88 reduce vehicle miles traveled ( VMT ) .
Diamond Bar General Plan 2040 � RESOURCE CONSERVATBOId
i _. � �. 'cr �- � `�. �w� 'ai% '�
Table 5 - 3 : South Coast Air Basin Attainment Status
( Los Angeles County)
• • • . . . . . . . . . . . . . .
03 ( l - hour standard ) N /Al Non - attainment - Extreme
03 ( 8 - hour standard ) Non - attainment - Extreme Non - attainment
6 CO Attainment Attainment �
NO2 Attainment Non - attainment
S02 Attainment Attainment
PM10 Attainment Non - attainment
PM2 . 5 Non - attainment Non - attainment
Lead Non - attainment Non - attainment
Visibility Reducing Particles N /A Unclassified
Sulfates N /A Attainment
Hydrogen Sulfide N /A Unclassifed
Vinyl Chloride N /A N /A2
Notes :
l . The NAAQS for 1 - hour ozone was revoked on June 15 , 2005 , for all areas except Early
Action Compact areas .
2 . In 1990 the California Air Resources Board identified vinyl chloride as a toxic air
contaminant and determined that it does not have an identifiable threshold . Therefore ,
the California Air Resources Board does not monitor or make status designations for this
pollutant .
. . . . � .
- • � • • • • - • - - • - . • - • • - • • • • •
• - • - - • - • • • • • - • • - • • . • - • •
• - • � - - • - • - - • • • • - • • - • • •
- - • - - - • - • • • - • • • - • • •
- � � • • � • - • • • • • • - � • • • • • -
• • - • • • � • • • - • • e - • e • - • • • • -
• - • • • - • • - • • • - • • • - • - � • - • • •
• • - - • � • - - • - ' � - • • - • -
• • - • • • • - - • • - • - ' • • - •
- • • • • • - - • � • • - - • • - � - •
' • - • • • - ' • • - • • - - • • • - � • • •
' - • - i � � • ' ' i • - - - • • • - • - • - • -
• • - • • • • • • • • � � • - • • • � • • • ' :
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
GOALS & POLICIES � � ,�
AIR QUALITY
See Chapter 2 : Land Use and Economic Development for
policies regarding land use and development patterns . See
Chapter 4 : Circulation for policies regarding the reduction
of VMT and multi - modal transportation . See Chapter 8 :
Community Health for policies regarding energy efficiency
� and conservation . �
GOALS
RC - G - 13 Protect the City ' s air quality and support efforts
to protect and improve regional air quality.
RC - G - 14 Aim for a diverse and efficiently - operated local
and regional ground transportation system
that reduces VMT and generates the
minimum amount of pollutants feasible .
POLI � � �; ��
RC - P -� � Encourage new development to minimize
impacts on air quality through
the following measures :
a . Use of building materials and methods that
minimize air pollution .
b . Use of fuel - efficient heating equipment ,
and other appliances , such as water
heaters , swimming pool heaters ,
cooking equipment , refrigerators ,
furnaces , boiler units , and low or zero -
emitting architectural coatings .
c . Use of clean air technology beyond what is
required by South Coast Air Quality
Management District ( SCAQMD ) ,
leveraging State and local funding sources .
RC - P - 29 Conserve natural open spaces , biological
resources , and vegetation , recognizing
the role of these resources in the reduction
and mitigation of air pollution impacts , and
the promotion of CO2 sequestration .
RC - P - 30 Ensure that new development projects are
designed and implemented to be
consistent with the South Coast Air
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION
Quality Management Plan .
RC - P - 31 To the extent practicable , maintain a system of
air quality alerts ( such as through the City
website , internet , e - mail to City employees ,
and other tools ) based on SCAQMD forecasts .
� RC - P - 32 Cooperate with the ongoing efforts of the U . S . -
Environmental Protection Agency ( EPA ) ,
SCAQMD , the Southern California Association
of Governments ( SCAG ) , and the State of
California Air Resources Board in improving
air quality in the regional air basin .
RC - P - 33 Consult with SCAQMD when siting new facilities
with dust , odors , or Toxic Air Contaminant ( TA � )
emissions to avoid siting those facilities near
sensitive receptors and avoid siting sensitive
receptors near sources of air pollution . Require
proposed land uses that produce TACs to
incorporate setbacks and design feat � res
that reduce TACs at the source to minimize
potential impacts from TACs . For new or
modified land uses thai have the potential to
emit dust , odors , or TACs that would impact
sensitive receptors require the business owners
to notify the SCAQMD , and residents and
businesses adjacent to the proposed use
prior to business license or building permit
issuance . ( New from SCAQMD Guidance )
Exampies of facilities that may emit TACs as
identified by the SCAQMD incivde dry
cleaners, gas stations , auto body shops,
furniture repair shops , warehovses, printing
shops , landfilis, recyciing and transfer
stations, and freeways and roadways .
Refer to SCAQMD guidance for the most
current list of facilities that may emit TACs .
RC - P - 34 For new or modified land uses that have the
potential to emit dust , odors , or TACs that
would impact sensitive receptors require
the business owners to notify the SCAQMD ,
and residents and bUsinesses adjacent
to the proposed use prior to business
license or building permit issuance .
Sensitive receptors inciude residences,
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
GOALS & POLICIES � w �
schools, childcare centers, playgrounds,
parks and other recreational
facilities, nursing homes , hospitals,
and other medical care facilities .
RC - P - 35 Require new residential developments and
other sensitive uses ( e . g . schools , daycare
� centers , playgrounds , and medical facilities )
within 500 feet of a freeway to prepare an
air quality study of the site that evaluates
potential impacts of air pollution on sensitive
receptors and associated health risks and
identifies measures to feasibly mitigate any
impacts to protect the health of residents .
The 500 - foot buffer is based on a California
Air Resources Board recommendation
to avoiding the siting of sensitive uses
within 500 feet of a freeway. Because of
freeways are so integrated into Diamond
Bar ' s landscape , it may be difficult to
prevent the siting of sensitive receptors
near the freeways in the future; thus,
mitigation measures would be needed for
such development. Mitigation measures
may include screens, ventilation /air
filtration systems , landscape buffering and
vegetation, building design measures that
locate operable windows, balconies and
building air intake away from the emission
sovrce , and site design measures including
the incorporation of open spaces between
buildings to reduce air pollution build up .
RC - P - 36 Promote and support available SCAQMD
incentives and funding mechanisms
that encourage retrofits to reduce air
quality impacts for existing sensitive
uses within 500 feet of a freeway.
RC - P - 37 Require construction and grading plans to
include State and AQMD - mandated
measures to the maximum extent possible
fugitive dust and pollutants generated by
construction activities and those related
to vehicle and equipment cleaning ,
fueling and maintenance as well as mono -
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION
� . _ �. .� � v �� � ��� -,� ��� �
nitrogen oxides ( NOx ) emissions from
vehicle and equipment operations .
RC - P - 38 Facilitate communication among residents ,
businesses and SCAQMD to quickly resolve
air pollution nuisance complaints .
p RC - P - 39 Address impacts of new development ~��
projects that may individually have -
insignificant impacts on air quality, but
which together with other projects in the
Planning Area may be cumulative significant
by establishing mitigation programs
at the area wide or citywide level .
RC - P - 40 Promote transit- oriented , walkable , compact
development patterns , the provision
of non - polluting transportation
alternatives , and transportation
demand management measures to
reduce total vehicle miles traveled .
RC - P - 41 Promote expansion of all forms of mass transit
to employment , entertainment , and other
major destinations in Los Angeles , Riverside ,
Orange , and San Bernardino counties .
Support public transit providers in efforts to
increase funding for transit improvements
to supplement other means of travel .
RC - P - 42 Seek grants and other external funding
opportunities to convert the City fleet
to zero emissions vehicles over time and
in a manner that is fiscally neutral in
comparison to conventional fuel vehicles .
RC - P - 43 Design traffic plans , including suggested
truck routes , to minimize diesel truck
idling and the exposure of residential
neighborhoods and sensitive
receptors to diesel truck traffic .
RC - P - 44 Reduce paved road dust emissions through
targeted street sweeping of roads subject
to high traffic levels and silt loadings .
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
RESOURCE CONSERVATION � y �
5 . 6 CULTURAL RESOURCES
� � � � � � � � � � � � 7i � � �� �
The Gabrielino often interacted through marriage ,
Diamond Bar and the surrounding trade , and warfare . The seasonal
� area is located within Gabrielino availability of water and plant �
( Gabrieleno , Tongva , or Kizh ) and animal resources dictated
territory. The Gabrielino were seasonal migration rounds with
among the wealthiest , most more permanent villages and base
populous , and most powerful of camps being occupied primarily
the aboriginal ethnic nationalities during winter and spring months .
in Southern California . Named In the summer months , the village
after the San Gabriel Mission , the populations divided into smaller
Gabrielino occupied sections of units that occupied seasonal food
Los Angeles , Orange , and San procurement areas . The more
Bernardino counties , and the islands permanent settlements tended
of San Nicolas , Santa Catalina , to be near major waterways and
and San Clemente . The Gabrielino food sources and various secular
subsisted on a variety of resources and sacred activities , such as food
in several ecological zones . Lithic production and storage and tool
tools such as arrow points and manufacturing , were conducted at
modified flakes were used to hunt these areas .
and process animals . A variety of European contact with the
ground stone grinding implements , Gabrielino that inhabited the City
such as the mortar, pestle , mano , and surrounding region began in
and metate , were used to prepare 1542 when Spanish explorer, Juan
food . Rodriguez Cabrillo , arrived by
The settlement patterns of the sea during his navigation of the
Gabrielino , and other nearby California coast . More explorers
groups such as the Juaneno and followed , including Sebastian
Luiseno , were similar and they Vizcaino in 1602 , and Gaspar de
Diamond Bar General Plan 2040 � RESOURCE CONSERVATIOfV
Portola in 1769. In 1771 , Mission San large herds of cattle , as well as
Gabriel was established and it abundant walnut tree orchards
slowly integrated Gabrielinos from and scattered oak trees . The
the surrounding region . By 1833 , Christiana Oil Corporation and the
the California missions had been Capital Oil Company, a subsidiary
secularized and most Gabrielinos of the Transamerica Corporation ,
a became laborers for the gentry purchased 8 , 000 acres of Brea
� class . Canyon for $ 10 , 000 , 000 , which
encompassed the Ranch and the
The City of Diamond Bar Ranch Headquarters Compound .
In 1840 , the governor Juan Alvarado Their pfan was to develop a master-
deeded 4 , 340 acres , including parts planned community that would
of Diamond Bar, to Jose de la Luz eventually become home to more
Linares . Linares established Rancho than 50 , 000 people .
Los Nogales , or " Ranch of the A master plan was adopted in 1958
Walnut Tree , " with this Mexican land and work began immediately on
grant . After he died , Linares ' widow utilities and infrastructure . The plan
sold a choice portion of the ranch included a central business district ,
to Ricardo Vejar. two shopping districts , and parks
Starting in 1864 , the land that including an 18 - hole golf course .
encompassed the original Rancho Education was also considered a
Los Nogales changed ownership very important aspect of the plan .
several times . One such owner was The first model homes were built
Louis Phillips , a young livestock in 1960 in the north end of the City
owner who subdivided portions and the development continues
of the ranch for sale . Frederick E . to exist to this day . The City of
Lewis II purchased 7, 800 acres of Diamond Bar incorporated in 1989,
the original ranch in 1918 and soon becoming Los Angeles County ' s
thereafter formed the Diamond 86th city .
Bar Ranch and registered the
" diamond over a bar " branding
iron with the California Department
of Agriculture . This would later
become the symbol for which the
City of Diamond Bar was named .
In 1943 , Lewis sold the Ranch to the
Bartholomae family, who continued
to maintain it as a successful cattle
ranch for the next 13 years . William
A . Barfiholomae was president of
the family oil company and in 1956
sought to make a more lucrative use
of the land . At that time the Ranch
looked much as it did in 1840 ,
wifih grassy rolling hills supporting
RESOURCE COPISERVATION � Diamond Bar General Plan 2040
RESOURCE CONSERVATION �. � ��
CULTURAL RESOURCE � of historic places . The register is
overseen by the National Park
Cultural resources include sites , Service and requires that a resource
buildings , structures , or objects eligible for listing on the register
that may have archaeological , meet one of several criteria at
historical , cultural , or scientific the national , State , or local level ,
significance . Cultural resources and also retain sufficient physical
include historic resources , �
integrity of those features necessary -
� archaeological resources , to convey historic si nificance .
tribal cultural resources , and g
paleontological resources . All of The California Office of Historic
these cultural resources provide Preservation ( OHP ) offers four
a link to the people and the different registration programs ,
cultures of the past and can enrich including the California Historical
Diamond Bar ' s sense of heritage Landmarks , California Points of
and identity . Historical Interest , California Register
of Historical Resources ( CRHR ) ,
Historic Resources and the NRHP. Each registration
A historic resource is a building , program is unique in the benefits
structure , object , prehistoric offered and procedures required .
or historic archaeological site , If a resource meets the criteria for
or district possessing physical registration , it may be nominated
evidence of human activities over by any individual , group , or local
45 years old . Historic resources are Jovernment to any program at
often designated and listed on the any time . Resources do not need
national , State , or a local register, to be locally designated before
making them eligible for certain being nominated to a State
protections or other benefits . The program nor do they need to
National Register of Historic Places be registered at the State level
( NRHP ) is the nation ' s official list before being nominated to the
National Register . The California
Register includes buildings , sites ,
structures , objects , and districts
significant in the architectural ,
engineering , scientific , economic ,
agricultural , educational , social ,
political , military, or cultural annals
� of California . Resources listed in the
National Register are automatically
listed in the CRHR .
As of 2019, there are no registered
historic resources in the City of
Diamond Bar . Two built environment
resources have previously been
identified in the City, including
a small segment of the Union /
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION
Southern Pacific Railroad and a or otherwise determined to be
ground water tank / reservoir. The significant by the lead agency of
railroad segment was originally an environmental review process .
recommended eligible for the A search of the Native American
NRHP in 1999, but in 2009 was Heritage Commission ( NAHC )
recommended ineligible at the Sacred Lands File was positive for
local , State , and national levels due the Planning Area . Additionally, the ,_
� to loss of integrity. The water tank / long heritage of Native American
reservoir has been found to be tribes in the region suggests that
ineligible for the NRHP but has not the presence of tribal cultural
been evaluated at the State or local resources is a possibility that future
levels . These resources are described development will need to consider.
in Table 5 - 4 . The identification of firibal cultural
resources can be supported by the
Archaeoiogicaf Resources NAHC ' s records but can only be fully
The National Parks Service defines determined through consultation
archaeological resources as any with local Native American
material remains of human life tribes . Thus , maintaining good
or activities that are at least 100 communication with locai tribes will
years of age and are capable of be critical to ensuring that resources
providing scientific or humanistic are respectfully preserved .
understandings of past human
behavior, cultural adaptation , and
related topics . As of 2019, seven
archaeological resources have been
recorded within City limits , including
five prehistoric archaeological
sites , one prehistoric isolate , and
one historic archaeological site .
An additional four resources were
found within a half- mile radius of
the City, including a prehistoric
archaeological site , two historic
isolates , and one prehistoric isolate .
Archaeological resources are
described in Table 5 - 4 .
Tribal Cultural Resources
A tribal cultural resource is a site ,
feature , place , cultural landscape ,
sacred place , or object with cultural
value to a tribe that is included
or determined to be eligible for
inclusion in the California Register
of Historic Resources , included in a
local regisfier of historical resources ,
RESOURGE CONSERVATION � Diamond Bar General Plan 2040
�
RESOURCE CONSERVATION r � �
Table 5 - 4 : Previously Recorded Cultural Resources
- . - � - . . � . - . .
� - . . - . .
. .
� e
� � . , � .. . " � � . . . . � .
19 - 189748 Built- environment resource consisting of a 2010 Not eligible
ground water tank / reservoir
19 - 186112 Built- environment resource consists of a 1999 N /A
segment of the Union /Southern Pacific
Railroad .
19- 002805 Prehistoric archaeological site consists 2000 N /A
of milling tools , discoidals , stone balls ,
choppers , hammerstones , and cores .
CA - LAN - 1704 Prehistoric archaeological site consists 1980 N /A
of surface scatter containing a chopper,
mano fragment, metate fragment and a
possible hammerstone .
CA - LAN -852 Prehistoric archaeological site consisting 1976 N /A
of two cores and one flake
CA - LAN - 853 Prehistoric archaeological site consisting 1976 N /A
of chert cores and chert flakes
19- 1Q1010 Prehistoric isolate consisting of a mano 2013 Not eligible
CA - LAN - 3771 Historic archaeological site/ landscape 2008 Not eligible
component consisting of more than 15
eucalyptus trees and a concrete debris
concentration associated with the historic
Diamond Bar Ranch Headquarters
CA - LAN - 854 Prehistoric archaeological site consisting 1976 N /A
of a small lithic scatter
- ' -
CA - LAN - 1414 Prehistoric archaeological site consisting 1988 N /A
of several artifacts ( flake , granitic facial
mano and granitic pestle fragment )
found in the escarpment of an
embankment
19- 100794 Historic isolate consisting of fve pieces of 2010 Not eligible
white earthenware flatware .
19- 100795 Nistoric isolate consisting of seven pieces 2010 Not eligible
of white earthenware flatware .
19- 101223 Prehistoric isolate which consists of a 2000 Not efigible
schist, basin metate fragment
Source : SCCIC , 2016
Diamond Bar General Plan 2040 � RESOURCE CONSERVATION
_,. � .� .a _ � -� e � �
Paleontological Resources within the City also have exposures
Paleontological resources are the of the marine late Miocene - aged
fossil remains or traces of past life Puente / Monterey Formation with
forms , including both vertebrate potential for fossil deposits .
and invertebrate species , as well Paleontological records searches
as plants . The City of Diamond Bar have indicated that one vertebrate
� is underlain by marine - derived fossil locality exists within the �
sediments that are thousands of boundaries of the City and that
feet thick as part of the fossiliferous several other localities from the
Puente Formation . Low lying terrain same sedimentary deposits occur
areas ( such as Brea Canyon and nearby . While shallow excavations
San Jose Creek ) consist of younger into younger Quaternary Alluvium
Quaternary Alluvium derived from deposits within the City are not
the drainages , which are not known likely to yield paleontological
to contain significant vertebrate resources , deeper excavations
fossils in the uppermost layers . within the City ( that extend down
However, at shallow depths there into older Quaternary deposits
are older sedimentary deposits or into the Puente Formation )
that have the possibility of yielding have the potential to encounter
significant vertebrate fossils . paleontological resources .
Elevated portions of the Puente Hills
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
GOALS & POLICIES � � � �
CULTURAL AND HISTORIC RESOURCES
� �:A � i�_, �
RC - G - 15 Protect and enhance Diamond Bar ' s historic ,
cultural and archaeological resources for the
educational , aesthetic , and environmental
� contribution that they make to Diamond
Bar ' s identity and quality of life .
� � k. � t� � l� �
Historicai Resources
RC - P - 45 Support property owners in seeking registration
of eligible historic structures and sites in
registration programs such as California ' s
Historical landmarks , California Points
of Historical Interest , California Register
of Historical Resources , and the
National Register of Historic Places .
Archaeological Resources
RC - P - 46 Establish a procedure for the management of
archaeological materials found on - site during a
development , including the following provisions :
a . if significant resources are known or
suspected to be present on a site , require
that a qualified archaeologist conduct
monitoring of building demolition and /
or construction grading activities .
b . If materials are found on - site during
construction activities , require that work
be halted until a qualified archaeologist
evaluates the find and makes a
recommendation for the preservation
in place or recovery of the resource .
RC - P - 47 Seek to preserve discovered archaeological
resources in place to maintain the
relationship between the artifacts and their
archaeological context, where feasible .
RC - P - 48 Preservation can be achieved through
measures such as planning construction to
avoid archaeological sites , incorporating sites
Diamond Bar General Plan 2040 � RESOURCE CONSERVATEON
within open space areas , capping the site prior
to construction , and permanently protecting
the site using a conservation easement .
Tribal Cultural Resources
RC - P - 49 Establish development processes to avoid the
� disfurbance of tribal cultural resources .
Where possible , seek to preserve resources in
place , exploring opportunities of permanent
protection of the resources where feasible .
RC - P - 50 Conduct project - specific Native American
consultation early in the development
review process to ensure adequate data
recovery and mitigation for adverse impacts
to significant Native American sifies . Ensure
that City staff and local developers are
aware of their responsibilifiies to facilitate
Native American consuitation under
Senate Bill 18 and Assembly Bill 52 .
Paleontological Resources
RC - P - 51 Establish a procedure for the management of
paleontological materials found
on - site during a development ,
including the following provisions :
a . If materials are found on - site during
grading , require that work be halted until
a qualified professional evaluates the find
to determine if it represents a significant
paleontological resource , and makes a
recommendation for the preservation
in place or recovery of the resource .
b . If the resource is determined to be
significant , the paleontologist shail
supervise removal of the material
and determine the most appropriate
archival storage of the material .
c . Appropriate materials shall be prepared ,
catalogued , and archived at the
applicant ' s expense and shall be retained
within Los Angeles County if feasible .
RESOURCE CONSERVATION � Diamond Bar General Plan 2040
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PUBLIC FACILITIES & SERVICES . 1
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This chapter is closely related 2040 . The Community Character
to Chapter 2 , Land Use and and Placemaking Chapter
Economic Development , Chapter addresses the park provision as part
3 , Community Character and of the public realm . The hazards
Placemaking , Chapter 7, Public to public safety and threats to
� Safety, and Chapter 8 , Community public health identified in Chapter €
Health and Sustainability . The 7 also inform the provision of
Land Use diagram in Chapter 2 public services in this element .
establishes existing and potential Lastly, the availability of parks
locations of different facilities , and public services are also a key
including public parks and consideration for public health
community facilities . The buildout in the Community Health and
capacity in Chapter 2 can be used Sustainability Chapter.
to anticipate the level of public
services that will be needed by
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Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVICES 6 - 3
PUBLIC FACILITIES & SERVICES • 1
to a mile . Amenities typically • Mini Neighborhood Parks .
include community buildings , Mini Neighborhood Parks are
playground equipment , picnic Neighborhood Parks that range
areas and picnic shelters , from a quarter acre to five
0 barbeques , lit sports fields acres in size . Mini Neighborhood �
and courts , public restrooms , Parks may serve neighborhoods
concessions , and on - site within the same range as
parking . Major events may be Neighborhood Parks but are
hosted in Community Parks that best used to meet limited or
attract residents from throughout specialized recreation needs .
the city . Mini Neighborhood Parks can
provide landscaped public
• Neighborhood Parks . use areas , scenic overlooks ,
Neighborhood Parks are the trail linkages , and facilities to
basic unit of the park system serve a concentrated or limited
and are typically found in population group such as youth
residential neighborhoods . or seniors .
They typically range from 5
to 20 acres in size and are � Specialty Parks . Specialty
intended to serve surrounding Parks provide for a single use or
neighborhoods within a 0 . 75 - activity and can include dog
mile to one - mile radius . Ease parks , trailheads , skate parks ,
of access and walkability to and sports complexes . They may
neighborhoods served are be standalone facilities , or be
critical factors in siting and located within or adjacent to
designing Neighborhood Parks . other parks .
Amenities typically include
playgrounds , picnic tables and park Inventory
shelters , barbeques , sports fields
and courts , public restrooms , Figure 6 - 1 provides an inventory of
and on - site parking . park acreage by classification of
the existing parks and recreation
facilities within the city, including
both public and private facilities .
Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVICES 6 - 5
PUBLIC FACILITIES & SERVICES . 1
Parkland Standard and Mini Neighborhood parks . As
This Chapter establishes a parkland / shown , there are still residential
recreational space standard of 5 . 0 areas outside of the service radii
acres per 1 , 000 residents , consistent of existing parks , and even more
with the Quimby Act . The Quimby residential areas outside of a
Act allows the City to establish this � 0 - minute walking distance . As the
city continues to develop , there will
� standard as a means of requiring �
subdivision developers to provide be opportunities to expand the park -
a dedication of land or in lieu fees system and improve park access for
to ensure that the existing ratio all members of the community .
of parkland acres per resident is
maintained even as the number Other Public Recreation Facilities
of residents increases with new In addition to parks , Diamond
development . As shown in Table Bar residents have access to
6 - 1 , there are 151 . 9 acres of public recreational open space areas and
Community and Neighborhood the County of Los Angeles - operated
parkland in Diamond Bar in 2019, Diamond Bar Golf Course . Open
resulting in a ratio of 2 . 6 acres of space areas including Sandstone
public parkland per 1 , 000 residents . Canyon and the areas surrounding
While the Country Park functions Summitridge and Pantera parks are
similarly to a Community Park within accessible via the city ' s continually
the Country Estates neighborhood , expanding trail network . These
the 134 . 9 acres of parkland from areas constitute hundreds of acres
Country Park cannot count towards of City- owned open space that will
the parkland ratio as it is a private be preserved in perpetuity .
amenity . The parkland standard is
established to maintain the ratio The Diamond Bar Golf Course which
of parkland to residents as the city is owned and operated by the
continues to grow. County of Los Angeles occupies
172 acres near the western border
Parkland Distribution of the city . The public golf course
draws users from around the
As of 2019, parkland is distributed community and beyond , and offers
fairly evenly among residential � g holes and clubhouse facilities .
neighborhoods in the city . As discussed in Chapter 2 , Land
However, not every residence is Use and Economic Development ,
within walking distance of a park , the golf course is covered by
and many residents face barriers , the Community Core Overlay
such as highways , steep terrain , designation . Should the Golf Course
or fences between their homes cease to operate , that designation
and the nearest park . Figure would require a master plan for
6 - 1 shows five - and 10 - minute the entire golf course property to
walksheds , as well as 0 . 75 - mile ensure the orderly and cohesive
neighborhood service radii , for the implementation of its reuse .
city ' s Community, Neighborhood ,
Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVICES 6 - 7
PUBLIC FACILITIES & SERVICES • 1
� RANI� `�=,
Diamond Bar has a trail system Master Plan identified a number
spanning 5 . 44 miles , summarized of ineasures to improve trail
in Table 6 - 2 and shown in Figure facilities , including the installation
6 - 2 . Trails offer hikers and cyclists of mile markers and benches
views of natural landscapes and and programming educational
the surrounding city . As of 2019, activities . Additional trail segments �
the Summitridge Trail System is the planned within the City as identified
most comprehensive trail network in the Parks and Recreation Master
in Diamond Bar and features an Plan include the Crooked Creek Trail
extensive system of interconnected and Sandstone Canyon Trails , while
trails . The Pantera , Peterson , and trails planned within the SOI include
Sycamore Canyon Trails span the Tonner Canyon Trail and the
undeveloped , natural areas of city Schabarum Trail . These proposed
parks . Despite the wealth of existing trails are shown in Figure 6 - 2 .
trails in the city, opportunities still
exist for Diamond Bar to expand Complementing this network of
and improve its trail system and trails with connecting walking and
continue to link existing and biking paths along city streets will
future parks and pedestrian and provide Diamond Bar residents with
bicycle facilities through trails . The a more complete , accessible trail
City ' s 2011 Parks and Recreation network .
6� f� c�, G� C� ,/�� ii ' II C>> [?� �L\ I� �{� /,�� �� !1 I� il u� � f� `s� ;� E�� 1� >> � I; � Cy, f;�; e�\ ��`I `:�
Recreational facilities in Diamond Diamond Bar utilizes joint - use
Bar include a variety of privately- agreements with the local school
owned facilities such as the districts , making school facilities
Pony Baseball Fields , swim clubs available for community use under
and YMCA facilities . In addition , certain circumstances . The City
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Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVICES 6 - 9
Figure 6 - 2 Existing and Proposed Trail Network
Deane Homes
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�cy GOIFCOIIISP IP � 8 �� DRLSH�R o9 A I
a � Ci2��..1E�;sP:o� � ,re � � Pantero�
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z / /j niomeoson°ovo,kv° Ta Rr o
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m � ^ pe ����F Summitridge s o � Summitridge
� � �,oQ Park / Mini
\ � Son¢tone C� Z �, W Pt EHI(� �
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e a YanT.oi/UPPer p � 90
,\ ^ n m Maple MOIINipINIAUqE( N,y 2
� > � � Hill Paik � ' �Stardust
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Laiks[one ` 9�GN P 9Cq� �. Hill GrowPaik a
Park i / �'oy ° '�'op YMCA � � Longview
$CQI � �`93 BEILAPINEOq c pP� EVN�PO Park
Shine �o � �oe c>°�' / / South
Park i � m `2 ae�'� . �
t°
aci no Po /' '�
Ronald I e� qPATHFNOERpD qCq� �`EE� � 3 /fti`�
Reagan � � Herlta9e i � g° � �z'r�� ti �
Pork Park Country z 4e'S' , F
� commu�niri �, N� a Park � �
ee �
o s
I �ANYOryfllO 2 ��e / N
IB C�PQ LP�Q Ja t��N _ _ , . � . . ._. nrmweaff,
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i a Park ,� g �� �� �
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�
Trails City Parks Other Recreational Facilities Highways � City of Diamond Bar
L___ �
o g Y Sports/ . _ _ -- h
Existin Communit Parlc li I I
201 I Parla and Recreacion '
� Recreation Facilities Ramps � ti Sphere of InFluence
°°°°°°°°°°° Master Plan Pro osedTrails _ Nei hborhood Parl< � -
P S �� ', Golf Course -�-�-�-� Railroads County Boundary
Other Community Facilities Mini � O en S ace/
� Communicy Centers — Neighborhood Park Green ays Major Roads
E%%%// Planned Parl< Vacant NaturalAreas Minor Roads
0 0.375 0.75 I .5 �
Source: City of Diamond Bar 2019; Dyett & Bhatia, 2019 Mi�es
Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVICES 6 - 11
GOALS & POLICIES . 1
PF - P- 4 Encourage the co - location of new parks
and recreational facilities with ' � :��$• �
schools , community centers , libraries , ° .� .. � ` j � '` -
� and other public facilities to create �;� � � � z �
neighborhood focal points that �, ` ���� - �
.• .,
contribute to neighborhood identity . ` °F' ?;� �
, ,, ,;., ,-
PF - P- 5 Continue cooperative efforts with the ' „ ��� _' d�
Walnut Valley and Pomona Unified School �d� '
Districts through joint use agreements _ - J � '
for park and recreational facilities . ,� _ _ , _ . - . - , :` ��
PF - P- 6 Actively engage in Cal Poly Pomona ' s plans �.�� � - - � -- a ;
for the redevelopment of the former ����" ��'=
� j � �
i� , r. t , �
Lanterman site , and seekjoint use � �� �, .,; �uW �
t�. .t_ _
opportunities for parks and recreation � �_ J I , �_f
facilities developed on the site . � — ' �
I CITY OF DIAMOND BAR
Parks & Recreation Facilities I S K A T E F' A R K
PF - P- 7 Distribute new parks equitably through ' �
,.:�..:,�..__
Diamond Bar, striving to ensure that
residents are within a 3/4 - mile radius of a
neighborhood park or community park .
PF - P- 8 Develop and maintain a parkland
dedication requirement/ in - lieu fee
consistent with the General Plan
standard of five acres per 1 , 000
residents in Diamond Bar.
PF - P- 9 Prioritize public parkland dedication as a
condition of new residential development ,
allowing the use of in lieu fees only
where parkland dedication is not
feasible , to erisure a public park system
available to the entire community .
PF - P-10 Should Los Angeles County choose to cease
operations of the Diamond Bar Golf Course
or reduce the area of the Golf Course ,
prepare a master plan for development
that includes opportunities for public
parks comprising a range of passive
and active recreational uses to suit the
needs of Diamond Bar residents .
Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVICES 6 - 13
GOALS & POLICIES . 1
PF - P- 15 Prioritize the develop of additional
recreational facilities such as
athletic fields , hard courts , and other
� recreational facilities that respond to
� citizen needs and preferences . �
PF - P-16 Continue to provide programming and
services for seniors , including active
programs , classes , and activities and
outings , adjusting programming based
on needs and preferences , particularly
as Diamond Bar ' s residents age .
PF - P-17 Require that the recreational needs of all
children and adults , including
persons with disabilities , seniors , and
dependent adults , be addressed in
recreational facility planning efforts .
Trails
PF - P-18 Link parks , open spaces , and regional hiking
firails with a trail nefiwork . Incorporate
existing trails and bicycle and
pedestrian infrastructure , working with
willing landowners to priorifize land
acquisition where necessary . Where
possible , incorporate landscaping
and enhance natural features .
PF - P-19 Update the Parks and Recreation Master
Plan to include standards for planning ,
design , management, and maintenance
of trails and pathways within parks ,
preserves , open spaces , and rightsof- way .
Encourage the installation of amenities
such as rest areas , benches , water
facilities , hitching posts and wayfinding
signs serving trails and scenic routes that
adhere to a standard signage palette .
PF - P- 20 Maintain the Parks and Recreation Master
Plan goal of at least one mile of
recreational trails for each 10 , 000 persons .
Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVlCES 6 - 15
PUBLIC FACILITIES & SERVICES • 1
6 . 3 SCHOOLS AND COMMUNITY FACILITIES
� �. � � ��� r�;, p, �
Diamond Bar has been fortunate to ranking particularly high . WVUSD
be associated with high - performing schools within the Diamond Bar city
e schools that have bolstered its limits serve 8 , 008 students in five �
reputation as a family - friendly elementary schools , two middle �
community . Schools are thus an schools , and one high school .
important part of the city ' s cultural
landscape and a key factor Pomona Unified School District
in attracting new families and PUSD serves approximately 23 , 200
residents to the city . Diamond Bar enrolled K- 12 students within
is served by two school districts , portions of the cities of Diamond
Walnut Valley Unified School District gar, Industry, Pomona , and
( WVUSD ) and Pomona Unified Chino Hills , as well as portions of
School District ( PUSD � . Grand unincorporated Los Angeles County .
Avenue is a rough delineation PUSD schools within the Diamond
between the two districts , with Bar city limits serve approximately
areas north served by PUSD and 3 , 500 students in four elementary
areas south served by WVUSD . The schools , one middle schools , and
boundaries of the school districts one high school .
are shown in Figure 6 - 3 .
Maintaining strong partnerships with Interdistrict Trdnsfers
the two school districts , particularly Both WVUSD and PUSD have
in terms of planning for any new experienced trends of declining
facilities , and supporting the enrollment over the last decade
schools in their continued provision due in part to families in the districts
of excellent education will be an relocating . WVUSD in particular has
important consideration as the city tended to enroll a large number of
grows . students that reside outside of the
school district boundaries thanks
Walnut Valley Unified School to the District of Choice ( DOC )
District program , which allows any student
WVUSD serves approximately to attend their schools regardless
13 , 900 enrolled K- 12 students of the student ' s home address
within portions of the cities of and without seeking permission
Diamond Bar, Industry, West of their home districts . Incoming
Covina , and Walnut , as well as students that attend WVUSD but
portions of unincorporated Los reside in another school district are
Angeles County . It is one of the referred to as interdistrict transfers
top performing school districts in ( IDTs ) . Typically, IDTs are approved
the state , with Diamond Bar High based on an agreement with the
Diamond Bar General Plan 2040 � PUBLIC FAC9LITIES & SERVICES 6 - 17
Figure 6 - 3 : Schools and Other Public Facilities
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� Library School Districts Highways Water Features
� Community Centers Pomona Unified Ramps � _ J� City of Diamond Bar
� Schools/Educational Facilities �NalnutValley Unified ,--,—T Railroads �
� _, _„� Sphere of Influence
_ Public Facilities - - - - Major Roads County Boundary
Parl<s, Recreation & Open Space Minor Roads
0 0.375 0.75 I .5 �
Source: City of Diamond Bar 2019; Dyeti & Bhatia, 2019 MILES
Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVICES 6 - 19
GUIDING POLICIES • 1
PF - P -28 Explore and pursue the feasibility of
developing dedicated
community centers and
programming in Diamond Bar
a for teens , youth , and seniors . �
PF - P -29 Continue sponsoring and promoting
events and cultural activities
that bring the community
together in different locations
throughout the city .
PF - P - 30 Encourage the development of
privately- owned public spaces
and plazas in private commercial
and office complexes .
, .
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2020-2040 Diamond Bar General Plan Update � GUIDING POLICIES 6 - 21
PUBLIC FACILITIES & SERVICES • 1
Groundwater • Production from Six Basins
WVWD currently operates six will supply WVWD with
groundwater production facilities approximately 928 acre - feet of
that supply the recycled water potable water per year upon
system . This groundwater is not completion of the Pomona Basin
potable as it contains high levels of Regional Groundwater Project .
total dissolved solids and nitrates . This project includes reactivating
The following three recent projects
an existing well and constructing �
allow the WVWD to produce one new well , and is which is
potable groundwater, thereby anticipated to be complete by
reducing the need for imported the end of 2019 .
water in the future :
Recycled Water
• The La Habra Heights County �n/ VWD owns , operates , and
Water District Pipeline Project , maintains a recycled water system
completed in 2014 , delivers up to that provides irrigation water to
1 , 000 acre - feet of potable water customers throughout its service
per year from the Central Basin area , including the City of Diamond
to WVWD . This project includes gar. The County Sanitation District ' s
an inter- connection to the La Pomona Water Reclamation Plant
Habra Heights County Water supplies recycled water to WVWD
District system . for irrigating large landscape
• The California Domestic Water areas such as parks , golf courses ,
Company Project , completed in 9reenbelts , and school grounds .
2016 , consists of a new pipeline Future uses will generally fit these
and pump station project that categories , with potential demands
will connect to the California for toilet flushing in high - rise
Domestic Water Company buildings and industrial use . Local
system . Annual deliveries to groundwater supplies may also
WVWD consist of 2 , 500 acre - feet help WVWD expand the current
of potable water. Water stored in recycled water system . This system
the Main San Gabriel Basin will is completely separate from the
supplies potable water for this potable system and helps reduce
project . potable water demand .
As of 2019, however, recycled
� water supplies are maxed out
�- �' , v ��G CLFo during peak summer months .
` Therefore , large - scale expansion
�.�� ,��1 �-�� �,�'��� �q<<� � of the system is not feasible until
-� ,,:,,*a o�.nry
` i: � 3� 51oei ,s" -� additional recycled water supplies
y k 1. �. , . ... � .
� ` �` � � ' � ��-- become available . Moving
� � ��� . � `�� �'t-,Y �� , _. � `�� � � forward , the City of Diamond Bar
� �" N ' �'�F�"r�`` r t � ��' � �- :� �M can act as an important partner
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(�'�' "� ..v �' 1'i'�-`�'s-��.t"� �na.,�1 rr �., `_ T.�, .�. :
� �`� � -�� ��- � " 4r > and usage .
Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVICES 6 - 23
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PUBLIC FACILITIES & SERVICES • 1
�'�'� f,t�� �`� �ii ��� �4��' i�� `�i I� 6�
Los Angeles County provides and manhole and pump station
wastewater collection and inspections . Any structural or
treatment services under contract maintenance deficiencies in the
to the City of Diamond Bar. The sewer system identified during
Los Angeles County Public Works the audit are reported with a
Department ( LACPWD ) provides recommended repair. In 2015 , �
operation and maintenance no sewer capacity issues were �
services on the local collection identified . However, the City
system , while Los Angeles County regularly pumps wastewater at the
Sanitation District ( LACSD ) provides intersection of Clear Creek Canyon
operation and maintenance Road and Diamond Bar Boulevard
services on the trunk sewers and to overcome system deficiencies ,
wastewater treatment services . which may warrant further
The city and surrounding areas fall investigation in the future .
under the LA County Sanitation
District No . 21 . While the system The City and LACPWD have been
is generally in good order, as effective at keeping the number
described below, there has not and total volume of sanitary system
been an area - wide sewer study overflows ( SSOs ) within the city
completed in the last 10 years that below the Statewide median , with
identifies all deficiencies within the anly three SSOs reported in each of
City ' s sewage infrastructure system . the last three years . In addition , the
City rarely receives complaints from
Sanitary Sewer System citizens regarding wastewater and
Infrastructure SSO . The SSOs are typically related
to debris , root intrusion , and /or fats /
The local collection system oil /grease causing the overflow
contains 11 pump stations and 162 issues . In addition , there are
miles of sewer mains within the occasional SSOs related to pump
city . According to City Staff , the station failures .
local collection system is in good
standing with no known major
system deficiencies .
Los Angeles County Public Works
The local collection system is shown _ _
on Figure 6 - 4 . The local system
of sewer lines and pump stations
feed two trunk sewer lines that
convey wastewater to a LACSD
treatment facility . LACPWD has
been completing systematic annual
audits of the collection system ,
including closed - circuit television
, . . . . ,. _ _ _ . :;. . , .: �.__ .. - . . , ..., .
( CCTV ) inspections of sewer lines ,
Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVICES 6 - 27
Figure 6 - 5 : Existing Storm Drain System
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Storm Mains • Major Roads L _ J� City of Diamond Bar
Open Channel Local Roads � _ __i Sphere of Influence
Highways ' Railroads , County Boundary
Ramps Water Features
0 0.375 0.75 I .5 �
Source: City o( Diamond Bar 2019; Dyett & Bhatia, 2019 MILES
Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVYCES 6 - 29
PUBLIC FACILITIES & SERVICES . 1
�, � .� i� , ii �� > ��,� ,-�, �, �� �� �
Diamond Bar is contracted with production , and the burden on
Waste Management , Inc . and landfills to accommodate waste .
Valley Vista Services for solid waste , In recognition of this , recent State
compost and recycling collection , law has become more important .
bulky item pick- up , and leaf and Assembly Bill 1826 , singed in 2014 ,
� limb pick- up as of 2019 . Hazardous requires businesses and multifamily �
waste is typically managed through complexes of five or more units �
Los Angeles County facilities , where are to recycle their organic waste ,
Diamond Bar residents can dispose depending on the amount of waste
of hazardous waste items such as they generate per week . Organic
batteries , herbicides , pesticides , waste includes food waste , green
pool cleaners , batteries , and waste , landscape and pruning
electronics . waste , nonhazardous wood waste ,
and non - food - soiled paper . In
Trash can be diverted away from order to meet or exceed these
landfills through strategies such as state mandates , Diamond Bar
recycling , composting , reuse , and partners with Los Angeles County
waste reduction . Waste reduction and participates in the countywide
and diversion can in turn reduce Integrated Waste Management
greenhouse gas emissions , methane Plan .
� � ��I° V`J; �' ��' '� � `li � I' II 'll' 411, : ��.
Utilities such as electricity, natural and employment growth will
gas , and telecommunications , necessitate additional facilities . It is
including broadband internet important that these new facilities
service , are considered common and services be provided in a
elements of contemporary life . It is manner that minimizes impacts on
necessary to ensure these services the built and natural environments
are available and adequate to and on the health and safety
meet the demands of all Diamond of Diamond Bar residents and
Bar residents and businesses . Rising businesses .
demand associated with population
Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVICES 6 - 31
GOALS & POLICIES . 1
PF - P - 34 Ensure adequate funding and planning for
needed public services and
facilities in coordination with the
Capital Improvement Program .
PF - P - 35 Continue to communicate major
� development plans with utility
companies and coordinate planning
of extension of necessary facilities .
Water and Wastewater
PF - P - 36 Work with the Walnut Valley Water District
( WVWD ) to assess the condition
of water distribution and storage
systems within Diamond Bar and plan
for refurbishments as needed .
PF - P - 37 Collaborate with the WVWD to develop
future plans to expand the use of recycled
water within Diamond Bar as additional
recycled water supplies become available .
PF - P - 38 Work with the Los Angeles County Public
Works Department ( LACPWD ) and Los
Angeles County Sanitation District ( LACSD )
to ensure that wastewater treatment
conveyance systems and treatment facility
capacity is available to serve planned
development within Diamond Bar.
PF - P - 39 Continue to monitor and assess wastewater
and sewer system operations to identify and
subsequently address system deficiencies .
PF - P - 40 Pursue the transfer of ownership of all
'� portions of the storm drain system within
Diamond Bar to the Los Angeles County
Flood Control District ( LACFCD ) .
PF - P - 41 Work with the LACFCD to complete a
drainage master plan for Diamond Bar with
a view to identifying any deficiencies within
the city ' s drainage infrastructure system ,
and update it periodically, as needed .
Diamond Bar General Plan 2040 � PUBLIC FACILITIES & SERVICES 6 - 33
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7. 1 INTRODUCTION
The purpose of the Public Safety also addresses noise and serves to
Chapter is to identify the natural limit the exposure of the community
and man - made public health and to excessive noise levels . The Public
safety hazards that exist within the Safety Chapter addresses and
� city, and to establish preventative satisfies the requirements of both �
and responsive policies and the required Safety and Noise
programs to mitigate their potential Elements of a General Plan .
impacts . The Public Safety Chapter
� � � � 'tl' V � � � � O �' `�' ��' � `� A �' � � � @�/
Government Code Section 65302 ( gJ road widths , and clearances
requires each California city to around structures . The Safety
include within its General Plan a Element is also required to address
Safety Element that addresses the the protection of the community
protection of the community from from unreasonable risks through
any unreasonable risks associated fire protection , law enforcement ,
with the effects of seismic and other emergency preparedness , and the
geologically- induced hazards , City ' s Local Hazard Mitigation Plan .
flooding , and fires . The Safety
Element is required to include Government Code Section 65302 � f )
mapping of known seismic and requires each California city and
geological hazards , and it must county to include within its general
identify flood hazards and urban plan a Noise Element that analyzes
and wildland fire hazards . Where and quantifies noise levels and the
applicable , it must also address extent of noise exposure in their
evacuation routes , peak load water Jurisdictions from the following
supply requirements , minimum sources :
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7 - 2 PUBLIC SAFETY � Diamond Bar General Plan 2040
PUBLIC SAFETY 1
• Highways and freeways ; • Other ground stationary noise
sources identified by local
• Primary arterial and major local agencies as contributing to the
streets ; community noise environment .
• Passenger and freight online The Noise Element is required to
railroad operations and ground map noise level contours such
� rapid transit systems ; that it may be used as a basis �
• Commercial , general aviation , for land use decisions . It must
heliport , helistop , and military include implementation measures
airport operations , aircraft and possible solutions to existing
overflights , jet engine test stands , and foreseeable noise problems .
and all other ground facilities Furthermore , the policies and
and maintenance functions standards of the Noise Element must
related to airport operation ; be sufficient to serve as a guideline
for compliance with sound
• Local industrial plants , including , transmission control requirements .
but not limited to , railroad
classification yards ; and
� C� �: � ii � �>> �� `�� V-�I � P �i �+ �� 11c-� � R ELEM � �?� `'�� �:;
The Public Safety Chapter is which is closely related to noise
correlated with Chapter 2 , Land compatibility as discussed in this
Use and Economic Development , chapter. This element is related
Chapter 4 , Circulation , and to Chapter 4 as the design of the
Chapter 6 , Public Facilities and transportation system is connected
Services . Chapter 2 , Land Use and to the adequate and efficient
Economic Development includes delivery of emergency services .
consideration of hazards in land This element also addresses the
use designations and their density relationship between transportation
standards , and outlines the desired facilities and noise . Lastly, policies
land use pattern in Diamond related to the provision of public
Bar to promote public safety utilities in Chapter 6 , Public Facilities
through ensuring compatible uses . and Services relate to safety issues
Policies in Chapter 2 also address and services in this element .
issues of land use compatibility,
Diamond Bar General Plan 2040 � PUBLIC SAFETY 7 - 3
, � � � � � � . � � �
7. 2 SEISMIC AND GEOLOGIC HAZARDS
GE � � � � � � � � � � �? � �
Geologic hazards include soil erosion rapid runoff and present moderate to
and landslides , subsidence , and high erosion hazards . Slides are more
� expansive soils . Soil properties have likely to occur during the wet season
significant bearing on geologic and in areas of high groundwater
hazards . Local soils in the Planning and saturated soils , or in post - wildfire
Area are largely the result of bedrock areas . As shown in Figure 7- 1 , steep
materials that have weathered , slopes are common throughout the
consisting of a variety ofi sandstones , Planning Area , in areas designated
shales , and siltstones . The natural for development and frequently
canyons in the area contain alluvial , abutting residential land uses .
or stream - carried materials , while Managing erosion and landslide
artificial fill is present in areas that hazards will involve approaches that
have been developed . help residents and decision - makers
understand the particular potential
Erosion and Landslides risks facing individual projects and
Soil erosion is the process by which pursuing mitigation to reduce risks to
soil materials are worn away and an acceptable level .
transported to another area , either
by wind or water . Erosion is a natural Expansive soils
process that occurs over time , but Expansive soils have shrink- swell
over the long - term it can impact the capacity, meaning that they may
stability of landforms and structures swell when wetted and shrink
in sloped or steep areas . Landslides , when dried . Expansive soils can
also referred to as slope failures , be a hazard for built structures ,
include many phenomena that and may cause cracks in building
involve the downslope displacement foundations , distortion of structural
and movement of material , either elements , and warping of doors and
triggered by static ( i . e . , gravity � windows . The higher the clay content
or dynamic ( i . e . , earthquake � of a soil , the higher its shrink- swell
forces . Exposed rock slopes may potential . Expansive soil conditions
undergo rockfalls , rockslides , or are pervasive in the city, and
rock avalanches , while soil slopes well - documented in geotechnical
may experience shallow soil slides , reports . Copper repiping is a
rapid debris flows , and deep - seated common home repair in Diamond
rotational slides . Bar. Although some soil movement is
unavoidable over time , solutions can
Landslide - susceptible areas are be engineered to established factors
characterized by steep slopes , of safety . Subdivisions , primarily in
downslope creep of surface The Country, do have Restricted Use
materials , and unstable soil Areas ( RUAs ) recorded on the maps ,
conditions . On slopes greater than usually back slopes , that were not
30 percent , these soils are subject to evaluated for constructability .
7 - 4 PUBLIC SAFETY � Diamond Bar General Plan 2040
PUBLIC SAFETY 1
SES � � SG IH � � � � � ��
Although the Planning Area contains Ground Failure
no active faults , it is in a seismically Ground failure can occur as a
active region with several major result of seismic activity, taking
active faults located nearby ( Figure the form of liquefaction , lateral
7- 2 ) . The San Andreas Fault Zone , spreading , subsidence , or
a which has the greatest potential �
landslide . Liquefaction is the rapid
to cause damage in the region , is transformation of saturated , loose ,
26 miles northeast of the city . The fine - grained sediment ( such as silt
Planning Area , however, is at greater and sand ) into a fluid state as a
risk from the active local faults of result of severe vibratory motion .
Whittier, San Jose , Sierra Madre , and
San Gabriel . Given the proximity Lateral spreading refers to a type of
landslide that form on gentle slopes
to active fault lines , potential for an has rapid fluid - like movement
seismic hazard in the Planning Area caused by liquefaction . Factors
is high . Seismic hazards include determining the potential for
groundshaking , surface rupture , and liquefaction and lateral spreading
ground failure . Due to the nature are soil type , the level and duration
of seismic hazards , exposure to of seismic ground motions , the type
seismic risks cannot be completely and consistency of soils , and depth
eliminated ; however, they can be to groundwater . Figure 7- 3 shows
reduced through adherence to areas identified by the State as
State building codes and other local having potential for liquefaction due
regulations . to past occurrences or the presence
of certain conditions . Note that there
Groundshaking and Surface may be additional areas not shown
Rupture on the map that may be susceptible
Groundshaking can be caused by to liquefaction , where risks may only
activity along faults in the broader be determined as part of a site -
region . Effects of groundshaking can specific investigation .
vary depending on the magnitude
of the earthquake , distance from the Earthquakes can also trigger
fault , depth , and type of geologic subsidence or landslides ; if the
material . Severe groundshaking earthquake is strong , this can occur
can result in damage to or collapse even in areas of moderate or even
of buildings and other structures . low susceptibility . Figure 7- 3 shows
Surface rupture is the breaking of areas identified by the State of
the ground along a fault during an California as potentially susceptible
earthquake and is primarily a risk to earthquake - induced landslides
for areas overlying active faults . due to previous occurrence or the
As there are no active faults in the presence of certain conditions . Note
Planning Area , risk of surface rupture that there may be additional areas
is low. not shown on the map that may be
susceptible to landslide , where risks
may only be determined as part of a
site - specific investigation .
Diamond Bar General Plan 2040 � PUBLIC SAFETY 7 - 5
Figure 7- 1 Steep Slopes
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- � Sources : Esri , USGS , NOAA
Slopes over 30 Percent Highways Water Features
Ramps � _ J� City of Diamond Bar
Major Roads � A_ _a Sphere of Influence
Local Roads County Boundary
----T- Railroads
Source: Los Angeles County GIS Data Portal, 2016; Natural �
Resources Conservation Service, USDA, 2016; o o.3s o.� i .a
City of Diamond Bar, 2019; Dyett & Bhatia, 2019 MaEs
7 - 6 PUBLIC SAFETY � Diamond Bar General Plan 2040
Figure 7-2 Regional Faults
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- � - � - ,� ry4S/.J1 : . . , �
/ Fault � _ J� City of Diamond Bar
���� Alquist-Priolo �W � � Sphere of Influence
/, Earchquake Fault Zones
County Boundary
0 os i z �
Source: Esr'i, 2019; Cali(ornia Geological Survey (CGS), 2018;
City o( Diamond Bar, 2019; Dyett & Bhatia, 2019 MILES
Diamond Bar General Plan 2040 � PUBLIC SAFETY 7 - 7
Figure 7- 3 Liquefaction and Landslide Hazards
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� Sources : Esri , USGS , NOAA
Seismic Hazard Zones Highways Water Features Liquefaction Zones: Areas where historical occurrence of liquefattion,
or local geological, geocechnical and ground water conditions indicate
SFault Line Ramps � City of Diamond Bar a potential for permanent ground displacemenu such that mitigation
L- - - -' as defined in Public (iesources Code Section 2693 (c) would be
Liquefaction Zones � — — Major Roads � ,m � Sphere of Influence required.
Landslide Zones: Areas where previous occurrence of landslide
Earthqual<e Induced Landslide Zones Local Roads County Boundary movement, or local topographic, geological, geotechnical and subsurface
- RailrOHds water conditions indicate a porential for permanent ground
displacemenrs such that micigacion as def ned in Public Resources Code
Section 2693 (c) would be required.
Source: Seismic Hazard Zones, Ear[hquake Zones af Required Investigation, 199,
Cali(ornia Geological Survey (CGS), Cali(omia Department o( Conservation (DOC); 0 0.35 0.7 1 .4 �
LosAngeles County GIS Data Portal, 2016; Ciry o(Diamond Bar, 2019;
Dyett & Bhatio, 2019 MILES
7 - � PUBLIC SAFETY � Diamond Bar General Plan 2040
GOALS & POLICIES 1
SEISMIC AND GEOLOGIC HAZARDS
See Chapter 2 : Land Use and Economic Development
Element and Chapter 4 : Resource Conservation Element
for additional policies regarding hillside protection and
management.
� �
� �� ,� � , �
PS - G -1 Partner with the Los Angeles County Fire
and Sheriff ' s Departments in community
education efforts aimed at preventing
potential loss of life , physical injury,
property damage , public health hazards ,
and nuisances from seismic gro � nd
shaking and other geologic hazards
such as landslides and mudslides .
1� � 1�-. II �; � I�; �;,
PS - P-1 Require new emergency facilities , including ,
but not limited to , fire stations , paramedic
services , police stations , hospitals ,
ambulance services , and emergency
operations centers be designed to
withstand and remain in operation following
the maximum credible earthquake event .
PS - P- 2 Require areas identified as having
significant liquefaction potential ( including
secondary seismic hazards such as
differential compaction , lateral spreading ,
settlement , rock fall , and landslide ) to
undergo site - specific geotechnical
investigation prior to development and
to mitigate the potential hazard to a
level of insignificance or, if mitigation
is not possible , to preserve these areas
as open space or agriculture .
Figure 7- 3 shows areas where historical
occurrence of liquefaction, or
local geological, geotechnical,
and groundwater conditions
indicate a potential for permanent
ground displacements .
Diamond Bar General Plan 2040 � PUBLIC SAFETY 7 - 9
� � � � � � � � � � �
PS - P- 3 Periodically update the grading standards to
supplement the State and local building
and construction safety codes with
detailed information regarding rules ,
� interpretations , standard specifications ,
procedures requirements , forms , and other
information applicable to control excavation ,
grading , and earthwork construction ,
and provide guidelines for preparation
of geotechnical reports in the city.
PS - P- 4 Carry out a review of critical facilities that may
be vulnerable to major earthquakes
and landslides and develop
programs to upgrade them .
PS - P- S Develop a City- based public awareness /
earthquake preparedness program to educate
the public about seismic hazards and what
to do in the event of an earthquake .
PS - P- 6 Prevent and control soil erosion and
corresponding landslide risks through
hillside protection and management .
7 - 10 GUIDING POLICIES � 2020-2040 Diamond Bar General Plan Update
PUBLIC SAFETY 1
7. 3 FLOOD HAZARDS AND PROTECTION
� .� � II .�� � � f�
The Planning Area is almost entirely city drains primarily into San Jose
encompassed by the San Gabriel Creek , partially via Diamond Bar
� River Basin , which spans 713 square Creek . Most of the southern half of
miles across Los Angeles and the city, as well as the SOI , drains
Orange counties . As shown in Figure into Brea Canyon Creek . Small
7- 4 , the Planning Area drains into areas in the northeast of the city
four subbasins of the San Gabriel are within the Santa Ana River Basin ,
River Basin . The northern half of the draining locally into Chino Creek .
�� !l� ��j f�� � ,� �q f�g ��,
The Federal Emergency zone runs through Tonner Canyon
Management Agency ( FEMA ) flood Creek in the SOI . Measures that
map identifies flooding hazards can minimize flooding hazards
of various intensities . As shown in include the preservation of
Figure 7- 4 , there are two portions of open space ; protecting natural
the Planning Area that are within floodplain functions ; regulating
the 100 -year flood zones , which are development in the floodplains ;
areas having a 1 . 0 percent chance addressing flood - prone properties
of flooding in a given year. The only through acquisition , relocation ,
100 -year flood zone within the city or protection ; and improving
limits lies near the intersection of maintenance of the drainage
Brea Canyon Road and Lycoming system on a citywide basis as well
Street , along the Reed Canyon as related to specific development
Channel . Another 100 -year flood projects .
Diamond Bar General Plan 2040 � PUBLIC SAFETY 7 � 1 1
Figure 7- 4 Flood Zones
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Highways IOOYear Floodplain Water Features
_ ( I % Annual Chance Flood Hazard)
Ramps � _ J� City of Diamond Bar
SOOYear Floodplain
- ' Major Roads (0.2% Annual Chance Flood Hazard) 4 � V� Sphere of Influence
Local Roads County Boundary
-�-�-� Railroads
Source: LosAngeles County GIS Data �
Portal, 2016; FEMA 's National Flood Hazard Layer, FEMA, 2016; o o.3s o.� i .a
City of Diamond Bar 2016; Dyett & Bhatia, 2019 MILES
7 - 12 PUBLIC SAFETY � Diamond Bar General Plan 2040
GOALS & POLICIES 1
FLOOD HAZARDS AND PROTECTION
See Chapter 6 : Public Facilities and Services for additional
policies regarding water and wastewater facilities and
relevant plans .
(c:� (�>> f'\ I�. `�
PS - G -1 Implement measures aimed at preventing the
potential for loss of life , physical injury,
property damage , public health hazards ,
and nuisances from the effects of a 100 -
year storm and associated flooding .
��, �v) �, � rti:, pl�� n,
PS - P -7 Work with the Federal Emergency Management
Agency ( FEMA ) to ensure that the City ' s
floodplain information is up to date
with the latest available hydrologic
and hydraulic engineering data .
PS - P- 8 Continue to implement flood control programs ,
such as the City ' s Grading and
Floodplain Ordinances , that reduce
flood hazards to comply with State flood
risk management requirements .
PS - P- 9 Consider the impacts to health and safety from
potential flooding on future development
in flood - prone areas , including those
identified as being within the 100 - or 500 -year
floodplains . Require installation of protective
structures or other design measures to protect
proposed building and development sites
from the effects of flooding in these areas .
Figure 7- 4 shows flood zones in and around
the Planning Area based on FEMA ' s
2016 flood hazard data .
PS - P-10 Ensure that a drainage study has been
completed by a qualified engineer as a
prerequisite to new development or the
intensification of existing development ,
certifying that the proposed development
will be adequately protected , and that
implementation of the development
Diamond Sar General Plan 2040 � PUBLIC SAFETY 7 - 13
� � � � � � � � � � �
proposal will not create new
downstream flood hazards .
PS - P-11 Use the drainage master plan developed in
coordination with the Los Angeles County
Public Works Department to assess existing
and future flood control needs and related
� improvements within Diamond Bar . �
PS - P-12 As part of the Capital Improvement Program ,
consider and incorporate flood control
improvements identified in the drainage
master plan that specifies funding and timing
of prioritized improvements . Coordinate
the City ' s Capital Improvement Program
with planned County improvements .
PS - P-13 Reduce the flooding impact of a storm event
by enhancing the city ' s green
infrastructure system to complement
the gray infrastructure system .
7 - 14 PUBLIC SAFETY � Diamond Bar General Plan 2040
PUBLIC SAFETY 1
7. 4 FIRE HAZARDS
I�D � I� � �I � fl (� � �
Urban fires are fires that begin in construction materials , availability
� rban centers . They are typically of sprinkler systems , and proximity
� localized , but have the potential to a fire station and hydrants . Urban
to spread to adjoining buildings , fire risk in the city is mitigated in a
especially in areas where homes number of ways , including through
and /or business facilities are the enforcement of updated
clustered close together. Other building and fire codes and the
factors affecting urban fire risk involvement of the Los Angeles
and relative likelihood of loss of County Fire Department in the
life or property include building development review process . Fire
age , height and use , storage of services are discussed further in
flammable material , building Section 7. 6 : Public Safety Services .
n,in � �., I� I�, �y\ I`�9 �}� G fl I� � G; .`.;,
Wildland fires occur in rural or around Diamond Bar is shown in
heavily vegetated areas where Figure 7- S . Fire threat in the city was
abundant surface fuels are generally categorized as Moderate ,
available to sustain a fire . Wildland with areas of higher threat
fires that occur in the wildland - correlated with open space areas
urban interface ( WUI ) — areas where and slopes . Areas with the greatest
undeveloped wildlands intermix fire threat include the southern
with or transition into developed portion of the city surrounding the
land — have the potential to greatly Country Estates subdivision and the
impact nearby structures and cities . open space areas near Sycamore
Due to its setting amidst vegetated Canyon and the Summitridge Trails .
open space areas to the south and The SOI is categorized as Very High
east , and the presence of open and Extreme threat .
space areas interspersed among
urban development , Diamond Bar is CAL FIRE also maintains mapping
at risk from wildland fires . of Fire Hazard Severity Zones ( FHSZs )
to aid in State and local planning
Fire Threat and Fire Hazard for wildland fire protection . In State
Severity Zones Responsibility Areas ( SRAs ) , where
the State of California is financially
In 2005 , the California Department
responsible for the prevention and
of Forestry and Fire Protection ( CAL suppression of wildfires , CAL FIRE
FIRE ) mapped fire threat potential identifies Moderate , High , and Very
throughout California based on the High FHSZs . In Local Responsibility
availability of fuel and the likelihood Areas ( LRAs ) , where fire protection
of an area burning ( based on is provided by city fire departments ,
topography, fire history, and fire protection districts , counties ,
climate ) . Fire threat mapped in and and by CAL FIRE under contract
Diamond Bar General Plan 2040 � PUBLIC SAFETY 7 - 15
/ � � � � � � � � � �
to local government , CAL FIRE CAL FIRE ' s Fire and Resource
identifies only Very High FHSZs . Assessment Program for future
Under State law ( Government reference .
Code Sections 65302 and 65302 . 5 ) ,
the City of Diamond Bar General Wildfire Management Strategies
Plan must address the risk of fire In recent years , the State of
� in Very High FHSZs in the LRA California has experienced
within the City ' s jurisdiction , and increasingly severe wildfire seasons
the Los Angeles County General due to factors such as extreme
Plan must address the risk of fire Weather events such as prolonged
in the surrounding SRA , including drought conditions and high winds ,
Diamond Bar ' s SOI . and the accumulation of fuel . In
As shown in Figure 7- 6 , Very High 2017 and 2018 , devastating fires
FHSZs are mapped in a number such as the Camp and Tubbs
of locations throughout the city, fires in northern California and
including most of the designated the Thomas and Woolsey fires in
open space areas and much of southern California demonstrated
the Country Estates subdivision . the profound impact wildland fires
In accordance with State law, can have on populated areas . As
policies in this General Plan address the State prepares for more such
wildland fire hazards in order to incidents as the WUI continues to
reduce risks both in these zones and expand and changes in climate
in the city as a whole . patterns become more apparent ,
wildfire risk management at the
Wildfire History local level will become increasingly
important . Strategies tend to cluster
Figure 7- 7 shows perimeters for around two main approaches :
historic wildfires in and around maintaining defensible space
Diamond Bar dating to the 1920s around structures , and ensuring that
as mapped by CAL FIRE . As shown , structures are resistant to fire .
areas with higher frequency have
included the SOI and surrounding Defensible space refers to a space
open spaces outside of the created around development
city . While several overlapping that is designed and maintained
perimeters are shown in the to reduce the ability of a fire to
northern portion of Diamond Bar, all spread . Fuel modification is a key
of these date to the 1970s or earlier. element of creating defensible
Since the 1980s , wildfires have space and is intended to disrupt
occurred in locations near Peacefvl what would otherwise be a
Hills Road , Eldertree Drive , Diamond continuous path that could lead
Knoll Lane , and Wagon Train Lane wildfires to buildings , thus increasing
in the southern portion of the city ; the chance that the buildings will
in and around the SOI ; and near survive . Fuel modification strategies
to but outside of the northern city include plant selection based on
limits . This data is maintained and moisture content , resin , and the
made publicly available through production of detritus , and the
7 - 16 PUBLIC SAFETY � Diamond Bar General Plan 2040
PUBLIC SAFETY 1
proper arrangement of plants in buildings so that they have less
relation to structures . The County of chance of catching fire from
Los Angeles Fire Department Fuel burning embers . Strategies include
Modification Unit is responsible for limiting the use of flammable
the approval of fuel modification materials on building exteriors ,
plans for new structures located in protecting vents and chimneys
� the County ' s FHSZs , including in the from embers , protecting windows �
Planning Area . State law requires from breakage under extreme -
there to be at least 100 feet of heat , and screening gutters to
defensible space around buildings . reduce accumulation of flammable
debris . The California Building Code
Designing wildfire - resistant includes standards that address fire
structures means constructing risks to structures in the WUI .
F�' � �� C� � �) /\ fu� ���l �� il ER SUPPLY REQUIREMENT
Diamond Bar engineering standards Department , California Fire Code ,
require a minimum flow of water and Insurance Services Office ( ISO )
for fire protection in accordance standards .
with County of Los Angeles fire
r� � �v, ��� ,� c� �, r� � � �� �� ��� i�!ir� �� r; ,� �
Fire access is regulated by the of a building from serviceable
adopted and amended California fire access roads . The County
Fire Code and County of Los Fire Department establishes a
Angeles Fire Department standards . minimum centerline turning radius
The current Fire Code establishes a to accommodate fire trucks and
minimum distance for all portions building standards .
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Diamond Bar General Plan 2040 � PUBLIC SAFETY 7 - � 7
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FireThreat Level (Cal Fire) Highways � State ResponsibilityArea (SRA)
� ExtremeThreat Ramps Water Features
� Very HighThreat - -- Major Roads � _ J� City of Diamond Bar
� HighThreat Local Roads �s_ _� Sphere of InFluence
� ModerateThreat --�-�- Railroads County Boundary
� Little or NoThreat
0 0.375 0.75 I .5 �
Source: Fire 7hreat, Fire and Resources Assessment Program (FRAP), Cal Fi�e 2005;
Los Angeles County GIS Data Portal, 201 b; Dyett & Bbatia, 2019 MILEs
� - 18 PUBLIC SAFETY � Diamond Bar General Plan 2040
Figure 7- 6 Fire Hazard Severity Zones
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L_ _ _� r
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Local Roads County Boundary
-----r Railroads
Source: California Department of Forestry and Fire Protec[ion �
(CAL FIRE), 2007 & 2009; LosAngeles County GIS Dota Portol, o o.as o.� i .a
2016; Dyett & Bhatia, 2019 MILES
Diamond Bar General Plan 2040 � PUBLIC SAFETY 7 - 19
Figure 7- 7 Wildfire Perimeters 1928 - 2019
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Wildfires � 1960 - 1979 Highways Water Features
Yeor o( Occurance � � 940 - 1959 Ramps � _ J� City of Diamond Bar
� 2000 - 2017 � 1920 - 1939 Major Roads � .��_�_ j Sphere of Influence
� 1980 - 1999 Local Roads County Boundary
---� Railroads
Source: California Department of Forestry and Fire Protection
0 o.zs o.s i �
(CAL FIRE), 2019; City o f Diamond Bar, 2019; Dyett & Bhatia, 2019 Mi�es
7 - 20 PUBLIC SAFETY � Diamond Bar General Plan 2040
GOALS & POLICIES 1
FIRE HAZARDS
� � a � s
PS - G - 3 Partner with the Los Angeles County Fire
Department and affiliated agencies to
implement hazard mitigation plans and
cammunity education efforts aimed at
preventing the potential for loss of life , physical
injury, property damage , public health hazards ,
and nuisances from wildland and urban fires .
f' �Jli , � c� � [� -`�
General
PS - P-14 Educate the public about fire hazards and fire
prevention . Work with the County of Los
Angeles Fire Department and CAL FIRE to
disseminate information on fire weather
watches and fire risks and encourage all
Diamond Bar residents to engage in risk
reduction and fire preparedness activities .
The Los Angeles County Fire Department
maintains information on family fire
preparedness plans and risk reduction
measures such as vegetation management.
PS - P-15 Require adherence to Diamond Bar Fire and
Building Codes , including minimum road widths
and adequate access and clearance for
emergency vehicles and the identification of
all roads , streets , and major public buildings
a in a manner that is clearly visible to fire
protection and other emergency vehicles .
PS - P-16 For privately - owned property within areas
designated for development that are subject
to high wildfire risk , condition approval of
development upon the implementation of
measures to reduce risks associated with that
development , including , but not limited to , fuel
modification plans and Fire Code requirements
in effect at the time of project approval .
PS - P-17 Protect and promote native oak woodlands
that border residential areas as fire buffers .
Diamond Bar General Plan 2040 � PUBLIC SAfETV 7 - 21
� � • � • � • • • � •
PS - P-18 Work cooperatively with the County of Las
Angeles Fire Department , CAL FIRE , and
fire protection agencies of neighboring
jurisdictions to address regional wildfire threats .
Fire Hazard Severity Zones and State Responsibility
� Areas
PS - P-19 Maintain and update the City ' s High Fire
Hazard Severity Zones map consistent with
changes in designation by CAL FIRE to ensure
that the County of Los Angeles Fire Department
is protecting the community from wildland -
urban fires as future development takes place .
PS - P- 20 Prior to permit approval , ensure that all new
development located in a Very High Fire
Hazard Severity Zone or a State Responsibility
Area ( SRA ) is served by adequate
infrastructure , including safe access for
emergency response vehicles , visible street
signs , and water supplies for fire suppression .
PS - P- 21 Collaborate with the County of Los Angeles Fire
Department to ensure that properties in and
adjacent to High or Very High Fire Hazard
Severity Zones as indicated in Figure 7- 6
are adequately protected from wildland
fire hazards in a manner that minimizes
the destruction of natural vegetation
and ecosystems through inspection and
enforcement . Update Figure 7- 6 as new
information becomes available from CAL FIRE .
PS - P- 22 Support the County of Los Angeles Fire
Department ' s Provision of weed abatement
and brush thinning and removal services
in High and Very High Fire Hazard Severity
Areas in order to curb potential fire hazards .
PS - P- 23 Where development is proposed within High or
Very High Fire Hazard Severity Zones , ensure
that the County of Los Angeles Fire Department
has the opportunity to review the proposal in
terms of its vulnerability to fire hazards and
its potential as a source of fire , including fuel
modification plan review for new development
or additions that are equal or greater than
50 percent of the existing square footage .
7 � 22 PUBLIC SAFETY � Diamond Bar General Plan 2040
PUBLIC SAFETY 1
7. 5 HAZARDOUS MATERIALS AND OPERATIONS
Hazardous materials , as defined by most often associated with industrial
the California Code of Regulations or commercial uses ( including
( CCR ) , are substances with certain gas stations , car washes , etc . � ,
physical properties that could may result in the release , leak , or
� pose a substantial present or future disposal of toxic substances on or
hazard to human health or the below the ground surface , where
environment when improperly they can then contaminate soil
handled , disposed , or otherwise and ground water. Disturbance
managed . This refers to a variety of the ground through grading or
of injurious substances , including excavation can result in exposure
pesticides , herbicides , toxic metals of these chemicals to the public .
and chemicals , liquefied natural Improper handling of contaminated
gas , explosives , volatile chemicals , sites may result in further exposure
and radioactive materials . via airborne dust , surface water
Hazardous materials are commonly runoff, or vapors .
found throughout the Planning
Area in households and businesses . The California Department of Toxic
Typical residential and commercial Substances Control ( DTSC ) and State
substances include motor oil , Water Resources Control Board
paint , cleaners and solvents , ( SWRCB ) track and identify sites with
gasoline , refrigerants , and lawn and knawn or potential contamination
gardening chemicals . and sites that may impact
groundwater in accordance with
Sites where hazardous chemical Section 659b2 . 5 of the California
compounds have been released Public Resources Code ( PRC ) . The
into the environment can pose list produced in accordance with
threats to health and ecological this code is also known as the
systems . Historic or current activities , Cortese List .
Diamond Bar General Plan 2040 � PUBLIC SAFETY 7 - 23
� � � � � � � � � � �
• EnviroStor. The DTSC EnviroStor Sites in the Planning Area listed by
hazardous waste facility either SWRCB or DTSC as of May
and cleanup sites database 2019 are shown on Figure 7- 8 . In
identifies sites that have known general , contaminated sites are
contamination or potentially largely found along the city ' s major
contaminated sites requiring local roadways ( e . g . , Diamond Bar
further investigation , and Boulevard , Grand Avenue , Golden
� facilities permitted to treat , store , Springs Drive ) . The majority of listed �
or dispose of hazardous waste . sites listed by the SWRCB are LUST
The EnviroStor database includes cleanup sites , most of which are
lists of the following site types : automobile - related uses such as
federal Superfund sites ; State gas stations . As of 2019, most of
Response , including military those cases had been closed . Also
facilities and State Superfund ; present in the Planning Area are
voluntary cleanup ; and school a number of sites enrolled in the
sites . Regional Water Quality Control
Board ( RWQCB ) Waste Discharge
• GeoTracker. The SWRCB Requirements ( WDR ) program to
GeoTracker database tracks regulate discharges into receiving
sites that impact groundwater
or have the potential to impact �'`'aters . The program typically
regulates discharges of domestic
groundwater . It includes sites or municipal wastewater, food
that require groundwater processing related wastewater,
cleanup such as Leaking and industrial wastewater. As of
Underground Storage Tanks 2019, there were 17 permitted
( LUSTs ) , Department of Defense , underground storage tanks , one
and Site Cleanup Program sites ; open LUST Cleanup Program case ,
as well as permitted facilities one open SWRCB Cleanup Program
that could impact groundwater case , nine WDR program sites , one
such as operating Underground open DTSC Voluntary Cleanup
Storage Tanks ( USTs ) , irrigated program case , and one open DTSC
lands , oil and gas production evaluation within the Planning Area .
sites , and land disposal sites .
7 - 24 PUBLIC SAFETY � Diamond Bar General Plan 2040
Figure 7- 8 Hazardous Materials and Sites
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Highways Hazardous Sites (SWRCB) Hazardous Sites (DTSC) Water Features
Ramps � LUST Cleanup Site ❑ Evaluation � _ J� City of Diamond Bar
Major Roads � Cleanup Program Site � Voluntary Cleanup � P � � Sphere of Influence
Local Roads G Permitted Underground StorageTank (UST) County Boundary
,-�-�- Railroads � Closed Sites
Source: GeoTrocker, State Water Resources Control Board �
(SWRCB), 2019; Envirostor, Department ofToxic Substances ° o.3�s o.is is
Control (DTSC), 2019; City of Diamond Bar, 2019 MILES
Diamond Bar General Plan 2040 � PUBLIC SAFETY 7 - 25
, � � • • . . • � � •
HAZARDOUS MATERIALS AND OPERATIONS
�� � � d �
CR- G - 4 Enforce applicable local , County, State , and
federal regulations pertaining to the
manufacture , use , transportation , storage
� and disposal of hazardous materials and
wastes in the Cifiy with the primary focus on
preventing injury, loss of life , and damage
to property resulting from the potential
detrimental effects ( short- and long - term )
associated with the release of such substances .
1;-' Cv [�, J «=> fl �� s`�
PS - P- 24 Work with the County of Los Angeles Fire
Department to maintain and enforce State
regulations that require proper storage
and disposal of hazardous materials
to reduce the likelihood of leakage ,
explosions , or fire , and to properly contain
potential spills from leaving the site .
PS - P- 25 On sites with known confiamination of soil and
groundwater, work wifih State and local
agencies to continue to identifiy and
compel cleanup of such sites to ensure that
construction workers , future occupants ,
the public , and the environment are
adequately protected from hazards
associated with contamination .
The City may reference the State Water
Resources Control Board 's Geotracker
database and the California Departmenfi
of Toxic Substances Control ' s Envirostor
database to identify potentially hazardovs
sites . Figure 7- 7 shows sites idenfiified
through these databases in 2019.
7 - 26 PUBLIC SAFETY � Diamond Bar General Plan 2040
GOALS & POLICIES 1
PS - P- 26 Prohibit the development of projects that
would reasonably be anticipated to
emit hazardous air emissions or handle
extremely hazardous substances
- within a quarter- mile of a school .
P5 - P- 27 Work with the County of Los Angeles Fire
Department and other State and federal
agencies to ensure adequate emergency
response for hazardous materials incidents .
PS - P- 28 Promote public awareness and
participation in household hazardous
waste management , solid waste ,
and recycling programs .
For additional policies related to
household hazardous waste
management, solid waste , and recycling
programs , see Chapter 8 : Community
Health and Sustainability Element.
Diamond Bar General Plan 2040 � PUBLIC SAFETY 7 - 27
� � � � � � � � � � �
7. 6 PUBLIC SAFETY SERVICES
� �i �_, n �-0 � � � �'� �911 � �
Police services in the Planning Area As of 2019, the LASD ' s contract with
are provided by the Los Angeles Diamond Bar includes the purchase
� County Sheriff ' s Department of a full - time equivalent of 22 . 5 �
( LASD ) . The Walnut/ Diamond Bar deputies , or nearly four deputies
Station , located at 21695 East per 10 , 000 residents . Moreoever,
Valley Boulevard in Walnut ( Figure Additional resources that can
7- 9 ) , services Diamond Bar, Walnut deployed to Diamond Bar from
and the unincorporated area of LASD ' s 22 other stations and four
Rowland Heights . In the case of Bureaus ( Transit Service Bureau ,
emergency, the San Dimas and Parks Bureau , County Services
Industry Stations can provide Bureau and Community Colleges
additional assistance . The LASD Bureau ) . , According to the Sheriff ' s
also provides general - service law Department , the major obstacles to
enforcement to unincorporated meeting response time standards
areas of Los Angeles County, are traffic during peak rush hour,
including areas south of Diamond and traffic in and around the
Bar ' s city limits that are within its schools during the beginning and
SOI . ending of business hours .
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7 - 28 PUBLIC SAFETY � Diamond Bar General Plan 2040
� � � �� � � � � � � � P � B � � C SqFE �- Y
Fire pratection an ,
medicql services qr� mergency
by th � Count prov�a � d
� � partm y o � Los Ang � ��s � ire
stqtio ent, which op � rafes t
ns wlthin Dia hree
limits , qs shown in F � na Bar city
a �' dition to fire g � re 7- 9. In
and emer prote � tion service
the Fire p � encY medicq � servic �s,
perso partment provides
nnel to serve an S
rescue teams, offer S peciqlized
prOJrams , and ins p � � � al trarning
fir� safety, pect businesses for
The County Fire De
natronal g � �definesph rtment fo ��o ,Ns
f� �'� - mrnute re at requir� q
arrivin SpOnse trrne f� r first-
g fire and EMS
minutes for � nits and eight
areaS , ppramedic unrts in urb
as well as an e1ght- an
respons � ti � 1e for first- minute
and EIvIS Units and arriving fire
pararp � dic 12 minutes for
�� 2015 t � e � nits in suburban
for fire and pverag � r�s areas .
� mer pOnse time
the City of pia g � ncy calls in
minutes, S � i mOnd Bar Was 5; 38
respanse
tirnetly above the tqrg � t
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Diarr�ond Bar General Pfan 2040 � P(1BL
ic sAFerr 7- 29
Figure 7- 9 Public Safety Facilities
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o Fire Station Highways Minor Roads
O Police Station Ramps Water Features
�,(` City Hall � Railroads � __J� Ciry of Diamond Bar
Major Roads �_ ___ � Sphere of Influence
0 0.375 0.75 I .5 �
Source: City of Diamond Bar 2019; Dyett & Bhatia, 2019 MILES
7 - 30 PUBLIC SAFETY � Diamond Bar General Plan 2040
GOALS & POLICIES 1
POLICE , FIRE , AND EMERGENCY SERVICES
See Chapter 4 : Circulation Element for additional policies
regarding traffic management.
C� �.� A � �
A
� CR- G - S Maintain safety services fihat are responsive to
' citizens ' needs to ensure a safe and
secure environment for people and
property in the community.
PS - G - 6 Support community- based policing
partnerships to enhance public awareness
of crime prevention and strengthen the
relationship between the Los Angeles
County Sheriff ' s Department and
neighborhoods throughout the city.
PS - G -7 Provide effective emergency preparedness
and response programs .
� � � � � V � �S
PS - P- 29 Coordinate with the Los Angeles County
Sheriff ' s Department for review of applications
for new development and for the intensification
of existing development , ensuring that review
is consistent with Crime Prevention Through
Environmental Design ( CPTED ) principles .
PS - P- 30 Continue to promote the establishment of
neighborhood watch and business watch
programs to encourage community
parfiicipation in fihe patrol of neighborhoods .
PS - P- 31 Continue to utilize the contract model of
government with Los Angeles County Fire
and Sheriff ' s Departments and provide
facilities , staffing , and equipment to attain
the shortest possible response times as
set forth by the adopted standards of
those public safety organizations .
Diamond Bar General Plan 2040 � PUBLIC SAFETY 7 - 31
� • • • . • • • • � •
PS - P- 32 Support the achievement of police and fire
response times through the
implementation of traffic management
measures that mitigate congestion
� during peak rush hour anc! during
r school drop - off and pick- up times .
PS - P- 33 Monitor fire - flow capability throughout the
Planning Area and improve water
availability and redundancy for any
locations that have flows considered
inadequate for fire protection .
Continue to work with various water
purveyors to maintain adequate
water supply and require on - site water
storage for areas where municipal
water service is not available .
PS - P- 34 Coordinate with the County of Los Angeles
Fire Department to review new
development applications for consistency
with applicable Fire Codes .
PS - P- 35 Work cooperatively with the Los Angeles
County Fire Department , CAL FIRE , and
fire protection agencies of neighboring
jurisdictions to ensure that all portions of the
Planning Area are served and accessible
within an effective response time .
PS - P- 3b Work with the Los Angeles County Sheriff ' s
Department and County of Los
Angeles Fire Department to ensure
that the cost of providing new staffing ,
facilities , and equipment , incl � ding
paramedic services , to suppart new
development is assessed against the
developments creating that need .
PS - P- 37 Maintain area - wide mutual aid agreements
and communication links with
adjacent governmental authorities
and other participating jurisdictions .
7 - 32 PUBLIC SAFETY � Diamond Bar General Plan 2040
PUBLIC SAFETY 1
7. 7 EMERGENCY AND DISASTER MANAGEMENT
Due to the prevalence of strives to keep its citizens informed
unpredictable and unavoidable and prepared for any emergency .
hazards in and near the Planning Being prepared can save lives ,
Area , the City must plan to address protect property and minimize
� the safety of residents in times of losses to businesses . �
- disaster . The City of Diamond Bar -
L C� C A L H ,� � ,%� �� �l J�i�, � li II � `r� ��\ `��' ] �<� V�� '� 1�9 �=,� I , ��`�1 f�`; � �� �; i�!I C� � �� �' f�; r� �� '� fl ct� fi'�� �
P � ,� �VNI �� �;
The purpose of emergency The City of Diamond Bar also
preparedness is to protect the works with the National Incident
health , safety and welfare Management System ( NIMS ) , which
of the general public during provides a consistent nationwide
and after natural , man - made framework to enable government ,
( technological ) , or attack- related nongovernmental organizations ,
emergencies . To handle such and the private sector to prevent ,
events effectively requires the mitigate , and recover from
coordination of a number of incidents .
public and private agencies as
well as the public safety agencies The California Emergency Services
such as the Diamond Bar Public Act requires the City to manage
Works Department , the Los and coordinate the overall
Angeles County Fire and Sheriff ' s emergency and recovery activities
departments , and State agencies Within its jurisdictional boundaries .
including the California Emergency Under SEMS , the City is responsible
Management Agency ( CEMA ) at two levels , the field response
and the California Highway Patrol and local government levels . At
( CHP ) . The City of Diamond Bar the field response level , the City
recognizes the importance of and all other agencies use ICS to
emergency preparedness through aid in a standardized emergency
the implementation of the Diamond response . At the local government
Bar Emergency Operations plan level , a designated Emergency
and through collaboration on the Operations Center ( EOC ) is used as
implementation of the County of the central location for gathering
Los Angeles All - Hazard Mitigation and disseminating information
Plan . These plans are based on and coordinating all jurisdictional
the functions and principles of the emergency operations within the
Standard Emergency Management area . During disasters , the City
System ( SEMS ) , which follows the af Diamond Bar is required to
FIRESCOPE Incident Command coordinate emergency operations
System ( ICS ) identifying how the City `^� ith the County of Los Angeles
fits into the overall SEMS structure . Operational Area and , in some
instances , other local governments .
Diamond Bar General Plan 2040 � PUBLIC SAFETY 7 - 33
/ � � � � � � � � � �
Local agencies are a part of a OES ) and by FEMA . The purpose of
broader Emergency Management the HMP is to demonstrate the plan
Systems , overseen by the State for reducing and /or eliminating risk
of California ' s Southern Region in the County . The HMP assesses
Emergency Operations Center. risks associated with flooding ,
earthquake , wildfire , hazardous
The State of California Multi - Hazard material , and drought hazards , and
� Mitigation Plan , also known as the identifies mitigation strategies to �
State Hazard Mitigation Plan ( SHMP ) , reduce the risk .
was approved by FEMA in 2013 . The
SHMP outlines present and planned
activities to address natural hazards .
The adoption of the SHMP qualifies
the State of California for federal
funds in the event of a disaster.
Locally, the County of Los Angeles
adopted an All - Hazard Mitigation
Plan in 2014 . The plan has been
approved by California Governor ' s
Office of Emergency Services ( Cal
i, il � � � � i� � f� I;�� �; � �' �`u�, �� S � iiG`�a �� 111�� I1 �9 �
The City of Diamond Bar conducts • Los Angeles County Sheriff ' s
frequent staff training so that Department Volunteer on Patrol
City employees are equipped to Program . The County of Los
conduct the necessary decision - Angeles Volunteer program offers
making and coordination efforts volunteers an opportunity to be
in the event of an emergency or involved with nearly every aspect
disaster. The City also relies on of a station , including search and
local disaster volunteer programs , rescue , clerical duties , and youth
including the following : volunteer opportunities .
• Community Emergency • FEMA Independent Study
Response Team (CERT ) . The Program . The Emergency
County of Los Angeles provides Management Institute ( EMI )
emergency preparedness of the Federal Emergency
information and disaster training Management Agency ( FEMA )
for use by individuals in their offers self- paced courses
own neighborhoods in times designed for people who have
of an emergency, as well as emergency management
continuing training for Affiliated responsibilities and the general
CERT volunteers to assist the public .
City before , during , and after a
disaster or emergency .
7 - 34 PUBLIC SAFETY � Diamond Bar General Plan 2040
GOALS & POLICIES 1
EMERGENCYAND DISASTER MANAGEMENT
�,� � � �, ��
PS - G - B Use the Local Hazard Mitigation Plan and
Emergency Operations Plan to address
� mitigation and response for local hazards , �
- including seismic hazards , flood hazards , -
fire hazards , hazardous materials incidents ,
and hazardous sites , and to plan for the
protection of critical facilities ( i . e . , schools ,
hospitals ) , disaster and emergency
response preparedness and recovery,
evacuation routes , peak load water
supply requirements , and minimum road
width and clearance around structures .
PS - G - 9 Conduct emergency and disaster
management planning in a collaborative
manner with State and local agencies
and neighboring jurisdictions , while
striving for self- sufficiency in City -
level emergency response .
f`� �� �, � � � �; �>
PS - P- 38 Maintain , review, and update Diamond Bar ' s
Local Hazard Mitigation Plan every five
years , taking into account new hazard
conditions in the Planning Area and new
emergency management techniques .
PS - P- 39 Adopt , implement and update as necessary
the Local Hazard Mitigation Plan to
develop strategies to address changing
risks from flood , drought , fire , landslides ,
seismic activity, hazardous materials ,
and other potential hazards , including
strategies related to monitoring ,
emergency preparedness , development
policies , conservation , vulnerable
populations , and community resilience .
Diamond Bar General Plan 2040 � PU � L9C SAFETY 7 - 35
� � � � � � � � � � �
PS - P- 40 Continue to coordinate the City ' s
emergency preparedness and response
plans and operations with the State
Office of Emergency Management ,
g Los Angeles County, schools , and
other neighboring jurisdictions .
PS - P- 41 Maintain and expand as necessary
community emergency preparedness
resources including personnel , equipment ,
material , specialized medical and other
training , and auxiliary communications .
PS - P- 42 Continue to disseminate public information
and alerts regarding the nature and
extent of possible natural and man -
made hazards , resources identifying
measures residents and businesses can
take to prepare for and minimize damage
resulting from these hazards , citywide
response plans , and evacuation routes .
PS - P- 43 Require all City staff to be adequately
trained to respond to emergency
situations , and conduct regular
emergency preparedness drills with local
organizations including the Los Angeles
County fire and Sheriff ' s departments .
PS - P- 44 Leverage pre - and post- disaster assistance
programs to support resilient planning ,
mitigation , and reconstruction strategies
that consider future climate conditions ,
such as the California Governor ' s
Office of Emergency Services '
Hazard Mitigation Grant Program and
California Disaster Assistance Act .
7 - 36 PUBLIC SAFETY � Diamond Bar General Plan 2040
PUBLIC SAFETY 1
7. 8 NOISE
Noise is generally defined as communication , work , rest ,
unwanted sound and can consist recreation , and sleep . The
of any sound that may produce classification of sound as noise is
physiological or psychological subjective and relies heavily on the
� damage and /or interfere with quality and context of the sound .
I�� � � � f�: �,� �� I� �� :��, 11 u �;�; � (,�k� f� (�9 i�'
The following noise measurement • Variation . Variation is the sound
scales are used to describe noise in level over time . Predominant
a particular location : rating scales for human
communities in the State of
• Frequency. Frequency is the California are Equivalent Noise
composition or spectrum of the Level ( Leq ) and the Community
sound . Frequency is a measure Noise Equivalent Level ( CNEL )
of the pressure fluctuations per or the day - night average level
second of a sound wave . ( Ldn ) based on A - weighted
• Level . The decibel ( dB ) system decibels . CNEL is the time -
of ineasuring sound gives a varying noise over a 24 - hour
rough connection between the period , with a 5 - dBA weighting
physical intensity of sound and factor applied to the hourly Leq
its perceived loudness to the for noises occurring from 7 : 00
human ear . A 10 dB increase p • m . to 10 : 00 p . m . � defined as
in sound level is perceived relaxation hours ) and a 10 dBA
by the human ear as only a weighting facior applied to
doubling of fihe loudness of the noise occurring from 10 : 00 p . m .
sound . Decibef ineasurement to 7 : 00 a . m . ( defined as sleeping
may also be "A -weighted " to hours ) . Ldn is similar to the CNEL
de - emphasize the very low and scale but without the adjustment
very high frequency components for events occurring during the
of the sound in a manner similar evening hours . CNEL and Ldn are
to the frequency response of within 1 dBA of each other and
the human ear in a manner that are normally interchangeable .
correlates well with subjective The noise adjustments are
reactions to noise . Ambient added to the noise events
sounds generally range from 30 occurring during the more
A -weighted decibels ( dBA } ( very sensitive hours .
quiet } to 100 dBA ( very loud ) .
h�l � fl � C`; � (r�v�i r� „/� ri ; II' �
Noise impacts can be described in increases in noise levels noticeable
three categories . The first includes to humans . Audible increases in
audible impacts , which refer to noise levels generally refer to a
Diamond Bar General Plan 2040 � PU � L9C SAFETY 7 - 37
� � � � � � � � � � �
change of 3 dB or greater, since exposure . This level of noise is called
this level has been found to be the threshold of feeling . As the
barely perceptible in exterior sound reaches 140 dBA , the tickling
environments . The second category, sensation is replaced by the feeling
potentially audible , refers to a of pain in the ear. This is called the
change in the noise level between threshold of pain . A sound level of
� 1 and 3 dB . This range of noise levels 160 to 165 dBA will potentially result �
has been found to be noticeable in dizziness or loss of equilibrium . -
only in laboratory environments . The The ambient or background
last category includes changes in noise problem is widespread and
noise level of less than 1 dB , which generally more concentrated in
are inaudible to the human ear. urban areas than in outlying , less -
Only audible changes in existing developed areas . Figure 7- 10 shows
ambient or background noise common sound levels and their
levels are considered potentially noise sources .
significant .
Noise - Sensitive Receptors
Physiological Effects of Noise Noise - sensitive receptors are land
Physical damage to human hearing uses associated with indoor and /
begins at prolonged exposure to or outdoor activities where the
noise levels higher than 85 dBA . presence of unwanted sound
Exposure to high noise levels affects could adversely affect the use of
the entire system , with prolonged the land . Examples may include
noise exposure in excess of 75 residential areas , senior and child
dBA increasing body tensions and care facilities , schools , hospitals ,
thereby affecting blood pressure and religious facilities . Special Status
and functions of the heart and the species and their habitats are also
nervous system . In comparison , considered noise - sensitive . Noise -
extended periods of noise exposure sensitive receptors within the city
above 90 dBA would result in include single - and multi - family
permanent cell damage . When residential housing , schools , parks ,
the noise level reaches 120 dBA , libraries , hospitals , churches and
a tickling sensation occurs in the other religious facilities , wildlife
human ear, even with short - term habitat , and open space .
� �i�'� 1191� c� f� `� cc;;) f�� i`9Cc� ll `� s
Diamond Bar is an urbanized vocalizations from domesticated
area with pockets of open space . animals .
The major sources of noise within
the city include typical urban Traffic
noise generators such as vehicle Vehicular traffic is the predominant
traffic along roadways , industrial noise source within Diamond
and commercial processes , and gar. The level of vehicular traffic
residential noises such as people noise varies with many factors ,
talking , sports events in parks , and including traffic volume , vehicle mix
7 - 38 PUBLIC SAFETY � Diamond Bar General Plan 2040
Figure 7- 10 Typical Noise Levels in the Environment
A-Weighted
Sound Pressure Level
in Decibels
� � ' _
� I �
i Threshold of Pain -
Civil Defense Siren ( 100 ft. )
JetTakeoff ( 200 ft. )
�
Riveting Machine 1�
Rocl< Music Band
w � Piledriver (50 ft.)
Ambulance Siren ( 100 ft. )
' " ii � l
Boiler Room
Printing Press Plant
Freight Cars (50 ft. ) . : , ,"
= Garbage Disposal in the Home
Pneumatic Drill (50 ft.)
,
Inside Sports Car : 50mph
Vacuum Cleaner ( 10 ft.)
; , ;, � : ; Data Processing Center
Department Store Speech ( I ft.)
AutoTraffic near Freeway � ' ,; � Typical Minimum Daytime Levels
Private Business Office - Residential Areas
Large Transformer (200 ft.)
LightTraffic ( 100 ft. ) , i � : �
Average Residence � � Typical Minimum Nighttime Levels
. ; , ; .
- Residential Areas
Soft Whisper
� : � �
Rustling Leaves Recording Studio
Threshold of Hearing Mosquito
(n ft. ) = Distance in feet between
source and listener
Diamond Bar General Plan 2040 � PUBLIC SAFETY 7 - 39
/ � � � � � � � � � �
( including percentage of trucks ) , ( FRA ) to the rule requiring trains
traffic speed , and distance from to sound their horns when
the roadway . Major traffic noise approaching public highway -
sources in Diamond Bar include rail grade crossings , such as the
freeways ( SR - 57 and SR - 60 ) and railroad crossing at South Lemon
arterial roadways such as Brea Avenue . Given that trains sound
� Canyon Road , Diamond Bar their horns upon the approach to a
� Boulevard , Golden Springs Drive , crossing for safety reasons , to alert �
Grand Avenue , and Pathfinder vehicles and people that the train is
Road . Figure 7- 11 shows the contours approaching , grade crossings within
of existing noise levels ( 2019 ) along quiet zones are typically required to
roadways in the Planning Area , include additional safety measures
and Figure 7- 12 shows projected such as upgraded warning devices .
noise level contours at buildout of
General Plan land uses in 2040 . Stationary Noise Sources
Commercial - industrial and light-
Railway industrial land uses in the city have
The noise impacts associated the potential to generate high
with rail activities depend on a noise levels and impact surrounding
number of factors , including the land uses with their equipment
type of train , the length of train , operation . Noise sources from these
the use of a horn , the physical land uses include : air conditioning
track conditions , the geometry and or refrigeration units , power tools ,
intervening structures between lawn equipment , generators ,
the rail line and its receptor, the and other powered mechanical
number of trains operating , and equipment .
the speed of the train . While no rail
lines pass through Diamond Bar, the Other Noise Sources
Union Pacific rail line runs adjacent Other sources of noise can include
to the western portions of the construction and the use of
city, including a Metrolink stop at portable or small - scale pieces
Diamond Bar ' s border with the City of equipment . Construction can
of Industry . Noise impacts from the be a substantial , though short -
railway will need to be considered term , source of noise , and is most
as the Transit- Oriented Mixed - Use disruptive when it takes place
area is developed , particularly with near sensitive uses or during night
regards to sensitive receptors . or early morning hours . Power
One potential railway noise equipment , such as leaf blowers
mitigation measure that the and drills , can produce high noise
City could consider would be to levels at the location of work . Other
coordinate with relevant agencies amplified sounds , such as audio
and private entities to implement equipment at either a sanctioned
a railroad quiet zone . A quiet zone event or residential property, can
is an exemption granted by the also create noise exposure .
Federal Railroad Administration
7 - 40 PUBLIC SAFETY � Diamond Bar General Plan 2040
Figure 7- 11 Existing Noise Contours (2016)
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Existing Noise Levels Highways Water Features
— 75 dB Contour Ramps L _ �� City of Diamond Bar
� 70 dB Contour - - - = Major Roads � �� � Sphere of Influence
65 dB Contour Local Roads County Boundary
60 dB Contour � Railroads
Source: ESA PCR, 201 b; City of Diamond Bar 2019; a 0.35 0.� i .a �
Dyett & Bhatia, 2019 MILES
Diamond Bar General Plan 2040 � PUBLAC SAFETY 7 - 41
Figure 7- 12 Projected Noise Contours (2040)
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Existing Noise Levels Highways Water Features
_ 70 dB Contour Ramps � Ci of Diamond Bar
L ___� �r
65 dB Contour —� Major Roads �v _�� Sphere of Influence
60 d6 Contour Local Roads County Boundary
��� Railroads
Source: ESA, 2016; City of Diamond Bor 2019; o o.as o.� i .a �
Dyett & Bhatia, 2019 MILES
7 - 42 PUBLIC SAFETY � Diamond Bar General Plan 2040
Table 7- 1 Community Noise Compatibility Matrix
Maximum Exterior Community Noise Equivalent Level (CNEL) Maximum
or Day-Night Level (Ldn), dB � Interior
Land Use Categories CNEL
55 60 65 70 75 80
Rural , Single- Family, Multiple- 40
Family Residential
School Classrooms 40
� �
School Playgrounds
Libraries 40
Hospitals , Convalescent 45
Facilities Living Areas
Hospitals , Convalescent 35
Facilities Sleeping Areas
Recreation : Quiet, Passive 40
Areas
Recreation : Noisy, Active
Areas
Commercial and Industrial
Office Areas 45
Normally Acceptable : Specified land use is satisfactory, based upon the assumption that any
i buildings involved are of normal conventional construction , without any special noise
' insulation requirements . Outdoor areas are suitable for normal outdoor activities for this
land use.
Conditionally Acceptable • New construction or development should be undertaken only
after a detailed analysis of the noise reduction requirements is made and needed noise
insulation features included in the design . Conventional construction , but with closed
windows and fresh air supply systems or air-conditioning, will normally suffice.
Normally Unacceptable • New construction or development should generally be discouraged .
�i If new construction or development does proceed , a detailed analysis of the noise reduction
requirements must be made and needed noise insulation features included in the design .
� I Clearly Unacceptable� New construction or development should generally not be
undertal<en.
Nature of the Noise environment where the CNEL or Ldn level is•
• Below 55 dB: relatively quiet suburban or urban areas, no arterial streets within I blocl<, no freeways
within % mile.
• 55 -65 dB: most somewhat noisy urban areas, near but not directly adjacen [ to high volumes of traffic .
• 65 -75 dB: very noisy urban areas near arterials, freeways or airports .
• 75 + dB: extremely noisy urban areas adjacent to freeways or under airport traffic patterns . Hearing
damage with constant exposure outdoors .
Notes :
I . The Community Noise Equivalent Level (CNEL) and Day-Night Noise Level (Ldn) are measures of the
24-hour noise environment. They represent the constant A-weighted noise level that would be measured
if all the sound energy received over the day was averaged . In order to account for the greater sensitivity
of people to noise at night, the CNEL weighting includes a 5 -decibel penalty on noise between 7 :00 pm
and 10 :00 pm and a 10-decibel penalty on noise between I 0 :00 pm and 7:00 am of the next day. The Ldn
includes only the 10-decibel weighting for late-night noise events . For practical purposes , the two
measures are equivalent for typical urban noise environments .
Diamond Bar General Plan 2040 � PUBLIC SAFETY 7 - 43
, � . • . � • • • • •
NOISE
�, � � �, �
PS - G -10 Protect public health and welfare by enforcing
the City ' s noise ordinance , and impose
�� mitigation measures on future development
� and uses to prevent significant degradation
of the future acoustic environment .
PS - G -11 The location and design of transportation
facilities , industrial uses , and other potential
noise generators shall not adverse { y
affect adjacent uses or facilities .
PS - G -12 Support measures to reduce noise emissions by
motor vehicles , aircraft, and trains .
E, � » �, kl � � (� `�,
PS - P- 45 Use the noise and land use compatibility matrix
( Table 7- 1 ) and Projected Noise Contours
map ( Figure 7- 12 ) as criteria to determine the
acceptability of a given proposed land use ,
including the improvement / construction of
streets , railroads , freeways , and highways .
PS - P- 46 Locate new noise sensitive uses — including
schools , hospitals , places of worship , and
homes — away from sources of excessive noise
unless proper mitigation measures are in place .
PS - P- 47 As feasible , locate land uses to buffer
residential uses from potential noise generators
and site buildings to serve as noise b � ffers .
PS - P- 48 Maintain interior and exterior noise - related
development standards through the
Diamond Bar Noise Control Ordinance .
7 - 44 PUBLIC SAFETY � Diamond Bar General Plan 2040
GOALS & POLICIES 1
PS - P- 49 Require that detailed site - specific noise
analysis , including the identification of
noise mitigation measures , be prepared
for all development proposals located
� where project noise exposure would
be other than normally or condifiionally
acceptable as specified in Table 7- l .
Wifih mitigation , development should
meet the allowabie exterior and interior
noise exposure standards established
in the Noise Control Ordinance .
PS - P- 50 Evaluate the land use compatibility of any
proposed development project prior
to approval to avoid locating loud
developments near noise sensitive receptors .
When walls over six feet in height are
necessary to mitigate noise , a berm /wall
combination with heavy landscaping , a
terraced wall heavily landscaped , or other
similar innovative wall design technique
shall be used to minimize visual impacts .
PS - P- 51 Coordinate with the Union Pacific Railroad
and other agencies and private entities to
consider the implementation of a railroad
quiet zone and other methods of reducing
railroad noise impacts on surrounding
noise - sensitive uses along the Union
Pacific Railroad line adjacent to the city .
PS - P- 52 Ensure that noise attenuation facilities are
installed as feasible in all noise - sensitive
areas impacted by County, State , or federal
highways through coordination with Caltrans
and the Federal Highway Administration .
Diamond Bar General Plan 2040 � PUBLEC SAFETY 7 - 45
� � � � � � � � � � �
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7 - 46 PUBLIC SAfETY � Diamond Bar General Plan 2040
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8 . 1 INTRODUCTION
Health and wellbeing are shared the ways in which the physical
goals of all residents of Diamond environment can influence the
Bar, and the City is committed to long - term health and sustainability
promoting the welfare of all its of the community, including the
� residents by improving public health topics of environmental justice , �
through policies and programs active lifestyles , social connection ,
that contribute to a sustainable public health and human services ,
environment , safe and convenient and climate change in order to
multi - modal transportation options , strengthen the community ' s overall
access to healthy food , and a long - term resilience . The Climate
strong community . Additionally, Action Plan ( CAP ) associated
the City is focused on building with the General Plan provides
resiliency to adapt to the impacts an in - depth discussion of climate
of climate change , which pose an change impacts , an inventory
immediate and growing threat to of existing and projected GHG
the health and welfare of Diamond emissions , and additional optional
Bar residents , and promoting the strategies to complement policies
reduction of greenhouse gas ( GHG ) included in this chapter focused on
emissions to reduce potential reducing GHG emissions , resiliency,
impacts . This Chapter addresses and adaptation .
� f� fl, f�11� � �� 1�91 `I'r� � [r �� C� �> � /�� ii C, 'L�, ;�� 1r��
Government Code Section 65302 disadvantaged communities within
requires that general plans include the Planning Area , and provide
either an environmental justice policies to reduce the unique or
element or related goals , policies , compounded health risks facing
and objectives integrated into those communities .
other elements , that identify any
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$ - 2 COMMUNITY HEALTH AND SUSTAINABILITY � Diamond Bar General Plan 2040
COMMUNITY HEALTH AND SUSTAINABILITY : 1
The additional health - related the same force and effect as the
sections of this chapter are not mandatory elements . Accordingly,
required by State law, but address zoning , subdivisions , public works ,
issues that are important to specific plans , and other actions
Diamond Bar. Government Code that must be consistent with the
Section 65303 enables the City general plan must be consistent
� to adopt " any other elements or with any optional elements . Over �
� address any other subjects , which , the past decade , optional elements
in the judgment of the legislative addressing health , wellness and
body, relate to the physical sustainability have become more
development of the . . . city . " Once common .
adopted , an optional element has
G�� f�; Il„ i�1 il fl ��=> i,��l `� f��� f I �� `�i (�� c� `Ii f-� [�`; Gt (� �, I�:; I ��d �`; f�9 il .`.1,
Given that health and sustainability Chapter 4 , Circulation similarly
are influenced by a wide range addresses expanded opportunities
of issues related to the physical for active transportation . Chapter
environment , this chapter is closely 5 , Resource Conservation discusses
linked to policies in each of the public - health related issues such
other chapters . Chapter 2 , Land as air quality and water quality ; air
Use and Economic Development , pollutant emissions are also closely
and Chapter 3 , Community tied to GHG emissions . Chapter
Character and Placemaking 6 , Public Facilities and Services
outline desired land use patterns includes policies related to public
affect health by ensuring that programs and services , including
neighboring uses are compatible the provision of parks and schools .
and encourage walkable Chapter 7, Public Safety discusses
development patterns to support hazards in the Planning Area ,
active lifestyles and greenhouse including those that impact public
gas ( GHG ) emissions reduction . health .
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Diamond Bar General Plan 2040 � COMMUNITY HEALTH AND SUSTAINA � ILITY 8 - 3
� � � � � � � � � � �
8 . 2 PUBLIC HEALTH AND ENVIRONMENTAL JUSTICE
� An � n , � � r� � � � � r� �-� � � — �f�� . .' ��
; � ' � � _�_ • : _ . � �: , b ,�
Public health encompasses a ,
variety of health considerations that ` - - �� � '
,_ _,..: i �
� address the physical , mental , and � �' � `" �``�' .
' 4, �'te _ � �
social well - being of a community . A ,; . � ' ' ` � v' � a '
: � . a: <� ,
well - rounded public health system ' � �s �� ����1 '� � � �,
will consider a wide range of factors � �%�'� � � �` �'
� y � H��- �el.' E d
including environmental health , _ _ �r �" "� �` ,� ->'� "�, '�
active lifestyles , social connections , � F�f ;� '�'�
and access to health and human ��,� � 1� �"��_,;,� `;��
services and healthy food . ` �• � e - " � � `� _ � , ��
;� �� �
-�� �; -�s � ,:
Environmental Health
On a basic level , ensuring adequate rest , recreation , and sleep . Just as
environmental health means maintaining environmental quality
making sure that a community ' s is essential to ecological health in
fundamental environmental health the area , it is essential to promoting
needs , such as clean water and health among community members .
clean air, can be safely met , and
that people are not at risk of Active Lifestyle
exposure to hazardous materials in Active living refers to incorporating
their surroundings . As discussed in physical activity into one ' s daily life .
Chapter 5 , Resource Conservation , Examples of active living include
air quality in the Planning Area walking to transit to commute
is compromised by high levels of to work and walking or biking to
pollutants , the majority of which school or social activities . Daily
are generated by vehicle traffic . physical activity is a crucial aspect
Air contaminants can produce of reducing risk of a host of chronic
lung irritation and exacerbate diseases . Lack of physical activity
existing respiratory conditions , is a risk factor for heart disease ,
and have been tied to increased cancer, stroke , diabetes , and
rates of asthma hospitalization Alzheimer ' s ; and a primary risk
for youth and mortality among factor for obesity . Conversely, active
seniors . Air contaminants can also living is associated with improved
contribute to risk of lung cancer mental health , longer lifespans , and
and cardiovascular disease . better quality of life . In addition to
Vehicle traffic is also the main the benefits of active living on an
source of noise in the Planning individual level , increased levels
Area , as discussed in Chapter 7, of physical activity also have the
Public Safety . High levels of noise potential to reduce public health
can also lead to physiological or and medical costs associated with
psychological damage and / or chronic diseases .
interfere with communication , work ,
8 - 4 COMMUIdITY HEALTH AND SUSTAINABILITY � Diamond Bar General Plan 2040
COMMUNITY HEALTH AND SUSTAINABILITY : 1
Certain environments , such as engages with physical space has
those where the only commute a strong impact on health and
option is to drive or where public welfare at both the individual
facilities and other destinations and community -wide level . Social
are located far from residences , interactions can contribute to
make it difficult for people to both physical and mental health ,
� lead active lives . As is discussed in and strong social networks can �
Chapter 4 , Circulation , vehicular improve the resiliency of residents -
mode share , or the percentage in the face of natural disasters and
of residents who drive to get to emergencies .
work , is high as a result of the City ' s
layout and distribution of land Diamond Bar has a network of
uses . The ability to reduce reliance community facilities designed to
on single - occupant vehicles and host community programs and
promote active living through the events . The City offers a variety
provision of pedestrian and bicycle of recreational , artistic and
facilities and improvements and educational programs , and special
the incorporation of new mixed - events that allow the community
use centers that expand access to to come together. Members of
nearby shops , entertainment and the community have voiced a
services within walking or cycling desire for more facilities and
distance from their homes create programming that will engage more
opportunities for more active Youth and seniors , and reinforce
lifestyles . Policies in Chapter 6 , the community ' s reputation as
Public Facilities and Services also a " small town " where neighbors
support the provision of parks and know and support each other. As
trails where Diamond Bar residents the population becomes more
can go to exercise outdoors . ethnically diverse , spaces and
opportunities for the community
SoCial Connections to come together to celebrate
cultural differences and shared
In addition to the physical values will be increasingly valuable .
environment , the strength of social
networks and how the community In addition , the growing population
of seniors will benefit from activities
� and programs that help them
, - - � � maintain social connections and
`4 networks despite changes in
- _ fe r; their ability or mobility . Chapter
�` � ' - � 6 includes policies that address
� ��� � 4 { ± community facilities , and Chapter
r �_ � � ' �,y "�, � � ,���� ' ' �, %4�:<� ,� _ � 3 includes policies that address
M = � = , ' • ; � _ % - _ ��, `� .; . ':
_ , _-.,::� � ., _ _ _,,� increasing gathering spaces and
`` ` _r
`_ '� -� f encouraging public interaction
' _ _ through good design .
,;i�:
4 _
Diamond Bar General Plan 2040 � COMlV1UNITY HEALTH AND SUSTAINABILITY 8 - 5
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- '.t.
Healthcare and Human Services Diamond Bar ' s Diamond Ride
Access to health care services is program , a subsidized curb - to -
a crucial determinant of overall curb cab service program , helps
community health given that to support access to health and
medical monitoring , advice , and human services for persons with
care is often essential to preventing disabilities and those age 60 and
disease and improving health older residing in Diamond Bar .
outcomes . While Diamond Bar does
not have any public health centers Healthy Food
or hospitals within its jurisdictional An individual ' s access to healthy
boundaries , residents may visit food options is another significant
hospitals in neighboring jurisdictions . determinant of health . The County
Hospitals such as Pomona Valley of Los Angeles Public Health 2015
Hospital Medical Center and St . survey data indicates that an
Jude Hospital / Medical Center in overwhelming majority of parents
Fullerton include Diamond Bar and guardians in the Pomona
in their primary service areas or Health District , which comprises
catchment areas . The Diamond Diamond Bar and neighboring
Bar community also has access to jurisdictions , rated community
two nearby Los Angeles County- run access to fresh fruits and vegetables
public health centers located in as excellent or good . The same
Pomona and Monrovia . These health dataset simultaneously reveals ,
centers provide health services however, that more than 20 percent
for free or on a sliding scale to of children in grades 5 , 7, and 9 and
low- income individuals and those adults are obese . Many studies have
without access to health insurance . found associations between quality
8 - 6 COMMUNITY HEALTH AND SUSTAINABILITY � Diamond Bar General Plan 2040
COMMUNITY HEALTH AND SUSTAINABILITY : 1
of retail food environment and food choices and behaviors , as well
rates of obesity and diabetes . For as promoting alternative healthy
example , when fast food restaurants food options such as farmer ' s
are located adjacent to high markets , community gardens and
schools , it is convenient for students community - supported agriculture
to choose unhealthy food options . services ( CSAs ) , which have
the added benefit of providing
� Encouraging healthy eating can opportunities for social interaction �
include actions such as increasing a and community engagement and
community ' s knowledge of healthy supporting local food producers .
I� �' @� � I;� � �� �!1 � f��9 'ii ��� !i, �i H1J �� l� � �", �
Environmental justice refers to the hazards that can lead to negative
fair treatment and meaningful public health effects , exposure
involvement of all people regardless to hazards , or environmental
of race , color, national origin , degradation , and socio - economic
or income with respect to the vulnerability, determined by
development , implementation and concentrations of people that are
enforcement of environmental of low income , high unemployment ,
laws , regulations and policies . low levels of homeownership , high
While environmental justice has rent burden , sensitive populations ,
traditionally focused on pollution or low levels of educational
burdens and their relationship to attainment .
health , which are discussed in the
context of Diamond Bar below, Identifying DACs is the responsibility
the concept of environmental of local jurisdictians . SB 1000
justice has broadened to include specifies several ways for local
environmental and social jurisdictions to identify DACs ,
vulnerabilities that determine health including the " off- the - shelf " method
such as access to services , healthy of using public maps published
food , and opportunities , thus by the California Environmental
overlapping with other community Protection Agency ( CaIEPA ) ,
health topics addressed in this which is responsible for identifying
Chapter. disadvantaged communities
pursuant to Health and Safety Code
Disadvantaged Communities Section 39711 . Each census tract in
the state is quantitatively evaluated
Environmental justice is typically for environmental pollution and
examined in the context of vulnerability to the pollution .
disadvantaged communities . The CaIEPA identifies the census tracts
term " disadvantaged community " that score in the top 25 percent
( DAC ) is defined by the California in terms of pollution burden and
Health and Safety Code , Section socioeconomic vulnerability as
39711 , and refers to areas " disadvantaged communities . "
disproportionately affected by
environmental pollution and other As of 2019 no disadvantaged
Diamond Bar General Plan 2040 � COMMUNITY FIEALTH AND SUSTAINABILITY 8 - 7
� � � � � � � � � � �
communities have been identified outreach opportunities in other
by CaIEPA in Diamond Bar or its languages is and will continue
Sphere of Influence , however to be particularly important in
this doesn ' t preclude the City of Diamond Bar, where levels of limited
Diamond Bar from incorporating English speaking , also referred
the principles of environmental to as linguistic isolation , are high
justice into its planning and policies , according to CaIEPA and US Census
�
principles that are consistent with Bureau data .
values shared by Diamond Bar
residents such as inclusivity, fairness Pollution Burdens in Diamond Bar
and equity and an understanding The data provided by CaIEPA in
that a community is only as resilient terms of pollution burden indicators
as its most vulnerable populations . is useful in terms of evaluating
Incorporating these principles into environmental health risks in
the City ' s planning and policies will Diamond Bar. Table 8 - 1 shows the
also help to ensure that Diamond percentile rank of select pollution
Bar continues to aspire toward burden indicators used by CaIEPA
being among the most inclusive for census tracts in Diamond Bar.
communities to be found . The City The percentile rank for a given
can tackle procedural inequities , indicator represents the percentage
for instance , or inequities that occur of census tracts in all of California
when the planning process is not With lower values of that indicator.
conducted in a uniform manner, For example , the majority of the
by meeting community members census tracts in the Planning
where they are , at times that allow Area are in the 74th percentile or
for broader participation , and by above for Ozone , which means
translating documents or providing that each census tract has worse
interpretation services to those who Ozone pollution than 74 percent of
are not comfortable providing input census tracts in California . While the
in English . Providing materials and rankings do not necessarily reflect
- .
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Ptanning for Heatthy Communities
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$ - $ COMMUNITY HEALTH AND SUSTAINABILITY � Diamond Bar General Plan 2040
COMMUNITY HEALTH AND SUSTAINABILITY : 1
whether or not any
given indicator is in � .t � - ,
non - compliance with � - — : �
existing standards for � � '
AirQuality: Ozone AirQuality: PM2 .5 Diesel Particulate Matter
safety ( for example ,
a high ranking for
g water contamination . '
- does not necessarily
indicate that the water -
is unsafe to drink by PesticideUse ToxicReleasesfromFacilities TrafficDensity
State standards ) , they Drinking water and hazardous waste
do illustrate clear geographical are two other pollution burden
disparities in environmental quality . indicators where census tracts in
Census tracts within the Planning Diamond Bar tend to score high
Area are burdened with particularly relative to other census tracts in
high levels of fine particulate California . It is important to note
matter ( PM 2 . 5 ) , diesel particulate that both drinking water and
matter ( diesel PM ) , and ozone . hazardous waste are regulated
Fine particulate matter can by standards at the State level .
originate from a variety of sources , These indicators do not , therefore ,
including cars and trucks , industrial necessarily point to major threats to
processes , wood burning , or other human health .
activities involving combustion , Strategies available to the
and wildfires . Because the particles City to address these pollution
are microscopic in size , they can burdens include collaborating
be inhaled and affect both the with neighboring jurisdictions and
lungs and heart , causing heart regional bodies such as the South
attacks , aggravated asthma , Coast Air Quality Management
decreased lung function , and District ( SCAQMD ) ( see Chapter
other complications . Ozone is a 5 for further discussion and
common air pollutant in the region policies related to air quality
that is produced in the atmosphere and water quality ) ; protecting
by chemical reactions between sensitive populations such as
oxygen - containing compounds and young people and aging adults
other air pollutants in the presence from environmental risks through
of sunlight . Emissions from industrial appropriate land use planning and
facilities and electric utilities , motor mitigation requirements such as
vehicle exhaust , gasoline vapors , adherence to SCAQMD ' s air quality
and chemical solvents are some buffers as is referenced in Chapter 5 ;
of the major sources of these and ensuring that hazardous waste
substances . Breathing ozone can does not pose a threat to human
trigger a variety of health problems , health through appropriate land use
particularly for children , the elderly, and hazardous waste regulations , as
and people of all ages who have outlined in Chapter 7 : Public Safety .
lung diseases such as asthma .
Diamond Bar General Plan 2040 � COMMUNITY HEALTH AND SUSTAINA � 9LITY 8 - 9
� � � � � � � � � � �
Table 8 - 1 : Percentile Ranks for Select Pollution Burden Indicators in
Diamond Bar Disadvantaged Communities
• . - � - - � . • . . . . . . .
• • - . - � . .
. -
{ 403303 74 69 95 28 82 77 83 �
403304 69 69 79 28 84 19 57
403305 69 34 0 90 38 8 25
403312 78 82 97 54 96 47 93
403316 82 71 0 94 48 49 38
403319 78 96 0 95 49 26 26
403320 78 21 0 41 40 69 18
403321 82 23 0 95 45 50 15
403322 74 90 0 96 48 42 28
403323 74 98 0 94 50 78 31
403324 74 30 0 43 40 13 22
403325 69 34 0 91 38 41 18
408703 65 69 25 52 82 18 56
N otes :
l . The percentile represents a relative score for the indicators , in comparison to all census tracts in California .
2 . Percentile values are rounded to the nearest one percent .
3 . Based on amount of daily maximum 8 - hour ozone concentration .
4 . Based on annual mean of fine particulate matter concentrations .
5 . Based on County-wide estimates for a July weekday.
6 . Based on drinking water contaminant index for selected contaminants . The drinking water contaminant
index is a combination of contaminant data that takes into account the relative concentrations of different
contaminants and whether multiple contaminants are present . The drinking water contaminant index is
not a measure of compliance with drinking water standards and does not indicate whether water is safe to
drink .
7. Based on traffic volumes on road segments within 150 meters of the census tract boundary.
8 . Based on the sum of weighted permitted hazardous waste facilities and hazardous waste generators
within each census tract .
9. Based on average of percentiles from all pollution burden indicators .
Source : CalEnviroScreen 3 . 0 , 2018
8- 10 COMMUNITY HEALTH AND SUSTAINABILITY � Diamond Bar General Plan 2040
GOALS & POLICIES : 1
ACTIVE LIFESTYLE
See Chapter 4 : Circulation for additional policies
regarding the promotion of multi- modal mobility. See
Chapter 6 : Public Facilities and Services for additional
policies regarding fihe provision of parks and public
facilities .
� �
�:�= �� � LS
CHS - G -1 Support healthy and active lifestyles for all
members of the community by
integrating opportunities for active
transportation and physical activity
into daily life in Diamond Bar.
CHS - G - 2 Achieve more walkable , livable
neighborhoods by expanding the multi -
modal transportation system and creating
a safe , pedestrian - oriented environment .
CHS - G - 3 Promote the use of public parks ,
recreational and other spaces for
healthy exercise and physical activity .
� �4� Id» Il C; li !'�: >
CHS - P-1 Strive to ensure that all areas of the
community have an equal distribution
of public parks and public recreational
facilities to maximize access .
CHS - P- 2 Improve signs directing residents and visitors
to public parks and recreational facilities
from all parts of the community . Integrate
parks and recreation signage with
bikeway and pedestrian - oriented signage
systems throughout Diamond Bar.
CHS - P- 3 Promote physical activity and active
transportation programs through events
sponsored by the City, particularly the
Parks & Recreation Department .
CHS - P- 4 Remove barriers and improve multi - modal
mobility throughout the City for all
community members by supporting transit ,
pedestrian , and bicycle connections
Diamond Bar General Plan 2040 � COMMUNITY HEALTH AND SUSTAINABILITY 8 - 1 1
/ � � � � � � � � � �
between residential neighborhoods
and major destinations , including parks ,
civic facilities , school campuses , other
educational institutions , employment
centers , shopping destinations , parks , and
� recreation areas , where appropriate .
� CHS - P- 5 Implement street design features that €
facilitate walking and biking in both
new and established areas . Require a
minimum standard of these features
for all new developments .
CHS - P- 6 Improve the conditions for youth walking
and bicycling in the areas surrounding
schools by working with the school
district on the Safe Routes to School
program . Assess and prioritize identified
Safe Routes to School infrastructure
improvements in annual transportation
improvements budgets .
SOCIAL CONNECTION
� �� f � � �
CHS - G - 4 Embrace physical , cultural , language , and
social diversity, sensitively integrating
and welcoming newcomers into
the established community.
CHS - G - 5 Enhance cultural and generational diversity
and social connections through
opportunities for volunteerism and civic
engagement , public gathering places ,
public art , family - friendly activities ,
and events that connect residents
to one another, helping them to stay
socially active in the community .
CHS - G - 6 Provide safe and welcoming opportunities
for meeting and gathering that encourage
face - to - face interacti_ons between people .
8 - 12 COMMUNITY HEALTH AND SUSTAINABILITY � Diamond Bar General Plan 2040
GOALS & POLICIES : 1
P � LI � IES
CHS - P-7 Continue to support and promote citywide
events that integrate families , schools ,
and the greater community.
� CHS - P- 8 Foster greater connectivity between
� neighborhoods and uses by reducing
physical barriers and implementing
strategies that improve comfort and
safety, such as improved visibility,
lighting , and walkability .
CHS - P- 9 Encourage and provide volunteer
opportunities for residents to
engage and support a wide variety
of events and activities .
CHS - P-10 Promote social engagement and healthy
lifestyles for older adults by continuing
to organize and offer appropriate
cultural , recreational , and assistance
programs , activities , and services .
CHS - P-11 Evaluate and make changes to the project
review and permitting process to
encourage and facilitate incorporation
of universal lifecycle design principles
( design that promotes the ability to
remain in one ' s house as one ages ) in
new residential development , allowing
community members to stay in their
homes and neighborhoods longer .
CHS - P-12 Encourage public art installations that are
diverse in content , media , and siting
that help to create and reinforce the
uniqueness of Diamond Bar and reflect
an array of cultural influences .
CHS - P-13 Support the provisions of spaces , programs
and facilities across the community to
provide opportunities for artistic and
cultural engagement and expression for all
members of the Diamond Bar community.
Diamond Bar General Plan 2040 � COMMUNITY HEALTH AND SUSTAINABILITY 8 - 13
� � � � � � � � � � �
CHS - P-14 Develop and incorporate " destinations " —
such as the clusters of commercial
uses that draw residents from the entire
community into the Neighborhood
Mixed Use , the Transit - Oriented Mixed
Use , and the Town Center focus areas .
� CHS - P-15 Establish opportunities for gathering areas in �
new neighborhoods .
CHS - P-16 Create safe public spaces through
implementation of Crime Prevention Through
Environmental Design ( CPTED ) strategies .
HEALTHCARE AND HUMAN SERVICES
See Chapter 2 : Land Use and Economic Development
for additional policies regarding the development of
employment opportunities .
`�� � /\ �� Ati
CHS - G - 7 Promote health equity, including equal
access to health facilities , clinics ,
goods , services , and economic and
educational opportunities , helping
to ensure wellbeing for residents of
all ages , abilities , and incomes .
�� c�:� L, � ,�� � f�� 5
CHS - P-17 Support the managed growth of
complementary health services and
medical facilities in Diamond Bar,
including clinics , hospitals , medical
offices , and medical laboratories . Work
with hospitals , medical practices , and
other health care providers to ensure
widespread access to these services .
CHS - P-18 Publicize existing health programs and assist
residents in connecting with County
and community - based health
services and medical facilities .
8 - 14 COMMUNITY HEALTH AND SUSTAINABILITY � Diamond Bar General Plan 2040
GOALS & POLICIES : 1
CHS - P-19 Encourage the use of schools as community
and neighborhood centers to provide a
range of services and programs , such as
evening courses related to healthy living ,
job - training and retraining programs , and
other services for the community at large .
� HEALTHY FOOD �
� � �► L �
CHS - G - 8 Promote a healthy, balanced , functional ,
and equitable food system for the entire
Diamond Bar community by reducing
barriers and increasing access to
locally- grown fruits and vegetables and
increasing community-wide knowledge
of healthy food choices and behaviors .
I� �?> L, II c_ II f� �;,�
CHS - P- 20 Continue to support and collaborate with
local non - profit organization ( such as
the Greater La Puente Valley Meals on
Wheels ) to promote and provide food
delivery to Diamond Bar residents who
have difficulty preparing food or obtaining
meals for themselves due to physical ,
mental , financial , or other conditions .
CHS - P- 21 Promote healthy food and beverages at
City - sponsored events , programs , and
recreation activities . Ensure that safe ,
clean drinking water is available for
the public at all City- owned buildings
where public programs occur.
CHS - P- 22 Seek ways to partner with regional
Community Supported Agriculture
( CSA ) as an alternative source of fresh
and healthy fruits and vegetables for
Diamond Bar residents , particularly those
with limited mobility or income , or those
farthest from existing grocery stores .
Diamond Bar General Plan 2040 � COMMUNITY HEALTH AND SUSTAINABILITY 8 - 15
/ � � � � � � � � � �
CHS - P- 23 Support home gardening efforts by
adopting a Home Gardening and Urban
Agriculture Ordinance or otherwise
ensuring that zoning does not prevent or
restrict the use of residential properties as
vegetable gardens , and provide residents
� with technical assistance opportunities in �
� the form of online and library resources �
and workshops on gardening basics and
cooking healthy meals with fresh produce .
CHS - P- 24 Explore opportunities to incorporate
community gardens into City parks and
open space areas , and encourage the
Diamond Bar Community Garden and other
organizations to facilitate the development ,
administration , and operation of additional
community gardens in the City .
PUBLIC HEALTH AND ENVIRONMENTAL
JUSTICE
� � � i�, �
CHS - G - 9 Promote health equity and environmental
justice in Diamond Bar to ensure
the well - being of residents with the
greatest vulnerability to health risks .
CHS - P-10 Involve environmental groups , the business
community, and the general public in
the formulation and implementation
of programs that enhance public
health in the City and the region .
h� � n� � � B � �
CHS - P- 25 Collaborate with the Los Angeles County
Department of Public Health and other
agencies to monitor and maintain data
related to Diamond Bar health outcomes
and risk factors , and use this data to
consider development or expansion of
County and City programs to best serve
and protect the Diamond Bar community.
8 - 16 COMMUNITY HEALTH AND SUSTAINA � ILBTY � Diamond Bar General Plan 2040
GOALS & POLICIES : 1
CHS - P- 26 Monitor and maintain data from CaIEPA
related to pollution burdens and
socioeconomic vulnerabilities in Diamond
Bar, and use the data to consider
development or expansion of programs
and investments to reduce the risks
� of disadvantaged communities . �
CHS - P- 27 Recognizing the adverse health impacts
associated with compromised air quality,
protect sensitive receptors from exposure to
hazardous concentrations of air pollutants .
CHS - P- 28 Manage , enhance , and improve the City ' s
tree canopy as a valuable ecological
and public health resource , particularly
adjacent to and within sensitive use areas
located in the Air Quality Management
District ( AQMD ) 500 - foot air quality buffer.
CHS - P- 29 Require noise mitigation measures , which
could include buffers , noise barriers , or
natural open space , and vegetation ,
between new sensitive uses such as
residential units and schools , and
major noise polluters such as SR - 57
and SR - 60 , the Metrolink Riverside
rail line , and heavy industry .
CHS - P- 30 Support a better informed and civically
engaged community by making information
available both in print and electronic
format , and , to the extent possible ,
provide this information in the languages
predominantly spoken in the community .
CHS - P- 31 Encourage all segments of the Diamond Bar
community, including residents ,
businesses , and organizations , to be
involved in the development , adoption ,
and implementation of community
health programs and activities .
Diamond Bar General Plan 2040 � COMMURIITY HEALTH AND SUSTAINABILITY 8 - 17
� � � � � � � � � � �
8 . 3 CLIMATE CHANGE AND GREENHOUSE GASES
Climate change impacts pose reduced water supply . It is thus
an immediate and growing important that the Diamond Bar
threat to California ' s economy, community build resilience to be
� environment and public health . able to adapt to these effects ,
� The effects of climate change in and also promote the reduction of
the San Gabriel Valley include greenhouse gas ( GHG ) emissions to
increased temperatures , reduced mitigate , or reduce their impacts .
precipitation , flooding , and
� fL9S°� �, v� � �`� �1 ;, h�� «� ;�; li�i�lll �ffl � � � � � .�9
In California , about 40 percent of and the dominance of single
greenhouse gas emissions come occupant vehicles in Diamond
from the transportation sector . For Bar, the most promising mitigation
example , the proximity between measures available to the City of
housing and job centers and the Diamond Bar are those related
design of transportation networks to the reduction of vehicle miles
determines the distance needed traveled ( VMT ) through land use
to travel between destinations and transportation planning that
and the transportation mode promotes compact growth and
choices available . These factors alternative modes of transportation .
directly influence the amount of This General Plan provides a land
greenhouse gas emissions from the use plan and corresponding land
transportation sector. Reducing use and circulation policies that act
vehicle miles traveled will help as a framework for VMT reduction
Diamond Bar reduce its greenhouse through compact , mixed - use
gas emissions and mitigate potential development that provides greater
impacts of climate change , with access to shopping , employment
the added benefit of reducing and recreational destinations
pollutants that affect public health that do not require travelling long
issues related to air quality in the distances by car ( see Chapter
city and broader region . 2 : Land Use and Economic
Development and Chapter 4 :
Climate change mitigation refers Circulation ) . Other climate change
to the actions taken to limit the mitigation strategies include energy
magnitude or rate of climate efficiency and conservation , waste
change and its corresponding reduction and diversion , and green
effects , and focuses primarily on building and landscapes . Additional
the reduction of GHG emissions . measures to promote climate
Given the relationship between change mitigation are outlined in
transportation and greenhouse the City ' s Climate Action Plan .
gas emissions in California
8- 18 COMMUNlTY HEALTH AND SUSTAINABILITY � Diamond Bar General Plan 2040
COMMUNITY HEALTH AND SUSTAINABILITY : 1
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Diamond Bar General Plan 2040 � COMMUNITY HEALTH AND SUSTAINABILITY 8 - 19
� � � � � � � � � � �
Energy Efficiency and Green Building and Landscapes
Conservation The California Green Building
Many energy efficiency and Standards Code ( CALGreen ) was
conservation measures rely on adopted in 2010 . It was the first
individual decisions and incentives code of its kind to mandate green
� to make these decisions . The City building design and construction
€ is positioned to act as a model of in categories related to planning �
energy efficiency and conservation and design , energy efficiency,
through the establishment of city water efficiency and conservation ,
practices that reduce energy material conservation and resource
consumption , and to disseminate efficiency, and air quality standards .
information on incentives such as The City ' s Building Code was
energy upgrading financing options amended for consistency with
that will encourage the Diamond CALGreen Building Code . CALGreen
Bar community to conserve energy . measures thus apply to all new
buildings ( residential and non -
Waste Reduction and Recycling residential ) . In addition , Diamond
Diverting waste from landfills Bar ' s biological resources and
by promoting reduction , reuse , ecosystems contribute to climate
recycling , and composting of change mitigation through carbon
materials can substantially reduce storage and climate regulation .
greenhouse gas emissions . Recycling These ecosystem services will be
and waste prevention programs particularly important as climate
reduce energy and transportation change contributes to higher
needed to manufacture and ship temperatures and heat islands in
resource - intensive products and urban areas .
packing . Composting food and
yard waste reduces the amount of
methane produced in landfills .
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8 - 20 COMIVIUNITY HEALTH AND SUSTAINABILITY � Diamond Bar General Plan 2040
COMMUNITY HEALTH AND SUSTAINABILITY : 1
��' � � � � T � � � � 6�� GE RES � 9� � � NCE __ . _ . ,
Although reducing GHGs is �
necessary to avoid the most �
catastrophic consequences of �
climate change , a certain amount �
� of climate change within the �
� planning horizon of this General �
� Plan is unavoidable due to existing �
emissions and the concentration
of GHGs in the atmosphere . The
Fourth California Climate Change " " " "" ` " ' - � � ' " '
Assessment , completed in 2018 ,
projected that for the Los Angeles problems related to heat and
region , including Los Angeles wildfire smoke . Geographically,
County, changes in climate are some locations in the Planning
likely to include : Area may be more susceptible to
certain effects of climate change .
• Continued warming , with Structures and residents located on
average maximum temperatures hillsides and near open spaces will
to increase 4 to 5 degrees have greater wildfire risk . Intensively
Fahrenheit ( F ) by 2050 ; developed areas are more likely to
• Increases in extreme experience " heat island " effects ,
temperatures , with the hottest in which urban development and
day of the year being up human activities contribute to
to 10 degrees F warmer for higher temperatures than those in
many locations by the end of surrounding unurbanized areas .
the century and the number Heat islands are typically the result
of extremely hot days also of dark surfaces , building materials
increasing ; that absorb and radiate heat , loss
of vegetation , and energy usage .
• Increases in both dry and wet In order to reduce the community ' s
extremes , with increases in vulnerability and build resiliency,
precipitation on the wettest the City can prepare for and adapt
day of the year and increased to the impacts of climate change .
frequency and severity of Strategies can include the following :
atmospheric river events ; and
• Plan for extreme weather
• Increased frequency of wildfire . events by incorporating the
potential effects and threats of
In the Planning Area , some residents climate change into emergency
will be more vulnerable to the management planning ;
effects of climate change . For
example , young residents , seniors , • Use urban design as a tool to
persons with disabilities , lower- reduce heat island effects by
income households , those living in planting trees and limiting the
social isolation , and the homeless use of pavement , other urban
are at a much higher risk for health
Diamond Bar General Plan 2040 � COMMUNITY HEALTH AND SUSTAINABIL9TY 8 - 21
• - • • • • • - : • � - • • - • - -
� • - • - - - • • • - • •
• - • - • - • • -
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- - • • •
• � • • • • • • • - -
• � • • - • •
- • • • • • � • • •
- • • - • -
THE URBAN HEAT ISLAND EFFECT
Urban Heat Islands refer to developed areas that undergo higher warming
of the surface and the atmosphere than surrounding rural or undeveloped
areas . Research suggests that unmitigated Climate change will lead to
highertemperatures and longer, more severe , and more frequent heaf
waves . Urban areas such as Diamond Bar already suffering from the heat
island effect will bear the brunt of these harsher heat events , increasing
the risk of illnesses such as heat exhaustion and heat stroke , particularly
among older adults , young children , and those who work outdoors .
Mitigation measures can include increasing the tree canopy , installing
green roofs and cool pavements , and reducing the number of vehicles in
an area .
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• � � � • • : • — � • ' • • � �
GOALS & POLICIES : 1
CLIMATE CHANGE AND GREENHOUSE
GAS ES
See Chapter 4 : Circulation for additional policies regarding
the reduction of VMT and promotion of multi- modal
mobility. See Chapter 5: Resource Conservation for
additional policies regarding hillside conservation and
� open space preservation
��� �) ��\ [� �
CHS - G -11 Undertake initiatives to enhance sustainability
by reducing the community ' s greenhouse
gas ( GHG ) emissions , protecting natural open
spaces which provide CO2 sequestration ,
and fostering green development patterns ,
buildings , sites , and landscapes .
CHS - G -12 Conserve natural open spaces by prioritizing
and supporting infill development
to build healthy, equitable , and
sustainable communities .
CHS - G -13 Promote energy efficiency and conservation in
the community.
CHS - G -14 Encourage waste reduction and diversion
practices to meet State targets
and reduce GHG emissions .
CHS - G -15 Increase the community ' s resiliency and
capacity to resist and recover from social ,
economic , and environmental disruption
from climate change impacts .
� � � V � � � �
Greenhouse Gas Emissions
CHS - P- 32 Continue to monitor the City ' s compliance with
State - mandate GHG emissions , as provided
for in the CAP. Make timely adjustments
to City policies as required to continue
meeting State GHG targets , and as
changes in technology, federal and State
programs , or other circumstances warrant .
CHS - P- 33 Plan land uses to reduce vehicle miles traveled
( VMT ) , prioritizing infill development and
Diamond Bar General Plan 2040 � COMMUNITY HEALTH AND SUSTAINA � @LITY 8 - 23
� � � � � � � � � � �
incorporating vertical and horizontal mixed -
use development , public transit , and active
transportation facilities where appropriate ,
recognizing that the transportation sector
� is the largest source of GHG emissions in �
Diamond Bar and in California more broadly .
CHS - P- 34 Demonstrate City leadership in GHG emission
reduction activities by giving preference
to proposals that reduce or minimize
GHG production , or provide incentives for
selecting climate friendly, or lower and /
or non - emission producing alternatives .
Energy Efficiency and Conservation
CHS - P- 35 Use the City ' s CAP as the platform for outlining
and implementing measures to improve
energy conservation and increase renewable
energy use in existing and new development .
CHS - P- 36 Collaborate with local , regional , State , and
federal agencies on the monitoring and
evaluation of energy resources as well as
the identification of energy- efficient and
alternative energy technologies and practices .
CHS - P- 37 Work with appropriate federal , State , and
private utility agencies to identify and facilitate
utility rate revisions that would provide
incentives for the conservation of energy ,
CHS - P- 38 Accelerate the adoption of rooftop and
parking lot solar power and /or other
alternative energy usage on developed sites
in Diamond Bar through actions such as :
a . Establishing incremental growth goals for
solar power/alternative energy
systems in Diamond Bar ;
b . Developing guidelines , recommendations ,
and examples for cost - effective
solar and /or other alternative
energy - based installation ; and
c . Installing solar/alternative energy
technology on available City spaces .
8 - 24 COMMURIITY HEALTH AND SUSTAINABILITY � Diamond Bar General Plan 2040
GOALS & POLICIES : 1
CHS - P- 39 Work with Southern California Edison Company
( SCE ) and Southern California Gas
Company ( SoCalGas ) to increase public
awareness of energy conservation
� technology and best practices . �
CHS - P- 40 Require the inclusion , where feasible , of
provisions for energy - efficient modes of
transportation and fixed facilities that establish
public transit , bicycle , and pedestrian modes
as safe , efficient , and desirable alternatives .
CHS - P- 41 Support the use of clean fuel and " climate
friendly " vehicles in order to reduce
energy use , energy cost , and greenhouse
gas emissions by residents , businesses ,
and City government activities .
CHS - P- 42 Seek funding and other assistance from the
South Coast Air Quality Management
District for installation of electric vehicle
charging stations at appropriate
locations throughout the City .
CHS - P- 43 Explore participating in new high efficiency
technology programs such as LED lighting
for City facilities , safety lighting in parks and
other public spaces , and LED street lighting
conversion for all City- owned street lights .
CHS - P- 44 Promote energy conservation and retrofitting of
existing buildings through the implementation
of the Green Building Codes .
CHS - P- 45 Collaborate with the Walnut Valley Water
District , the Los Angeles County Public
Works Department , and the Los Angeles
County Sanitation District in community
education efforts to reduce the consumption
of carbon - based fuels for conveyance and
treatment of water and wastewater .
Diamond Bar General Plan 2040 � COMMUNITY HEALTH AND SUSTAINABILITY 8 - 25
/ � � � � � � � � � �
Waste Reduction and Recycling
CHS - P- 46 In order to achieve compliance with the source
reduction goals set forth under Assembly Bill
( AB ) 939 amendments thereto , incorporate
solid waste diversion goal performance
standards into the contracts with the City ' s
franchise waste haulers , and enforce the City ' s �
Construction and Demolition Waste Ordinance .
CHS - P- 47 Reduce the disposal of household hazardous
wastes in landfills through continued
cooperation with waste pick- up service
providers , the County Sanitation Districts , and
the Los Angeles County Department of Public
Works in the provision of curbside pick- up and
annual household waste round up events .
CHS - P- 48 Continue to promote the safe disposal of
household hazardous waste through
public education and incentives .
CHS - P- 49 Continue to educate residential , commercial ,
and industrial generators about source
reduction and recycling programs
and encourage their participation in
these programs through promotional
campaigns and incentives .
CHS - P- 50 Encourage generators of edible food to have
contracts or agreements with food rescue
organizations to minimize edible food
from being disposed of or destroyed .
CHS - P- 51 Encourage residents and businesses to compost
leaves , grass clippings , food waste , and
other organic materials by promoting existing
food waste pickup services , residential
waste hauler rate composting discounts ,
and residential backyard composting .
CHS - P- 52 Collaborate with the City ' s contract waste
haulers to educate and encourage
residents and businesses about
waste reduction strategies .
CHS - P- 53 Require commercial and industrial generators
to develop and implement a source
reduction and recycling plan tailored
to their individual waste streams .
8 - 26 COMMUNITY HEALTH AND SUSTAINABILITY � Diamond Bar General Plan 2040
GOALS & POLICIES : 1
Climate Change Resiliency
CHS - P- 54 Incorporate updated information about future
climate change hazards , particularly
those related to extreme weather such
as drought , storms , heat waves , and
wildfires , into the City ' s hazard mitigation
� and emergency planning processes . €
CHS - P- 55 Protect and enhance areas identified as
healthy functioning ecosystems that
provide the ecological , cultural , public
health and safety, and economic value
of ecosystem services , or benefits .
CHS - P- 56 Prepare a Landscape Manual or otherwise
incorporate landscape standards in the
Municipal Code to mitigate urban heat
island effects and contribute to long - term
carbon storage through maximum tree
canopy coverage and minimum asphalt
and paving coverage particularly for
denser areas like the planned Town Center
and mixed - use neighborhoods , existing
, shopping centers , and industrial and other
areas with expansive surface parking .
Consider the reflectance of stone and
rock ground cover in heat generation .
CHS - P- 57 Encourage water conservation , drought-
tolerant landscaping and the use of greywater
and reclaimed and recycled water, where
appropriate , with a view to reducing water use .
CHS - P- 58 Encourage the installation of green roofs and
cool ( reflective ) roofs to reduce temperatures
of roof surfaces and the surrounding air.
CHS - P- 59 Increase the efficiency of water usage in public
places , such as irrigation in public parks ,
and utilize drought - tolerant landscaping
in City parks and streetscapes .
CHS - P- 60 Promote a resilient transportation system that
offers connectivity for multiple transportation
modes in the face of extreme events related to
climate change , such as storms and wildfires .
Diamond Bar General Plan 2040 � COMMUNITY HEALTH AND SUSTAINAB � LITI` 8 - 27
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8 -28 COMMUNITY HEALTH AND SUSTAINABILITY � Diamond Bar General Plan 2040