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City of Diamond Bar March 17, 2026 Statement of Qualifications Professional On-Call and Traffic and Transportation Engineering Services Cover Letter GHD Proposal Number 12692793 City of Diamond Bar Christian Malpica, Associate Engineer/Project Manager 21810 Copley Drive Diamond Bar, CA 91765 March 17, 2026 Re: On-Call Professional Services, Traffic and Transportation Engineering Dear Mr. Malpica, The City of Diamond Bar’s (City) dedication to enhancing traffic safety, mobility, and infrastructure resilience aligns closely with GHD’s mission to deliver impactful, community-focused engineering solutions. With over 96 years of experience across California, our team is equipped to support the City’s evolving transportation needs with tailored, forward-thinking strategies. We assisting with design, studies, ITS, project delivery, signal operations and traffic management support. GHD has consistently delivered high-quality municipal infrastructure improvements with a strong emphasis on efficiency, safety, and public value. Our portfolio includes successful projects across Southern California, including neighboring regions such as San Bernardino, where we’ve implemented roadway, drainage, and utility infrastructure enhancements. Our deep understanding of local agency needs is reflected in our long-standing relationships—90% of our clients are public agencies, and 75% of our work comes from repeat clients. We are well- versed in the dynamic nature of on-call contracts and are prepared to respond swiftly to task orders with the expertise and agility required to meet tight deadlines. Leading our team is Contract Manager Steven Latino, who brings extensive experience from across Southern California and neighboring communities. His knowledge of local regulations, permitting processes, and agency coordination ensures seamless project execution. Under Steven’s leadership, our team is committed to proactive communication, efficient delivery, and responsible stewardship of public resources. Whether managing utility relocations, designing critical roadway improvements, or conducting inspections, GHD is ready to support the City's goals with transparency, cost control, and sustainability at the forefront. Thank you for considering our team for this important contract. We look forward to the opportunity to contribute to Diamond Bar’s continued growth. Please feel free to contact me at 951.252.4916 or Steven.Latino@ghd.com with any questions. Regards, Todd Tregenza Principal-in-Charge +1 916 245-4216 todd.tregenza@ghd.com Required Statement: GHD has reviewed and agrees to all terms and coniditions outlined in the Request for Qualifications.GHD's staff is ready and available to provide the requested services outlined by the City's RFQ. We acknowledge receipt of Addendum No. 1 dated March 13, 2026. Please find the signed acknowledgement after this letter. Steven Latino Contract Manager +1 657 622-4920 steven.latino@ghd.com 320 Goddard Way, Suite 200 Irvine, CA 92618 949.648.5200 www.ghd.com 1 ADDENDUM NO. 1 DEPARTMENT OF PUBLIC WORKS ADDENDUM NO. 1 Professional On-Call Traffic and Transportation Engineering Services The following questions and responses to the Request for Proposals (RFP) shall be incorporated into the solicitation documents for the above-referenced Design Consultant Services project. This addendum forms part of the Contract Documents and the Consultant shall sign this page as acknowledgement of receipt of Addendum No. 1 and attach it to the RFP. David G. Liu, P.E. Date Director of Public Works/City Engineer Consultant's Authorized Signature RMRA Measure M R Local Return Gas Taxeet Rehab.- Area 1a, 1b, 2 (Design)n)ntain Laurel) anyon to Lemon) to BCY)82,779$ 82,779$ om Pathfinder to Mountain Laurel Way) (Const.)1,200,000$ 1,200,000$ eet Rehab - Area 1 (Const.)2,000,000$ 925,000$ 850,000$ 89,0$ en Springs from Brea Canyon to Lemon Ave.) (Const.)900,000$ 500,000$ mp Project (Const.)177,855$ nt Projects 4,360,634$ 1,700,000$ 1,007,779$ 850,000$ 89,0$ 250-5510-46412)Project Description Total FY Budget(109) Measure M (111)Gas Tax (112) Prop A (113) Prop C Sign and HSL Replacement (Design)50,000$ 50,000$ Sign and HSL Replacement (Construction)350,000$ 350,000$ al 11 Locations (Design and Construction)380,000$ 90,000$ 100,000$ 190,0$ 780,000$ 350,000$ 140,000$ 100,000$ 190,0$ ments (250-5510-46413) Project Description Total FY Budget (113) Prop C Foothill Transit Grant60,000$ 60,000$ SD/Calbourne 40,000$ 40,000$ nfrastructure Improvements 100,000$ 60,000$ 40,000$ 0-5510-46420) Project Description Total FY Budget(107) Measure W (108)RMRA (109) Measure M (113) Prop Covements-Phase 3 (Flapjack-Design)65,000$ 65,000$ Cover Letter | 2 GHD | City of Diamond Bar | Professional On-Call - SOQ - Traffic and Transportation Engineering Services Contents 1. Cover Letter 1 2. Qualifications and Experience 3 About GHD ..................................................................................3 3. Project Approach and Understanding 8 Project Understanding – Traffic Engineering ........................................8 Capabilities .................................................................................9 GHD’s Task Development Process ..................................................12 4. Proposed Personnel 13 GHD Team ..................................................................................13 5. Quality Assurance/ Quality Control Procedures 20 Quality Control ..........................................................................20 © GHD 2025: This document is and shall remain the property of GHD. The document may only be used for the purpose for which it was commissioned and in accordance with the Terms of Engagement for the commission. Unauthorized use of this document in any form whatsoever is prohibited. GHD | City of Diamond Bar | Professional On-Call - SOQ - Traffic and Transportation Engineering Services 3 Qualifications and Experience 01 Qualifications and Experience01 About GHD GHD provides engineering, environmental, planning, advisory, digital, and construction services to private and public sector clients. Operating globally and delivering services locally, we are able to offer clients the ability to develop a working relationship with our local staff while having access to our global experience base. Put simply, we work where our clients work. Our people offer decades of knowledge, as well as a deep understanding of the challenges facing communities today. We deliver projects with high standards of safety, quality, and ethics across the entire asset value chain. Driven by a client service- led culture, we connect the knowledge, skill, and experience of our people with innovative practices, technical capabilities, and robust systems to create lasting community benefits. GHD FAST FACTS Date GHD Started Employees Worldwide Employees in California Offices in Southern California 1928 12,000+ 425+ 5 Why GHD is the BEST Choice We’re stable. Our business is financially stable and we have the resources to invest in future growth. Our people care. As we’re a 100% staffowned company, our people have a vested interest in our success - we understand the importance of “getting it right.” We innovate. We look at infrastructure challenges from a different perspective. Our people challenge the status quo. They’re not afraid to make life easier for our people, clients, and communities. We’re local. Our people live in the communities in which they work. We operate globally and deliver services locally. We have the right management approach. Our assigned Project Managers know that delivering projects on time and within budget begins with a project management philosophy of transparency and active engagement with the City. We’re connected. Over the past 96 years, we have built long-term, trusted relationships with stakeholders, influencers, and leaders around the world. You can trust us. 5,000+ clients rely on us to bring their projects to life and care for them into the future. We deliver. No matter where the project is, how small or large, our 12,000+ people can deliver your project on time and on budget. 01. Qualifications and Experience | 3 GHD | City of Diamond Bar | Professional On-Call - SOQ - Traffic and Transportation Engineering Services As-Needed Contracts City of Diamond Bar Office GHD Office Locations 2526 13 10 14 1833 38 19 20 21 11 15 37 30 29 2836 12 98 331 2727 17 32 39 1 4 16 23 2434 56 22 35 41 40 42 43 GHD's On-Call Contracts in Southern California and the Central Coast GHD has supported clients across Southern California and the Central Coast on Capital Improvement Program (CIP) projects under on-call contracts—many of which are still ongoing. Our services have ranged from engineering design to environmental support and construction management. Through years of experience, we have developed the agility and expertise to respond quickly to task order requests, address agency concerns, and deliver guidance on a wide range of public works projects. Our team consistently meets agency schedules and deadlines while providing high-quality facilities engineering and design solutions. 1. Orange County Sanitation District Annual Professional Design Services 2. Orange County Public Works As-Needed A/E Services 3. City of Anaheim As-Needed Water/Civil Engineering (Eng.)Services 4. City of Anaheim As Needed NPDES Services 5. City of Huntington Beach As-Needed Water Eng. Services 6. City of Huntington Beach As-Needed Civil Eng. Services 7. Long Beach Utilities Department As-Needed Eng. Services 8. City of Long Beach As-Needed Civil Eng. Services 9. Los Angeles County Public Works (LACPW) As-Needed Environmental Testing, Inspection & Monitoring Services 10. As a subconsultant: LACPW As-Needed Eng. Design and Support Services; LACPW As-Needed Eng. Services; LACPW As-Needed Services for Water Quality Monitoring and Related Services 11. Jurupa Community Services District As-Needed Professional General Eng. Services 12. Central Basin Municipal Water District As-Needed Eng. Services 13. Casitas Municipal Water District Electrical On Call 14. City of Irvine As-Needed Eng. Services 15. UC Irvine Medical Center As-Needed Eng. Services 16. City of San Juan Capistrano Professional Consulting Services 17. City of Seal Beach - As-Needed Professional Eng. Services 18. Inland Empire Utilities Agency As-Needed Eng. Services 19. City of Corona Water/Wastewater (WW) Support Services As-Needed 20. City of Moreno Valley As-Needed Civil Eng. Services 21. Eastern Municipal Water District As-Needed Eng. Services 22. City of Oceanside Water Utilities Department As-Needed Civil Eng. 23. City of Carlsbad As-Needed Water and Recycled Water Services 24. City of San Diego As-Needed Eng. Services 25. City of Oxnard Consulting Services for WW As-Needed 26. City of Oxnard Consulting Services for Recycled Water Treatment Process Support 27. City of Culver City As-Needed Eng. Services 28. City of Grover Beach As-Needed Eng. Services 29. County of San Luis Obispo Water & WW Eng. As-Needed 30. County of San Luis Obispo Flood Control District As-Needed 31. City of Pasadena Eng. As-Needed 32. City of Los Angeles Department of Public Works, Bureau of Eng. As-Needed Eng. Services 33. Inland Empire Utilities Agency Planning & Compliance Master Services 34. Port of San Diego As-Needed Asset Management Services 35. Los Angeles County Sanitation Districts As-Needed Eng. Services 36. City of Arroyo Grande Water and WW Eng. As-Needed 37. As a subconsultant: County of Santa Barbara WW Treatment As-Needed 38. Western Municipal Water District As-Needed 39. City of Ontario As-Needed Design Services 40. City of Indian Wells On-Call Services 41. City of Rancho Cucamonga On-Call Services 42. City of Hesperia On-Call Services 43. City of Rancho Mirage On-Call Services 01. Qualifications and Experience | 4 GHD | City of Diamond Bar | Professional On-Call - SOQ - Traffic and Transportation Engineering Services Client City of Chico Completion Date 2003 - Ongoing Client Reference Brendan Ottoboni, Director of Public Works T: 530 879 6930 E: brendan.ottoboni@chicoca.gov Project task orders include: –Active Transportation Plan. Supporting the City to develop an Active Transportation Plan (ATP) that establishes a vision for improving walking and bicycling while identifying short and long-term action plans for implementable projects, programs, and policies. –SB SR 99/Eaton Road Roundabout ICE and PA/ED/PS&E. Utilized available information from the NB intersection evaluation to complete the ICE in 2022. GHD is currently under contract to begin PA/ED. –Esplanade ATP. Performed PS&E for Class I bike path along Esplanade from Memorial to 11th, Class III improvements along Oleander and a new roundabout at Memorial/Oleander. Construction is anticipated in 2024. –Hegan Lane Corridor Improvements. Planning study for Hegan Lane corridor improvements and possible Park Avenue extension. –NB SR 99/Eaton Road Roundabout ICE, HSIP and PS&E. As part of the ICE, development of operations study and improvement alternatives, we prepared the HSIP Grant Application Form for Cycle 8 to construct a five-leg roundabout with adequate bike and pedestrian access. GHD then completed the PS&E for the intersection and construction was completed in 2022. –Development Impact Fee Nexus Study and Update. Updated the Development Nexus Fee Program including nine fee elements, including Transportation (Streets and Bikeways), Parks, Fire, Police, Administration, Sewer, and Storm Drainage. City of Chico On-Call Professional Engineering Service | Chico, CA On-Call Roadway Transportation Services | San Luis Obispo, CA ClientCity of San Luis Obispo Public Works Transportation Planning/Engineering Completion Date 2016 - Ongoing Client Reference Luke Schwartz, Transportation Manager T: 805.781.7190 E: LSchwartz@slocity.org GHD has provided on-call transportation planning, traffic operations, civil design, and development review services for the City of San Luis Obispo since 2009. Our strong partnership predates the formal on-call agreement and has continued for over a decade. GHD was re-selected for On-Call Transportation Services in 2017 and Civil Engineering Design Services in 2016. We supported the City in developing multimodal transportation impact study guidelines by peer-reviewing draft requirements, performance metrics, significance thresholds, and mitigation priorities. To date, GHD has completed over $1.5M in work under these contracts, including nearly $300K in development impact analyses. The City’s guidelines require detailed evaluation of all modes—bicycle, pedestrian, transit, and vehicular—meeting or exceeding San Joaquin County standards. Our work spans short, focused studies to multi-year efforts, such as the San Luis Ranch Specific Plan, which involved complex phasing, environmental coordination, and stakeholder consensus-building with agencies including Caltrans. Highlighted Projects: Higuera Street Widening (HSIP): Prime consultant for environmental clearance, right-of-way support, and design to add a continuous two-way left-turn lane, improving corridor safety. California Blvd & Taft Street Roundabout: Design of a single-lane roundabout to meet future traffic demands and enhance safety for bicyclists and pedestrians, including extension of the Railroad Safety Trail. On-Call Transportation Engineering Support Services | San Joaquin County, CA Client San Joaquin County Completion Date 2012 - Ongoing Client Reference Jeffrey Levers T: 209.953.7631 E: jlevers@sjgov.org GHD has partnered with San Joaquin County since 2012, delivering services such as VMT guidelines and mitigation frameworks under SB 743, traffic impact studies, improvement studies, and roundabout design engineering. Key projects include: Countywide CEQA VMT Threshold & Mitigation Measures: Developed VMT guidelines using the SJCOG model, established thresholds for residential, employment, and unique land uses, and created a tiered analysis process with an online screening map, full model runs, and mitigation strategies. Recently updated thresholds and mitigation measures to reflect Mountain House’s incorporation. Eleventh/Grant Line Roundabout Geometry Study: Addressed crash issues caused by low Phi angles. Proposed interim fixes (rumble strips, warnings, minor redesigns) and an ultimate configuration to improve safety. Additional On-Call Projects: –STAA Network Improvement Study –Byron Road/Grant Line Road Roundabout Design –SouthWinds Church Phase 3 Impact Analysis –French Road/Ash Road Roundabout Feasibility –Cherokee Road Corridor Improvement Study Current Work (Separate from On-Call): Mariposa Road & Escalon-Bellota Road Specific Plan: A $86K study addressing safety and operational concerns along a 13.5-mile corridor impacted by growth in Stockton, Escalon, and surrounding areas. Identifies near-term and future improvements. GHD Project Experience 01. Qualifications and Experience | 5 GHD | City of Diamond Bar | Professional On-Call - SOQ - Traffic and Transportation Engineering Services Project Approach and Understanding 02 Project Approach and Understanding Project Understanding – Traffic Engineering The City of Diamond Bar seeks expert, adapatble traffic engineering support to assist with operations, improve safety, assist with ITS and traffic management. GHD understands these priorities and will deliver responsive services to the City. Transportation planning is a core strength of GHD’s Mobility and Places group, which integrates traffic engineering, urban planning, and streetscape design within our Lovable Places framework. This approach emphasizes community engagement, informed decision-making, and practical solutions that enhance mobility and livability. Whether developing complete streets concepts, active transportation plans, traffic calming strategies, or transportation impact fee programs, GHD applies rigorous attention to detail and quality control at every stage. Task orders will address both short- and long-term circulation and access needs, guided by Steven Latino, an experienced leader in traffic engineering, intersection control evaluation (ICE), traffic impact studies, and safety analysis. Our commitment is to provide data-driven, cost-effective solutions aligned with the City’s vision for a safe, efficient, and connected transportation network. •Active lifestyles and wellbeing •Community connections •Feelings of safety •Healthy food •Connection to Country •Sense of belonging and local identity •Cultural expression •Night and day activity •Participation and sense of ownership •Resilience •Accessible and affordable •Strong governance •Local Famous Businesses •Innovation and creativity •Diversity of jobs •Key industries and institutions •Quality urban design •Supportive social infrastructure •Healthy natural environment •Connected Communities 02 02. Project Approach and Understanding | 8 GHD | City of Diamond Bar | Professional On-Call - SOQ - Traffic and Transportation Engineering Services roadway and infrastructure improvements, including leading pedestrian intervals, increased pedestrian crossing times, wider bicycle lanes and sidewalks, protected bike lanes and intersections, bulbouts, and median refuges, are typically implemented to increase safety, connectivity, and predictability for people traveling by foot and bicycle. Transportation Demand Management/ Traffic Analysis Comprehensive citywide planning efforts that GHD has completed during the course of past on-call contracts include preparing Circulation Element Updates, Traffic Impact Analysis Guidelines, Development Impact Fee Updates, Travel Demand Model Updates, Active Transportation Plans, Bicycle and Pedestrian Master Plans, and Systemic Safety Analyses. GHD is familiar with local and state requirements for impact analysis, the rules and requirements of CEQA, and applicable legislation like SB 743. GHD has successfully prepared and defended impact studies for high-profile development projects in many communities. Bike/Pedestrian Safety Education/Safe Routes to School Safe Routes to School (SRTS) is a part of the Transportation Planning field which focuses on increasing safety of students and families walking and bicycling to school through a set of methods referred to as the “5 Es”: Engineering, Education, Enforcement, Encouragement, Emerging Technologies. GHD staff bring diverse experience throughout California developing SRTS Plans and Programs, including context-appropriate application of all five “Es” from the school to the County level. Further, our staff have helped design infrastructure improvement plans and safety education, encouragement, and enforcement programming for a range of communities. Active Transportation Design GHD specializes in active transportation design, following the guidelines and design standards recognized and established by Caltrans and local agencies. In addition to our on-street and off-street pedestrian and bicycle facility design capabilities our active transportation design services include complete streets, safety through environmental design, curbside management/mobility as a service, Capabilities Traffic Operations With an increasing programming emphasis and funding priority towards active transportation and transit improvements, today’s traffic analyses also need to help quantify trade-offs between transportation modes when vehicular capacity may be reduced to improve safety and operations of bicycle, pedestrian, and transit modes. Prior to developing an analysis model, GHD collects field data along study corridors by collecting counts by mode and classification, observing queues, saturated flow rates, and performing floating car travel time runs. Additionally, we often supplement field data with available “Big Data” from free sources (NPMRDS, PeMS, LEHD) and commercial sources (INRIX, Here, StreetLight, BlueFax, AirSage, Streetlytics, etc.) based on project needs. Traffic Signal Design, Timing Optimization, and Coordination Traffic signal design, street lighting design and signal timing has long been an integral specialty of GHD. Our long-standing reputation for completing complicated traffic signal projects makes us especially qualified for signalization and signal modifications anticipated in the City, in particular where substantial safety benefits can be achieved. GHD provides traffic and electrical engineering services such as reviewing and preparing PS&E for traffic signal and street lighting projects (both new installations and retrofits), signal interconnect systems, signal timing plans, in-roadway illuminated pedestrian crosswalks, pedestrian hybrid beacons, emergency vehicle preemption and priority systems, and parking lot lighting, as well as other traffic engineering functions related to traffic operations and safety. Active Transportation and Complete Streets Operations We know active transportation is a priority for the City. We fully embrace the principles of Complete Streets, Road Diets, and Green Streets, and are familiar with emerging guidance and standards being developed for active transportation modes. However, we understand that active transportation planning must consider operational impacts to vehicular modes of transportation. Active transportation 02. Project Approach and Understanding | 9 GHD | City of Diamond Bar | Professional On-Call - SOQ - Traffic and Transportation Engineering Services intersection enhancements, safe routes to school design, lighting design, place-making/identity creation, signing/marking, landscape architecture, water quality/low impact development, land use planning and optimization, transit, and more. All these combined, GHD can provide you with context sensitive active transportation solutions. Roadway Geometrics/PS&E Documents GHD staff regularly complete roadway design and are wellversed in the standards and policies contained in the Caltrans Highway Design Manual, AASHTO Policy Manual, and California MUTCD, CalDAG, and Title 24. GHD will prepare all phases of plans, specifications and estimates for any of the variety of capital improvement projects that the City may have including transportation, complete streets, signing and pavement marking, storm drain conveyance, wastewater conveyance, road rehabilitation, etc. We prepare detailed designs with strict attention to all elements of the design. Our engineers are wellversed in preparing specifications using Caltrans Standards, Greenbook Standards, or Local Agency Standards. Roundabout Operations Since our staff first embraced the use of roundabouts over 10 years ago, we have been involved in over 130 roundabout planning and/ or design projects and conducted Intersection Control Evaluations (ICE) at over 20 locations following Caltrans’ adopted process. We have hosted numerous roundabout trainings for Caltrans staff and various local agency clients. We understand the limitations of various software packages in adequately modeling roundabout operations, and just as importantly, we understand the importance of simulation to visualize operational and safety benefits to stakeholders. Traffic Calming GHD has years of experience designing and implementing traffic calming measures for downtown corridors to neighborhoods to rural roadways. GHD uses both innovative design measures and tried and true traffic calming design elements to help local agencies improve safety of all users, reduce speeds and enhance the road user’s experience through context sensitive solutions. The GHD team has a broad breadth of experience in doing intersection specific traffic calming in the form of roundabouts (modern and mini), traffic circles, raised intersections, traffic signals, pedestrian signals, bulb outs, chicanes and more. Safety Investigations GHD has a long history of conducting traffic investigations as part of On-Call Traffic Engineering contracts. The primary goal of the investigation process is to provide relief from trafficrelated 02. Project Approach and Understanding | 10 GHD | City of Diamond Bar | Professional On-Call - SOQ - Traffic and Transportation Engineering Services impacts, such as neighborhood speeding, cut- through traffic, traffic threats to pedestrian and bicycle safety, and school traffic safety. After collecting relevant traffic data and visiting the subject location, GHD can develop solutions with everyday functionality to improve the safety of the local street system. GHD can assist City staff with services such as, conducting quantitative effectiveness studies and feasibility analysis and preparing preliminary and final plans for the City to implement the needed traffic calming projects. Public Outreach Through our Spatial Science and Digital service lines, we have experience developing interactive GIS web- based tools that can significantly increase public participation reach – particularly in disadvantaged communities. An example interactive map GHD developed using Social PinPoint helped residents provide input and feedback without having to meet together. GHD has successfully worked with contentious stakeholder groups, including local, regional, and state agencies, to achieve consensus on controversial issues. Our Contract Manager and Technical Leads are also available to support City staff in presenting to the City Council and the numerous City commissions which may take an interest in the various task orders. Grant Funding Cost control is always a key element in projects of this nature. We can evaluate funding sources to note application timelines, eligibility of applicants, and the competitiveness of the program. The funding sources and financing mechanisms will then be evaluated to determine those most relevant to and appropriate for the design team’s concepts. Active Transportation and Safety Funding As the importance of transportation safety and non-motorized transportation mode shift continue to gain federal and state prioritization, so has new funding opportunities for active transportation and transportation safety projects. GHD also assists clients in developing winning funding applications. For example, our staff have developed or supported ATP applications resulting in $35.7 million of funding awarded to our clients over the four cycles of ATP. We have similar success in supporting HSIP and Sustainable Transportation Planning Grants and other award applications. Constructability, Estimating, and Peer Reviews GHD has experience performing peer review, constructability, estimating, and value engineering for various project types and delivery methods. The contribution of these reviews can add value to projects regardless of complexity, but especially where estimates are greater than the available budget. GHD dedicates teams of seasoned construction professionals to review the design documents for constructability. Reviews generally follow the GHD Constructability Process, which is based on the Construction Industry Institute’s Constructability Implementation Guide. Project Study Reports, Value Engineering and Feasibility Studies Our feasibility studies document all findings, design criteria, descriptions of each alternative, and rough cost estimates. We provide comprehensive services, including project management, data review, and coordination of project kickoff meetings. Our task leads develop detailed work plans to ensure that we achieve the goals and objectives identified for each project. Value Engineering and Feasibility Studies Our feasibility studies document all findings, design criteria, descriptions of each alternative, and rough cost estimates. We take a 30,000 foot level approach on all the various aspects of the proposed project, all the way through potential legal and environmental feasibility. We follow a similar approach with Value Engineering (VE). Aside from looking at creative solutions, our team surveys the region, the state, the nation and our international team to look at opportunities to provide value to your projects. As we go through this process, our project managers develop detailed work plans to ensure that we achieve the goals and objectives identified for each project. 02. Project Approach and Understanding | 11 GHD | City of Diamond Bar | Professional On-Call - SOQ - Traffic and Transportation Engineering Services After evaluation, the Planning phase lays out detailed plans, including timelines, responsibilities, and resources, with collaborative review to ensure alignment. The Execution phase follows, delivering the task according to the plan. The Review phase then verifies that work meets required standards, allowing for adjustments and benefiting from thorough communication with the City. Finally, the Closure phase formally completes the task, documents outcomes, and gathers feedback for future improvement. Each phase is integral to handling on-call tasks with precision and efficiency, leading to successful project outcomes. Understanding these phases is essential for managing on-call contracts, providing a roadmap for complex tasks and consistent, high-quality results. Most importantly, this process fosters clear communication and responsiveness with the City at every step, keeping all stakeholders aligned throughout the project’s lifecycle. Assuring Clear Communication and Responsiveness with the City Our “Task Development Process” for on-call contracts is a carefully designed framework for seamless and efficient project execution. This process ensures consistency, timely delivery, and desired outcomes across engagements, while prioritizing clear communication and responsiveness with the City. The graphic overview illustrates the multiple phases, each playing a vital role in the life- cycle of an on-call task. It begins with the Initial Request phase, where the scope and requirements are identified and documented, setting the stage for transparent communication with the City. Next is the Evaluation phase, assessing feasibility, resource allocation, and potential impact, with open lines of communication and prompt responsiveness to the City’s inquiries. GHD’s Task Development Process + 1 week from start GHD selects key team members for task. + 1 week from start GHD team meets with City to discuss and clarify project scope. + 1 week from scoping meeting GHD prepares scope, schedule, and fee for City review. Regular Communication GHD schedules meetings after discussing preferred frequency with the City PM. Task Execution Assessment GHD will review process with the City’s Project Manager to identify areas for process improvement. Focused Review Process Review meeting will precede City review period. GHD to prepare list of review items to aid in City Review. Start of Task Process City Initiates Task Identify Project Team Review Process and Improve Scoping Meeting Facilitated City Review Develop ProposalTask Execution REQUEST PHASE EVALUATION PHASE PLANNING PHASE CLOSURE PHASE EXECUTION PHASE GOAL + 2 weeks from Start City receives scope and fee for task 02. Project Approach and Understanding | 12 GHD | City of Diamond Bar | Professional On-Call - SOQ - Traffic and Transportation Engineering Services Proposed Personnel 03 This structure emphasizes consistency in our management approach and provides the City with a single, reliable point of contact. Our team combines technical expertise, local knowledge, and a collaborative mindset to meet the City’s needs efficiently and effectively. Each member brings a unique skill set that contributes to our comprehensive service delivery. Resumes for key personnel are available upon request. →GHD Team GHD has assembled a dedicated team of professionals with extensive experience in delivering successful municipal projects through on-call contracts. To ensure seamless coordination and clear communication, we are presenting the teams responsible for various services in a unified format. Proposed Personnel Steven Latino, PE, TE Contract Manager Todd Tregenza, AICP Principal-in-Charge Key Staff City of City Engineering Design SupportBrittany Zambrano, PE, QSD Erika Hall, EIT Electrical Erick Osorno, EE Traffic EngineeringKamesh Vedula, PE, TE Zach Stinger Transportation Planning Emily Shandy, AICP, LCI Brian Bacciarini GIS/CAD DraftingHaytham Daas, EIT Colby Phelps Graphics/Visuals Richard Leslie Grant Writing AssistanceRebecca Crow, PE Public Outreach Yosef Yip Technical Team Byung Lee, PE, TE Traffic Engineering Task Manager 03 03. Proposed Personnel | 13 GHD | City of Diamond Bar | Professional On-Call - SOQ - Traffic and Transportation Engineering Services For this on-call contract, we have mapped each proposed team member to their office location, giving you full visibility into where our specialists are based. The table shows individual placements, while the accompanying map highlights staff density across California. Our primary office for this contract is located in Irvine, where our Contract Manager, Steven Latino, PE, TE is based—positioning us to lead with strong oversight and direct access to key resources. This structure allows us to quickly activate the right talent from the right location, delivering fast, flexible, and locally informed support whenever and wherever you need it. Primary Office Location 320 Goddard Way, Suite 200 Irvine, CA 92618 Irvine Tustin Los Angeles Long Beach San Diego San Luis Obispo GHD Office locations and staff count LEGEND 10 18 16 2 XX 12 94 Meet your contract manager The success of on-call professional engineering services relies on responsive leadership, highly qualified available staff, and a deep understanding of municipal needs. Steven Latino, PE, TE, will serve as GHD’s Contract Manager, bringing extensive experience and a strong track record in delivering high-quality public works projects. His leadership, supported by our multidisciplinary team and broad resources, provides for the timely, efficient, and tailored support to the City for all task orders. Why Steven? Local. Focused his career in providing services throughout Los Angeles County and surrounding communities. Experienced. Understands the City standards, procedures, and personnel. Lessons learned on over 30+ complete streets and roadway improvement projects. Practical. Hands-on experience in multiple phases of project delivery, field investigations, planning, permitting, design, and construction. Specialized experience. Working with multiple municipalities for nearly a decade on numerous projects. Qualifications: MBA, Business Administration; BS, Civil Engineering; Civil Engineer, CA #73430; Traffic Engineer, CA #2902 22years experience 03. Proposed Personnel | 14 GHD | City of Diamond Bar | Professional On-Call - SOQ - Traffic and Transportation Engineering Services 03. Proposed Personnel | 14 Contact +1 657 622-4920 steven.latino@ghd.com Location Irvine, CA Years' Experience 22 Professional Licenses –Civil Engineer, CA #73430 –Traffic Engineer, CA #2902 Qualifications/Accreditations –MBA, Business Administration, University of Redlands, Redlands, CA –BS, Civil Engineering, Purdue University, West Lafayette, IN Key Technical Skills –Public Works/Transportation – Design, Project Delivery –Project Specifications (Caltrans/ Greenbook) Memberships –American Public Works Association, Board, 2023 - Present) –Institute of Transportation Engineers, Riverside and San Bernardino Counties Board, 2009-2012, 2021-2024 Why Steven? 22+ years managing municipal on-call contracts and task orders. Expert in Southern California standards and permitting. Strong leadership and client communication. Steven brings over 22 years of experience managing public works and transportation projects, specializing in on-call and task order delivery. His expertise spans planning, permitting, design, and construction, supported by hands-on field experience that minimizes constructability challenges and change orders. Steven ensures efficient, responsive service and proactive communication with municipal clients. Relevant Experience De Portola/Jedidiah Smith Roads Roundabout | City of Temecula | Project Manager. Steven managed preliminary design, PS&E development, and public outreach for a modern roundabout to improve traffic flow and safety while preserving rural character. Oversaw design features such as expanded splitter islands, oval geometry, angled crosswalks, and equestrian accommodations. Ensured design fit within existing right-of-way and advanced plans to 90% completion. Avenue 52 Roundabout | City of La Quinta | Project Manager. Steven led evaluation and redesign concepts for an existing roundabout to improve safety and prepare for future expansion. Directed development of intersection geometrics, lane configurations, and compliance with national standards. Coordinated concept presentations to City Council and managed progression toward bid-ready documents. Jackson Street Complete Streets | City of Indio | Project Manager. Steven delivered PS&E for corridor improvements, including sidewalks, ADA upgrades, landscaping, and artistic shade structures. Coordinated design with artists and structural engineers, led site visits, identified ADA deficiencies, and managed public outreach per grant requirements. Shoreline Drive Realignment | City of Long Beach | QA/QC Technical Specification Writer. Steven provided QA/QC for technical specifications supporting roadway realignment, intersection improvements, and bike path construction. Ensured compliance for traffic flow enhancements, stormwater conveyance systems, and sustainable transportation features. Warner Trail Improvement Project – Phase 1 | City of Indian Wells | Project Manager. Steven managed engineering services for storm drain repairs, pavement rehabilitation, curb ramp upgrades, and traffic signal modifications. Coordinated with the City, school staff, and water district for right-of-way acquisition, scheduling, and utility adjustments. Oversaw procurement of long-lead items to meet construction timelines. Steven Latino, PE, TE Contract Manager 03. Proposed Personnel | 15 GHD | City of Diamond Bar | Professional On-Call - SOQ - Traffic and Transportation Engineering Services Contact +1 925 849-1027 byung.lee@ghd.com Location Concord, CA Years' Experience 24 Professional Licenses –Civil Engineer, CA, #90221 –Traffic Engineer, CA #2908 Qualifications/Accreditations –MS, Civil & Environmental Engineering, University of California, Berkeley, CA Key Technical Skills –Traffic Engineering Design –Traffic Signal Design/Intelligent Transportation Systems (ITS) Memberships –Institute of Transportation Engineers, Bay Area Section Why Byung? 24 years in traffic operations and signal design. Proficient in Synchro, SimTraffic, and VISSIM modeling. Develops traffic calming and multimodal strategies. Byung is a senior traffic engineer with 24 years of experience in traffic operations, signal design, and Intelligent Transportation Systems (ITS). He has delivered complex projects involving traffic signal modifications, signing and striping plans, lighting design, and safety analyses. Relevant Experience California High-Speed Rail Initial Construction Segment 1 | California High-Speed Rail Authority | Traffic Engineer. Managed traffic signal modifications, temporary signals, and new signalized intersections for 70 locations in Fresno. Designed 19 miles of street lighting, performed signal warrant analysis for 15 intersections, and developed interim/permanent ITS improvements including fiber optics, wireless broadband, message signs, flashing beacons, and vehicle priority systems within City and Caltrans ROW. Mission Bay Project | San Francisco Municipal Transportation Agency | Traffic Engineer. Designed or modified 24 traffic signals and prepared signing/pavement delineation for 34 blocks, including a roundabout and two-way cycle track near the Golden State Warriors Arena. Integrated signal priority for light rail, coordinated with multiple agencies for intersection geometry and transit signal systems, and addressed at-grade Caltrain crossings and I-280 signals. East Bay Bus Rapid Transit (BRT) | Alameda-Contra Costa Transit District | Project Engineer. Delivered PS&E for 33 raised-platform stations and dedicated bus lanes along a 9.5-mile corridor. Prepared signing/striping plans, maintenance-of-traffic schematics, and construction schedules. Refined station locations, pedestrian access, and traffic detours during construction. Artesia Great Boulevard Improvements | City of Long Beach | Traffic Engineer. Prepared signal modification plans for 12 intersections as part of corridor upgrades adding Class II bike lanes, pedestrian safety features, and transit improvements. Integrated Adaptive Traffic Control System, enhanced crossings, and coordinated upgrades for lighting, bus shelters, and bulb-outs. West Texas Street Complete Streets Project | City of Fairfield | Traffic Engineer. Designed five signal modifications and one new signal for a multimodal corridor improvement. Assisted with construction documents, quantity take-offs, and cost estimates to support project delivery. Byung Lee, PE, TE Traffic Engineering - Task Manager 03. Proposed Personnel | 16 GHD | City of Diamond Bar | Professional On-Call - SOQ - Traffic and Transportation Engineering Services Contact +1 858 244-6967 brittany.zambrano@ghd.com Location San Diego, CA Years' Experience 10 Professional Licenses –Civil Engineer, CA #89410, AZ #81394, FL #99717 –Qualified Stormwater Pollution Prevention Plan (SWPPP) Developer Qualifications/Accreditations –BS, Civil Engineering, Loyola Marymount University, Los Angeles, CA Key Technical Skills –Roundabout Design –Roadway Design and Complete Streets –Project Management Memberships –American Society of Civil Engineers –American Public Works Association –Institute of Transportation Engineers Why Brittany? Roadway and site development experience, including ADA compliance. Prepares detailed construction documents. Focused on sustainable, practical designs. Brittany provides civil engineering support for roadway and site development projects, including grading, paving, and drainage design. She emphasizes practical, sustainable solutions and coordination with multidisciplinary teams. Relevant Experience Orange County Connect Shared Use Path | Orange County Transit Authority | Project Manager. Managed design for Rails-to-Trails conversion transforming former Pacific Electric Right of Way into a 0.85-mile biking and walking trail between Santa Ana and Garden Grove. Oversaw traffic operations analysis, utility investigations, and agency coordination. Worked with multidisciplinary teams to minimize utility conflicts and relocations. Kelly and Park Drive Road Diet & Roundabouts | City of Carlsbad | Civil Engineer. Provided quality control and design coordination for a road diet project improving multimodal travel and upgrading two intersections with a compact roundabout and bulb-out design. Addressed challenges including school traffic congestion, environmental permitting, and limited right-of-way, and supported innovative design changes for public outreach. West Texas Complete Streets Project | City of Fairfield | Project Manager (Construction Phase), Civil Engineer, Design Lead. Led design and PS&E for one mile of corridor improvements, including Class IV bike lanes, widened sidewalks, raised medians, signal modifications, and a midblock crossing with RRFB. Managed construction-phase coordination to ensure safety and multimodal enhancements. Avenue 64 Complete Streets Project | City of Pasadena | Civil Engineer, Design Lead. Directed design for roundabout and traffic calming features in a residential area. Responsibilities included roadway geometry, storm drainage design, client and subconsultant coordination, utility conflict resolution, and schedule and budget oversight. SR 156 Interchange | Transportation Agency for Monterey County | Civil Engineer. Provided peer review and traffic operations analysis for a Caltrans-designed roundabout interchange. Assisted with Intersection Control Evaluation (ICE) Step 1 and Step 2 to support implementation and improve operational efficiency. Brittany Zambrano, PE, QSD Civil Engineering - Support Lead 03. Proposed Personnel | 17 GHD | City of Diamond Bar | Professional On-Call - SOQ - Traffic and Transportation Engineering Services Quality Assurance/ Quality Control 04 →Quality Control Our in-house Quality Control Plan includes the following items that will be implemented by Todd Tregenza, our Principal in Charge. Work is independently checked, corrected, and backchecked by a person qualified and appropriately registered in the State of California. Quality Management As part of our project management and delivery process, GHD operates under a Practice Quality Management System, ISO 9001:2015, certified by Lloyds Register Quality Assurance. Quality Assurance/ Quality Control Procedures As an employee-owned company, we take pride in our work and understand that a sustainable business depends on client satisfaction. Our quality management process emphasizes delivering the products on time, within budgets, and meeting or exceeding our client’s requirements and expectations. Verification and Documentation Delivery of plans and computations will be accompanied by supporting documentation that demonstrates Quality Control Plan compliance. GHD QA/QC Policy At GHD, we harness the experience and capability of our connected global network to deliver quality outcomes to our clients across the entire asset value chain. We are committed to the continual improvement of the effectiveness of our Quality Management System, which encompasses all professional services undertaken by our clients. Our core purpose is to create lasting community benefits together with our clients. We are guided by our client service led strategy, which responds to the global demands of water, energy, and urbanization. The overall objective of this policy is to articulate our commitment to delivering quality services to our clients, in a responsive, safe, and cost effective manner. 04 04. Quality Assurance/Quality Control Procedures | 20 GHD | City of Diamond Bar | Professional On-Call - SOQ - Traffic and Transportation Engineering Services Client Values and Goals Drive Our Message Client Name RFP No. 000000 Month Day, Year Proposal Optional Text Field