Diamond Bar City Council
June 16, 2026

RFP Professional On-Call Traffic and Transportation Engineering Services: February 2026 City of Diamond Bar
2 F. Meetings / Other Professional Services - Our team actively supports City Council, Traffic Commission, and community presentations, providing technical expertise in a clear and accessible manner. We also offer grant funding assistance, public outreach engagement, and additional related services, ensuring the City maximizes opportunities for funding, stakeholder alignment, and project success.

2. DESCRIPTION OF CONSULTANT TEAM
ADVANTEC offers the breadth of expertise and specialized knowledge required to successfully support the City of Diamond Bar through this on-call contract. Our team of highly qualified professionals brings over 300 years of combined experience providing on-call professional engineering services to public agencies throughout Southern California. For more than two decades, we have helped clients achieve their mobility and infrastructure goals through responsive service, proactive project management, and consistently high technical standards. Our proven team—experienced in every discipline outlined in the RFP—ensures the City receives seamless coordination, efficient project delivery, and innovative, cost-effective solutions tailored to local needs.

2.1 Project Leadership and Team Structure
ADVANTEC recognizes that delivering high-quality, responsive services for traffic, transportation, and public works projects begins with strong leadership and a technically proficient team. Under this contract, Mr. Armando Solis, PE, will serve as Project Manager, bringing over 26 years of hands-on traffic engineering experience supporting more than 40 Southern California cities with innovative, data-driven mobility solutions. Mr. Solis combines technical depth with exceptional management and communication skills, ensuring seamless coordination, rigorous quality control, and on-time delivery for all work assignments. He will be supported by a robust team of California-registered Civil, Electrical, and Traffic Engineers—each bringing specialized expertise to the City’s on-call needs.

David Madera, PE, TE; John Dorado, PE, TE; George Dore, PE, TE; Ryan Miller; Elizabeth Diaz; Jose Guedes, TE; and Delfino Esquer will serve as Task Leaders, collectively contributing more than 180 years of experience in traffic and transportation engineering, ITS design, plan checking, and project management for similar on-call contracts.

Together, this seasoned team offers unparalleled technical expertise and local familiarity, ensuring the City of Diamond Bar benefits from both strategic insight and day-to-day responsiveness. Supported by more than a dozen qualified staff—all based locally in Diamond Bar—ADVANTEC is uniquely positioned to provide efficient service, rapid response, and continuous support throughout the City’s on-call assignments.

Figure 3.1 illustrates the proposed organizational structure of our project team. The following table highlights our Task Leaders’ recent accomplishments and current availability.

Figure 3.1 – Organization Chart

RFP Professional On-Call Traffic and Transportation Engineering Services: February 2026 City of Diamond Bar
3 KEITH RAND, PE, TE
Project Director
Availability: 75%
Mr. Keith Rand serves as Principal of ADVANTEC’s Diamond Bar office, providing executive oversight and quality assurance for all on-call engineering assignments. With over 30 years of focused experience in traffic and transportation engineering, ITS planning and design, and traffic signal systems, Keith offers deep technical knowledge and strategic leadership across all project phases—from planning and design through construction and operations.

Relevant Project Experience
ß On-Call Traffic Engr Services, RCTD, CA
ß On-Call Traffic Engr and Traffic Plan
Check Services, Anaheim, CA
ß On-Call Traffic Engr Services, Upland, CA
ß On-Call Bridge & Civil Engr & Other
Design & Support, City of Los Angeles, CA
ß On-Call Prof Engr Services, Diamond Bar, CA
ß LACDPW On-Call Traffic Design Services, Task
Order, Las Tunas Road TSSP, LA County, CA
ß LACDPW On-Call Traffic Design Services, Task
Order. Las Avlon Blvd TSSP, LA County, CA
Years of Experience: 30 Years with Firm: 7
Registrations: CA PE C60090,CA TR2103I
Education: BS Civil Engr, San Diego State, 1992,
Professional Affiliations: ITE, OCTEC

ARMANDO SOLIS, PE
Project Manger
Availability: 75%
Mr. Armando Solis is a Registered Civil Engineer with more than 26 years of specialized experience in traffic engineering, traffic operations, and intelligent transportation systems. He has successfully managed and delivered numerous design projects for local agencies across Southern California, including the Cities of Anaheim, Corona, Yorba Linda, Carson, and Caltrans. Armando’s expertise spans roadway safety, pavement delineation, signing, traffic signal timing and coordination, ramp metering, lighting, ITS design, fiber-optic communication systems, traffic control, and construction staging. Recognized for his hands-on leadership and client-focused approach, Armando ensures that each assignment advances the agency’s goals while maintaining high standards of safety, quality, and efficiency..

Relevant Project Experience
ß On-Call Traffic Engr Services, Anaheim, CA
ß On-Call Transp. Engr, LACDPW
ß On-Call Traffic Engr. Services, Corona, CA
ß On-Call Traffic Engr. Services, Upland, CA
ß Traffic Signal Design Services, Carson, CA
ß Traffic Signal Design, Duarte, CA
ß Traffic Signals Impr. Study, Duarte, CA
ß On-Call Prof Engr Services,Diamond Bar, CA
ß LACDPW On-Call Traffic Design Services, TO: Las
Tunas Road TSSP, LA County, CA
ß Caltrans D12: I-405 Multi-Asset Management
Project, Orange, CA
ß On-Call Bridge & Civil Engr & Other Design &
Support, Valley Blvd, City of Los Angeles, CA
ß 2nd Street Bridge over Marine Stadium Rehab.,
Long Beach, CA
Years of Experience: 26 Years with Firm: 3
Registration: CA PE C72012
Education: BS, Civil Engr, Cal State Fullerton, 1999
Professional Affiliations: ITE, OCTEC

JOSE GUEDES, TE
Traffic Management
Systems/ Signal
Operations Task Leader
Availability: 75%
Mr. José Guedes is a Traffic Engineer with more than 35 years of specialized experience in traffic operations, and signal coordination across Southern California. He brings a strong background in Traffic Management Center (TMC) operations, having managed the City of Irvine’s TMC for over 15 years and led numerous citywide and regional synchronization programs. Since 2010, José has delivered 15 regional signal synchronization projects for SBCTA, OCTA, and multiple local agencies, demonstrating a deep understanding of traffic operations, agency coordination, and system optimization. Additionally, José has managed on-call signal operations and traffic engineering services for the Cities of Chino Hills since 2010 and has worked with DB on-call tasks from 2010-2018. His recent accomplishments include implementing the Adaptive Traffic Signal System for the City of Culver City and leading the Adaptive/Traffic-Responsive System Upgrade for the City of Alhambra.

Relevant Project Experience
ß Adaptive Traffic Signal System Design and
Implementation for City of Culver City
ß Adaptive Traffic System, Culver City
ß Adaptive/Traffic Responsive Upgrade,
Alhambra
ß CV Sync Program Phase I Traffic Signal
Synchronization, CVAG
ß Citywide Signal Assessment & Master Plan,
Upland
ß Citywide Traffic & Mobility Study, Glendale, CA
ß On-Call Traffic Signal Operations, Chino Hills
ß On-Call Traffic Engr Services, Irvine
ß On-Call Traffic Engr Services, Glendale

RFP Professional On-Call Traffic and Transportation Engineering Services: February 2026 City of Diamond Bar
4 Years of Experience: 36 Years with Firm: 16
Registration: Professional Traffic Engineer, CA,
TR1861
Professional Affiliations: Institute of
Transportation Engineers (ITE)
Education:

M.S, Transportation Engr, UC Irvine, 1990
B. S., Civil Engr, Universidade de Sao Paulo, Brazil, 1986

DAVID MADERA, PE, TE
Design/PS&E/Plan
Checking Task Leader
Availability: 75%
Mr. David Madera is a Registered Civil and Traffic Engineer with more than 25 years of broad experience in traffic and transportation engineering, ITS planning and design. His technical background includes traffic signal and communication system design, transit signal operations, signing and striping, lighting design, stage construction and traffic control, and transportation management planning for city, county, and Caltrans facilities. David has led numerous on-call projects including PS&E and traffic control plans (TCP) plan checking, including most recently the City of Anaheim TCP Plan checking Relevant Project Experience.
ß On-call Traffic Control Plan Checking,
Anaheim
ß On-Call Traffic Engr PS&E Avalon, LACDPW
ß On-Call Traffic Engr, Los Angeles
ß On-Call Traffic Engr Services, Corona, CA
ß On-Call Traffic Engr Services, Menifee, CA
ß On-Call As-Needed Engr Design Services, San
Gabriel Valley COG
Years of Experience: 25 Years with Firm: 3
Registration:
2006, Professional Traffic Engineer, CA, TR2354
2007, Professional Civil Engineer, CA, C71391
Education: BS, Civil Engr, Cal Poly Pomona, 1999
Professional Affiliations:

RSBITE President (2026); RSBITE Board (2024-
Present); Orange County Traffic Engr Council
JOHN A. DORADO, PE
ITS and TransSuite/SCOOT
Task Leader
Availability: 75%
Mr. John Dorado is a Senior Project Manager with over 26 years of experience in the field of Intelligent Transportation Systems (ITS) engineering, traffic signal systems, and traffic safety. He worked for Transcore previously and is very familiar with TransSuite as well as SCOOT. He has also provided on-call Traffic Engineering services to many cities as shown below.

Relevant Project Experience
ß TransSuite and SCOOT Operations
ß On-Call Traffic Engr Services, Huntington
Beach, CA
ß On-Call Traffic Engr Services, Newport
Beach, CA
ß Orange On-Call Traffic Engr Services,
Orange, CA
ß On-Call Traffic Engr Services, Ontario, CA
ß On-Call Traffic & Transportation Engr Services,
Claremont, CA
ß On-Call Traffic Engr Services, Anaheim, CA
ß On-Call Traffic Engr Services, Mission Viejo, CA
Years of Experience: 26 Years with Firm: 10
Registration:

Professional Civil Engr, CA, 74405
IMSA Certified Traffic Signal Field Technician
Level II, No. BE_106965
IMSA Certified Traffic Signal Technician Level I,
No. AA_106965
IMSA Certified Work Zone Temporary Traffic Control
Technician, No. ZZ_106965
Education: BSCE Cal State Fullerton, 1999,
Professional Affiliations:

Institute of Transportation Engineers (ITE)
Orange County Traffic Engr Council (OCTEC)
International Municipal Signal Association (IMSA)

GEORGE DORE, PE, TE
Mr. George Dore brings 43 years of experience in transportation planning and engineering. He is currently providing staff augmentation at City of Upland 2 days a week to provide Traffic Engineering Studies and other engineering support. His technical expertise covers a wide range of traffic engineering and roadway infrastructure planning, safety and design.

Relevant Project Experience
ß On-Call Traffic Engr Services, Upland, CA
ß On-Call Traffic Engr Services, RCTD, CA
ß City of Rosemead, Rosemead Blvd at I-10
WB Ramps Termini (PA/ED & PS&E)
ß Traffic Signal Design, Duarte, CA
ß OC SAN Western Region Sewer Rehabilitation,
Orange County, CA
ß Morena Pure Water Project, San Diego, CA
ß Traffic Signals Improvements Study, Duarte, CA
ß University Ave Bike Lane Project, San Diego, CA
Years of Experience: 43 Years with Firm: 3
Registrations
Education: MS, Civil Engr, Georgia Tech, 1976
BS, Civil Engr, Louisiana Tech University

RFP Professional On-Call Traffic and Transportation Engineering Services: February 2026 City of Diamond Bar
5 Transportation Planning
Task Leader
Availability: 75%
Professional Civil Engineer, CA, C46585
Professional Traffic Engineer, CA, T 2126
Professional Affiliations:

ASCE, ITE, OCTEC

RYAN MILLER
Traffic Signal Operations
Availability: 75%
Ryan Miller is a project engineer with extensive experience in traffic signal synchronization and operations, and traffic modeling. Ryan has 14 years of experience and has worked on multiple traffic signal synchronization projects He is an expert in the use of Synchro, SimTraffic and Tru-Traffic software, and he has assisted with the implementation of Adaptive Signal Systems in Culver City and Traffic Signal Operational Improvements in Glendale.

Relevant Project Experience
ß OCTA, Garden Grove Blvd Regional TSSP,
Garden Grove, CA
ß Fairview Corridor TSSP, Costa Mesa, CA
ß Adaptive Traffic Signal System Design &
Implementation, Culver City
ß City of Glendale, Citywide Traffic & Mobility Study
ß Irvine Blvd Regional TSSP, Irvine, CA
ß Seal Beach, Seal Beach Blvd TMC & ITS Impr.
ß City of Alhambra, Adaptive Traffic/Traffic
Responsive Control
Years of Experience: 14 Years with Firm: 12
Registrations: EIT #138331
IMSA Certified Work Zone TCT No. ZZ_129800
Education: B.S., Civil Engr, Cal Poly Pomona, 2009
Professional Affiliations:

ITE, OCTEC

ELIZABETH DIAZ
Traffic Engineering PS&E
& Construction Support
Availability: 75%
Mrs. Elizabeth Diaz is a Senior Engineer with over 25 years of experience in roadway design, street lighting, traffic signals, traffic control, and signing and striping PS&E. She has excellent familiarity and working knowledge of the City of Los Angeles, Los Angeles County, Port of Los Angeles, and Caltrans standards and requirements. She is also proficient with several engineering and design software such as AutoCAD, Civil 3D, MicroStation, InRoads and SignCAD.

Relevant Project Experience
ß On-Call Caltrans District 9, Bridgeport CA
ß 2nd Street Bridge over Marine Stadium
Rehab., Long Beach, CA
ß N. First Ave Over Mojave River and Mojave
River Overflow Bridges, Barstow, CA
ß PA/ED & PS&E of Rosemead Boulevard at I10, Rosemead, CA ß University Avenue Bike Lane Project, San Diego,
CA
ß RCTC/Caltrans, SR-91 Corridor Improvement
Project Design/Build
ß SR-47 Schuyler Heim Bridge, Long Beach and
Los Angeles, CA
Years of Experience: 25
Years with Firm: 1
Education: Cal State LA – 2018, BS Civil Engr
Professional Affiliations:

Institute of Transportation Engineers (ITE)
American Society of Civil Engineers (ASCE)
Women in Transportation, Los Angeles
Orange County Traffic Engr Council

KRIS CAMPOS
Traffic Data Collection
Task Leader
Availability: 80%
Mr. Campos specializes in traffic data collection projects for Counts Unlimited including pTurning Movement Traffic Counts, Pedestrian/Bicycle Counts, Mainline freeway Counts, origin-destination studies, travel time studies, license plate studies, and parking surveys.

Relevant Project Experience
ß City of Irvine Annual Count Program / OnCall Services, Irvine, CA ß City of South Pasadena Turning Movement
Counts, South Pasadena, CA
ß City of Glendale Citywide Traffic and
Mobility Study, Glendale, CA
ß CVAG CV Sync Phase I, Coachella Valley, CA
ß City of Corona – Annual Count Program/On-Call
Services, Corona, CA
ß City of Riverside On-Call Traffic Data Collection,
Riverside, CA
ß City of Ontario On-Call Traffic Data Collection
Services, Ontario, CA
Years of Experience: 26
Years with Firm: 26
Professional Affiliations: ITE Member
Education:

B.A., Business Administration/Finance, Cal State
Fullerton, 2007

RFP Professional On-Call Traffic and Transportation Engineering Services: February 2026 City of Diamond Bar
6 2.2 Project Approach and Team Strengths
ADVANTEC understands that rapid mobilization of qualified staff is essential to executing task orders efficiently under the City of Diamond Bar’s On-Call Traffic and Transportation Engineering Services contract. Our approach blends responsive management, streamlined communication, and rigorous quality control to ensure every assignment is delivered on time, within budget, and to the City’s complete satisfaction.

As a trusted partner to the City, the ADVANTEC team brings the capacity, experience, and local presence necessary to meet—and exceed—the City’s expectations. Our proposed team is structured around the following strengths, aligned with the RFP’s Scope of Work categories:
• Local Presence for Responsive Services – Our Diamond Bar office—located adjacent to City Hall—enables immediate coordination and rapid response to task orders. We can provide on-site support for meetings, design reviews, field evaluations, and operational needs within minutes, ensuring seamless collaboration with City staff. • Proven Strategies for On-Call Delivery – ADVANTEC’s as-needed service model relies on proactive communication and a disciplined QA/QC process. Our Project Manager responds to all City inquiries within 24 hours and coordinates deliverables efficiently, reducing turnaround time and minimizing City review efforts.
• Visionary, Multi-Modal, and Sustainable Planning – We apply a Complete Streets and SMART Mobility framework to every assignment, balancing the needs of motorists, bicyclists, pedestrians, and transit users. Our approach integrates sustainability, safety, and equity—supported by VMT analysis, multimodal design, and coordinated transportation planning that align with the City’s long-term vision.
• Record of Successful Traffic and Infrastructure Projects – ADVANTEC has delivered hundreds of projects addressing roadway improvements, signal improvements, construction staging, ITS integration, and adaptive signal systems—consistently meeting schedules, budgets, and stakeholder expectations. Our experience ensures efficient project execution from concept through implementation.
• Strong Leadership and Hands-On Expertise – Led by an experienced Project Director and Project Manager, our leadership team— supported by highly experienced Task Leaders—brings over 300 years of combined experience in civil, traffic, and municipal engineering. This depth allows us to anticipate challenges, provide informed recommendations, and maintain the highest technical and professional standards throughout each task order.

2.3 Subconsultant
Counts Unlimited, Inc. is a southern California-based firm specializing in traffic data collection services for 35 years.

Our experienced full-time staff of 25 employees are extensively trained and tested to uphold the highest standards of accuracy, performance, and customer service. We understand the critical role accurate data plays in transportation planning and are committed to delivering reliable, high-quality results.

3. APPROACH AND METHODOLOGY

3.1 Project Understanding
ADVANTEC will deliver all services through written task orders on time-and-materials basis. Our proven on-call delivery methodology emphasizes rapid mobilization, clear communication, quality assurance, and efficient coordination—ensuring the City receives timely, high-quality results with minimal administrative effort required from staff, as we have demonstrated through the previous on-call contract with Diamond Bar from 2000-2018.

3.2 Overall Task Order Approach
ADVANTEC’s approach to professional consulting services is built on decades of experience providing On-Call Traffic and Transportation Engineering Services to public agencies across Southern California. Drawing from this deep experience, we have refined a streamlined and adaptive methodology that integrates proven engineering principles with innovative, data-driven thinking. This balance of technical rigor and creativity enables us to consistently deliver cost-effective, high-quality results—on schedule and within budget.

Our on-call methodology emphasizes clear communication, collaboration, and accountability at every step.

From task order authorization through final deliverable, the ADVANTEC team ensures that expectations, assumptions, and milestones are fully transparent to both the City and project stakeholders. The adjacent graphic illustrates our step-by-step process once a task order is issued, detailing how we manage assignments efficiently while maintaining flexibility to address project-specific needs.

A key element of our success is continuous, proactive communication with the City’s Project Manager. From task inception through completion, we keep City staff informed of progress, design decisions, and potential issues to support accurate, timely

RFP Professional On-Call Traffic and Transportation Engineering Services: February 2026 City of Diamond Bar
7 decision-making. Recognizing that each project presents unique site conditions, priorities, and challenges, ADVANTEC applies a consistent yet adaptable framework that allows us to tailor our technical approach—ensuring each assignment is handled with precision, responsiveness, and professional excellence, as summarized in the proven five-step project approach summarized below:
1) Understand the City’s Goals – Each project begins with a clear understanding of the City’s objectives, priorities, and expectations.

Our Project Manager and Task Leaders meet with City of Diamond Bar staff to discuss key issues, budgets, schedules, and scope. This early alignment ensures clear direction, identifies critical-path items, and establishes a solid foundation for successful project delivery. 2) Prepare a Detailed Work Plan – ADVANTEC develops a comprehensive work plan defining all tasks, task relationships, schedules, and resource needs. We identify any specialized expertise required to maintain project momentum and create detailed budgets to keep performance on track. The City receives a full Project Management Plan, QA/QC Plan, Resource Plan, and Project Schedule, providing complete transparency and confidence in our management process. 3) Execute with Coordination and Oversight – Upon
notice to proceed, ADVANTEC mobilizes resources
efficiently, coordinating technical work and keeping all stakeholders informed. Our Project Manager continuously monitors progress, schedule, and budget, identifying
potential challenges early. Monthly in-person progress
meetings with City staff and key stakeholders maintain
alignment, while our digital project management platform provides secure access to deliverables, milestone tracking, task lists, and communications—ensuring a collaborative, transparent workflow.
4) Deliver and Close Out – At project completion, Mr. Solis confirms that all final deliverables are submitted in the City’s preferred digital and hard-copy formats. We
expedite the delivery of final documentation and invoices to ensure smooth contract administration and closure.

ADVANTEC’s thorough close-out process reinforces
accountability and leaves the City with complete,
organized project records.
5) Expertise in Managing Concurrent Tasks – ADVANTEC
has a long-standing record of success providing on-call and as-needed services to public agencies throughout
Southern California—including the Cities of Diamond Bar, Chino Hills, Glendale, Culver City, Orange, Corona,
Huntington Beach, Irvine, Mission Viejo, San Clemente,
Anaheim, Newport Beach, Laguna Beach, Claremont,
Pomona, Upland, Long Beach, and Lawndale, as well as the Counties of Riverside and Los Angeles and Caltrans. Our team’s structure and workload management system allow
us to handle multiple concurrent task orders efficiently.

We balance staffing and deliverables weekly and can draw from our broad pool of cross-trained professionals to
ensure timely, high-quality performance on every
assignment.

3.3 Management Approach and Resource
Coordination
ADVANTEC’s management approach is built on decades of
successful partnerships with public agencies across Southern California. Our proven on-call delivery system enables us to consistently complete assignments on or ahead of schedule and within budget. Each engagement begins with a collaborative understanding of the City’s goals and is guided by detailed work planning, clear communication, and responsive oversight.

Our team structure allows us to mobilize multi-disciplinary experts quickly, drawing from ADVANTEC’s in-house specialists and subconsulting partners to match the specific requirements of each task order. The accompanying organizational chart illustrates our

RFP Professional On-Call Traffic and Transportation Engineering Services: February 2026 City of Diamond Bar
8 coordination structure and task order request process, clearly defining responsibilities between the City, Project Director, Project Manager, Task Leaders, and subconsultants.

Understanding the City’s Objectives
Prior to initiating each assignment, our Project Director, Project Manager, and Task Leaders meet with City staff to understand project intent, success criteria, and constraints. We clarify key milestones, identify potential challenges, and assemble the most effective technical team based on the required disciplines. This early alignment ensures that each project begins with shared expectations and a clear path to execution.

Commitment to Provide Resources
ADVANTEC is fully committed to dedicating qualified key and support staff for the duration of this contract. Our senior management team meets weekly to review staffing levels, workloads, and project priorities—ensuring that all deliverables are submitted on or before deadlines. If additional capacity is needed, we draw upon our regional team of 40+ professionals to maintain momentum and uphold quality. This flexible resource management model enables ADVANTEC to respond rapidly to new or concurrent task orders without compromising quality or schedule.

Critical Path Method Scheduling
Our Project Manager maintains a rolling four-week horizon schedule to manage workflow and priorities. The schedule highlights critical path items, decision milestones, and interagency review periods, allowing the City to plan its staff review time efficiently. Any anticipated adjustments or delays are communicated immediately, maintaining full transparency and alignment throughout each task order.

Turnaround Efficiency
ADVANTEC is accustomed to the City’s established review periods—10 working days for initial submittals and 5 working days for resubmittals. Within these timelines, we execute a structured review process:
· Verify document completeness.
· Circulate submittals to the appropriate reviewers.
· Annotate comments directly on plan markups and in a comment matrix. · Consolidate and QA/QC all redlines before returning the review package.

When appropriate, direct designer-reviewer coordination is used to reconcile issues and eliminate unnecessary review cycles—often limiting the process to three checks or fewer. This practical, collaborative approach significantly reduces turnaround time and administrative burden on City staff.

Project Controls
ADVANTEC employs strong project control systems—integrating schedule, budget, and quality management tools to keep task orders on track and within scope.

Schedule Control
We use Microsoft Project to build clear, communicable schedules that align tasks, deadlines, and QA/QC review points. Each schedule:
· Identifies interdependent tasks and agency review windows. · Provides flexibility for quick updates and staff coordination. · Reflects staffing correlations firm-wide.

Critical path items and time-sensitive decisions are tracked proactively. The Project Manager promptly informs the City of any anticipated schedule deviations, allowing the City to allocate review resources efficiently and avoid downstream delays.

Budget Control
Each task order’s scope and work breakdown structure (WBS) forms the basis of our budget, tracked in real time through our internal cost-management system (AJERA). Budgets, expressed in hours and dollars, are continuously monitored by the Project Manager and Task Leaders. We apply earned-value management principles, comparing planned versus actual expenditures to identify variances early. This data is reviewed regularly with task leaders to develop corrective actions and maintain financial control.

A detailed Monthly Progress Report accompanies every task order, summarizing:
· Work completed and in progress.
· Schedule status and upcoming milestones.
· Budget performance and corrective measures (if needed).

Through these practices, ADVANTEC ensures accountability, transparency, and proactive management across all assignments— providing the City of Diamond Bar with confidence that every task order is delivered efficiently and effectively.

RFP Professional On-Call Traffic and Transportation Engineering Services: February 2026 City of Diamond Bar
9 3.4 Quality Assurance/Quality Control (QA/QC) Program ADVANTEC maintains a comprehensive and continuous QA/QC Program designed to ensure every deliverable meets the highest standards of technical accuracy, clarity, and consistency. Our QA/QC process is not confined to milestone reviews—it is embedded in daily workflows, moving seamlessly from desk to desk, discipline to discipline, and consultant to client.

Our Project Manager and Task Leaders oversee daily team activities, guiding staff through consistent review, documentation, and coordination. Mr. Solis provides overall QA/QC oversight for this contract, working closely with ADVANTEC’s senior management to ensure adherence to established procedures and prompt resolution of issues. Dedicated QA/QC contacts will be available at all times to facilitate inquiries regarding project status.

Core QA/QC Policies and Procedures
Policy Approach
Defined Roles and
Responsibilities
Assign clear QA/QC responsibilities for
each staff level; conduct teamwide
QA/QC training and a kickoff meeting
to review procedures and
expectations.

Information
Dissemination and
Document Control
Implement standardized document
flow and control procedures for all
project materials (scope, reports,
invoices, minutes, deliverables).

Internal & External
Coordination
Maintain consistent meeting
documentation using standardized
action logs and issue trackers.

Continuous
“Over-the-Shoulder”
Reviews
Encourage real-time, multi-disciplinary
review during preparation of plans and
reports to identify issues early and
strengthen coordination.

Inter-Disciplinary
Integration
Hold weekly or bi-weekly coordination
meetings and cross-discipline plan
exchanges before all milestone
submittals.

Milestone Quality
Reviews
Use independent reviewers for
checking, revision, and back-checking;
verify compliance with standards,
technical precision, format
consistency, and previous comments.

QC Checklists Require each discipline to apply
specific QC checklists to ensure
completeness, accuracy, and
consistency before submittal.

ADVANTEC’s QA/QC Review Process
Before any deliverable is submitted to the City, it undergoes ADVANTEC’s internal multi-tier quality review. Each stage—technical review, interdisciplinary coordination, and principal sign-off— verifies compliance with project scope, applicable standards, and agency requirements. Only after this internal review is complete is the product submitted for City review. Once City comments are received, they are addressed through the same QA/QC workflow to ensure the final deliverable meets or exceeds expectations.

Collaborative QA/QC with Partner Firms
On many projects, including on-call and as-needed services, ADVANTEC partners with trusted subconsultants who are fully integrated into our QA/QC framework. Every partner firm receives ADVANTEC’s QA/QC policies and assigns its own QA/QC lead to ensure consistency. Together, our team adheres to uniform CAD standards and agency-specific requirements, including General Plans, Circulation Elements, Public Works and Traffic Signal Standards, Communication Standards, and the California Manual on Uniform Traffic Control Devices (MUTCD).

RFP Professional On-Call Traffic and Transportation Engineering Services: February 2026 City of Diamond Bar
10 This rigorous, collaborative structure fosters open communication, accountability, and consistency across all team members. The result is a well-coordinated process that delivers error-free, standards-compliant, and high-quality products—every time.

3.5 Methodology to Perform Scope of Work
ADVANTEC’s methodology integrates technical precision, innovation, and responsiveness to ensure the efficient and high-quality delivery of on-call assignments. Our approach leverages proven engineering practices, advanced analytical tools, and local familiarity to support the City’s operational goals and evolving mobility needs.

A. Traffic Engineering / Studies
ADVANTEC emphasizes a data-driven, context-sensitive approach to traffic evaluation and design—enhancing safety, mobility, and sustainability while minimizing impacts to the surrounding network. Our studies incorporate tools such as Synchro, SimTraffic, and HCS to produce defensible, transparent analyses. Key capabilities include:
· Before- and After-Studies; Traffic Impact and Circulation Analyses · Level of Service (LOS) and Vehicle Miles Traveled (VMT) studies (including CEQA-compliant screening, technical review, and mitigation support)
· Engineering and Speed Surveys using certified radar equipment · School safety assessments and citizen complaint investigations · Signal warrant, communication, and timing analyses
· Parking, bicycle, pedestrian, and equestrian trail studies · Safe Routes to School and Community Outreach
· Conceptual design and lane storage analyses
Our comprehensive experience extends to traffic and operational studies, traffic calming design, safe route to school programs, traffic safety analysis, traffic operations studies, and development planning studies. We also support Active Transportation, ITS, TSMO, Smart City, and Connected/Automated Vehicle (CAV) initiatives and provide technical assistance for grant funding pursuits.

B. Design / PS&E / Plan Checking
ADVANTEC has a long-standing reputation for high-quality, constructible, and compliant transportation design. Our staff have delivered PS&E packages and plan review services for over 500 municipal and Caltrans projects. Core areas of expertise include:
· Signing and Striping Plans, Stage Construction, Traffic Handling · Traffic Signal, Communication, Surveillance, ITS, and Lighting Systems · Dynamic Message Signs and Detection Systems
· Traffic Management Center (TMC) and Intelligent Transportation Systems (ITS) Integration · Construction Management, Contract Administration, Inspection, and Record Drawings Our Plan Checking and PS&E Review process covers all civil, grading, traffic, drainage, and utility disciplines, ensuring conformity with City, County, State, and national standards. We provide well-documented, defensible comments supported by a structured QA/QC process and efficient document control using Microsoft SharePoint.

Plan Check Workflow:

1. Confirm receipt of all required documents

2. Route to appropriate reviewers

3. Markup comments on plans and maintain a comment matrix

4. Compile and QC-check consolidated feedback

5. Return the review package to the City/applicant
ADVANTEC consistently meets the City’s ten-day turnaround for first submittals and five days for resubmittals, drawing from recent success with the Cities of Yorba Linda, Anaheim, and others. When feasible, direct designer-reviewer coordination expedites resolution, often limiting the full review cycle to three total submittals.

C. Construction Support
ADVANTEC provides comprehensive construction-phase engineering services to ensure designs are implemented efficiently, accurately, and within budget. Our capabilities include:
· Hydrology and Hydraulic Studies
· Technical Analysis and Utility Coordination
· Conflict Resolution and Easement Support
· Stakeholder/Agency Communication
· PS&E Preparation and Rapid Emergency Plan Development

RFP Professional On-Call Traffic and Transportation Engineering Services: February 2026 City of Diamond Bar
11 · Construction Administration, Inspection, and Contract Documentation · Change Order Review, Cost Analysis, and Record Drawing Preparation Our experience managing on-call construction support for Anaheim, Los Angeles County, and other jurisdictions ensures seamless communication between design, contractor, and client teams through project completion.

D. Transportation Planning / Coordination
ADVANTEC employs a multi-modal planning framework that aligns transportation infrastructure with community goals, focusing on safety, access, and mobility for all users. Services include:
· Transportation system and corridor planning
· Traffic Signal System Evaluation and Communication Master Plans · Parking, Bicycle, and Pedestrian Studies
· VMT and CMP Compliance for project and regional networks · Coordination on SR-57/SR-60 Corridor, Grade Separations, and CIP Support · Transit integration and interagency coordination with Caltrans, OCTA, Pomona, and Chino Hills Our planners and engineers develop actionable, integrated strategies that help the City balance growth, safety, and mobility within a sustainable multimodal network.

E. Traffic Management Systems / Signal Operations
ADVANTEC is recognized as a regional leader in traffic signal operations and ITS optimization. We analyze network performance to reduce congestion, improve travel times, and enhance safety. Key services include:
· Signal Timing, Coordination, Synchronization, and Fine-Tuning · Signal Operation Implementation and System Optimization · Detector Configuration, MOE Evaluation, and Before/After Studies · Arterial LOS Monitoring and GHG Emissions Analysis
· Integration of Adaptive Control Systems such as TransSuite and SCOOT · Field Troubleshooting, Equipment Setup, and 24/7 Emergency Response We provide operational support for the City’s Traffic Management System (TransSuite) and Adaptive Traffic Control System (SCOOT), as deemed necessary, including field technical support for traffic network communication troubleshooting, equipment set up and configuration, and support for ongoing traffic signal operations, including implementation of signal timing and coordination programs as deemed necessary. Our team has extensive experience with similar systems (e.g., Transparity Adaptive signal system for Culver City, Aries in Chino Hills, Centracs in Irvine and Kinetic Mobility in Glendale), enabling seamless TransSuite/SCOOT integration, optimization, and 24/7 emergency response. Our founding Principal, Leo Lee, has implemented 12 adaptive signal systems including SCOOT and he was part of the selection panel with Diamond Bar and LA County staff to select TransSuite Signal System about 10 years ago, and ADVANTEC is known by LACMTA (Metro) to be a well-versed adaptive traffic signal system engineering consultant.

F. Meetings / Other Services
ADVANTEC supports the City through active participation in City Council, Traffic and Transportation Commission, and community meetings, providing clear visuals, staff reports, and public outreach materials.

Additional services include grant funding support, such as:
· Identification and tracking of funding opportunities
· Preparation and technical review of grant applications · Development of milestones, budgets, and compliance documentation · Coordination of required signatures, certifications, and letters of support · Post-award reporting and accountability assistance
We also provide community outreach and technical communication services, ensuring that projects are well-understood, publicly supported, and strategically positioned for funding and implementation success. .

4. COMPARABLE WORK/ PROJECT EXPERIENCE

4.1 RECENT EXAMPLES OF PROVIDING CONSULTANT SERVICES TO OTHER PUBLIC AGENCIES ADVANTEC has an extensive record of success providing on-call traffic engineering, ITS, and transportation planning services for municipalities across Southern California. Within the past 3 years, our on-call projects with Cities of Anaheim, Upland, and Corona exemplifies our ability to serve as a seamless extension of City staff—delivering responsive, high-quality, and data-driven solutions that enhance safety, efficiency, and mobility. For Anaheim, ADVANTEC provides plan check and traffic control review services,

RFP Professional On-Call Traffic and Transportation Engineering Services: February 2026 City of Diamond Bar
12 supporting daily operations and maintaining coordination with the City’s Traffic Management Center. In Upland, ADVANTEC serves as the City Traffic Engineer, offering on-site support, policy development, and design services that advance local transportation goals.

For Corona, ADVANTEC has implemented citywide signal optimization, ITS upgrades, and pedestrian safety improvements, including design and construction support for solar-powered HAWK signals. Across all these engagements, our team demonstrates technical rigor, proactive communication, and dependable results—qualities that position ADVANTEC as a trusted partner for on-call transportation engineering services. The following table provides a brief description of these 3 On-Call Traffic Engineering Services.

Project Name / Description | ADVANTEC Comparable Project City of Anaheim — On-Call Traffic Control Plan Review and Support Client: City of Anaheim Transportation Department
Date Range: 2015–2025
ADVANTEC has served as an extension of the City of Anaheim staff, providing on-call plan check, traffic control, and operations support services for over eight years. Our role includes comprehensive review of traffic control plans submitted by consultants, contractors, and utility companies citywide to ensure compliance with safety and operational standards.

Using both the WATCH Manual and the California Manual on Uniform Traffic Control Devices (MUTCD), ADVANTEC verifies that all traffic control plans accommodate on-street construction activities while minimizing impacts to motorists, bicyclists, and pedestrians. Our reviews also include coordination with the City’s Traffic Management Center (TMC) and major traffic generators to maintain efficient circulation during construction.

Plan reviews are performed electronically through the City’s e-PlanREVIEW (EPR) platform, enabling efficient workflow, document tracking, and timely response. Our staff also enter review hours and project status updates using Accela, supporting transparent performance tracking and reporting for City management. To ensure responsiveness, ADVANTEC staff maintain an on-site presence one to two times per week, meeting with the City’s Principal Traffic Engineer to discuss the weekly work plan, upcoming submittals, and project deadlines. This ongoing coordination allows the City to manage high-volume plan review workloads effectively, with rapid turnaround times and consistent quality assurance.

Key Features: on-site presence one or two times per week| plan checked on average 5 to 12 plans per week | turnaround within 1 week
Project Reference
City of Anaheim
200 S Anaheim Blvd
Anaheim, CA 92805
Cesar Morales, PE
Principal Traffic Engineer
714-765-5286
[email protected]
Project Name / Description | ADVANTEC Comparable Project City of Upland — On-Call Traffic Engineering Services
Client: City of Upland
Date Range: 2021 – Present
ADVANTEC was selected to provide comprehensive on-call traffic engineering services to the City of Upland, serving as the City’s Traffic Engineer and a trusted technical advisor to staff, elected officials, and the community. Our team delivers responsive, data-driven solutions that enhance safety, mobility, and operational efficiency across the city’s transportation network.

ADVANTEC maintains regular on-site office hours each week, with additional availability as needed, ensuring immediate accessibility and timely coordination with City departments. We actively participate in City Council, Planning Commission, and Public Works Committee meetings, preparing staff reports, technical memoranda, and presentations that clearly convey engineering recommendations to decision-makers and the public.

Key responsibilities include conducting traffic engineering studies such as speed surveys, parking and congestion analyses, truck route evaluations, school zone safety reviews, and Local Road Safety Program assessments. The team also develops traffic warrants and mitigation measures, reviews development proposals and Conditions of Approval, and ensures compliance with City, County, and State standards.

Additional services include:
· Traffic signal design and timing updates
· Striping and signing plan reviews
· Grant writing and funding applications
· Traffic and parking policy development
· Implementation of new parking meter technologies
· Coordination of construction and special event traffic control plans Project Reference
City of Upland
460 N. Euclid Ave.

Upland, CA 91786
Alan French | Principal Engineer
909-931-4235
[email protected]

RFP Professional On-Call Traffic and Transportation Engineering Services: February 2026 City of Diamond Bar
13 · Support to the Police Department on DUI checkpoint layouts, neighborhood safety programs, and school route planning Through this ongoing engagement, ADVANTEC functions as an extension of City staff, providing both on-site augmentation and as-needed design and operational support to deliver efficient, community-focused transportation solutions.

Key Features: On-site staff augmentation | Comprehensive as-needed design and operations | Trusted City Traffic Engineer partnership
Project Name / Description | ADVANTEC Comparable Project City of Corona — On-Call Traffic Engineering Services
Client: City of Corona
Date Range: 2019 – Present
ADVANTEC provides on-call traffic engineering and intelligent transportation system (ITS) services to the City of Corona, supporting a wide range of planning, design, and construction activities. Our work has helped modernize the City’s traffic signal infrastructure, improve corridor operations, and enhance pedestrian and bicyclist safety through innovative design and technology integration.

As part of the Citywide Traffic Signal Optimization Project, ADVANTEC delivered ITS, Traffic, and Public Works services for PS&E preparation and construction support to improve operations at 126 signalized intersections across 12 arterial corridors—including Green River Road, Foothill Parkway, Main Street, Sixth Street, Lincoln Avenue, Ontario Avenue, Magnolia Avenue, McKinley Street, Hidden Valley Parkway, Serfas Club Drive, River Road, and Temescal Canyon Road.

Our scope of work included:

1. Project management, coordination, administration, and stakeholder meetings

2. Field investigations and data collection

3. Assessment of existing conditions and development of preliminary improvement plans

4. Preparation of final PS&E deliverables

5. Ongoing construction support and technical assistance Advantec’s systematic approach combined advanced detection technologies and signal optimization strategies to improve network performance and corridor travel times citywide.

In addition, ADVANTEC led the HAWK Signal Systems Design Project, providing PS&E and construction support for five solar-powered High-Intensity Activated Crosswalk (HAWK) systems in Corona’s downtown area. The project enhanced pedestrian and bicycle safety through installation of masts, beacons, countdown signal heads, audible push buttons (APS), luminaires, ADA-compliant pedestrian ramps, upgraded signal controllers, and new conduit, pull boxes, signage, and striping—all compliant with City of Corona design standards.

ADVANTEC continues to support the City through construction administration, field coordination, and on-call technical support, ensuring high-quality implementation and reliable performance of these safety and mobility improvements.

Key Features: Citywide signal optimization (126 intersections) | Advanced ITS deployment | HAWK safety system design and construction support | Ongoing on-call traffic engineering partnership Project Reference
City of Corona
400 S Vicentia Ave
Corona, CA 92882
Rosie N. Ureno, P.E., T.E.

City Traffic Engineer
951-817-5708
[email protected]

RFP Professional On-Call Traffic and Transportation Engineering Services: February 2026 City of Diamond Bar
14 5. REFERENCES

5.1 REFERENCES
References from similar As-Needed/On-Call Services or projects completed are provided below.

References for ADVANTEC Related Projects and Services
City of Anaheim
200 S Anaheim Blvd
Anaheim, CA 92805
Cesar Morales, PE | Principal Traffic Engineer
(714) 765-5286 | [email protected]
Date Range: 2015 – 2026
On-Call Traffic Engineering Services
ß Signal Timing Upgrades | Traffic Signal Synchronization Plans ß Traffic Control and Safety Analysis | Transportation Analysis ß Intersection Capacity Enhancement Analysis
ß Conceptual / Preliminary Design | Street Improvements ß Signing/Striping Plans | ITS Planning & Design
ß Construction Support
City of Upland
460 N. Euclid Ave.

Upland, CA 91786
Alan French | Principal Engineer
909-931-4235 | [email protected]
Date Range: 2021 – Present
On-Call Traffic Engineering Services
ß Weekly On-Site staff augmentation
ß Traffic Signal Design
ß Signal Timing
ß Signal System Master Plan
City of Corona
400 S. Vicentia Ave.

Corona, CA 92882
Rosie Ureno, PE, TE | City Traffic Engineer
(951) 817-5708 | [email protected]
Date Range: 2019 – Present
On-Call Traffic Engineering Services
ß HAWK Signal and ADA Improvements PS&E
ß Citywide Traffic Signal Optimization Project PS&E

6. AGREEMENT ACCEPTANCE STATEMENT
ADVANTEC accepts all terms and conditions of the Sample Consultant Services Agreement attached in the RFP. We have held on-call contract for over 15 years with City of Diamond Bar previously.

7. STAFF AVAILABILITY STATEMENT
All key staff identified in Section 2 are fully available to provide the requested services to the City of Diamond Bar, with no major conflicting assignments. Each team member’s availability and relevant experience are summarized in the table therein underneath their photo.

Our Diamond Bar office, located adjacent to City Hall, includes more than 20 professional engineers and planners, supported by an additional 20 specialists from our Irvine office. This combined depth and breadth of traffic engineering expertise—among the strongest in Southern California—enables ADVANTEC to deliver highly responsive, reliable, and technically sound service to the City.

21700 Copley Drive Suite 300 | Diamond Bar | CA 91765
T 909.860.6222 www.advantec-usa.com

FEE PROPOSAL
ADVANTEC Consulting
On-Call Traffic and Transportation Engineering Services: City of Diamond Bar Fully Loaded Hourly Billing Rates
Effective July 1, 2026, through June 30, 2029 (Initial Three-Year Contract Term) Classification Rate
Principal 410.00
Senior Project Manager/Senior Engineer VIII 345.00
Senior Project Manager/ Senior Engineer VII 285.00
Project Manager/ Senior Engineer VI 250.00
Project Manager/ Engineer V-3 220.00
Project Manager/ Engineer V-2 200.00
Project Manager/ Engineer V-1 180.00
Associate Engineer IV 160.00
Associate Engineer III 145.00
Assistant Engineer II 135.00
Assistant Engineer I 130.00
Administrative III 160.00
Administrative II 130.00
Administrative I 110.00
Direct Costs
Mileage IRS Standard Mileage Rate (in effect at
time of travel)
In-House Plotting (Mylar) $20.00 per D-size sheet
In-House Plotting (Bond) $10.00 per D-size sheet
Other Direct Costs at Cost + 10% admin

Agenda Item #: 6.21
Meeting Date: June 16, 2026

CITY COUNCIL AGENDA REPORT
TO: Honorable Mayor and Members of the City Council
FROM: Daniel Fox, City Manager
SUBJECT: Consulting Services Agreements for On-Call Geotechnical Engineering Services.

STRATEGIC GOAL: Safe, Sustainable and Healthy Community RECOMMENDATION:

A. Approve, and authorize the City Manager to sign, the Consulting Service Agreement with Willdan Engineering for On-Call Geotechnical Engineering Services through June 30, 2029; B. Approve, and authorize the City Manager to sign, the Consulting Service Agreement with Ninyo & Moore for On-Call Geotechnical Engineering Services through June 30, 2029; and C. Approve, and authorize the City Manager to sign, the Consulting Service Agreement with Converse Consultants, Inc. for On-Call Geotechnical Engineering Services through June 30, 2029.

FINANCIAL IMPACT:

The Fiscal Year 2026/27 Public Works Operating Budget includes $30,000 for on-call geotechnical engineering services. These funds are available for City projects and operations, including geotechnical investigations, soils analysis, compaction testing, and related services. Additional services related to private development project review will be funded through developer fees and deposits and may be authorized up to the not-to-exceed contract amount. An annual not-to-exceed amount of $100,000 for each selected firm is recommended for on-call geotechnical engineering services.

BACKGROUND:

To supplement the City’s professional capabilities, geotechnical engineering services have been utilized by the City on an as-needed basis to ensure efficiency in Public Works Department functions such as land development project processing, Capital Improvement Program (CIP) project planning and design, materials testing, geotechnical report review, and construction inspection services. The current consultant service agreements for geotechnical engineering services are set to expire on June 30, 2026.

There is a broad range of services within the geotechnical engineering industry, such as:
• Geotechnical and engineering geology report reviews

Agenda Item #: 6.21
Meeting Date: June 16, 2026
• Preliminary design review
• Soil sampling
• Material testing
• Land development plan check
• Geology services
• Construction support and inspection
Given the diverse range of services that may be required, it is beneficial for the City to retain qualified on-call geotechnical engineering consultants to provide timely and specialized support for City projects and development review activities.

ANALYSIS:

On March 17, 2026, the City issued a Request for Proposals (RFP) inviting qualified consultants to submit proposals for on-call geotechnical engineering services. A total of ten (10) proposals were received on April 23, 2026, from the following firms:

1. Fenagh LLC

2. Geocon West, Inc.

3. Hushmand Associates, Inc.

4. MTGL, Inc.

5. Ninyo & Moore

6. NOVA Services, Inc.

7. Tetra Tech BAS, Inc.

8. Converse Consultants, Inc.

9. UES Professional Solutions, Inc.

10. Willdan Engineering
City staff independently reviewed and evaluated each proposal based on the criteria identified in the RFP, including staff qualifications, firm qualifications, project approach and methodology, level of effort, ability to meet the City’s schedule and expectations, and relevant references. Subsequently, the fee schedules were compared for sample invoices.

Based on the evaluation results, the Public Works staff evaluation panel unanimously recommends entering into three (3) year agreements with Willdan Engineering, Ninyo & Moore, and Converse Consultants, Inc., with the option to extend the agreements for one (1) additional two (2) year term upon mutual consent of both parties. Any proposed extension would be presented to the City Council for consideration.

Willdan Engineering (Attachment 1 & 2) and Ninyo & Moore (Attachment 3 & 4) are the City’s current on-call geotechnical engineering consultants and have provided responsive and specialized support for land development review, geotechnical report review, grading plan review, slope repair projects, and related engineering services. Their familiarity with the City’s hillside development standards, geologic conditions, and ongoing projects provides valuable continuity and institutional knowledge.

Converse Consultants, Inc. (Attachment 5 & 6) demonstrated strong qualifications and extensive experience providing geotechnical engineering services to public agencies throughout Southern California. The firm offers expertise in land development review, plan check services, construction inspection, materials testing, and design support. Staff determined that Converse Consultants, Inc.’s municipal experience, technical expertise, and competitive fee structure would provide additional capacity and value to the City’s on-call geotechnical engineering program.

Collectively, these firms provide the breadth of expertise necessary to support City projects and development review activities while ensuring timely service, technical consistency, and continuity for ongoing and future assignments.

Agenda Item #: 6.21
Meeting Date: June 16, 2026
Compensation for services will be billed in accordance with each consultant’s approved fee schedule and the specific scope of work authorized by the City. Short form versions of each firm's proposal is provided for reference.

LEGAL REVIEW:

The City Attorney has reviewed and approved the Agreements as to form.

PREPARED BY:

Vivian Chen, Associate Engineer, Public Works
ATTACHMENTS:

1. Agreement (Willdan)

2. Proposal (Willdan)

3. Agreement (Ninyo & Moore)

4. Proposal (Ninyo & Moore)

5. Agreement (Converse Consultants)

6. Proposal (Converse Consultants)

1 CONSULTANT SERVICES AGREEMENT
THIS AGREEMENT (the "Agreement") is made as of June 16, 2026 by and between the City of Diamond Bar, a municipal corporation ("City") and Willdan Engineering, Inc., a California corporation ("Consultant").

1. Consultant's Services.

Subject to the terms and conditions set forth in this Agreement Consultant shall provide to the reasonable satisfaction of the City the Traffic and Transportation Engineering services set forth in the attached Exhibit "A", which is incorporated herein by this reference. As a material inducement to the City to enter into this Agreement, Consultant represents and warrants that it has thoroughly investigated the work and fully understands the difficulties and restrictions in performing the work. Consultant represents that it is fully qualified to perform such consulting services by virtue of its experience and the training, education and expertise of its principals and employees.

Vivian Chen, Associate Engineer (herein referred to as the “City’s Project Manager”), shall be the person to whom the Consultant will report for the performance of services hereunder. It is understood that Consultant shall coordinate its services hereunder with the City’s Project Manager to the extent required by the City’s Project Manager, and that all performances required hereunder by Consultant shall be performed to the satisfaction of the City’s Project Manager and the City Manager

2. Term of Agreement. This Agreement shall take effect July 1, 2026, and shall continue until June 30, 2029 unless earlier terminated pursuant to the provisions herein.

The City shall have the option to extend this Agreement for one (1) additional two (2) year term, subject to the same terms and conditions contained herein, by giving Consultant written notice of the exercise of this option at least thirty (30) days prior to the expiration of the initial Term. In the event the City exercises its option to extend the Term, Consultant's compensation shall be subject to an adjustment upon the effective date of extension as follows:

Consultant’s rates shall be fixed during the initial Term of this Agreement. Rate increases in compensation will be only considered in the event the City exercises its option to extend the Agreement and apply as of July 1, 2029. Any rate increase will be negotiated between the City and the Consultant, but in no event shall the increase exceed the amount that the Consumer Price Index ("CPI") for the Los AngelesAnaheim-Riverside metropolitan area for the month immediately preceding the Adjustment Date (the "Index Month") as reported by the Bureau of Labor Statistics of the United States Department of Labor, has increased over the CPI for the month one year prior to the Index Month.

2 3. Compensation. City agrees to compensate Consultant for each service which Consultant performs to the satisfaction of City in compliance with the scope of services set forth in Exhibit "A". Payment will be made only after submission of proper invoices in the form specified by City. Total payment to Consultant pursuant to this Agreement shall not exceed One Hundred Thousand Dollars and Zero Cents ($100,000.00) per Fiscal Year without the prior written consent of the City. The above not-to-exceed amount shall include all costs, including but not limited to, all clerical, administrative, overhead, telephone, travel and all related expenses.

4. Payment.

A. Consultant shall submit to City an invoice for the services completed, authorized expenses and authorized extra work actually performed or incurred.

B. All such invoices shall state the basis for the amount invoiced, including services completed, the number of hours spent and any extra work performed.

C. Payment will be made only after submission of proper invoices.

D. City will pay Consultant the amount property invoiced within 35 days of receipt.

5. Change Orders. No payment for extra services caused by a change in the scope or complexity of work, or for any other reason, shall be made unless and until such extra services and a price therefore have been previously authorized in writing and approved by the City Manager or his designee as an amendment to this Agreement.

The amendment shall set forth the changes of work, extension of time, if any, and adjustment of the fee to be paid by City to Consultant.

6. Priority of Documents. In the event of any inconsistency between the provisions of this Agreement and any attached exhibits, the provisions of this Agreement shall control.

7. Status as Independent Contractor.

A. Consultant is, and shall at all times remain as to City, a wholly independent contractor. Consultant shall have no power to incur any debt, obligation, or liability on behalf of City or otherwise act on behalf of City as an agent, except as specifically provided herein. Neither City nor any of its agents shall have control over the conduct of Consultant or any of Consultant's employees, except as set forth in this Agreement. Consultant shall not, at any time, or in any manner, represent that it or any of its agents or employees are in any manner employees of City.

B. Consultant agrees to pay all required taxes on amounts paid to Consultant under this Agreement, and to indemnify and hold City harmless from any and all taxes, assessments, penalties, and interest asserted against City by reason of the independent contractor relationship created by this Agreement. In the event that City is

3 audited by any Federal or State agency regarding the independent contractor status of Consultant and the audit in any way fails to sustain the validity of a wholly independent contractor relationship between City and Consultant, then Consultant agrees to reimburse City for all costs, including accounting and attorney's fees, arising out of such audit and any appeals relating thereto.

C. Consultant shall fully comply with Workers' Compensation laws regarding Consultant and Consultant's employees. Consultant further agrees to indemnify and hold City harmless from any failure of Consultant to comply with applicable Worker's Compensation laws.

D. Consultant shall, at Consultant’s sole cost and expense, fully secure and comply with all federal, state and local governmental permit or licensing requirements, including but not limited to the City of Diamond Bar, South Coast Air Quality Management District, and California Air Resources Board.

E. In addition to any other remedies it may have, City shall have the right to offset against the amount of any fees due to Consultant under this Agreement any amount due to City from Consultant as a result of Consultant's failure to promptly pay to City any reimbursement or indemnification required by this Agreement or for any amount or penalty levied against the City for Consultant’s failure to comply with this Section.

8. Standard of Performance. Consultant shall perform all work at the standard of care and skill ordinarily exercised by members of the profession under similar conditions and represents that it and any subcontractors it may engage, possess any and all licenses which are required to perform the work contemplated by this Agreement and shall maintain all appropriate licenses during the performance of the work.

9. Indemnification.

To the maximum extent permitted by Civil Code section2782.8, Consultant shall indemnify, defend with counsel approved by City, and hold harmless City, its officers, officials, employees and volunteers ("Indemnitees") from and against all liability, loss, damage, expense, cost (including without limitation reasonable attorneys' fees, expert fees and all other costs and fees of litigation) of every nature arising out of or in connection with:
(1) Any and all claims under Workers’ Compensation Act and other employee benefit acts with respect to Consultant’s employees or Consultant’s contractor’s employees arising out of Consultant’s work under this Agreement; and (2) Any and all claims arising out of Consultant's performance of work hereunder or its failure to comply with any of its obligations contained in this Agreement, regardless of City’s passive negligence, but excepting such loss or damage which is caused by the sole active negligence or willful misconduct of the City. Should City in its

4 sole discretion find Consultant’s legal counsel unacceptable, then Consultant shall reimburse the City its costs of defense, including without limitation reasonable attorneys' fees, expert fees and all other costs and fees of litigation. The Consultant shall promptly pay any final judgment rendered against the Indemnitees. It is expressly understood and agreed that the foregoing provisions are intended to be as broad and inclusive as is permitted by the law of the State of California and will survive termination of this Agreement. Except for the Indemnitees, this Agreement shall not be construed to extend to any third-party indemnification rights of any kind. (3) Any and all claims for loss, injury to or death of persons or damage to property caused by the negligent professional act or omission in the performance of professional services pursuant to this Agreement.
(4) The Consultant’s obligations to indemnify, defend and hold harmless the City shall survive termination of this Agreement.

10. Insurance.

A. Consultant shall at all times during the term of this Agreement carry, maintain, and keep in full force and effect, with an insurance company authorized to do business in the State of California and approved by the City the following insurance:
(1) A policy or policies of broad-form comprehensive general liability insurance written on an occurrence basis with minimum limits of $1,000,000.00 combined single limit coverage against any injury, death, loss or damage as a result of wrongful or negligent acts by Consultant, its officers, employees, agents, and independent contractors in performance of services under this Agreement; (2) Property damage insurance with a minimum limit of $500,000.00 per occurrence;
(3) Automotive liability insurance written on an occurrence basis covering all owned, non-owned and hired automobiles, with minimum combined single limits coverage of $1,000,000.00;
(4) Worker's Compensation insurance when required by law, with a minimum limit of $500,000.00 or the amount required by law, whichever is greater; and
(5) Professional liability insurance covering errors and omissions arising out of the performance of this Agreement with a combined single limit of $1,000,000. If such insurance is on a claims made basis, Consultant agrees to keep such insurance in full force and effect for at least five years after termination or date of completion of this Agreement.

5 B. The City, its officers, employees, agents, and volunteers shall be named as additional insureds on the policies as to comprehensive general liability, property damage, and automotive liability. The policies as to comprehensive general liability, property damage, and automobile liability shall provide that they are primary, and that any insurance maintained by the City shall be excess insurance only.

C. All insurance policies shall provide that the insurance coverage shall not be non-renewed, canceled, reduced, or otherwise modified (except through the addition of additional insureds to the policy) by the insurance carrier without the insurance carrier giving City at least ten (10) days prior written notice thereof. Consultant agrees that it will not cancel, reduce or otherwise modify the insurance coverage and in the event of any of the same by the insurer to immediately notify the City.

D. All policies of insurance shall cover the obligations of Consultant pursuant to the terms of this Agreement and shall be issued by an insurance company which is authorized to do business in the State of California or which is approved in writing by the City; and shall be placed have a current A.M. Best's rating of no less than A-, VII. In the case of professional liability insurance, such coverage shall be issued by companies either licensed or admitted to conduct business in the State of California as long as such insurers possess the aforementioned Best’s rating.

E. Consultant shall submit to City (1) insurance certificates indicating compliance with the minimum insurance requirements above, and (2) insurance policy endorsements or a copy of the insurance policy evidencing the additional insured requirements in this Agreement, in a form acceptable to the City.

F. Self-Insured Retention/Deductibles. All policies required by this Agreement shall allow City, as additional insured, to satisfy the self-insured retention (“SIR”) and/or deductible of the policy in lieu of the Consultant (as the named insured) should Consultant fail to pay the SIR or deductible requirements. The amount of the SIR or deductible shall be subject to the approval of the City. Consultant understands and agrees that satisfaction of this requirement is an express condition precedent to the effectiveness of this Agreement. Failure by Consultant as primary insured to pay its SIR or deductible constitutes a material breach of this Agreement. Should City pay the SIR or deductible on Consultant’s due to such failure in order to secure defense and indemnification as an additional insured under the policy, City may include such amounts as damages in any action against Consultant for breach of this Agreement in addition to any other damages incurred by City due to the breach.

G. Subrogation. With respect to any Workers' Compensation Insurance or Employer's Liability Insurance, the insurer shall waive all rights of subrogation and contribution it may have against the Indemnitees.

H. Failure to Maintain Insurance. If Consultant fails to keep the insurance required under this Agreement in full force and effect, City may take out the necessary insurance and any premiums paid, plus 10% administrative overhead, shall be paid by Consultant, which amounts may be deducted from any payments due Consultant.

6 I. Consultant shall include all subcontractors, if any, as insureds under its policies or shall furnish separate certificates and endorsements for each subcontractor to the City for review and approval. All insurance for subcontractors shall be subject to all of the requirements stated herein.

11. Confidentiality. Consultant in the course of its duties may have access to confidential data of City, private individuals, or employees of the City. Consultant covenants that all data, documents, discussion, or other information developed or received by Consultant or provided for performance of this Agreement are deemed confidential and shall not be disclosed by Consultant without written authorization by City. City shall grant such authorization if disclosure is required by law. All City data shall be returned to City upon the termination of this Agreement. Consultant's covenant under this section shall survive the termination of this Agreement. Notwithstanding the foregoing, to the extent Consultant prepares reports of a proprietary nature specifically for and in connection with certain projects, the City shall not, except with Consultant's prior written consent, use the same for other unrelated projects.

12. Ownership of Materials. Except as specifically provided in this Agreement, all materials provided by Consultant in the performance of this Agreement shall be and remain the property of City without restriction or limitation upon its use or dissemination by City. Consultant may, however, make and retain such copies of said documents and materials as Consultant may desire.

13. Maintenance and Inspection of Records. In accordance with generally accepted accounting principles, Consultant and its subcontractors shall maintain reasonably full and complete books, documents, papers, accounting records, and other information (collectively, the “records”) pertaining to the costs of and completion of services performed under this Agreement. The City and any of their authorized representatives shall have access to and the right to audit and reproduce any of Consultant's records regarding the services provided under this Agreement. Consultant shall maintain all such records for a period of at least three (3) years after termination or completion of this Agreement. Consultant agrees to make available all such records for inspection or audit at its offices during normal business hours and upon three (3) days' notice from the City, and copies thereof shall be furnished if requested.

14. Conflict of Interest.

A. Consultant covenants that it presently has no interest and shall not acquire any interest, direct or indirect, which may be affected by the services to be performed by Consultant under this Agreement, or which would conflict in any manner with the performance of its services hereunder. Consultant further covenants that, in performance of this Agreement, no person having any such interest shall be employed by it. Furthermore, Consultant shall avoid the appearance of having any interest which would conflict in any manner with the performance of its services pursuant to this Agreement.

7 B. Consultant covenants not to give or receive any compensation, monetary or otherwise, to or from the ultimate vendor(s) of hardware or software to City as a result of the performance of this Agreement. Consultant's covenant under this section shall survive the termination of this Agreement.

15. Termination. The City may terminate this Agreement with or without cause upon thirty (30) days' written notice to Consultant. The effective date of termination shall be upon the date specified in the notice of termination, or, in the event no date is specified, upon the thirtieth (30th) day following delivery of the notice. In the event of such termination, City agrees to pay Consultant for services satisfactorily rendered prior to the effective date of termination. Immediately upon receiving written notice of termination, Consultant shall discontinue performing services, unless the notice provides otherwise, except those services reasonably necessary to effectuate the termination. The City shall be not liable for any claim of lost profits.

16. Personnel/Designated Person. Consultant represents that it has, or will secure at its own expense, all personnel required to perform the services under this Agreement. All of the services required under this Agreement will be performed by Consultant or under it supervision, and all personnel engaged in the work shall be qualified to perform such services. Except as otherwise authorized by the City’s Project Manager, Consultant reserves the right to determine the assignment of its own employees to the performance of Consultant’s services under this Agreement, but City reserves the right in its sole discretion to required Consultant to exclude any employee from performing services on City’s premises.

17. Non-Discrimination and Equal Employment Opportunity.

A. Consultant shall not discriminate as to race, color, creed, religion, sex, marital status, national origin, ancestry, age, physical or mental handicap, medical condition, or sexual orientation, in the performance of its services and duties pursuant to this Agreement, and will comply with all rules and regulations of City relating thereto.

Such nondiscrimination shall include but not be limited to the following: employment, upgrading, demotion, transfers, recruitment or recruitment advertising; layoff or termination; rates of pay or other forms of compensation; and selection for training, including apprenticeship.

B. Consultant will, in all solicitations or advertisements for employees placed by or on behalf of Consultant state either that it is an equal opportunity employer or that all qualified applicants will receive consideration for employment without regard to race, color, creed, religion, sex, marital status, national origin, ancestry, age, physical or mental handicap, medical condition, or sexual orientation.

C. Consultant will cause the foregoing provisions to be inserted in all subcontracts for any work covered by this Agreement except contracts or subcontracts for standard commercial supplies or raw materials.

18. Reserved

8 19. Time Is of the Essence. Time is of the essence in this Agreement.

Consultant shall do all things necessary and incidental to the prosecution of Consultant's work.

20. Delays and Extensions of Time. Consultant's sole remedy for delays outside its control shall be an extension of time. No matter what the cause of the delay, Consultant must document any delay and request an extension of time in writing at the time of the delay to the satisfaction of City. Any extensions granted shall be limited to the length of the delay outside Consultant’s control. If Consultant believes that delays caused by the City will cause it to incur additional costs, it must specify, in writing, why the delay has caused additional costs to be incurred and the exact amount of such cost within 10 days of the time the delay occurs. No additional costs can be paid that exceed the not to exceed amount absent a written amendment to this Agreement. In no event shall the Consultant be entitled to any claim for lost profits due to any delay, whether caused by the City or due to some other cause.

21. Assignment. Consultant shall not assign or transfer any interest in this Agreement nor the performance of any of Consultant's obligations hereunder, without the prior written consent of City, and any attempt by Consultant to so assign this Agreement or any rights, duties, or obligations arising hereunder shall be void and of no effect.

22. Compliance with Laws. Consultant shall comply with all applicable laws, ordinances, codes and regulations of the federal, state, and local governments.

23. Non-Waiver of Terms, Rights and Remedies. Waiver by either party of any one or more of the conditions of performance under this Agreement shall not be a waiver of any other condition of performance under this Agreement. In no event shall the making by City of any payment to Consultant constitute or be construed as a waiver by City of any breach of covenant, or any default which may then exist on the part of Consultant, and the making of any such payment by City shall in no way impair or prejudice any right or remedy available to City with regard to such breach or default.

24. Attorney’s Fees. In the event that either party to this Agreement shall commence any legal or equitable action or proceeding to enforce interpret the provisions of this Agreement, the prevailing party in such action or proceeding shall be entitled to recover its costs of suit, including reasonable attorney’s fees and costs, including costs of expert witnesses and consultants.

25. Mediation. Any dispute or controversy arising under this Agreement, or in connection with any of the terms and conditions hereof, which cannot be resolved by the parties, may be referred by the parties hereto for mediation. A third party, neutral mediation service shall be selected, as agreed upon by the parties and the costs and expenses thereof shall be borne equally by the parties hereto. The parties agree to utilize their good faith efforts to resolve any such dispute or controversy so submitted to mediation. It is specifically understood and agreed by the parties hereto that mutual

9 good faith efforts to resolve the same any dispute or controversy as provided herein, shall be a condition precedent to the institution of any action or proceeding, whether at law or in equity with respect to any such dispute or controversy.

26. Notices. Any notices, bills, invoices, or reports required by this Agreement shall be deemed received on (a) the day of delivery if delivered by hand during regular business hours or by facsimile before or during regular business hours; or (b) on the third business day following deposit in the United States mail, postage prepaid, to the addresses heretofore set forth in the Agreement, or to such other addresses as the parties may, from time to time, designate in writing pursuant to the provisions of this section.
“CONSULTANT” “CITY”
Willdan Engineering, Inc. City of Diamond Bar
1515 South Sunkist Street, Suite E 21810 Copley Drive
Anaheim, CA 92806 Diamond Bar, CA 91765-4178
Attn.: Ross Khiabani, PE, GE Attn.: Daniel Fox, City Manager Phone: 714-634-3318 Phone: (909) 839-7010
E-mail: [email protected] E-mail: [email protected]

27. Governing Law. This Agreement shall be interpreted, construed and enforced in accordance with the laws of the State of California.

28. Counterparts. This Agreement may be executed in any number of counterparts, each of which shall be deemed to be the original, and all of which together shall constitute one and the same instrument.

29. Entire Agreement. This Agreement, and any other documents incorporated herein by reference, represent the entire and integrated agreement between Consultant and City. This Agreement supersedes all prior oral or written negotiations, representations or agreements. This Agreement may not be amended, nor any provision or breach hereof waived, except in a writing signed by the parties which expressly refers to this Agreement. Amendments on behalf of the City will only be valid if signed by a person duly authorized to do so under the City's Purchasing Ordinance.

IN WITNESS of this Agreement, the parties have executed this Agreement as of the date first written above.

10 "Consultant" "City"

CITY OF DIAMOND BAR
By: ______ By:

Printed Name________________ Dan Fox, City Manager
Title: ___________________________
By: ATTEST:

Printed Name:

Title:

Kristina Santana, City Clerk
Approved as to form:

By:

Omar Sandoval, City Attorney
*NOTE:If Consultant is a corporation, the City requires the following signature(s):
-- (1) the Chairman of the Board, the President or a Vice-President, AND (2) the Secretary, the Chief Financial Officer, the Treasurer, an Assistant Secretary or an Assistant Treasurer. If only one corporate officer exists or one corporate officer holds more than one corporate office, please so indicate. OR
-- The corporate officer named in a corporate resolution as authorized to enter into this Agreement. A copy of the corporate resolution, certified by the Secretary close in time to the execution of the Agreement, must be provided to the City.

By:

Printed Name: Kate _Nguyen___ _
Title: _Secretary______ _

April 23, 2026
City of Diamond Bar
On-Call Geotechnical
Engineering Services
Proposal for

DIRECT CONTACT
Ross Khiabani, PE, GE
Project Manager
657.221.2715
[email protected]

562.908.6200 | 800.499.4484 | fax: 562.695.2120 | 13191 Crossroads Parkway North, Suite 405 Industry, CA 91746 | www.willdan.com Cover Letter
April 23, 2026
Attn: Hal Ghafari, P.E., Public Works Manager/Assistant City Engineer City of Diamond Bar
Submitted via PlanetBids
Subject: Proposal for On-Call Geotechnical Engineering Services The City of Diamond Bar is seeking proposals from qualified Geotechnical Engineering firms to provide on-call geotechnical and soils engineering services.

Willdan Engineering (Willdan) brings the technical expertise, staffing depth, and local presence necessary to support the City’s projects efficiently and effectively.

Strong Project Manager and Team. Our team is led by Ross Khiabani, PE, GE, who brings more than 50 years of experience in geotechnical engineering, materials testing, and inspection services for schools, commercial and industrial developments, public works, and transportation projects. He will be supported by a highly qualified team, including Chris Baca, RCI, Director of Construction Management Services; Joe Ritchey, Materials Testing and Inspection Lead; Alireza Kazem, PhD, EIT, Geotechnical Engineer; Joseph Barr, PG, PE, Engineering Geology Lead; and Ramon Calbay, Laboratory Testing Lead.

Together, this team provides comprehensive technical oversight and quality assurance across all assignments.

Full-Service Testing Facilities: A key strength of our team is our full-service soils and materials testing laboratory located in Anaheim, approximately 25 minutes from Diamond Bar City Hall. Our laboratory is certified and/or accredited by the Division of the State Architect (DSA), the City of Los Angeles, the AASHTO Materials Reference Laboratory (AMRL), and Caltrans. We are highly experienced in Caltrans requirements and have successfully completed more than 100 audits. This local, fully accredited facility enables us to provide responsive service, reliable testing, and timely reporting.

To further enhance our service capabilities, we have partnered with three specialized subconsultants: Build with PMC (pavement coring and traffic control), Geo-Logic Associates (R-value testing), and Converse Consultants (Environmental Engineering). These partnerships ensure the City receives comprehensive and seamless support across all required disciplines.

City of Diamond Bar Long-Term Partnership. Willdan has maintained a continuous geotechnical services relationship with the City of Diamond Bar since 2003, providing specialized expertise in the City's challenging hillside terrain and complex geological conditions. The firm's services to Diamond Bar have encompassed geotechnical and materials testing and inspection services for street rehabilitation projects, including observation and testing of mill and overlay operations, reconstruction of pavement sections including aggregate base and asphalt concrete layers, and cold central plant recycling with overlay. Willdan has served as the City's Geotechnical Reviewer for the Public Works Department, reviewing developers' submitted soils reports for all new development projects to ensure compliance with the City's hillside development standards.

Through decades of serving public agencies, we understand the coordination, documentation, quality control, and accountability required for public-sector projects. We are committed to helping the City complete projects on time and within budget while maintaining the highest standards of safety and technical excellence. Willdan would be proud to serve as a proactive and dependable member of the City’s consultant team.

Contact Person for Inquiries Regarding Proposal Representative Authorized to Bind the Company Ross Khiabani, PE, GE
Project Manager
1515 South Sunkist Street, Street E
Anaheim, CA 92806
(657) 221-2715
[email protected]
Chris Baca, RCI
Director of Construction Management Services
13191 Crossroads Parkway North, Suite 405
Industry, CA 91746
(562) 364-8198
[email protected]

We thank the City of Diamond Bar for the opportunity to submit our qualifications for on-call materials testing, inspection services, and environmental engineering. We look forward to continuing working with the City and forging a successful partnership. If you have any questions about our submittal, please contact our proposed Project Manager, Ross Khiabani, PE, GE, at the information above.

Respectfully submitted,

WILLDAN ENGINEERING
Chris Baca, RCI
Director of Construction Management Services

Proposal for
On-Call Geotechnical Engineering Services 1

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On-Call Geotechnical Engineering Services 3

1. PROJECT TEAM
Key personnel will be available to the extent proposed for the duration of the services and an acknowledgement that no person designated as key personnel shall be removed or replaced without the prior written concurrence of the City. Willdan has provided brief resumes for key personnel in the Appendix.

Name Role
Key Personnel
Chris Baca, RCI Principal-in-Charge (Director of Construction Services) Ross Khiabani, PE, GE Senior Project Engineer
Alireza Kazem, PhD, EIT Project Manager, Field Geotechnical Engineering Lead Joe Ritchey Materials Testing and Inspection Lead
Ramon Calbay Laboratory Testing Manager Lead
Organizational Chart
Subcontractors
Although Willdan can provide most of the requested services in-house, we have teamed up with three subcontractors. These additional team members will act on behalf of Willdan to provide the following services:

Services to be Provided Subconsultant
Pavement Coring & Traffic Control PMC, Inc.

Laboratory Soil Testing – R value Test Geo-Logic Associates Environmental Engineering and Science Services Converse Consultants

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Anticipated Subcontractors
Build with PMC (PMC) is an industrial construction company founded in June 1980. Its quality workmanship provides customers with a timely, cost-effective, safe, and clean job. PMC performs the work professionally, from conception through project completion, doing all that is possible to make each project run smoothly for our customers. PMC specializes in Asphalt and Concrete Corroding, including temporary traffic control for fieldwork. PMC will provide Pavement Coring & Traffic Control for Willdan on this on-call contract.

Geo-Logic Associates (GLA) is an employee-owned multidisciplinary civil, environmental, geologic, and geotechnical consulting firm established in 1991.

GLA employs over 250 highly experienced professionals located throughout 26 U.S. office locations as well as an office in Lima, Peru. GLA is a group of over 250 well-qualified and seasoned professionals providing a full range of services from planning to design and construction. GLA is committed to quality service at competitive prices and is known for providing clients with creative, cost-saving solutions to address their most complex engineering and construction challenges. GLA's team members take pride in providing a responsive, high-quality work product and have proven their innovative ability to utilize problem-solving techniques to solve even the most complex issues our clients face successfully. Built with over 26 years of experience, GLA has a strong reputation for performing project work on schedule and under budget, as evidenced by the high rate of repeat and direct-assign work. Geologic will perform R-value testing for Willdan on this on-call contract.

Converse Consultants provide Phase I and II Environmental Site Assessments; Preliminary Endangerment Assessments; Asbestos, Leadbase Paint, and Mold surveys and monitoring; Third Party Reviews and Consultation; Project Management; and Hazardous Material Audits, SCAQMD Permitting, Supervising Hazardous Material Pickups, and Maintaining Hazardous Materials Databases. Additional services include Remedial Action Workplans (as well as overseeing the implementation of those workplans); the development and implementation of Stormwater Pollution Prevention Plans and related documents; and field experience relating to environmental investigations and remediation includes the collection of soil, soil vapor, ambient air, and groundwater samples, installation of groundwater and soil vapor monitoring wells, remedial extraction and injection wells, preparation of boring logs in accordance with Unified Soil Classification System methods, waste stream management, and evaluation of Best Management Practices (BMPs) at construction sites.

Converse Consultants
717 S. Myrtle Ave.

Monrovia, CA 91016
Mr. Norman S. Eke
(626) 807-3407
[email protected]
Lam Dang
(714) 630-5855
[email protected]
Robert Kelley
(562) 755-1634
[email protected]

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On-Call Geotechnical Engineering Services 5

2. FIRM’S EXPERIENCE/REFERENCES
Overall Qualifications
Willdan Engineering (Willdan), a California corporation since 1964, is a subsidiary of Willdan Group, Inc., a publicly traded Delaware corporation. On-call/As-needed engineering services are Willdan's foundation, and our staff includes former public agency or contract agency staff. Willdan has extensive experience providing a complete range of engineering services to local agencies on an as-needed and project-specific basis. Our capabilities encompass streets and highways, drainage, water/wastewater, signals, traffic programs, bridges and structures, landscaping, and mapping. We provide services in all phases of project development, including site analysis and conceptual development, preliminary and final design, and construction management and inspection. Our services involve environmental planning, facility financing, and state-of-the-art computer-aided design. We have direct experience with county, state, and federal processes, regulations, and requirements.

Throughout our 62-year history, Willdan has been a consistent industry leader providing all aspects of municipal, infrastructure, and transportation engineering; program management; financial consulting; municipal planning; environmental; energy-related services, along with a full complement of related disciplines. Dedicated to providing public agencies with reliable, quality, and cost-effective services, Willdan merges sound solutions with a solid respect for the fiscal responsibility faced by local agencies and the concerns of affected communities. This approach has proven responsive to the most challenging budget, schedule, and aesthetic requirements. It is a contributing factor to our industry reputation and our company growth. Willdan addresses the varied demographics of our public agency clients through focused, specialized services offering solutions tailored to the unique goals and visions of each agency. Willdan's corporate-wide staffing resources have grown from 637 in 2014 to over 1,800 employees in 50+ offices nationwide. Southern California offices include our corporate headquarters in Anaheim, a geotechnical lab and office also in Anaheim, as well as offices in Ventura, Industry, Los Angeles, Riverside, and San Bernardino.

Geotechnical & Materials Testing Services
Willdan has a resolute, full-time staff of geotechnical engineers, geologists, and field and laboratory technicians.

We also have a pool of qualified independent construction specialty inspectors and technicians. Our staff has experience throughout the San Bernardino, Los Angeles, Orange, Riverside, and Ventura counties, and is particularly familiar with local geologic and geotechnical conditions. We are confident we can provide all the services listed in your RFQ.

Willdan maintains a full-service soil and material testing laboratory. Our laboratory is certified by the California Department of Transportation and the City of Los Angeles. We also participate in the Caltrans Proficiency Programs.

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On-Call Geotechnical Engineering Services 9
Responsive Inspection and Testing Services
Willdan maintains the organizational capacity and field personnel availability to provide responsive inspection services within short notice timeframes. The firm's local presence in Orange and Los Angeles Counties enables rapid deployment of certified inspectors and testing technicians to project sites. Willdan coordinates inspection schedules with contractors and public works staff to ensure timely presence for critical construction activities including foundation excavations, compaction operations, concrete placements, and asphalt paving. The firm's inspection and testing services support both private development projects requiring permit compliance and public capital improvement projects requiring construction quality assurance.

Additional Los Angeles County Experience
Willdan provides comprehensive geotechnical and materials testing services to numerous Los Angeles County municipalities including the Cities of Downey, La Puente, Paramount, Inglewood, Lakewood, Rosemead, Rolling Hills, Rolling Hills Estates, and Rancho Palos Verdes. This extensive regional experience provides Willdan's team with in-depth familiarity with the geologic and geotechnical conditions characteristic of the Los Angeles Basin and surrounding hillside areas. Willdan's personnel maintain working relationships with local building officials, public works departments, and reviewing agencies throughout the region, facilitating efficient project coordination and regulatory compliance.

Willdan Office: 13191 Crossroads Parkway North, Suite 405 Industry, CA 91746 Phone: (562) 908-6200 The Industry office serves as Willdan's primary location for Los Angeles County geotechnical services, located in Los Angeles County adjacent to Diamond Bar.

3. PROJECT UNDERSTANDING
Diamond Bar’s Geotechnical Setting
Willdan understands that Diamond Bar’s hillside terrain, expansive soils, groundwater conditions, and variable subsurface profiles create recurring challenges for both public infrastructure and private development. These conditions affect slope stability, foundations, utilities, and pavement performance, requiring responsive geotechnical review, field observation, and practical recommendations. Our team has extensive experience throughout Los Angeles County delivering subsurface exploration, testing, engineering analysis, and construction support for these same conditions.

Approach to Land Development Services
Willdan will provide a coordinated approach to pre-entitlement review, permitting, final plan review, and construction inspection that supports City timelines and code compliance. We will identify geotechnical constraints early, review grading and foundation documents for consistency with City standards and code requirements, and provide clear written comments to help applicants resolve issues efficiently. During construction, we will perform grading, compaction, foundation, retaining wall, and drainage observation while coordinating closely with City staff and project teams.

Approach to Public Infrastructure Services
For public projects, Willdan will deliver geotechnical investigations, design support, construction inspection, and infrastructure evaluation to support the City’s capital and maintenance needs. Our work will include subsurface exploration, laboratory testing, pavement and foundation recommendations, slope and retaining wall analysis, and stormwater infiltration assessments as needed. We will also provide inspection and monitoring services for earthwork, paving, structures, slopes, and distressed infrastructure to help the City protect long-term asset performance.

Anticipated Challenges and Mitigation
Willdan recognizes that Diamond Bar’s topography and subsurface variability require quick response, sound

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On-Call Geotechnical Engineering Services 10
judgment, and consistent field oversight. Our local office supports timely mobilization for urgent reviews, inspections, and emergency conditions. To address expansive soils, groundwater, and regulatory requirements, we will apply rigorous testing, construction observation, and code-based technical review, while maintaining qualified geotechnical and engineering geology staff available for both routine assignments and emergency response.

Integration with the City
Willdan will serve as an extension of the City’s Public Works Department by providing specialized geotechnical expertise through clear communication, defined roles, and dependable turnaround. Our Principal-in-Charge, Project Manager, and licensed Geotechnical Engineer will coordinate task assignments, quality control, and City communication to ensure consistent service delivery. By using the City’s electronic review processes, attending meetings as requested, and maintaining direct points of contact for routine and urgent matters, we will provide responsive support for development review, public projects, and emergency conditions.

Quality Assurance/Control
Willdan prioritizes quality control and prepares a project-specific Quality Control Plan in accordance with our Quality Assurance Manual to ensure projects are delivered on time and within budget. The Project Manager and/or Principal-in-Charge will seek City feedback throughout the project and at the completion of each phase. All testing will comply with ASTM Standards and/or California Test Methods as specified in the Caltrans Manual of Testing, and reports will include detailed documentation of samples, procedures, conditions, equipment, and results.

Scope of Services
Willdan’s geotechnical team, led by Ross Khiabani, PE, GE, and Ali Kazem, PhD, EIT, with support from Director of Construction Services Chris Baca, RCI will provide the staffing and resources necessary to meet the City’s geotechnical engineering and materials testing needs. Our dedicated team will remain accessible during normal business hours for the duration of the project.

We prioritize strong, collaborative relationships with the City, design team, contractors, and all project stakeholders. Upon receiving directions from the City’s Project Manager, we will confirm project goals, develop a detailed work plan, and establish a task-based budget and schedule. Qualified staff will be assigned based on project needs, and all services will be delivered in accordance with City requirements and applicable federal, state, and local standards.

1. Willdan will coordinate closely with the City’s Project Manager to clearly understand each scope of work and effectively communicate project needs and objectives to our field staff, beginning with initial and continuing communications throughout the project.

2. We will collaborate with City staff to develop a work plan, budget, and schedule in accordance with the City’s approved QAP, performing all services in compliance with applicable codes, regulations, ordinances, and guidelines.

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On-Call Geotechnical Engineering Services 11

3. Our approach to providing services to the City is to assign qualified personnel to each phase of the project.

4. Reports will be reviewed by a geotechnical engineer and, if appropriate, a certified engineering geologist.

5. Preliminary reports and test results will be submitted in accordance with the City’s QAP timelines.

Laboratory and field testing will be performed by qualified, experienced technicians, and all results will be documented and logged.

6. The City will review the reports and make any changes before the final draft.

7. Willdan will provide all deliverables to the City for their archives.

Services shall be performed on an as-needed basis as directed by the City and may include, but are not limited to, the following:

A. Land Development Services

1. Pre-Entitlement Review
o Provide preliminary review of proposed private development projects prior to Planning Commission or City Council consideration.
o Review geotechnical reports, grading plans, and related technical documents associated with subdivisions, commercial developments, and other private projects. o Participate in meetings with City staff, applicants, and others as requested, either virtually or in person.

2. Permitting and Final Plan Review
o Review and recommend approval of geotechnical reports, grading plans, and related documents for entitled projects during the permitting phase.
o Provide written comments, redline markups, and technical recommendations consistent with City standards and applicable codes.

3. Construction Inspection and Field Services
o Provide inspection services for grading, compaction, and other geotechnical-related construction activities associated with private development.
o Provide inspection services in a timely manner, generally within forty-eight (48) hours of request, as coordinated with the City.

4. Meetings and Coordination
o Attend pre-construction meetings, design review meetings, construction coordination meetings, and other meetings as requested by the City.
o Provide clarification and technical support throughout the duration of each assigned project.

5. Plan Check Processing Requirements
o The City processes electronic plan submittals only. Consultants shall be capable of receiving, reviewing, and returning all plan check submittals, comments, and redline markups electronically.
o Standard plan check reviews shall be completed within ten (10) business days of receipt unless otherwise directed by the City.
o For complex projects, including subdivisions or large commercial developments, review timelines may be negotiated on a case-by-case basis.

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o For complex projects, including subdivisions or large commercial developments, review timelines may be coordinated with the City on a case-by-case basis.

B. General Engineering Services

1. Geotechnical Investigations and Design
o Perform soils investigations, analysis, testing, and geotechnical engineering evaluations for public improvement projects.
o Prepare technical studies, calculations, reports, plans, specifications, and recommendations related to geotechnical conditions.

2. Construction Inspection for Public Project
o Provide inspection services for grading, slope stabilization, street improvements, and miscellaneous facility improvements within public rights-of-way or on public property, including parks and City facilities.

3. Monitoring, Evaluation, and Advisory Services
o Provide geotechnical monitoring services for existing infrastructure, including but not limited to roadways, slopes, retaining structures, and other improvements. Services may include periodic site observations, condition assessments, instrumentation monitoring, documentation of observed conditions, and preparation of technical memoranda or reports summarizing findings and recommendations.

4. Other Geotechnical-Related Services
o Perform other geotechnical engineering-related tasks as requested by the City that are consistent with the qualifications of a California-licensed Geotechnical Engineer. o Such services may include, but are not limited to, forensic evaluations, peer review, technical advisory services, emergency response support, and specialized analyses related to soil, foundation, slope, and earthwork performance.

C. General Contract Provisions
 Willdan will serve as independent contractors to the City.  Willdan will not concurrently provide geotechnical services to other public or private clients conducting business with the City during the term of the agreement and for six (6) months following completion, unless the City determines that no conflict of interest exists.  Willdan will not provide plan review services for the City on projects where it has acted or will act as the agent or engineer for the developer of the project or permit applicant(s).  Compensation for individual assignments shall be on a lump-sum or time-and-materials basis, as specified in writing by the City at the time of assignment.

4. SCHEDULE
Budget and Schedule Control
Willdan understands the City may require services on short notice and under accelerated schedules. Our team is committed to responding promptly and meeting demanding timelines without compromising quality. The Project Manager monitors resources and budget performance through weekly reports generated in Ability to Provided Services
on Short Notice
We commit our team to respond to the
review, design and construction needs of
the City in a timely manner and to meet
accelerated project schedules

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Deltek T&E and IBM Cognos, tracking hours and expenditures by task to quickly identify variances. Timesheets are submitted weekly and logged promptly, enabling real-time project oversight.

Staffing is coordinated weekly to flexibly manage workload fluctuations across projects. With a strong track record of meeting schedules and maintaining quality, Willdan is confident in our ability to support the City’s construction timeline. Our management team remains committed to technical excellence, applying the full strength of the firm to deliver practical and effective solutions.

Baseline Schedule Development and Validation
At the outset of construction, we will work closely with the Contractor and the City to establish a fully detailed, logic-driven CPM baseline schedule that reflects the full contract duration and critical milestones. Our in-house scheduling team will conduct a comprehensive schedule review to verify proper sequencing, realistic durations, inclusion of utility coordination activities, regulatory constraints, long-lead procurement, and allowance for weather impacts, consistent with the contract requirements. The baseline schedule will not be recommended for approval until all discrepancies are resolved and the critical path is clearly defined.

Centralized Schedule Control and Monitoring
Once construction is underway, our Construction Manager will serve as the central hub for schedule coordination, using a spoke-and-wheel communication structure to align the Contractor, utilities, inspectors, designers, and City staff. We will rigorously monitor monthly schedule updates against the approved baseline and any City-approved time extensions, identifying variances, emerging risks, and shifts to the critical path.

Key schedule controls will include:
 Weekly review of the Contractor’s four-week look-ahead schedules  Formal tracking of planned versus actual progress
 Continuous validation that utility work, inspections, and third-party coordination are fully integrated into the CPM schedule
 Use of schedule analysis tools to verify logic, constraints, and float consumption Schedule status and concerns will be a standing agenda item at weekly progress meetings, ensuring transparency and timely corrective action.

Proactive Issue Identification and Mitigation
Our team emphasizes early identification of schedule risks before they become delays. Through daily field presence, close coordination with inspectors, and active management of RFIs, submittals, and change orders, we will identify potential impacts to the schedule and work with the City and Contractor to implement mitigation strategies. When issues arise, we will present the City with clear options, associated schedule impacts, and recommended paths forward to maintain progress.

Utility and Stakeholder Coordination
Given the project’s extensive utility interfaces and proximity to active transportation corridors, we will place special emphasis on utility coordination and stakeholder alignment. Utility activities will be tracked as scheduledriven tasks, not standalone efforts, ensuring accountability and integration with construction sequencing. Our team will also coordinate closely with City departments, transit agencies, and regulatory partners to avoid approval-related delays.

Time Impact Analysis and Change Management
When delays are alleged, our team will require properly documented Time Impact Analyses consistent with contract requirements. We will evaluate each request objectively, negotiate fair and defensible time extensions when warranted, and reject unsupported claims. This disciplined approach protects the City’s interests while maintaining momentum toward project completion.

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Reporting and Accountability
Schedule performance will be clearly documented and communicated through:
 Weekly Statements of Working Days
 Monthly CM progress reports comparing planned versus actual progress  Regular updates to the City Project Manager highlighting trends, risks, and corrective actions This structured reporting ensures City leadership has timely, accurate information to support informed decisionmaking.

Commitment to On-Time Delivery
Through centralized leadership, rigorous schedule controls, proactive coordination, and transparent communication, our Construction Management team will provide the focused oversight necessary to deliver the Shoreline Drive Realignment Project on schedule while meeting the City’s goals for safety, quality, and public accountability.

5. FEE PROPOSAL
Our proposed fee proposal has been submitted separately.

6. AGREEMENT
Willdan confirms that all terms and conditions are acceptable in the City’s Consultant Services Agreement.

WILLDAN ENGINEERING
Schedule of Hourly Rates
Effective July 1, 2025 to June 30, 2026
** For Non-Prevailing Wage Project *** For Prevailing Wage Project Mileage/Field Vehicle usage will be charged at the rate in accordance with the current FTR mileage reimbursement rate, subject to negotiation.

Additional billing classifications may be added to the above listing during the year as new positions are created. Consultation in connection with litigation and court appearances will be quoted separately. The above schedule is for straight time. Overtime will be charged at 1.5 times, and Sundays and holidays, 2.0 times the standard rates. Blueprinting, reproduction, messenger services, and printing will be invoiced at cost plus fifteen percent (15%). A sub consultant management fee of fifteen percent (15%) will be added to the direct cost of all sub consultant services to provide for the cost of administration, consultation, and coordination. Valid July 1, 2025 thru June 30, 2026, thereafter, the rates may be raised once per year to the value between the 12-month % change of the Consumer Price Index for the Los Angeles/Orange County/Sacramento/San Francisco/San Jose area and five percent. For prevailing wage classifications, the increase will be per the prevailing wage increase set by the California Department of Industrial Relations.

Rev02 - 01.08.2026

DESIGN ENGINEERING
Technical Aide I $83
Technical Aide II $106
Technical Aide III $124
CAD Operator I $132
CAD Operator II $153
CAD Operator III $170
GIS Analyst I $169
GIS Analyst II $185
GIS Analyst III $193
Environmental Analyst I $149
Environmental Analyst II $166
Environmental Analyst III $177
Environmental Specialist $191
Designer I $174
Designer II $181
Senior Designer I $190
Senior Designer II $199
Design Manager $205
Senior Design Manager $212
Plans Reviewer I $160
Plans Reviewer II $178
Senior Plans Reviewer $195
Project Manager I $198
Project Manager II $220
Project Manager III $238
Project Manager IV $253
Principal Project Manager $263
Assistant Engineer I $146
Assistant Engineer II $160
Assistant Engineer III $169
Assistant Engineer IV $180
Associate Engineer I $189
Associate Engineer II $198
Associate Engineer III $202
Senior Engineer I $205
Senior Engineer II $210
Senior Engineer III $213
Senior Engineer IV $217
Supervising Engineer $226
Traffic Engineer I $226
Traffic Engineer II $253
City Engineer I $241
City Engineer II $253
Deputy Director $270
Director $285
Principal Engineer $325

BUILDING AND SAFETY
Code Enforcement Technician $109
Code Enforcement Officer $125
Senior Code Enforcement Officer $147
Supervisor Code Enforcement $178
Fire Plans Examiner $178
Senior Fire Plans Examiner $195
Fire Inspector $164
Senior Fire Inspector $178
Fire Marshal $210
Plans Examiner Aide $117
Plans Examiner $178
Senior Plans Examiner $195
Assistant Construction Permit
Specialist
$125
Construction Permit Specialist $131
Senior Construction Permit
Specialist
$155
Supervising Construction Permit
Specialist
$164
Assistant Building Inspector $147
Building Inspector $164
Senior Building Inspector $178
Supervising Building Inspector $195
Inspector of Record $208
Assistant Building Official $185
Deputy Building Official $211
Building Official $221
Plan Check Engineer $204
Supervising Plan Check Engineer $206
Principal Project Manager $263
Deputy Director $270
Director $285

PLANNING
CDBG Technician $97
CDBG Specialists $114
CDBG Analyst $132
Sr. CDBG Analyst $140
CDBG Coordinator $156
CDBG Manager $188
Housing Specialist $138
Housing Program Coordinator $156
Planning Technician $134
Assistant Planner $167
Associate Planner $181
Senior Planner $206
Principal Planner $215
Planning Manager $228
Deputy Director $270
Director $285

CONSTRUCTION MANAGEMENT
Labor Compliance Specialist $150
Senior Labor Compliance Specialist $165
Assistant Labor Compliance Manager $180
Labor Compliance Manager $200
Utility Coordinator $172
Office Engineer I $151
Office Engineer II $165
Assistant Construction Manager $172
Construction Manager $191
Senior Construction Manager $207
Resident Engineer I $215
Resident Engineer II $223
Project Manager IV $253
Deputy Director $270
Director $285

INSPECTION SERVICES
Public Works Observer ** $135
Public Works Observer *** $170
Senior Public Works Observer** $147
Senior Public Works Observer *** $170

MAPPING AND EXPERT SERVICES
Survey Analyst I $151
Survey Analyst II $174
Senior Survey Analyst $187
Supervisor - Survey & Mapping $209
Principal Project Manager $263

LANDSCAPE ARCHITECTURE
Assistant Landscape Architect $157
Associate Landscape Architect $181
Senior Landscape Architect $199
Principal Landscape Architect $211
Principal Project Manager $263

ADMINISTRATIVE
Administrative Assistant I $102
Administrative Assistant II $123
Administrative Assistant III $144
Project Accountant I $116
Project Accountant II $136
Project Controller I $144
Project Controller II $163

Rev V01 04.16.2025

WILLDAN GEOTECHNICAL / MATERIALS TESTING
Prevailing Wage
Schedule of Hourly Rates
Effective July 1, 2025 to June 30, 2026
**For inspector/soil technician there is a four-hour minimum. Any hours worked more than the four-hour minimum will be charged at the eight-hour daily rate. Same day cancellations will be charged as a four-hour minimum.

Mileage/Field Vehicle usage will be charged at the rate in accordance with the current FTR mileage reimbursement rate, subject to negotiation. Travel time to and from the job site will be charged at the hourly rates for the appropriate personnel.

Staff assignments depend on availability of personnel, site location, and the level of experience that will satisfy the technical requirements of the project and meet the prevailing standard of professional care.

The above schedule is for straight time. Overtime will be charged at 1.5 times, and Sundays and holidays, 2.0 times the standard rates.. Blueprinting, reproduction, messenger services, and printing will be invoiced at cost plus fifteen percent (15%). A subconsultant management fee of fifteen percent (15%) will be added to the direct cost of all subconsultant services to provide for the cost of administration, consultation, and coordination. Valid July 1, 2025 thru June 30, 2026, thereafter, the rates may be raised once per year to the value between the 12-month % change of the Consumer Price Index for the Los Angeles/Orange County/Sacramento/San Francisco/San Jose area and five percent. For prevailing wage classifications, the increase will be per the prevailing wage increase set by the California Department of Industrial Relations.

GEOTECHNICAL
Soil Technician (Prevailing Wages)** $157
Sr. Soil Technician (Prevailing Wages)** $157
Geologist II $200
Supervising Geologist $226
CAD Operator II $153
Assistant Engineer I $144
Assistant Engineer II $160
Assistant Engineer III $169
Senior Engineer I $205
Senior Engineer II $210
Senior Engineer III $213
Supervising - Lab Inspector $148
Field Operations Manager $159
Supervising Engineer $226
Principal Project Manager $247
Principal Engineer $278

SPECIAL INSPECTION
Special Inspection (Prevailing Wages)** $164
Supervisor $178

ADMINISTRATIVE
Administrative Assistant I $102
Administrative Assistant II $123
Administrative Assistant III $144

EXPERT WITNESS
Principal Engineer/Geologist $453

Rev V01 04.16.2025

WILLDAN GEOTECHNICAL / MATERIALS TESTING
Non-Prevailing Wage
Schedule of Hourly Rates
Effective July 1, 2025 to June 30, 2026
Staff assignments depend on availability of personnel, site location, and the level of experience that will satisfy the technical requirements of the project and meet the prevailing standard of professional care. The above schedule is for straight time. Overtime will be charged at 1.5 times, and Sundays and holidays, 2.0 times the standard rates.

Mileage/Field Vehicle usage will be charged at the rate in accordance with the current FTR mileage reimbursement rate, subject to negotiation. Travel time to and from the job site will be charged at the hourly rates for the appropriate personnel. Blueprinting, reproduction, messenger services, and printing will be invoiced at cost plus fifteen percent (15%). A subconsultant management fee of fifteen percent (15%) will be added to the direct cost of all subconsultant services to provide for the cost of administration, consultation, and coordination. Valid July 1, 2025 thru June 30, 2026, thereafter, the rates may be raised once per year to the value between the 12-month % change of the Consumer Price Index for the Los Angeles/Orange County/Sacramento/San Francisco/San Jose area and five percent.

GEOTECHNICAL
Soil Technician (Non-Prevailing Wages) $101
Sr. Soil Technician (Non-Prevailing Wages) $119
Geologist II $200
Supervising Geologist $226
CAD Operator II $153
Assistant Engineer I $144
Assistant Engineer II $160
Assistant Engineer III $169
Senior Engineer I $205
Senior Engineer II $210
Senior Engineer III $213
Supervising - Lab Inspector $148
Field Operations Manager $159
Supervising Engineer $226
Principal Project Manager $247
Principal Engineer $278

SPECIAL INSPECTION
Special Inspection (Non-Prevailing Wages) $101
Supervisor $178

ADMINISTRATIVE
Administrative Assistant I $102
Administrative Assistant II $123
Administrative Assistant III $144

EXPERT WITNESS
Principal Engineer/Geologist $453

Rev V01 04.16.2025

WILLDAN GEOTECHNICAL / MATERIALS TESTING
Unit Testing Rate Sheet*
Effective July 1, 2025 to June 30, 2026
Identification and Index Properties
In-situ Moisture and Density (ASTM D2937) $50 per Test
Grain Size Analysis – Sieve Only (ASTM D6913) $150 per Test Grain Size Analysis – Sieve & Hydrometer (ASTM D6913 & D7928) $250 per Test Percent Passive #200 Sieve (ASTM D1140) $120 per Test
Atterberg Limits – Multi Point (ASTM D4318) $250 per Test Atterberg Limits – One Point (ASTM D4318) $100 per Test Specific Gravity (ASTM D854) $150 per Test
Sand Equivalent (ASTM D2419) $168 per Test
Compaction and Bearing Strength
Modified Proctor Compaction – Method A or B (ASTM D1557) $350 per Test Modified Proctor Compaction – Method C (ASTM D1557) $350 per Test Compaction (CTM 216) $285 per Test
California Bearing Ratio, CBR – 3 Points (ASTM D1883) $600 per Test R-Value $400 per Test
Shear Strength
Torvane / Pocket Penetrometer $25 per Test
Direct Shear, Consolidated Drained – 3 Point (ASTM D3080) $650 per Test Direct Shear, Residual – per Point (ASTM D3080) $220 per Test Unconfined Compression (ASTM D2166) $160 per Test
Unconsolidated-Undrained (UU) $250 per Test
Consolidation, Collapse and Swell
Consolidation – 8 Load Increments w/ One Time Rate (ASTM D2435) $600 per Test Consolidation – Additional Load Increment (ASTM D2435) $130 per Test Consolidation – Additional Time Rate per Load Increment (ASTM D2435) $130 per Test Collapse Test – Single Point $130 per Test
Single Load Swell Test – Ring Sample, Field Moisture (ASTM D4546) $350 per Test Single Load Swell Test – Ring Sample, Air Dried (ASTM D4546) $350 per Test Remolded Sample per Specimen $95 per Test
Expansion Index (ASTM D4829 / UBC 29-2) $200 per Test
Laboratory Permeability
Constant Head (ASTM D2434) $350 per Test
Falling Head Flexible Wall (ASTM D5084) $350 per Test
Triaxial Permeability (EPA 9100) $400 per Test
Chemical Tests
Corrosivity (pH, Resistivity, Sulfates, Chlorides) $250 per Test Organic Contents (ASTM D2974) $125 per Test
Asphalt Tests
Extraction / Asphalt (CTM 382) $300 per Test
Hveem / Marshall Maximum Density (CTM 304, 308) $500 per Test Wash Gradation (CTM 202) $200 per Test

Rev V01 04.16.2025

WILLDAN GEOTECHNICAL / MATERIALS TESTING
Unit Testing Rate Sheet*
Effective July 1, 2025 to June 30, 2026
Concrete
6”x12” & 4"x8" Cylinder Compression Test (ASTM C39) $50 per Test 2”, 4” & 6” Diameter Cores Compression Test $50 per Test 3”x6” Cylinder Lightweight Concrete Compression Test (ASTM C495) $50 per Test Shotcrete / Gunite Lab Coring & Compression Test (ASTM C42) $100 per Test Unit Weight of Hardened Lightweight Concrete (ASTM C567) $85 per Test Rapid Cure Concrete Cylinders (Boil Method) (ASTM C684) $100 per Test Masonry
2”x4” Mortar Cylinder Compression Test (ASTM C780) $50 per Test 2”x2” Mortar Cube Compression Test (ASTM C109) $50 per Test 3”x6” Grout Prism Compression Test (ASTM C1019) $50 per Test CMU Grouted Prism Compression Test, up to 8”x8”x16” (ASTM E447) $275 per Test CMU Grouted Prism Compression Test, larger than 8”x8”x16” (ASTM E447) $300 per Test Steel Reinforcement
Tensile or Bend Test, up to #8 (ASTM A370) $200 per Test Tensile or Bend Test, #9 to #11 (ASTM A370) $250 per Test Tensile or Bend Test, #14 (ASTM A370) $300 per Test
Fireproofing
Unit Weight (UBC 7-6) $55 per Test
Cohesion / Adhesion (UBC 7-6) $65 per Test
Non-Destructive Testing (NDT)
Dye Penetrant Testing $145 per Hour
Ultrasonic Testing $145 per Hour
Magnetic Particle Testing $145 per Hour
Radiographic Testing Quote
Administrative Services
Sample Pickup from Field (within 100 miles of lab $190 per Trip Saturday Sample Pickup from Field (within 100 miles of lab $310 per Trip Sunday Sample Pickup from Field (within 100 miles of lab $310 per Trip Mix Design Review $900 per Mix
Lab Test Report $50 per Report
Field Vehicle Usage (by Soil/Asphalt Technician) $10 per Trip Field Nuclear Gauge Usage (by Soil/Asphalt Technician) $60 per Trip *A not to exceed (NTE) $500 fee will be assessed for field compaction testing when performing by a full time public works inspection or when providing materials inspection at the minimum of 4 hours, as the field compaction tests are included in the material inspector’s hourly rate. If performing public works inspection under 4 hours will be charged for field compaction testing at a unit cost of $75 per test.

1 CONSULTANT SERVICES AGREEMENT
THIS AGREEMENT (the "Agreement") is made as of June 16, 2026 by and between the City of Diamond Bar, a municipal corporation ("City") and Ninyo & Moore, Inc., a California corporation ("Consultant").

1. Consultant's Services.

Subject to the terms and conditions set forth in this Agreement Consultant shall provide to the reasonable satisfaction of the City the Traffic and Transportation Engineering services set forth in the attached Exhibit "A", which is incorporated herein by this reference. As a material inducement to the City to enter into this Agreement, Consultant represents and warrants that it has thoroughly investigated the work and fully understands the difficulties and restrictions in performing the work. Consultant represents that it is fully qualified to perform such consulting services by virtue of its experience and the training, education and expertise of its principals and employees.

Vivian Chen, Associate Engineer (herein referred to as the “City’s Project Manager”), shall be the person to whom the Consultant will report for the performance of services hereunder. It is understood that Consultant shall coordinate its services hereunder with the City’s Project Manager to the extent required by the City’s Project Manager, and that all performances required hereunder by Consultant shall be performed to the satisfaction of the City’s Project Manager and the City Manager

2. Term of Agreement. This Agreement shall take effect July 1, 2026, and shall continue until June 30, 2029 unless earlier terminated pursuant to the provisions herein.

The City shall have the option to extend this Agreement for one (1) additional two (2) year term, subject to the same terms and conditions contained herein, by giving Consultant written notice of the exercise of this option at least thirty (30) days prior to the expiration of the initial Term. In the event the City exercises its option to extend the Term, Consultant's compensation shall be subject to an adjustment upon the effective date of extension as follows:

Consultant’s rates shall be fixed during the initial Term of this Agreement. Rate increases in compensation will be only considered in the event the City exercises its option to extend the Agreement and apply as of July 1, 2029. Any rate increase will be negotiated between the City and the Consultant, but in no event shall the increase exceed the amount that the Consumer Price Index ("CPI") for the Los AngelesAnaheim-Riverside metropolitan area for the month immediately preceding the Adjustment Date (the "Index Month") as reported by the Bureau of Labor Statistics of the United States Department of Labor, has increased over the CPI for the month one year prior to the Index Month.

2 3. Compensation. City agrees to compensate Consultant for each service which Consultant performs to the satisfaction of City in compliance with the scope of services set forth in Exhibit "A". Payment will be made only after submission of proper invoices in the form specified by City. Total payment to Consultant pursuant to this Agreement shall not exceed One Hundred Thousand Dollars and Zero Cents ($100,000.00) per Fiscal Year without the prior written consent of the City. The above not-to-exceed amount shall include all costs, including but not limited to, all clerical, administrative, overhead, telephone, travel and all related expenses.

4. Payment.

A. Consultant shall submit to City an invoice for the services completed, authorized expenses and authorized extra work actually performed or incurred.

B. All such invoices shall state the basis for the amount invoiced, including services completed, the number of hours spent and any extra work performed.

C. Payment will be made only after submission of proper invoices.

D. City will pay Consultant the amount property invoiced within 35 days of receipt.

5. Change Orders. No payment for extra services caused by a change in the scope or complexity of work, or for any other reason, shall be made unless and until such extra services and a price therefore have been previously authorized in writing and approved by the City Manager or his designee as an amendment to this Agreement.

The amendment shall set forth the changes of work, extension of time, if any, and adjustment of the fee to be paid by City to Consultant.

6. Priority of Documents. In the event of any inconsistency between the provisions of this Agreement and any attached exhibits, the provisions of this Agreement shall control.

7. Status as Independent Contractor.

A. Consultant is, and shall at all times remain as to City, a wholly independent contractor. Consultant shall have no power to incur any debt, obligation, or liability on behalf of City or otherwise act on behalf of City as an agent, except as specifically provided herein. Neither City nor any of its agents shall have control over the conduct of Consultant or any of Consultant's employees, except as set forth in this Agreement. Consultant shall not, at any time, or in any manner, represent that it or any of its agents or employees are in any manner employees of City.

B. Consultant agrees to pay all required taxes on amounts paid to Consultant under this Agreement, and to indemnify and hold City harmless from any and all taxes, assessments, penalties, and interest asserted against City by reason of the independent contractor relationship created by this Agreement. In the event that City is

3 audited by any Federal or State agency regarding the independent contractor status of Consultant and the audit in any way fails to sustain the validity of a wholly independent contractor relationship between City and Consultant, then Consultant agrees to reimburse City for all costs, including accounting and attorney's fees, arising out of such audit and any appeals relating thereto.

C. Consultant shall fully comply with Workers' Compensation laws regarding Consultant and Consultant's employees. Consultant further agrees to indemnify and hold City harmless from any failure of Consultant to comply with applicable Worker's Compensation laws.

D. Consultant shall, at Consultant’s sole cost and expense, fully secure and comply with all federal, state and local governmental permit or licensing requirements, including but not limited to the City of Diamond Bar, South Coast Air Quality Management District, and California Air Resources Board.

E. In addition to any other remedies it may have, City shall have the right to offset against the amount of any fees due to Consultant under this Agreement any amount due to City from Consultant as a result of Consultant's failure to promptly pay to City any reimbursement or indemnification required by this Agreement or for any amount or penalty levied against the City for Consultant’s failure to comply with this Section.

8. Standard of Performance. Consultant shall perform all work at the standard of care and skill ordinarily exercised by members of the profession under similar conditions and represents that it and any subcontractors it may engage, possess any and all licenses which are required to perform the work contemplated by this Agreement and shall maintain all appropriate licenses during the performance of the work.

9. Indemnification.

To the maximum extent permitted by Civil Code section2782.8, Consultant shall indemnify, defend with counsel approved by City, and hold harmless City, its officers, officials, employees and volunteers ("Indemnitees") from and against all liability, loss, damage, expense, cost (including without limitation reasonable attorneys' fees, expert fees and all other costs and fees of litigation) of every nature arising out of or in connection with:
(1) Any and all claims under Workers’ Compensation Act and other employee benefit acts with respect to Consultant’s employees or Consultant’s contractor’s employees arising out of Consultant’s work under this Agreement; and (2) Any and all claims arising out of Consultant's performance of work hereunder or its failure to comply with any of its obligations contained in this Agreement, regardless of City’s passive negligence, but excepting such loss or damage which is caused by the sole active negligence or willful misconduct of the City. Should City in its

4 sole discretion find Consultant’s legal counsel unacceptable, then Consultant shall reimburse the City its costs of defense, including without limitation reasonable attorneys' fees, expert fees and all other costs and fees of litigation. The Consultant shall promptly pay any final judgment rendered against the Indemnitees. It is expressly understood and agreed that the foregoing provisions are intended to be as broad and inclusive as is permitted by the law of the State of California and will survive termination of this Agreement. Except for the Indemnitees, this Agreement shall not be construed to extend to any third-party indemnification rights of any kind. (3) Any and all claims for loss, injury to or death of persons or damage to property caused by the negligent professional act or omission in the performance of professional services pursuant to this Agreement.
(4) The Consultant’s obligations to indemnify, defend and hold harmless the City shall survive termination of this Agreement.

10. Insurance.

A. Consultant shall at all times during the term of this Agreement carry, maintain, and keep in full force and effect, with an insurance company authorized to do business in the State of California and approved by the City the following insurance:
(1) A policy or policies of broad-form comprehensive general liability insurance written on an occurrence basis with minimum limits of $1,000,000.00 combined single limit coverage against any injury, death, loss or damage as a result of wrongful or negligent acts by Consultant, its officers, employees, agents, and independent contractors in performance of services under this Agreement; (2) Property damage insurance with a minimum limit of $500,000.00 per occurrence;
(3) Automotive liability insurance written on an occurrence basis covering all owned, non-owned and hired automobiles, with minimum combined single limits coverage of $1,000,000.00;
(4) Worker's Compensation insurance when required by law, with a minimum limit of $500,000.00 or the amount required by law, whichever is greater; and
(5) Professional liability insurance covering errors and omissions arising out of the performance of this Agreement with a combined single limit of $1,000,000. If such insurance is on a claims made basis, Consultant agrees to keep such insurance in full force and effect for at least five years after termination or date of completion of this Agreement.

5 B. The City, its officers, employees, agents, and volunteers shall be named as additional insureds on the policies as to comprehensive general liability, property damage, and automotive liability. The policies as to comprehensive general liability, property damage, and automobile liability shall provide that they are primary, and that any insurance maintained by the City shall be excess insurance only.

C. All insurance policies shall provide that the insurance coverage shall not be non-renewed, canceled, reduced, or otherwise modified (except through the addition of additional insureds to the policy) by the insurance carrier without the insurance carrier giving City at least ten (10) days prior written notice thereof. Consultant agrees that it will not cancel, reduce or otherwise modify the insurance coverage and in the event of any of the same by the insurer to immediately notify the City.

D. All policies of insurance shall cover the obligations of Consultant pursuant to the terms of this Agreement and shall be issued by an insurance company which is authorized to do business in the State of California or which is approved in writing by the City; and shall be placed have a current A.M. Best's rating of no less than A-, VII. In the case of professional liability insurance, such coverage shall be issued by companies either licensed or admitted to conduct business in the State of California as long as such insurers possess the aforementioned Best’s rating.

E. Consultant shall submit to City (1) insurance certificates indicating compliance with the minimum insurance requirements above, and (2) insurance policy endorsements or a copy of the insurance policy evidencing the additional insured requirements in this Agreement, in a form acceptable to the City.

F. Self-Insured Retention/Deductibles. All policies required by this Agreement shall allow City, as additional insured, to satisfy the self-insured retention (“SIR”) and/or deductible of the policy in lieu of the Consultant (as the named insured) should Consultant fail to pay the SIR or deductible requirements. The amount of the SIR or deductible shall be subject to the approval of the City. Consultant understands and agrees that satisfaction of this requirement is an express condition precedent to the effectiveness of this Agreement. Failure by Consultant as primary insured to pay its SIR or deductible constitutes a material breach of this Agreement. Should City pay the SIR or deductible on Consultant’s due to such failure in order to secure defense and indemnification as an additional insured under the policy, City may include such amounts as damages in any action against Consultant for breach of this Agreement in addition to any other damages incurred by City due to the breach.

G. Subrogation. With respect to any Workers' Compensation Insurance or Employer's Liability Insurance, the insurer shall waive all rights of subrogation and contribution it may have against the Indemnitees.

H. Failure to Maintain Insurance. If Consultant fails to keep the insurance required under this Agreement in full force and effect, City may take out the necessary insurance and any premiums paid, plus 10% administrative overhead, shall be paid by Consultant, which amounts may be deducted from any payments due Consultant.

6 I. Consultant shall include all subcontractors, if any, as insureds under its policies or shall furnish separate certificates and endorsements for each subcontractor to the City for review and approval. All insurance for subcontractors shall be subject to all of the requirements stated herein.

11. Confidentiality. Consultant in the course of its duties may have access to confidential data of City, private individuals, or employees of the City. Consultant covenants that all data, documents, discussion, or other information developed or received by Consultant or provided for performance of this Agreement are deemed confidential and shall not be disclosed by Consultant without written authorization by City. City shall grant such authorization if disclosure is required by law. All City data shall be returned to City upon the termination of this Agreement. Consultant's covenant under this section shall survive the termination of this Agreement. Notwithstanding the foregoing, to the extent Consultant prepares reports of a proprietary nature specifically for and in connection with certain projects, the City shall not, except with Consultant's prior written consent, use the same for other unrelated projects.

12. Ownership of Materials. Except as specifically provided in this Agreement, all materials provided by Consultant in the performance of this Agreement shall be and remain the property of City without restriction or limitation upon its use or dissemination by City. Consultant may, however, make and retain such copies of said documents and materials as Consultant may desire.

13. Maintenance and Inspection of Records. In accordance with generally accepted accounting principles, Consultant and its subcontractors shall maintain reasonably full and complete books, documents, papers, accounting records, and other information (collectively, the “records”) pertaining to the costs of and completion of services performed under this Agreement. The City and any of their authorized representatives shall have access to and the right to audit and reproduce any of Consultant's records regarding the services provided under this Agreement. Consultant shall maintain all such records for a period of at least three (3) years after termination or completion of this Agreement. Consultant agrees to make available all such records for inspection or audit at its offices during normal business hours and upon three (3) days' notice from the City, and copies thereof shall be furnished if requested.

14. Conflict of Interest.

A. Consultant covenants that it presently has no interest and shall not acquire any interest, direct or indirect, which may be affected by the services to be performed by Consultant under this Agreement, or which would conflict in any manner with the performance of its services hereunder. Consultant further covenants that, in performance of this Agreement, no person having any such interest shall be employed by it. Furthermore, Consultant shall avoid the appearance of having any interest which would conflict in any manner with the performance of its services pursuant to this Agreement.

7 B. Consultant covenants not to give or receive any compensation, monetary or otherwise, to or from the ultimate vendor(s) of hardware or software to City as a result of the performance of this Agreement. Consultant's covenant under this section shall survive the termination of this Agreement.

15. Termination. The City may terminate this Agreement with or without cause upon thirty (30) days' written notice to Consultant. The effective date of termination shall be upon the date specified in the notice of termination, or, in the event no date is specified, upon the thirtieth (30th) day following delivery of the notice. In the event of such termination, City agrees to pay Consultant for services satisfactorily rendered prior to the effective date of termination. Immediately upon receiving written notice of termination, Consultant shall discontinue performing services, unless the notice provides otherwise, except those services reasonably necessary to effectuate the termination. The City shall be not liable for any claim of lost profits.

16. Personnel/Designated Person. Consultant represents that it has, or will secure at its own expense, all personnel required to perform the services under this Agreement. All of the services required under this Agreement will be performed by Consultant or under it supervision, and all personnel engaged in the work shall be qualified to perform such services. Except as otherwise authorized by the City’s Project Manager, Consultant reserves the right to determine the assignment of its own employees to the performance of Consultant’s services under this Agreement, but City reserves the right in its sole discretion to required Consultant to exclude any employee from performing services on City’s premises.

17. Non-Discrimination and Equal Employment Opportunity.

A. Consultant shall not discriminate as to race, color, creed, religion, sex, marital status, national origin, ancestry, age, physical or mental handicap, medical condition, or sexual orientation, in the performance of its services and duties pursuant to this Agreement, and will comply with all rules and regulations of City relating thereto.

Such nondiscrimination shall include but not be limited to the following: employment, upgrading, demotion, transfers, recruitment or recruitment advertising; layoff or termination; rates of pay or other forms of compensation; and selection for training, including apprenticeship.

B. Consultant will, in all solicitations or advertisements for employees placed by or on behalf of Consultant state either that it is an equal opportunity employer or that all qualified applicants will receive consideration for employment without regard to race, color, creed, religion, sex, marital status, national origin, ancestry, age, physical or mental handicap, medical condition, or sexual orientation.

C. Consultant will cause the foregoing provisions to be inserted in all subcontracts for any work covered by this Agreement except contracts or subcontracts for standard commercial supplies or raw materials.

18. Reserved

8 19. Time Is of the Essence. Time is of the essence in this Agreement.

Consultant shall do all things necessary and incidental to the prosecution of Consultant's work.

20. Delays and Extensions of Time. Consultant's sole remedy for delays outside its control shall be an extension of time. No matter what the cause of the delay, Consultant must document any delay and request an extension of time in writing at the time of the delay to the satisfaction of City. Any extensions granted shall be limited to the length of the delay outside Consultant’s control. If Consultant believes that delays caused by the City will cause it to incur additional costs, it must specify, in writing, why the delay has caused additional costs to be incurred and the exact amount of such cost within 10 days of the time the delay occurs. No additional costs can be paid that exceed the not to exceed amount absent a written amendment to this Agreement. In no event shall the Consultant be entitled to any claim for lost profits due to any delay, whether caused by the City or due to some other cause.

21. Assignment. Consultant shall not assign or transfer any interest in this Agreement nor the performance of any of Consultant's obligations hereunder, without the prior written consent of City, and any attempt by Consultant to so assign this Agreement or any rights, duties, or obligations arising hereunder shall be void and of no effect.

22. Compliance with Laws. Consultant shall comply with all applicable laws, ordinances, codes and regulations of the federal, state, and local governments.

23. Non-Waiver of Terms, Rights and Remedies. Waiver by either party of any one or more of the conditions of performance under this Agreement shall not be a waiver of any other condition of performance under this Agreement. In no event shall the making by City of any payment to Consultant constitute or be construed as a waiver by City of any breach of covenant, or any default which may then exist on the part of Consultant, and the making of any such payment by City shall in no way impair or prejudice any right or remedy available to City with regard to such breach or default.

24. Attorney’s Fees. In the event that either party to this Agreement shall commence any legal or equitable action or proceeding to enforce interpret the provisions of this Agreement, the prevailing party in such action or proceeding shall be entitled to recover its costs of suit, including reasonable attorney’s fees and costs, including costs of expert witnesses and consultants.

25. Mediation. Any dispute or controversy arising under this Agreement, or in connection with any of the terms and conditions hereof, which cannot be resolved by the parties, may be referred by the parties hereto for mediation. A third party, neutral mediation service shall be selected, as agreed upon by the parties and the costs and expenses thereof shall be borne equally by the parties hereto. The parties agree to utilize their good faith efforts to resolve any such dispute or controversy so submitted to mediation. It is specifically understood and agreed by the parties hereto that mutual

9 good faith efforts to resolve the same any dispute or controversy as provided herein, shall be a condition precedent to the institution of any action or proceeding, whether at law or in equity with respect to any such dispute or controversy.

26. Notices. Any notices, bills, invoices, or reports required by this Agreement shall be deemed received on (a) the day of delivery if delivered by hand during regular business hours or by facsimile before or during regular business hours; or (b) on the third business day following deposit in the United States mail, postage prepaid, to the addresses heretofore set forth in the Agreement, or to such other addresses as the parties may, from time to time, designate in writing pursuant to the provisions of this section.
“CONSULTANT” “CITY”
Ninyo and Moore, Inc. City of Diamond Bar
475 Goddard, Suite 200 21810 Copley Drive
Irvine, CA 92618 Diamond Bar, CA 91765-4178
Attn.: Kurt S. Yoshii, PE, GE Attn.: Daniel Fox, City Manager Phone: 949-753-7070 Phone: (909) 839-7010
E-mail: [email protected] E-mail: [email protected]

27. Governing Law. This Agreement shall be interpreted, construed and enforced in accordance with the laws of the State of California.

28. Counterparts. This Agreement may be executed in any number of counterparts, each of which shall be deemed to be the original, and all of which together shall constitute one and the same instrument.

29. Entire Agreement. This Agreement, and any other documents incorporated herein by reference, represent the entire and integrated agreement between Consultant and City. This Agreement supersedes all prior oral or written negotiations, representations or agreements. This Agreement may not be amended, nor any provision or breach hereof waived, except in a writing signed by the parties which expressly refers to this Agreement. Amendments on behalf of the City will only be valid if signed by a person duly authorized to do so under the City's Purchasing Ordinance.

IN WITNESS of this Agreement, the parties have executed this Agreement as of the date first written above.

10 "Consultant" "City"

CITY OF DIAMOND BAR
By: ______ By:

Printed Name________________ Dan Fox, City Manager
Title: ___________________________
By: ATTEST:

Printed Name:

Title:

Kristina Santana, City Clerk
Approved as to form:

By:

Omar Sandoval, City Attorney
*NOTE:If Consultant is a corporation, the City requires the following signature(s):
-- (1) the Chairman of the Board, the President or a Vice-President, AND (2) the Secretary, the Chief Financial Officer, the Treasurer, an Assistant Secretary or an Assistant Treasurer. If only one corporate officer exists or one corporate officer holds more than one corporate office, please so indicate. OR
-- The corporate officer named in a corporate resolution as authorized to enter into this Agreement. A copy of the corporate resolution, certified by the Secretary close in time to the execution of the Agreement, must be provided to the City.

P04-05386
ninyoandmoore.com
REQUEST FOR PROPOSALS for

ON-CALL GEOTECHNICAL ENGINEERING SERVICES
Hal Ghafari, P.E.

Public Works Manager/Assistant City Engineer
City of Diamond Bar
21810 Copley Drive
Diamond Bar, California 91765
April 23, 2026

i NINYO & MOORE, A SOCOTEC COMPANY
475 Goddard, Suite 200, Irvine, California 92618 | 949.753.7070 | www.ninyoandmoore.com April 23, 2026
Proposal No. 04-05386
Hal Ghafari, P.E.

Public Works Manager/Assistant City Engineer
City of Diamond Bar
21810 Copley Drive
Diamond Bar, California 91765
Subject: Proposal for On-Call Geotechnical Engineering Services City of Diamond Bar
Dear Mr. Ghafari:

Ninyo & Moore Geotechnical & Environmental Sciences Consultants (Ninyo & Moore) appreciates your consideration of our proposal to provide geotechnical engineering services for the City of Diamond Bar (City) in response to the City’s Request for Proposal (RFP) issued March 17, 2026, Q&A Set 1 and Addendum No. 1 issued April 14, 2026. We fully understand the City’s needs and desires for a qualified consultant that can respond quickly and effectively. We are ready to meet the City’s requirements by making available dedicated professionals who have the requisite experience and resources to meet your project needs:

Relevant Experience
Ninyo & Moore is very familiar with the City’s policies and procedures having provided on-call geotechnical engineering services on various projects since 2006. Ninyo & Moore also has a proven track record for providing similar on-call geotechnical engineering consulting services to many other cities, counties, and other public agencies, including the cities of Los Angeles, Long Beach, La Habra, Brea, Anaheim, Fountain Valley, Newport Beach, Rancho Santa Margarita, Mission Viejo, Riverside, Fontana, Rancho Cucamonga, and Moreno Valley; counties of Los Angeles, Orange, and San Bernardino; the Los Angeles Unified School District, Riverside County Transportation Commission, John Wayne Airport Authority, Orange County Sanitation District, and many other agencies and municipalities. Ninyo & Moore is experienced with the coordination and administration of on-call contracts and can effectively provide responsive and comprehensive services to the City.

Ready to Start Work Immediately
Our staff understands the technical and administrative requirements of on-call contracts as well as the geotechnical conditions throughout the region. In addition, the resources of Ninyo & Moore, one of the largest geotechnical consulting firms in southern California employing 1,700 professionals and possessing five fully-equipped, in-house soil and materials testing laboratories in California (three in southern California), has the manpower and equipment necessary to provide the required services for this contract and we are ready to start work immediately.

Credentialed Laboratory
Ninyo & Moore’s fully equipped, in-house testing laboratories offer full-service field and laboratory testing services for construction materials and geotechnical projects. Our laboratories are accredited by the American Association of State Highway and Transportation Officials (AASHTO re:source), Cement and Concrete Reference Laboratory (CCRL), Caltrans, the Division of the State Architect (DSA), the City of Los Angeles, and many other public agencies.

NINYO & MOORE, A SOCOTEC COMPANY
City of Diamond Bar - On-Call Geotechnical Engineering Services | 04-05386 | April 23, 2026 ii
As the contact person who will be authorized to make representations and bind the terms of this proposal for Ninyo & Moore, I will be readily available and can be reached by telephone at 949.753.7070 ext.12233 and/or email at kurt. [email protected] to answer any questions during your evaluation period.

We look forward to the opportunity to discuss our capabilities with you personally. Ninyo & Moore appreciates the City’s favorable consideration of our qualifications.

Sincerely,

NINYO & MOORE
Kurt S. Yoshii, PE, GE
Principal Engineer
 [email protected]
 949.753.7070 ext. 12233
 www.ninyoandmoore.com
MLP/klb
Distribution: via upload to PlanetBids

NINYO & MOORE, A SOCOTEC COMPANY
City of Diamond Bar - On-Call Geotechnical Engineering Services | 04-05386 | April 23, 2026 i
Contents

1. Project Team 1

2. Firm's Experience/References 10

3. Project Understanding 13

4. Schedule 16

5. Fee Schedule 17

6. Agreement 18

4. Schedule 20

NINYO & MOORE, A SOCOTEC COMPANY
City of Diamond Bar - On-Call Geotechnical Engineering Services | 04-05386 | April 23, 2026 1 Staffing Capabilities/Technical Competence
Ninyo & Moore recognizes that the success of a project will depend on staff capabilities and effective project management.

Given that necessary technical talent and physical resources are committed to the project, good management becomes the most important item for successful completion of the proposed work. In addition, familiarity with our client’s needs and requirements are critical in successfully performing our services to meet or exceed our client’s expectations. In order to effectively accomplish our goal of successful completion of our services to our client’s satisfaction, our project team will be led and coordinated by our Project Manager, Mr. Matthew Harrel, PG, CEG, QSP/D, QISP, with support from Principalin-Charge Mr. Kurt Yoshii, PE, GE, and Technical Advisors Soumitra Guha, PhD, PE, GE, and Michael Putt PG, CEG. Resumes of key personnel can be found on the following pages.

1. Project Team
Key Personnel Registrations/
Certifications
Total Years
Exp
Years at
Ninyo &
Moore
Kurt Yoshii, PE, GE
Principal-in-Charge
PE 54759 (California); GE 2508 (California)
PE 14274 (Nevada); PE 3791862202 (Utah)
PE 48007 (Colorado)
35 31
Matthew Harrell, PG, CEG, QSP/D, QISP
Project Manager
PG 8412 (California)
CEG 2537 (California)
QSP/D 571
26 9
Soumitra Guha, PhD, PE, GE
Technical Advisor/Geotechnical
Engineering
GE 2632 (California)
PE 58967 (California)
35 24
Michael Putt, PG, CEG
Technical Advisor/Engineering Geology
PG 7581 (California)
CEG 2341 (California)
30 18
Jay Recla, ACI, CALTRANS
Field Operations Manager

ACI, ICC, CALTRANS, FRP,
USDOT Hazmat
30 30

NINYO & MOORE, A SOCOTEC COMPANY
City of Diamond Bar - On-Call Geotechnical Engineering Services | 04-05386 | April 23, 2026 2 Professional Engineering and Environmental Staff
Ninyo & Moore has a large staff of licensed engineers and geologists available to support task order assignments, including multiple, concurrent assignments, from the City. Ninyo & Moore’s geotechnical and environmental project staff brings a wealth of experience and diversity to any project and includes Registered Professional Engineers and Geotechnical Engineers (PE, GE), Professional Geologists, Certified Engineering Geologists, Hydrogeologists, (PG, CEG, CHG), and personnel with other applicable registrations, licenses, and certifications.

Professional
Geotechnical
Engineering/Geologic
Registrations/
Certifications
Total
Years Exp
Years at
Ninyo &
Moore
Ronald Hallum, PG, CEG
Principal Geologist
PG 4766 (California)
CEG 1484 (California)
41 31
Garreth Saiki, PE, GE
Principal Engineer
PE 49665 (California)
GE 2509 (California)
39 27
Michael Rogers, PG, CEG
Principal Geologist
PG 7335 (California)
CEG 2364 (California)
33 15
Greg Corson, PE, CEG
Principal Geologist
CEG 2310 (California)
PG 7318 (California)
31 30
Walter Lopez, PE
Senior Project Engineer
PE 89695 (California) 25 1
Rajindra Handapangoda, PE, GE
Principal Engineer
PE 73171 (California)
GE 2998 (California)
21 19
Madan Chirumalla, PE, GE
Principal Engineer
PE 74186 (California)
GE 3047 (California)
22 15
Bach Tien, PG, CEG
Senior Project Geologist
CEG 2783 (California)
PG 9310 (California)
19 9
Julianne Padgett, PE, GE
Senior Project Engineer
PE 84043 (California)
GE 3235 (California)
16 6
Jonathan Levario, PG
Project Geologist
PG 9879 (California) 9 4
Spencer Marcinek, PE, GE
Principal Engineer
PE 82775 (California)
GE 3127 (California)
14 12
Technical Staff
Companywide 

PROFESSIONAL/

GEOTECHNICAL

ENGINEERS
55 GEOLOGISTS/

ENGINEERING

GEOLOGISTS
41 FIELD

TECHNICIANS/

INSPECTORS
240

1. Project Team

NINYO & MOORE, A SOCOTEC COMPANY
City of Diamond Bar - On-Call Geotechnical Engineering Services | 04-05386 | April 23, 2026 3 Laboratory Technicians, Field Technicians, and Inspectors Ninyo & Moore’s laboratory and field staff is highly experienced and qualified to provide testing and inspection services for an extensive range of project requirements. Ninyo & Moore’s field and laboratory technicians maintain certifications with Caltrans, ACI, ICC, AWS-CWI, DSA, BNSF and OSHA, and possess a working knowledge of the requirements and procedures as specified by these agencies. Below is a sampling of our available field and laboratory technicians that are experienced at providing geotechnical soils and materials testing services and special inspection for construction projects.

Team Member Role Registrations/Certifications Years
Exp
Steven Eck Senior Field Technician ACI, ICC, LADBS, OSHA, USDOT HAZMat 46 Mohammad Haque Senior Field Technician ACI, ICC, LADBS, OSHA, USDOT HAZMat 35 Robert Ritter Special Inspector ACI, AWS, ICC 34
Lincoln Linn Senior Field Technician ACI, ICC, OSHA, USDOT HAZMat 34 Randy Engel Senior Field Technician ACI, BNSF, CALTRANS, USDOT HAZMat 32 Danny Chacon Senior Field Technician ACI, CALTRANS, ICC, USDOT HAZMat 31 Hector Heredia Senior Lab Technician AASHTO, ACI, CALTRANS 27 Vance Hunter Senior Field Technician ACI, CALTRANS, eRailSafe, OSHA, USDOT HAZMat 27 Joe Levario Senior Field Technician ACI, BNSF, CALTRANS, eRailSafe, OSHA, USDOT HAZMat 22 James Dalgity Laboratory Manager ACI, CALTRANS, USDOT HAZMat 21 Matthew Puraty Senior Field Technician ACI, CALTRANS, USDOT HAZMat 21 Matthew Jacobs Senior Field Technician ACI , CALTRANS, OSHA, USDOT HAZMat 20 Ryan Villasenor Senior Field Technician ACI, CALTRANS, ICC, LADBS, FRP, OSHA, USDOT HAZMat 17 Steven Almond Senior Field Technician ACI, CALTRANS, ICC, OSHA, TWIC, USDOT HAZMat 16 Wilkins Cobian Senior Field Technician ACI, CALTRANS, OSHA, USDOT HAZMat 16 Paul Medina Special Inspector ACI, BNSF, CALTRANS, DSA, USDOT HAZMat 13 Kevin Perez Special Inspector ACI, AWS, ICC, LADBS 7

1. Project Team

NINYO & MOORE, A SOCOTEC COMPANY
City of Diamond Bar - On-Call Geotechnical Engineering Services | 04-05386 | April 23, 2026 13  Develop Scope of Work – The initial step in our approach is to meet with the City Project manager in order to get a clear understanding of the project and our expected services. For geotechnical peer review and plan check services, we will discuss the project with the City Project Manager and adhere to an agreed upon schedule for reviewing each submittal. For geotechnical investigations and other monitoring or advisory services, we will develop a detailed scope of work, including the number and type of subsurface explorations, laboratory tests, as well as the type of analyses. We will evaluate various subsurface exploration methods to determine the most cost-effective approach to each project. Our reports will be performed in accordance with the City’s Building and Safety Code, the Grading Manual, the current Engineering Design & Construction Standards, and the current California Building Code. For the materials testing and inspection services, we will review the approved plans and specifications and will develop a detailed scope of services indicating anticipated manhours by discipline for the required materials testing and inspection services. We will submit this plan to the City Project Manager for approval and will provide monthly updates to the City Project Manager as construction progresses.  Project Personnel Utilization – Upon approval of our scope of work, we will assign the appropriately certified personnel to the project based on the specific needs of the project. Our large pool of licensed professional geotechnical engineers, civil engineers, professional geologists and certified engineering geologists will be utilized for our geotechnical peer review services and geotechnical investigations. Our project management approach and in-house computerized data base ensure that we have the appropriately certified personnel assigned during construction. We will also review the contractor’s schedule in order to plan accordingly and anticipate the future inspections and testing requests.

Develop
Work Plan
Mobilize
Team
Sampling
Protocol
Document
Control
Field and
Laboratory
Testing
Utilize
Project
Controls
Establish
Communication Lines
Quality
Assurance
Review
Reporting Project
Closeout
1 2 3 4 5 6 7 8 9
Understanding
Ninyo & Moore understands that the City of Diamond Bar is seeking qualified consultants to provide on‑call geotechnical engineering services to support a broad range of development review, inspection, and public infrastructure needs throughout the City. The City requires responsive, technically sound support to address challenges inherent to its hillside setting, expansive soils, and variable groundwater conditions, including timely geotechnical plan reviews, grading and compaction inspections, geotechnical investigations, and preparation of technical reports and recommendations for both private development and capital improvement projects. We recognize the importance of meeting required turnaround times, supporting fully electronic plan processing, and providing clear, defensible technical guidance that aligns with City standards and regulatory requirements. Ninyo & Moore is fully capable of delivering the full scope of services identified in the RFP, including construction support, monitoring of slopes and infrastructure, and specialized advisory services as needed, ensuring the City maintains public safety, compliance, and long‑term performance of its public and private improvements.

Approach and Methodology
Our approach to on-call service contracts begins with the assignment of a highly qualified and experienced project manager with technical knowledge required for the contract. Our project manager will be the single point-of-contact for the City and will be responsible for contract administration and technical coordination of our staff to perform the required tasks on time and within budget. The overall contract budget and individual task assignment budgets are tracked and maintained and are reported to the client on a monthly basis. Individual task order assignments will be coordinated utilizing our highly experienced staff of licensed civil and geotechnical engineers, registered geologists, certified engineering geologists, hydrogeologists, inspectors, and technicians.

3. Project Understanding

NINYO & MOORE, A SOCOTEC COMPANY
City of Diamond Bar - On-Call Geotechnical Engineering Services | 04-05386 | April 23, 2026 14 3. Project Understanding
 Sampling Protocol and Document Control – We will next establish the sampling protocols required for the project, based on the project specifications and the requirements of the City Building Code, plans, specifications, and other governing regulations. Our document control system provides unique identification of daily reports and laboratory conformance testing for each project assignment. These systems are a part of our Quality Systems Program and will be utilized for each task order assignment.
 Establish Communication Lines – The next step in our approach is to establish the communication lines for the project, including the authorized City representative who will be requesting our services. We will also request the approved distribution list for our inspection reports, daily field reports, and laboratory conformance test results. On past projects, the client’s Project Managers have coordinated our services in the field and distributed our reports. On other past projects, we were scheduled by on-site client’s representative and distributed our reports to the approved distribution list. We will provide our services to meet the City’s needs. Often we will attend pre-construction meetings with the contractor and obtain from the City the approved distribution list for our materials testing and inspection reports as well as our laboratory conformance testing results. We will also provide the City representatives with our personnel’s smart phone numbers as well as email addresses for communication during the project. We will also establish the communication lines between the City’s Project Manager and Inspector, and the contractors’ and sub-contractors’ representatives.  Utilize Our Project Controls – Ninyo & Moore utilizes an internal project control system that includes budget, schedule, and document review and control. Our project manager will utilize our in-house system to keep the City’s Project Manager informed about the status of our services during both our geotechnical investigation phase and for our materials testing and inspection services during construction. We include monthly progress reports indicating the amount billed to date along with a comparison to the overall task order budget and the overall construction schedule. Our quality control includes review of our laboratory conformance test results by a California licensed engineer and geotechnical analysis review by a California licensed Geotechnical Engineer.
 Perform Field and Laboratory Testing – If necessary, and requested by the City, when construction commences, we can provide the necessary personnel and equipment to inspect and test the construction materials quality and contractor’s construction methods in order to document conformance to the project plans and specifications. We will also sample the construction materials as required and perform laboratory conformance tests as specified. The results of our inspections and tests will be forwarded to the City’s representatives at the end of each working day. Immediate notification will be provided via phone, and/or email if we find non-conformance in materials or workmanship. Our local laboratory facilities will perform 100 percent of the soils and materials laboratory work for this contract. They are certified in compliance with ASTM E-329 and are approved/accredited by the City of Los Angeles, Division of the State Architect (DSA), Metropolitan Transportation Authority (Metro), Caltrans, American Association of State Highway and Transportation Officials Materials Reference Laboratory (AASHTO resource, formerly, AMRL) and the Cement and Concrete Reference Laboratory (CCRL).  Quality Assurance Review – We understand the importance of reliability of our inspections and test results. Therefore, we have a Quality Assurance Plan in place that provides written procedures for our services. Our Quality Assurance Plan is overseen by a California licensed engineer and includes review of our training procedures, as well as participation in third party review and inspection of our facilities. All of our laboratory conformance tests are reviewed by a California licensed engineer prior to submittal.
 Reports – Written reports are required for project documentation. We will submit our written reports, including both our geotechnical investigation report and our written reports during construction, as established in the communications structure for the project that was determined during the project initiation stage. Passing tests and inspections will be filed in accordance with the document control system. Non-conforming reports will be maintained in a non-conformance log that will be maintained by our office. Non-conformance areas will need to be remedied in accordance with the project requirements. When non-conforming materials or workmanship are remedied, we will document the acceptance in the non-conformance log for project close-out purposes.
 Project Close-Out – The final step in our approach is the closing out of the project and providing the project documentation, as it relates to materials testing and inspection, to the City.

NINYO & MOORE, A SOCOTEC COMPANY
City of Diamond Bar - On-Call Geotechnical Engineering Services | 04-05386 | April 23, 2026 15 Anticipated Challenges
Given the City of Diamond Bar’s hillside setting, varied geologic conditions, and the need for timely reviews and inspections, several challenges may arise in delivering on‑call geotechnical engineering services.

Challenge Solution
Geologic The first anticipated challenge involves the
City’s complex topography, including expansive
soils, slope instability, and high groundwater
conditions that can impact both private
development and public infrastructure.

To address this, Ninyo & Moore's team will
apply proven geotechnical investigation
methodologies, perform thorough
evaluations, and provide clear and defensible
recommendations tailored to site‑specific
conditions.

Rapid
Response
And Strict
Turnaround
Times
A second challenge relates to the City’s
requirement for rapid response and strict
turnaround times, including 48‑hour inspection
availability and 10‑business‑day plan review
deadlines.

To ensure consistent responsiveness, Ninyo &
Moore maintains dedicated staffing resources,
streamlined internal QA/QC workflows, and
digital tools that support efficient plan review,
reporting, and communication. This allows us to
reliably meet the City’s scheduling needs even
during periods of heightened development or
overlapping task orders.

Electronic Plan
Submittals
Another challenge is the City’s exclusive use of
electronic plan submittals, requiring consultants
to efficiently process digital documents, return
annotated plan checks, and participate in virtual
coordination.

Ninyo & Moore's team is fully equipped with
secure electronic review platforms, standardized
comment templates, and remote collaboration
capabilities to support seamless digital
processing.

Specialized Or
Urgent Services
Additionally, the City may require assistance
with specialized or urgent services, such as
geotechnical monitoring, forensic evaluations, or
support during emergency situations.

Ninyo & Moore is prepared to respond by
leveraging our licensed geotechnical engineers,
engineering geologists, and field technicians who
can mobilize quickly, assess conditions, provide
immediate stabilization recommendations, and
deliver well‑documented technical assessments
as needed.

Through proactive planning,
strong technical expertise, and
efficient communication, Ninyo
& Moore is well‑positioned
to meet these anticipated
challenges while providing
responsive, high‑quality
geotechnical services that
support the City’s development
and infrastructure goals.

3. Project Understanding

Schedule 4.

NINYO & MOORE, A SOCOTEC COMPANY
City of Diamond Bar - On-Call Geotechnical Engineering Services | 04-05386 | April 23, 2026 16 Schedule
Ninyo & Moore recognizes that a major element of project success is the degree to which schedules and budgets are met. Ninyo & Moore has extensive experience in providing expedited geotechnical peer review and plan check services and we will adhere to the City's 10-day turn-around-time for standard plan check services. We will also provide inspection services within 48 hours of receiving the request, or sooner.

Our project manager will be responsible for the overall schedule, quality control, budget control, staff assignments, and client coordination with support from our principal engineer, as-needed, to ensure responsive, quality service is provided to the City. Project management is an ongoing task and our project manager will be committed to this project.

Key elements of our standard approach to managing project schedule include:
• Thoroughly review all documents associated with a project site. • Meet with the City team and any associated stakeholders or consultants to review the project scope and proposed plans to develop a mutual understanding of the necessary tasks, schedule, budget, and impact on other projects and/or adjacent sites. • Clearly communicate the scope of work, schedule, and roles and responsibilities to all team members.
• Implement cost and schedule control monitoring/forecasting procedures using our in-house, cloud-based accounting system, Deltek Vision.
• Tailor quality assurance/quality control (QA/QC) plans to the project. • Conduct regularly scheduled meetings with project team and District.
• Communicate any schedule delays and take immediate corrective action in order to correct the course of the project.

Both written and verbal
communications are keys to
successful contract management.

We will utilize our in-house data
records management systems for file
records. Project-related documents
will be maintained in our files and are
available for the City’s review at any
time.
2 Communication
After reviewing the final scope of
work with the City to clarify the
project, we will prepare a schedule for
our services which will include project
milestone deadlines. This schedule
will be monitored and updated during
project performance and City staff will
be notified as any foreseeable changes
to the schedule may be required along
with a detailed explanation for the
requested schedule change.
1 Schedule
Our efficient in-house scheduling
system allows us to promptly
assign qualified and certified staff
to project tasks. Last-minute schedule
changes are communicated to our
team through individually assigned
smartphones, equipped with email
and text messaging capabilities, and a
voicemail system that alerts both office
and field staff.
3 Response Procedures

4. Schedule

NINYO & MOORE, A SOCOTEC COMPANY
City of Diamond Bar - On-Call Geotechnical Engineering Services | 04-05386 | April 23, 2026 17 5. Fee Proposal
Per the City’s RFP, General Terms & Conditions, No. 13 (Fee Proposal), we are uploading our fee schedule as a separate document.

As described in Section 3 of this proposal, for geotechnical investigations, construction inspection services, and monitoring, evaluation, and advisory services, we will meet with the City's project manager to develop a detailed scope of work including estimated staff types, the estimated staff hours, and the fee. Our estimated hours and fee will be tailored to the individual needs of each project for review by the City.

For land development services including geotechnical peer review services of geotechnical reports, grading plans, and foundation plans, we have provided the tables below that provide the estimated level of effort for standard geotechnical reviews. The estimated hours include review of the initial submittal, review of the 2nd submittal response to comments, and if needed, review of a 3rd submittal. A review comment letter will be issued for each submittal, including a final "approval" letter when all comments have been addressed satisfactorily.

Breakdown of Estimated Hours for Standard Plan Check Reviews Peer Review 1st Submittal
Principal Geologist 5 hours
Principal Engineer 2 hours
Data Processor 1 hour
Total Estimated Hours (1st Submittal) 8 hours
Peer Review 2nd Submittal
Principal Geologist 3 hours
Principal Engineer 1 hour
Data Processor 1 hour
Total Estimated Hours (2nd Submittal) 5 hours
Peer Review 3rd Submittal (if needed)
Principal Geologist 2 hours
Principal Engineer 1 hour
Data Processor 1 hour
Total Estimated Hours (3rd Submittal) 4 hours
Total Estimated Hours 17 Hours
For complex projects such as large commercial and/or residential developments we will perform a cursory review of the submitted documents and provide the City project manager with our estimated level of effort.

NINYO & MOORE, A SOCOTEC COMPANY
City of Diamond Bar - On-Call Geotechnical Engineering Services | 04-05386 | April 23, 2026 18 Ninyo & Moore acknowledges receipt of Attachment 1, the City’s Consultant Services Agreement, and confirms that all terms and conditions contained therein are acceptable. Ninyo & Moore agrees to comply with the Agreement in full and understands that no exceptions or modifications are permitted.

6. Agreement

FAMILIARITY WITH PUBLIC AGENCIES
The Ninyo & Moore Contract Team has extensive knowledge of applicable standards, regulations, codes and guidelines pertaining to geotechnical services in California. All work is performed in accordance with applicable federal, state, and local statutes, regulations, standards and guidelines.

NINYO & MOORE, A SOCOTEC COMPANY
City of Diamond Bar - On-Call Geotechnical Engineering Services | 04-05386 | April 23, 2026 CA16
Schedule of Fees
Hourly Charges for Personnel
Professional Staff
Principal Engineer/Geologist/Environmental Scientist/Certified Industrial Hygienist.............................................. $ 250 Senior Engineer/Geologist/Environmental Scientist ............................................................................................... $ 235 Senior Project Engineer/Geologist/Environmental Scientist................................................................................... $ 220 Project Engineer/Geologist/Environmental Scientist............................................................................................... $ 210 Senior Staff Engineer/Geologist/Environmental Scientist....................................................................................... $ 200 Staff Engineer/Geologist/Environmental Scientist................................................................................................... $ 180 GIS Analyst.............................................................................................................................................................. $ 160 Technical Illustrator/CAD Operator ......................................................................................................................... $ 140 Field Staff
Certified Asbestos/Lead Technician........................................................................................................................ $ 220 Field Operations Manager....................................................................................................................................... $ 150 Nondestructive Examination Technician (UT, MT, LP)........................................................................................... $ 145 Supervisory Technician ........................................................................................................................................... $ 140 Special Inspector (Concrete, Masonry, Structural Steel, Welding, and Fireproofing)............................................ $ 135 Senior Technician.................................................................................................................................................... $ 135 Technician................................................................................................................................................................ $ 130 Administrative Staff
Information Specialist .............................................................................................................................................. $ 120 Geotechnical/Environmental/Laboratory Assistant ................................................................................................. $ 120 Data Processor........................................................................................................................................................ $ 95 Other Charges
Concrete Coring Equipment (includes technician).............................................................................................. $ 190/hr Anchor Load Test Equipment (includes technician) ........................................................................................... $ 190/hr GPR Equipment................................................................................................................................................... $ 180/hr Inclinometer ......................................................................................................................................................... $ 100/hr Hand Auger Equipment....................................................................................................................................... $ 80/hr Rebar Locator (Pachometer)............................................................................................................................... $ 25/hr Vapor Emission Kit .............................................................................................................................................. $ 65/kit Nuclear Density Gauge ....................................................................................................................................... $ 15/hr X-Ray Fluorescence............................................................................................................................................ $ 70/hr PID/FID................................................................................................................................................................ $ 25/hr Air Sampling Pump.............................................................................................................................................. $ 10/hr Field Vehicle ........................................................................................................................................................ $ 15/hr Equipment $ 15/hr
Expert Witness Testimony................................................................................................................................... $ 450/hr Direct Expenses .................................................................................................................................... Cost plus 15 % Special equipment charges will be provided upon request.

Notes
Technicians and special inspectors, are charged at a 4-hour minimum, and 8-hour minimum for hours exceeding 4 hours.

Overtime rates at 1.5 times the regular rates will be charged for work performed in excess of 8 hours in one day Monday through Friday and all day on Saturday. Rates at twice the regular rates will be charged for all work in excess of 12 hours in one day, all day Sunday and on holidays.

Our rates will be adjusted in conjunction with the increase in the Prevailing Wage Determination during the life of the project, as applicable.

The terms and conditions are included in Ninyo & Moore’s Work Authorization and Agreement form.

Fee Proposal

NINYO & MOORE, A SOCOTEC COMPANY
City of Diamond Bar - On-Call Geotechnical Engineering Services | 04-05386 | April 23, 2026 |
Schedule of Fees for Laboratory Testing

SOILS CONCRETE
Atterberg Limits, D 4318, CT 204..............................................................$ 170 Compression Tests, 6x12 Cylinder, C 39 ...................................................$ 35 California Bearing Ratio (CBR), D 1883....................................................$ 550 Concrete Mix Design Review, Job Spec.....................................................$ 300 Chloride and Sulfate Content, CT 417 & CT 422 .....................................$ 175 Concrete Mix Design, per Trial Batch, 6 cylinder, ACI...............................$ 850 Consolidation, D 2435, CT 219..................................................................$ 300 Concrete Cores, Compression (excludes sampling), C 42 .......................$ 120 Consolidation, Hydro-Collapse only, D 2435............................................$ 150 Drying Shrinkage, C 157..............................................................................$ 400 Consolidation – Time Rate, D 2435, CT 219............................................$ 200 Flexural Test, C 78 .......................................................................................$ 85 Direct Shear – Remolded, D 3080 ............................................................$ 350 Flexural Test, C 293.....................................................................................$ 85 Direct Shear – Undisturbed, D 3080 .........................................................$ 300 Flexural Test, CT 523...................................................................................$ 95 Durability Index, CT 229.............................................................................$ 175 Gunite/Shotcrete, Panels, 3 cut cores per panel and test, ACI................$ 275 Expansion Index, D 4829, IBC 18-3..........................................................$ 190 Lightweight Concrete Fill, Compression, C 495 .........................................$ 80 Expansion Potential (Method A), D 4546..................................................$ 170 Petrographic Analysis, C 856 ......................................................................$ 2,000 Geofabric Tensile and Elongation Test, D 4632.......................................$ 200 Restrained Expansion of Shrinkage Compensation ..................................$ 450 Hydraulic Conductivity, D 5084..................................................................$ 350 Splitting Tensile Strength, C 496.................................................................$ 100 Hydrometer Analysis, D 6913, CT 203......................................................$ 220 3x6 Grout, (CLSM), C 39 .............................................................................$ 55 Moisture, Ash, & Organic Matter of Peat/Organic Soils...........................$ 120 2x2x2 Non-Shrink Grout, C 109 .................................................................$ 55 Moisture Only, D 2216, CT 226.................................................................$ 35 Moisture and Density, D 2937 ...................................................................$ 45 ASPHALT Permeability, CH, D 2434, CT 220............................................................$ 300 Air Voids, T 269 ............................................................................................$ 85 pH and Resistivity, CT 643.........................................................................$ 175 Asphalt Mix Design, Caltrans (incl. Aggregate Quality).............................$ 4,500 Proctor Density D1557, D 698, CT 216, AASHTO T-180........................$ 220 Asphalt Mix Design Review, Job Spec .......................................................$ 180 Proctor Density with Rock Correction D 1557 ..........................................$ 340 Dust Proportioning, CT LP-4........................................................................$ 85 R-value, D 2844, CT 301 ...........................................................................$ 375 Extraction, % Asphalt, including Gradation, D 2172, CT 382....................$ 250 Sand Equivalent, D 2419, CT 217.............................................................$ 125 Extraction, % Asphalt without Gradation, D 2172, CT 382........................$ 150 Sieve Analysis, D 6913, CT 202................................................................$ 145 Film Stripping, CT 302..................................................................................$ 120 Sieve Analysis, 200 Wash, D 1140, CT 202.............................................$ 100 Hveem Stability and Unit Weight D 1560, T 246, CT 366 .........................$ 225 Specific Gravity, D 854...............................................................................$ 125 Marshall Stability, Flow and Unit Weight, T 245.........................................$ 240 Thermal Resistivity (ASTM 5334, IEEE 442)............................................$ 925 Maximum Theoretical Unit Weight, D 2041, CT 309..................................$ 150 Triaxial Shear, C.D, D 4767, T 297 ...........................................................$ 550 Moisture Content, CT 370............................................................................$ 95 Triaxial Shear, C.U., w/pore pressure, D 4767, T 2297 per pt ................$ 450 Moisture Susceptibility and Tensile Stress Ratio, T 238, CT 371 .............$ 1,000 Triaxial Shear, C.U., w/o pore pressure, D 4767, T 2297 per pt ........................$ 350 Slurry Wet Track Abrasion, D 3910.............................................................$ 150 Triaxial Shear, U.U., D 2850......................................................................$ 250 Superpave, Asphalt Mix Verification (incl. Aggregate Quality)..................$ 4,900 Unconfined Compression, D 2166, T 208.................................................$ 180 Superpave, Gyratory Unit Wt., T 312..........................................................$ 100 Superpave, Hamburg Wheel, 20,000 passes, T 324.................................$ 1,000 MASONRY Unit Weight sample or core, D 2726, CT 308.............................................$ 100 Brick Absorption, 24-hour submersion, 5-hr boiling, 7-day, C 67............$ 70 Voids in Mineral Aggregate, (VMA) CT LP-2..............................................$ 90 Brick Compression Test, C 67...................................................................$ 55 Voids filled with Asphalt, (VFA) CT LP-3 ....................................................$ 90 Brick Efflorescence, C 67...........................................................................$ 55 Wax Density, D 1188................................................................................... $ 140 Brick Modulus of Rupture, C 67.................................................................$ 50 Brick Moisture as received, C 67...............................................................$ 45 AGGREGATES Brick Saturation Coefficient, C 67..............................................................$ 60 Clay Lumps and Friable Particles, C 142....................................................$ 180 Concrete Block Compression Test, 8x8x16, C 140 .................................$ 70 Cleanness Value, CT 227............................................................................$ 180 Concrete Block Conformance Package, C 90..........................................$ 500 Crushed Particles, CT 205...........................................................................$ 175 Concrete Block Linear Shrinkage, C 426..................................................$ 200 Durability, Coarse or Fine, CT 229..............................................................$ 205 Concrete Block Unit Weight and Absorption, C 140 ................................$ 70 Fine Aggregate Angularity, ASTM C 1252, T 304, CT 234 .......................$ 180 Cores, Compression or Shear Bond, CA Code........................................$ 70 Flat and Elongated Particle, D 4791............................................................$ 220 Masonry Grout, 3x3x6 prism compression, C 39.....................................$ 45 Lightweight Particles, C 123 ........................................................................$ 180 Masonry Mortar, 2x4 cylinder compression, C 109..................................$ 35 Los Angeles Abrasion, C 131 or C 535.......................................................$ 200 Masonry Prism, half size, compression, C 1019 ......................................$ 120 Material Finer than No. 200 Sieve by Washing, C 117..............................$ 90 Masonry Prism, Full size, compression, C 1019 ......................................$ 200 Organic Impurities, C 40 ..............................................................................$ 90 Potential Alkali Reactivity, Mortar Bar Method, Coarse, C 1260...............$ 1,250 REINFORCING AND STRUCTURAL STEEL Potential Alkali Reactivity, Mortar Bar Method, Fine, C 1260....................$ 950 Chemical Analysis, A 36, A 615.................................................................$ 135 Potential Reactivity of Aggregate (Chemical Method), C 289...................$ 475 Fireproofing Density Test, UBC 7-6...........................................................$ 90 Sand Equivalent, T 176, CT 217 .................................................................$ 125 Hardness Test, Rockwell, A 370 ...............................................................$ 80 Sieve Analysis, Coarse Aggregate, T 27, C 136........................................$ 120 High Strength Bolt, Nut & Washer Conformance, Sieve Analysis, Fine Aggregate (including wash), T 27, C 136.................$ 145 per assembly, A 325 .............................................................................$ 150 Sodium Sulfate Soundness, C 88 ...............................................................$ 450 Mechanically Spliced Reinforcing Tensile Test, ACI................................$ 175 Specific Gravity and Absorption, Coarse, C 127, CT 206 .........................$ 115 Pre-Stress Strand (7 wire), A 416..............................................................$ 170 Specific Gravity and Absorption, Fine, C 128, CT 207 ..............................$ 175 Reinforcing Tensile or Bend up to No. 11, A 615 & A 706......................$ 75 Structural Steel Tensile Test: Up to 200,000 lbs., A 370 .........................$ 90 ROOFING Welded Reinforcing Tensile Test: Up to No. 11 bars, ACI.......................$ 80 Roofing Tile Absorption, (set of 5), C 67.....................................................$ 250 Roofing Tile Strength Test, (set of 5), C 67 ................................................$ 250 Special preparation of standard test specimens will be charged at the technician’s hourly rate.

Ninyo & Moore is accredited to perform the AASHTO equivalent of many ASTM test procedures.

Fee Proposal

1 CONSULTANT SERVICES AGREEMENT
THIS AGREEMENT (the "Agreement") is made as of June 16, 2026 by and between the City of Diamond Bar, a municipal corporation ("City") and Converse Consultants., a California corporation ("Consultant").

1. Consultant's Services.

Subject to the terms and conditions set forth in this Agreement Consultant shall provide to the reasonable satisfaction of the City the Traffic and Transportation Engineering services set forth in the attached Exhibit "A", which is incorporated herein by this reference. As a material inducement to the City to enter into this Agreement, Consultant represents and warrants that it has thoroughly investigated the work and fully understands the difficulties and restrictions in performing the work. Consultant represents that it is fully qualified to perform such consulting services by virtue of its experience and the training, education and expertise of its principals and employees.

Vivian Chen, Associate Engineer (herein referred to as the “City’s Project Manager”), shall be the person to whom the Consultant will report for the performance of services hereunder. It is understood that Consultant shall coordinate its services hereunder with the City’s Project Manager to the extent required by the City’s Project Manager, and that all performances required hereunder by Consultant shall be performed to the satisfaction of the City’s Project Manager and the City Manager

2. Term of Agreement. This Agreement shall take effect July 1, 2026, and shall continue until June 30, 2029 unless earlier terminated pursuant to the provisions herein.

The City shall have the option to extend this Agreement for one (1) additional two (2) year term, subject to the same terms and conditions contained herein, by giving Consultant written notice of the exercise of this option at least thirty (30) days prior to the expiration of the initial Term. In the event the City exercises its option to extend the Term, Consultant's compensation shall be subject to an adjustment upon the effective date of extension as follows:

Consultant’s rates shall be fixed during the initial Term of this Agreement. Rate increases in compensation will be only considered in the event the City exercises its option to extend the Agreement and apply as of July 1, 2029. Any rate increase will be negotiated between the City and the Consultant, but in no event shall the increase exceed the amount that the Consumer Price Index ("CPI") for the Los AngelesAnaheim-Riverside metropolitan area for the month immediately preceding the Adjustment Date (the "Index Month") as reported by the Bureau of Labor Statistics of the United States Department of Labor, has increased over the CPI for the month one year prior to the Index Month.

2 3. Compensation. City agrees to compensate Consultant for each service which Consultant performs to the satisfaction of City in compliance with the scope of services set forth in Exhibit "A". Payment will be made only after submission of proper invoices in the form specified by City. Total payment to Consultant pursuant to this Agreement shall not exceed One Hundred Thousand Dollars and Zero Cents ($100,000.00) per Fiscal Year without the prior written consent of the City. The above not-to-exceed amount shall include all costs, including but not limited to, all clerical, administrative, overhead, telephone, travel and all related expenses.

4. Payment.

A. Consultant shall submit to City an invoice for the services completed, authorized expenses and authorized extra work actually performed or incurred.

B. All such invoices shall state the basis for the amount invoiced, including services completed, the number of hours spent and any extra work performed.

C. Payment will be made only after submission of proper invoices.

D. City will pay Consultant the amount property invoiced within 35 days of receipt.

5. Change Orders. No payment for extra services caused by a change in the scope or complexity of work, or for any other reason, shall be made unless and until such extra services and a price therefore have been previously authorized in writing and approved by the City Manager or his designee as an amendment to this Agreement.

The amendment shall set forth the changes of work, extension of time, if any, and adjustment of the fee to be paid by City to Consultant.

6. Priority of Documents. In the event of any inconsistency between the provisions of this Agreement and any attached exhibits, the provisions of this Agreement shall control.

7. Status as Independent Contractor.

A. Consultant is, and shall at all times remain as to City, a wholly independent contractor. Consultant shall have no power to incur any debt, obligation, or liability on behalf of City or otherwise act on behalf of City as an agent, except as specifically provided herein. Neither City nor any of its agents shall have control over the conduct of Consultant or any of Consultant's employees, except as set forth in this Agreement. Consultant shall not, at any time, or in any manner, represent that it or any of its agents or employees are in any manner employees of City.

B. Consultant agrees to pay all required taxes on amounts paid to Consultant under this Agreement, and to indemnify and hold City harmless from any and all taxes, assessments, penalties, and interest asserted against City by reason of the independent contractor relationship created by this Agreement. In the event that City is

3 audited by any Federal or State agency regarding the independent contractor status of Consultant and the audit in any way fails to sustain the validity of a wholly independent contractor relationship between City and Consultant, then Consultant agrees to reimburse City for all costs, including accounting and attorney's fees, arising out of such audit and any appeals relating thereto.

C. Consultant shall fully comply with Workers' Compensation laws regarding Consultant and Consultant's employees. Consultant further agrees to indemnify and hold City harmless from any failure of Consultant to comply with applicable Worker's Compensation laws.

D. Consultant shall, at Consultant’s sole cost and expense, fully secure and comply with all federal, state and local governmental permit or licensing requirements, including but not limited to the City of Diamond Bar, South Coast Air Quality Management District, and California Air Resources Board.

E. In addition to any other remedies it may have, City shall have the right to offset against the amount of any fees due to Consultant under this Agreement any amount due to City from Consultant as a result of Consultant's failure to promptly pay to City any reimbursement or indemnification required by this Agreement or for any amount or penalty levied against the City for Consultant’s failure to comply with this Section.

8. Standard of Performance. Consultant shall perform all work at the standard of care and skill ordinarily exercised by members of the profession under similar conditions and represents that it and any subcontractors it may engage, possess any and all licenses which are required to perform the work contemplated by this Agreement and shall maintain all appropriate licenses during the performance of the work.

9. Indemnification.

To the maximum extent permitted by Civil Code section2782.8, Consultant shall indemnify, defend with counsel approved by City, and hold harmless City, its officers, officials, employees and volunteers ("Indemnitees") from and against all liability, loss, damage, expense, cost (including without limitation reasonable attorneys' fees, expert fees and all other costs and fees of litigation) of every nature arising out of or in connection with:
(1) Any and all claims under Workers’ Compensation Act and other employee benefit acts with respect to Consultant’s employees or Consultant’s contractor’s employees arising out of Consultant’s work under this Agreement; and (2) Any and all claims arising out of Consultant's performance of work hereunder or its failure to comply with any of its obligations contained in this Agreement, regardless of City’s passive negligence, but excepting such loss or damage which is caused by the sole active negligence or willful misconduct of the City. Should City in its

4 sole discretion find Consultant’s legal counsel unacceptable, then Consultant shall reimburse the City its costs of defense, including without limitation reasonable attorneys' fees, expert fees and all other costs and fees of litigation. The Consultant shall promptly pay any final judgment rendered against the Indemnitees. It is expressly understood and agreed that the foregoing provisions are intended to be as broad and inclusive as is permitted by the law of the State of California and will survive termination of this Agreement. Except for the Indemnitees, this Agreement shall not be construed to extend to any third-party indemnification rights of any kind. (3) Any and all claims for loss, injury to or death of persons or damage to property caused by the negligent professional act or omission in the performance of professional services pursuant to this Agreement.
(4) The Consultant’s obligations to indemnify, defend and hold harmless the City shall survive termination of this Agreement.

10. Insurance.

A. Consultant shall at all times during the term of this Agreement carry, maintain, and keep in full force and effect, with an insurance company authorized to do business in the State of California and approved by the City the following insurance:
(1) A policy or policies of broad-form comprehensive general liability insurance written on an occurrence basis with minimum limits of $1,000,000.00 combined single limit coverage against any injury, death, loss or damage as a result of wrongful or negligent acts by Consultant, its officers, employees, agents, and independent contractors in performance of services under this Agreement; (2) Property damage insurance with a minimum limit of $500,000.00 per occurrence;
(3) Automotive liability insurance written on an occurrence basis covering all owned, non-owned and hired automobiles, with minimum combined single limits coverage of $1,000,000.00;
(4) Worker's Compensation insurance when required by law, with a minimum limit of $500,000.00 or the amount required by law, whichever is greater; and
(5) Professional liability insurance covering errors and omissions arising out of the performance of this Agreement with a combined single limit of $1,000,000. If such insurance is on a claims made basis, Consultant agrees to keep such insurance in full force and effect for at least five years after termination or date of completion of this Agreement.

5 B. The City, its officers, employees, agents, and volunteers shall be named as additional insureds on the policies as to comprehensive general liability, property damage, and automotive liability. The policies as to comprehensive general liability, property damage, and automobile liability shall provide that they are primary, and that any insurance maintained by the City shall be excess insurance only.

C. All insurance policies shall provide that the insurance coverage shall not be non-renewed, canceled, reduced, or otherwise modified (except through the addition of additional insureds to the policy) by the insurance carrier without the insurance carrier giving City at least ten (10) days prior written notice thereof. Consultant agrees that it will not cancel, reduce or otherwise modify the insurance coverage and in the event of any of the same by the insurer to immediately notify the City.

D. All policies of insurance shall cover the obligations of Consultant pursuant to the terms of this Agreement and shall be issued by an insurance company which is authorized to do business in the State of California or which is approved in writing by the City; and shall be placed have a current A.M. Best's rating of no less than A-, VII. In the case of professional liability insurance, such coverage shall be issued by companies either licensed or admitted to conduct business in the State of California as long as such insurers possess the aforementioned Best’s rating.

E. Consultant shall submit to City (1) insurance certificates indicating compliance with the minimum insurance requirements above, and (2) insurance policy endorsements or a copy of the insurance policy evidencing the additional insured requirements in this Agreement, in a form acceptable to the City.

F. Self-Insured Retention/Deductibles. All policies required by this Agreement shall allow City, as additional insured, to satisfy the self-insured retention (“SIR”) and/or deductible of the policy in lieu of the Consultant (as the named insured) should Consultant fail to pay the SIR or deductible requirements. The amount of the SIR or deductible shall be subject to the approval of the City. Consultant understands and agrees that satisfaction of this requirement is an express condition precedent to the effectiveness of this Agreement. Failure by Consultant as primary insured to pay its SIR or deductible constitutes a material breach of this Agreement. Should City pay the SIR or deductible on Consultant’s due to such failure in order to secure defense and indemnification as an additional insured under the policy, City may include such amounts as damages in any action against Consultant for breach of this Agreement in addition to any other damages incurred by City due to the breach.

G. Subrogation. With respect to any Workers' Compensation Insurance or Employer's Liability Insurance, the insurer shall waive all rights of subrogation and contribution it may have against the Indemnitees.

H. Failure to Maintain Insurance. If Consultant fails to keep the insurance required under this Agreement in full force and effect, City may take out the necessary insurance and any premiums paid, plus 10% administrative overhead, shall be paid by Consultant, which amounts may be deducted from any payments due Consultant.

6 I. Consultant shall include all subcontractors, if any, as insureds under its policies or shall furnish separate certificates and endorsements for each subcontractor to the City for review and approval. All insurance for subcontractors shall be subject to all of the requirements stated herein.

11. Confidentiality. Consultant in the course of its duties may have access to confidential data of City, private individuals, or employees of the City. Consultant covenants that all data, documents, discussion, or other information developed or received by Consultant or provided for performance of this Agreement are deemed confidential and shall not be disclosed by Consultant without written authorization by City. City shall grant such authorization if disclosure is required by law. All City data shall be returned to City upon the termination of this Agreement. Consultant's covenant under this section shall survive the termination of this Agreement. Notwithstanding the foregoing, to the extent Consultant prepares reports of a proprietary nature specifically for and in connection with certain projects, the City shall not, except with Consultant's prior written consent, use the same for other unrelated projects.

12. Ownership of Materials. Except as specifically provided in this Agreement, all materials provided by Consultant in the performance of this Agreement shall be and remain the property of City without restriction or limitation upon its use or dissemination by City. Consultant may, however, make and retain such copies of said documents and materials as Consultant may desire.

13. Maintenance and Inspection of Records. In accordance with generally accepted accounting principles, Consultant and its subcontractors shall maintain reasonably full and complete books, documents, papers, accounting records, and other information (collectively, the “records”) pertaining to the costs of and completion of services performed under this Agreement. The City and any of their authorized representatives shall have access to and the right to audit and reproduce any of Consultant's records regarding the services provided under this Agreement. Consultant shall maintain all such records for a period of at least three (3) years after termination or completion of this Agreement. Consultant agrees to make available all such records for inspection or audit at its offices during normal business hours and upon three (3) days' notice from the City, and copies thereof shall be furnished if requested.

14. Conflict of Interest.

A. Consultant covenants that it presently has no interest and shall not acquire any interest, direct or indirect, which may be affected by the services to be performed by Consultant under this Agreement, or which would conflict in any manner with the performance of its services hereunder. Consultant further covenants that, in performance of this Agreement, no person having any such interest shall be employed by it. Furthermore, Consultant shall avoid the appearance of having any interest which would conflict in any manner with the performance of its services pursuant to this Agreement.

7 B. Consultant covenants not to give or receive any compensation, monetary or otherwise, to or from the ultimate vendor(s) of hardware or software to City as a result of the performance of this Agreement. Consultant's covenant under this section shall survive the termination of this Agreement.

15. Termination. The City may terminate this Agreement with or without cause upon thirty (30) days' written notice to Consultant. The effective date of termination shall be upon the date specified in the notice of termination, or, in the event no date is specified, upon the thirtieth (30th) day following delivery of the notice. In the event of such termination, City agrees to pay Consultant for services satisfactorily rendered prior to the effective date of termination. Immediately upon receiving written notice of termination, Consultant shall discontinue performing services, unless the notice provides otherwise, except those services reasonably necessary to effectuate the termination. The City shall be not liable for any claim of lost profits.

16. Personnel/Designated Person. Consultant represents that it has, or will secure at its own expense, all personnel required to perform the services under this Agreement. All of the services required under this Agreement will be performed by Consultant or under it supervision, and all personnel engaged in the work shall be qualified to perform such services. Except as otherwise authorized by the City’s Project Manager, Consultant reserves the right to determine the assignment of its own employees to the performance of Consultant’s services under this Agreement, but City reserves the right in its sole discretion to required Consultant to exclude any employee from performing services on City’s premises.

17. Non-Discrimination and Equal Employment Opportunity.

A. Consultant shall not discriminate as to race, color, creed, religion, sex, marital status, national origin, ancestry, age, physical or mental handicap, medical condition, or sexual orientation, in the performance of its services and duties pursuant to this Agreement, and will comply with all rules and regulations of City relating thereto.

Such nondiscrimination shall include but not be limited to the following: employment, upgrading, demotion, transfers, recruitment or recruitment advertising; layoff or termination; rates of pay or other forms of compensation; and selection for training, including apprenticeship.

B. Consultant will, in all solicitations or advertisements for employees placed by or on behalf of Consultant state either that it is an equal opportunity employer or that all qualified applicants will receive consideration for employment without regard to race, color, creed, religion, sex, marital status, national origin, ancestry, age, physical or mental handicap, medical condition, or sexual orientation.

C. Consultant will cause the foregoing provisions to be inserted in all subcontracts for any work covered by this Agreement except contracts or subcontracts for standard commercial supplies or raw materials.

18. Reserved

8 19. Time Is of the Essence. Time is of the essence in this Agreement.

Consultant shall do all things necessary and incidental to the prosecution of Consultant's work.

20. Delays and Extensions of Time. Consultant's sole remedy for delays outside its control shall be an extension of time. No matter what the cause of the delay, Consultant must document any delay and request an extension of time in writing at the time of the delay to the satisfaction of City. Any extensions granted shall be limited to the length of the delay outside Consultant’s control. If Consultant believes that delays caused by the City will cause it to incur additional costs, it must specify, in writing, why the delay has caused additional costs to be incurred and the exact amount of such cost within 10 days of the time the delay occurs. No additional costs can be paid that exceed the not to exceed amount absent a written amendment to this Agreement. In no event shall the Consultant be entitled to any claim for lost profits due to any delay, whether caused by the City or due to some other cause.

21. Assignment. Consultant shall not assign or transfer any interest in this Agreement nor the performance of any of Consultant's obligations hereunder, without the prior written consent of City, and any attempt by Consultant to so assign this Agreement or any rights, duties, or obligations arising hereunder shall be void and of no effect.

22. Compliance with Laws. Consultant shall comply with all applicable laws, ordinances, codes and regulations of the federal, state, and local governments.

23. Non-Waiver of Terms, Rights and Remedies. Waiver by either party of any one or more of the conditions of performance under this Agreement shall not be a waiver of any other condition of performance under this Agreement. In no event shall the making by City of any payment to Consultant constitute or be construed as a waiver by City of any breach of covenant, or any default which may then exist on the part of Consultant, and the making of any such payment by City shall in no way impair or prejudice any right or remedy available to City with regard to such breach or default.

24. Attorney’s Fees. In the event that either party to this Agreement shall commence any legal or equitable action or proceeding to enforce interpret the provisions of this Agreement, the prevailing party in such action or proceeding shall be entitled to recover its costs of suit, including reasonable attorney’s fees and costs, including costs of expert witnesses and consultants.

25. Mediation. Any dispute or controversy arising under this Agreement, or in connection with any of the terms and conditions hereof, which cannot be resolved by the parties, may be referred by the parties hereto for mediation. A third party, neutral mediation service shall be selected, as agreed upon by the parties and the costs and expenses thereof shall be borne equally by the parties hereto. The parties agree to utilize their good faith efforts to resolve any such dispute or controversy so submitted to mediation. It is specifically understood and agreed by the parties hereto that mutual

9 good faith efforts to resolve the same any dispute or controversy as provided herein, shall be a condition precedent to the institution of any action or proceeding, whether at law or in equity with respect to any such dispute or controversy.

26. Notices. Any notices, bills, invoices, or reports required by this Agreement shall be deemed received on (a) the day of delivery if delivered by hand during regular business hours or by facsimile before or during regular business hours; or (b) on the third business day following deposit in the United States mail, postage prepaid, to the addresses heretofore set forth in the Agreement, or to such other addresses as the parties may, from time to time, designate in writing pursuant to the provisions of this section.
“CONSULTANT” “CITY”
Converse Consultants City of Diamond Bar
717 S. Myrtle Ave 21810 Copley Drive
Monrovia, CA 91016 Diamond Bar, CA 91765-4178
Attn.: Siva K Sivathasan, PE, GE Attn.: Daniel Fox, City Manager Phone: 626-930-1275 Phone: (909) 839-7010
E-mail: [email protected] E-mail: [email protected]

27. Governing Law. This Agreement shall be interpreted, construed and enforced in accordance with the laws of the State of California.

28. Counterparts. This Agreement may be executed in any number of counterparts, each of which shall be deemed to be the original, and all of which together shall constitute one and the same instrument.

29. Entire Agreement. This Agreement, and any other documents incorporated herein by reference, represent the entire and integrated agreement between Consultant and City. This Agreement supersedes all prior oral or written negotiations, representations or agreements. This Agreement may not be amended, nor any provision or breach hereof waived, except in a writing signed by the parties which expressly refers to this Agreement. Amendments on behalf of the City will only be valid if signed by a person duly authorized to do so under the City's Purchasing Ordinance.

IN WITNESS of this Agreement, the parties have executed this Agreement as of the date first written above.

10 "Consultant" "City"

CITY OF DIAMOND BAR
By: ______ By:

Printed Name________________ Dan Fox, City Manager
Title: ___________________________
By: ATTEST:

Printed Name:

Title:

Kristina Santana, City Clerk
Approved as to form:

By:

Omar Sandoval, City Attorney
*NOTE:If Consultant is a corporation, the City requires the following signature(s):
-- (1) the Chairman of the Board, the President or a Vice-President, AND (2) the Secretary, the Chief Financial Officer, the Treasurer, an Assistant Secretary or an Assistant Treasurer. If only one corporate officer exists or one corporate officer holds more than one corporate office, please so indicate. OR
-- The corporate officer named in a corporate resolution as authorized to enter into this Agreement. A copy of the corporate resolution, certified by the Secretary close in time to the execution of the Agreement, must be provided to the City.

PROPOSAL/STATEMENT OF QUALIFICATIONS

TO PROVIDE PROFESSIONAL ON-CALL GEOTECHNICAL ENGINEERING SERVICES

DIAMOND BAR, CALIFORNIA
CONVERSE PROJECT NO. 26-31-159-00
Presented To:

CITY OF DIAMOND BAR
Mr. Hal Ghafari, P.E.

Public Works Manager/
Assistant City Engineer
21810 Copley Drive
Diamond Bar, CA 91765
Presented By:

CONVERSE CONSULTANTS
Siva K. Sivathasan, PhD, PE, GE
717 S. Myrtle Avenue
Monrovia, CA 91016
626-930-1275
April 23, 2026

1/2

DEPARTMENT OF PUBLIC WORKS

REQUEST FOR PROPOSALS

ON-CALL GEOTECHNICAL ENGINEERING SERVICES
ADDENDUM NO. 1
The following changes to the Request for Proposal for the above project shall be incorporated into the Request for Proposal as part of this project.

The Consultant shall sign this page as acknowledgement of receipt of Addendum No. 1 and attach it to the proposal.

David G. Liu, P.E. Date
Director of Public Works/City Engineer
Consultant’s Authorized Signature
4/15/26

Converse Consultants
Geotechnical Engineering & Consulting, Environmental & Groundwater Science, Materials Testing & Inspection Services
717 South Myrtle Avenue / Monrovia, California 91016
Telephone: (626) 930-1275 ♦ Facsimile: (626) 930-1212 ♦ www.converseconsultants.com April 23, 2026
Mr. Hal Ghafari, PE
Public Works Manager/Assistant City Engineer
City of Diamond Bar
Department of Public Works
21810 Copley Drive
Diamond Bar, CA 91765
Subject: PROPOSAL TO PROVIDE ON-CALL GEOTECHNICAL ENGINEERING SERVICES City of Diamond Bar, Los Angeles County, California
Converse Project No. 26-31-159-00
Dear Mr. Ghafari:

THE CONVERSE PROFESSIONAL GROUP, dba Converse Consultants (Converse), appreciates the opportunity to submit our proposal to provide on-call geotechnical engineering services for the City of Diamond Bar (City). In preparation for this proposal, we have reviewed the Request for Proposal (RFP) issued on March 17, 2026, and Addendum 1, issued April 15, 2026.

Converse is familiar with the geotechnical challenges faced by the City, including expansive soils, challenging topography, and high groundwater tables. We have a long history of working in Pomona and Walnut and can apply the knowledge we have gained to projects you have.

We are also aware of other challenges, such as addressing potential issues related to aging infrastructure, and will do what we can to help the City address or mitigate those concerns.

Converse has provided consulting services to public municipalities and private agencies in Southern California for over 80 years. Our services include geotechnical engineering, engineering geology, groundwater sciences, soils and materials testing and inspection, and environmental sciences. Our professional and technical staff of in-house geotechnical engineers, engineering geologists, deputy inspectors, laboratory and field technicians, environmental scientists, drafting/CAD specialists, and other specialized support personnel are dedicated to developing long-term relationships through responsive and quality service.

Our collective experience not only means savings for our clients, but assurance of our ability to verify all deliverables are submitted on schedule and within budget. Converse has two full-service in-house laboratories where we can perform all geotechnical testing that may be required for your projects. Our laboratory is approved by various certifying agencies, including Caltrans and American Association of State Highway and Transportation Officials, and is supervised by a registered geotechnical engineer to ensure quality control. Additionally, in order to maintain our accreditations, we participate in yearly proficiency sample testing for various materials such as aggregate, concrete, masonry, reinforcing steel, and soil. All laboratory equipment is calibrated regularly, and our laboratory services are available 24 hours a day, seven days a week.

Proposal to Provide On-Call Geotechnical Engineering Services City of Diamond Bar
Los Angeles County, California
April 23, 2026

Converse Consultants
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The Converse team prioritizes quality, safety, and compliance while fostering a positive and collaborative relationship between all stakeholders on the project. Key aspects of the project will include on-site continuous inspection, proper certification, and adherence to ethical principles.

We agree to all General Contract Provisions, terms, and conditions, up to and including Attachment 1 (the City’s Consultant Services Agreement).

We look forward to working with you. Please feel free to contact the undersigned at 626-930-1275 if you have any questions or need additional information.

Sincerely,

CONVERSE CONSULTANTS
Siva K. Sivathasan, PhD, PE, GE, DGE, QSD, F. ASCE
President / Principal Engineer
Encl: Proposal
SKS:ed

Proposal to Provide On-Call Geotechnical Engineering Services City of Diamond Bar
Los Angeles County, California
April 23, 2026

Converse Consultants
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1. Project Team
Converse has the staff and technical expertise to perform the scope of work for the City’s on-call projects. Our field personnel will have all appropriate certifications and experience for the tasks they are performing. An organization chart of the staff available to provide services for this procurement is provided below.

Converse is aware that it is the City’s preference to have key personnel identified in the Organizational Chart to remain during the term of the agreement, and we are in agreement with the restrictions to changes in key personnel. After contract execution, Converse will not substitute key personnel (project manager and others listed by name in the cost proposal) or subconsultants without prior written approval from the City. We will request and justify the need for the substitution and obtain approval from the City prior to use of a different subconsultant on the contract. The proposed substituted team member will be as qualified as the original, and at the same or lower cost. For engineering types of Converse contracts, Converse’s project manager is a registered engineer in the State of California.

Organizational Chart
QA/QC
Hashmi Quazi, PhD, PE, GE
Principal Engineer/
Project Manager
Siva Sivathasan, PE, GE,
DGE, QSD, F.ASCE
Field Services Coordinator
Penney Munns
Engineers
Dean Stanphill, PE, GE
Syed Tanvir Ahmed
Dhruv J. Patel
Geologists
Robert Gregorek, PG, CEG
Catherine Nelson, PG
Chris Baker, PG
Laboratory
Miguel Tzintzun
Sri Shanmugampillai
Technicians
Sergio Perez
Bill Kowalski
Sean Castillo
Jose Navarrete

Proposal to Provide On-Call Geotechnical Engineering Services City of Diamond Bar
Los Angeles County, California
April 23, 2026

Converse Consultants
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Staff Matrix
Below we identify the experience of the personnel assigned and briefly outline their qualifications.

ENGINEERS / GEOLOGISTS
Name Duties Certifications Years of
Exp.

Hashmi Quazi QA/QC Ph.D., PE, GE 39
Siva Sivathasan Principal Engineer/Project
Manager PhD, PE, GE, DGE, QSD, F.ASCE 32
Dean Stanphill Principal Engineer MBE, PE, GE 45
Robert Gregorek Senior Geologist BS, PG, CEG 46
Catherine Nelson Project Geologist BS, PG 6
Christopher Baker Project Geologist BS, PG 10

FIELD TECHNICIANS
Name Duties Certifications Years of
Exp.

Sergio Perez Lead
Technician
Caltrans 125, 216, 231, 504, 518, 533, 539, 556, 557,
ACI Certified Grade I, Nuclear Gauge, ICC Struct.

Concrete, ICC Masonry, ICC Fireproofing
22 Bill Kowalski Technician Caltrans 125, 231, 504, 518, 539, 540, 543, 556, 557, ACI Certified Field Tech Grade I, Nuclear Gauge 23
Sean Castillo Technician Caltrans 216, 231, Nuclear Gauge, ACI Grade I 19 Jose Navarrete Technician Nuclear Gauge, ACI Grade I, Caltrans 125, 216, 231 21

LABORATORY TECHNICIANS
Name Duties Certifications Years of
Exp.

Christian
Quintero Lab Technician Caltrans 125, 521, ACI Grade I 9 Mark Santano Lab Technician ACI Grade I, Nuclear Gauge 9 Key resumes start on the next page.

Proposal to Provide On-Call Geotechnical Engineering Services City of Diamond Bar
Los Angeles County, California
April 23, 2026

Converse Consultants
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3. Project Understanding
Understanding of City’s Challenges
The City of Diamond Bar is primarily a bedroom community, and as such may face significant financial challenges centered on a structural budget deficit where costs for public safety and infrastructure services outpace revenue. Addressing long-term fiscal sustainability is key, as well as maintaining the City’s population and revenue base to ensure steady tax revenue. Managing housing affordability, ensuring compliance with state requirements, and addressing the deterioration of existing residential structures are likely ongoing concerns, as well as addressing traffic congestion at key freeway intersections (60 and 57) and responding to regional air quality concerns.

Diamond Bar is a safe, family-oriented community with excellent schools, well-maintained streets and sidewalks, and beautiful parks. The City has been prudent in its annual budget planning, and City employees and residents understand Diamond Bar’s challenges and share a commitment to maintaining its quality of life. There will continue to be ongoing discussions regarding planning for long-term solutions and continuing to assess challenges. Converse would like to assist the City where possible. We tend to be conservative in our pricing and have significant experience in the area.

Approach
We understand that the City anticipates scope in the following categories:

Category A. - Land Development Services, for which Converse will perform the following tasks:

1. Pre-Entitlement Review
 Preliminary review of proposed private development projects prior to Planning Commission or City Council consideration.
 Review of geotechnical reports, grading plans, and related technical documents associated with subdivisions, commercial developments, and other private projects.  Participation in meetings with City staff, applicants, and others as requested, either virtually or in person.

2. Permitting and Final Plan Review
 Review and recommend approval of geotechnical reports, grading plans, and related documents for entitled projects during the permitting phase.  written comments, redline markups, and technical recommendations consistent with City standards and applicable codes.

3. Construction Inspection and Field Services
 Inspection services for grading, compaction, and other geotechnical-related construction activities associated with private development.
 Inspection services in a timely manner, generally within forty-eight (48) hours of request, as coordinated with the City.

Proposal to Provide On-Call Geotechnical Engineering Services City of Diamond Bar
Los Angeles County, California
April 23, 2026

Converse Consultants
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4. Meetings and Coordination
 Attendance at pre-construction meetings, design review meetings, construction coordination meetings, and other meetings, as requested by the City.  Clarification and technical support throughout the duration of each assigned project.

5. Plan Check Processing Requirements
 Receipt, review, and return of all plan check submittals, comments, and redline markups electronically.
 Standard plan check reviews, to be completed within ten (10) business days of receipt unless otherwise directed by the City.
 For complex projects, including subdivisions or large commercial developments, review of timelines, which may be negotiated on a case-by-case basis.  For complex projects, including subdivisions or large commercial developments, review of timelines, which may be coordinated with the City on a case-by-case basis.

Category B. - General Engineering Services, for which Converse will perform the following tasks:

1. Geotechnical Investigations and Design
 Soils investigations, analysis, testing, and geotechnical engineering evaluations for public improvement projects.
 Technical studies, calculations, reports, plans, specifications, and recommendations related to geotechnical conditions.

2. Construction Inspection for Public Projects
 Inspection services for grading, slope stabilization, street improvements, and miscellaneous facility improvements within public rights-of-way or on public property, including parks and City facilities.

3. Monitoring, Evaluation, and Advisory Services
 Geotechnical monitoring services for existing infrastructure, including but not limited to roadways, slopes, retaining structures, and other improvements. Services may include periodic site observations, condition assessments, instrumentation monitoring, documentation of observed conditions, and preparation of technical memoranda or reports summarizing findings and recommendations.

4. Other Geotechnical-Related Services
 Geotechnical engineering-related tasks as requested by the City that are consistent with the qualifications of a California-licensed Geotechnical Engineer. Such services may include, but are not limited to, forensic evaluations, peer review, technical advisory services, emergency response support, and specialized analyses related to soil, foundation, slope, and earthwork performance.

Proposal to Provide On-Call Geotechnical Engineering Services City of Diamond Bar
Los Angeles County, California
April 23, 2026

Converse Consultants
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Methodology
Our approach differs according to the kind of project we undertake. However, all of our projects start with a kick-off meeting in which the project’s goals, schedule, and other important factors are established. The project is guided on the following factors:

Project Controls
Prior to initiation of a project, we prepare a proposal which will list the various tasks, the duration of each, and overall cost. We meet with your project manager and go over our scope and budget, and adjust the scope and budget as agreed upon prior to signing a contract.

During the course of the project, our project manager will monitor the amount of work performed and budget expended on a weekly basis. She or he will update the budget tracking sheet and keep the City’s representative informed of the budget status. The project manager will identify the disposition of any requests for work that falls outside of our initial scope of work and budget. She or he will seek the City’s representative before providing the services. If more testing is requested than initially planned or if the contractor is behind schedule, we will meet with the City’s representative to discuss how our scope of work can be modified to keep our cost within budget.

Our goal will be to be proactive in controlling the budget and managing the schedule. As the City’s partner, we will do what it takes to deliver projects on time and within budget.

Quality Control/Quality Assurance (QA/QC)
Schedule maintenance for geotechnical investigation and materials testing and inspection projects is a matter of technical expertise, availability of qualified personnel, and internal quality controls. Our professional and field staff understand the necessity of proceeding on schedule through design and construction projects.

For the design phase of a project our project manager will acquire and review any and all permits, reports, and other pertinent documentation from the client prior to the start of a project. The professional staff will conduct a field reconnaissance to map any surface conditions. Our staff will provide the client with any pertinent information that may affect the schedule and/or project budget.

For the construction phase of a project our project manager will acquire project plans, specifications, reports and any other pertinent documentation from the client or contractor prior to the start of the project. Schedule maintenance for materials testing and inspection projects is a matter of technical expertise, availability of qualified personnel, and internal quality controls. Our field staff and contract managers understand the necessity of proceeding on schedule through new construction and rehabilitation projects. To maximize our efficiency, we typically dispatch field technicians with multiple relevant certifications. Depending on the sequencing of construction activities, one person can observe and test several items in one day on each site or between sites. In addition, certified laboratories are available 24 hours a day, 7 days a week to accommodate fluctuations in testing needs. Typical turnaround time for lab results is 48 hours, or when due.

Proposal to Provide On-Call Geotechnical Engineering Services City of Diamond Bar
Los Angeles County, California
April 23, 2026

Converse Consultants
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Communication Plan
Converse starts each assignment by carefully selecting its team. These team members are experienced and certified in multiple disciplines and have worked on various projects together.

This built-in efficiency saves project time and money, but also enhances communication among members.

Project Management: Siva K. Sivathasan, PhD, PE, GE, DGE, QSD, F. ASCE will be the main point of contact and project manager. At the beginning of the project, Dr. Sivathasan will collect all the project-specific information from the City project manager and prepare a project-specific scope and fee estimate and assemble a highly qualified team with appropriate experience. He will work with your project manager on field coordination, field work, and report progress and finalizing the reports.

For the construction projects during construction, he will discuss the contractor’s progress with your project manager weekly and work with our field services coordinator and field personnel to forecast the staffing hours of all inspection and testing activities. Based on the contractor schedule and sequencing of activities, he can project the staff requirements.

Scheduling and Service Coordination/Dispatcher: Our Field Services Coordinator (FSC) is the single point of contact to take requests for our services from the City. We request 24 hours advance notice; however, due to our proximity to your sites and amount of field personnel on staff and from our subs, we will be on-site whenever you need us.

Based on the specific project requirements, the FSC coordinates with the project manager and Lead Technician daily and schedules field personnel to be at the site on the day and time requested. With this single point of contact, we effectively reduce the chances of miscommunication and/or technicians’ failure to be at the site on time. Our FSC is available between 7:30 a.m. and 5:00 p.m. Service requests can be accommodated all seven (7) days of the week, except holidays. Due to our wide array of available staff, we can also accommodate multiple technician requests on weekends.

Communication: Scheduling of available staff and projects is coordinated through weekly office meetings. Our project managers are always available to staff and will be in constant contact with the Principal-in-Charge.

Proposal to Provide On-Call Geotechnical Engineering Services City of Diamond Bar
Los Angeles County, California
April 23, 2026

Converse Consultants
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4. Schedule
To prepare a geotechnical investigation report, we will prepare a proposal listing the various tasks and the associated cost for each task. We will also include a schedule when the final report is delivered. Typically, it varies from two to four weeks, depending on the size and complexity of the project. Our designated project manager will be responsible for delivering the project to the City on schedule and within budget unless an event occurs beyond our control. During construction, our schedule is dictated by contractor’s schedule and sequencing of activities. Prior to initiation of a project, we will prepare a proposal which will list the various tasks, the duration of each and overall cost. We will meet with your project manager and go over our scope and budget. We will adjust the scope and budget as agreed upon by the project manager prior to signing a contract.

Below is a general schedule framework demonstrating Converse’s responsiveness to City requests:

Typical Geotechnical Services Schedule (Small to Mid-Size Project)  Week 1: Project Initiation & Setup
o Initiate request and review project plans.
o Secure permits and Right of Entry.
o Schedule utility clearances (e.g., USA North/DigAlert).  Week 2: Field Investigation
o Mobilize drill rigs and personnel to the site.
o Execute soil boring, rock coring, or test pit excavation. o Perform in-situ testing (e.g., SPT, cone penetration test).  Week 3-4: Laboratory Testing
o Transport samples to the lab.
o Perform classification tests (moisture content, Atterberg limits). o Conduct strength/consolidation tests (direct shear, triaxial).  Week 5-6: Data Analysis & Reporting
o Analyze data and perform geotechnical engineering calculations. o Draft boring logs and site maps.
o Prepare final report with foundation and design recommendations.

Key Scheduling Milestones
 Mobilization: 1–3 days.
 Fieldwork Duration: 1–5 days (varies by depth/number of borings).  Lab Testing: 1–2 weeks.
 Final Report Submittal: ~4 weeks after Notice to Proceed.

Factors Affecting Schedule
 Site Access/Traffic Control: Restricted areas or high-traffic areas increase permitting time.  Environmental Concerns: Contaminated sites require specialized handling.  Weather: Heavy rain or freezing conditions can delay drilling.  Groundwater Monitoring: Longer timelines if multi-week, post-drilling groundwater monitoring is required.

Converse Consultants PW2026 Geotech

CONVERSE CONSULTANTS
Prevailing Wage Schedule of Fees
Introduction
It is the objective of Converse Consultants to provide its clients with quality professional and technical services and a continuing source of professional advice and opinions. Services will be performed in a manner consistent with that level of care and skill ordinarily exercised by members of the profession currently practicing in the same locality under similar conditions. This fee schedule is valid through December 31, 2029.

Hourly Charges for Personnel
Staff assignments will depend on personnel availability, job complexity, project site location, and experience level required to satisfy the technical requirements of the project and to meet the prevailing standard of professional care.

Field Technical Services (hourly rate including vehicle and equipment) Construction Inspector – ACI/ICC and/or AWS/CWI certified (concrete, post-tension, masonry, structural steel, fireproofing; includes concrete batch plant and local steel fabrication inspections) ...............................$156 DSA Masonry Inspector ........................................................................................................................................................... 156 Non-Destructive Testing Inspector (ultrasonic, magnetic particle, dye penetrant, skidmore, pull testing, torque testing, Schmidt hammer, and pachometer) .......................................................................................................... 161 Coating Inspector/Coring Technician ....................................................................................................................................... 161 Soils Technician (soil, base, asphalt concrete, and moisture emission testing) ....................................................................... 156 Sample Pick-Up ......................................................................................................................................................................... 60 Professional Services (consultation for field and office, if requested) Staff Professional ...................................................................................................................................................................$156 Senior Staff Professional.......................................................................................................................................................... 161 Project Professional ................................................................................................................................................................. 170 Project Manager....................................................................................................................................................................... 180 Senior Professional .................................................................................................................................................................. 185 Principal Professional............................................................................................................................................................... 225 Principal Consultant ................................................................................................................................................................. 235 Laboratory Testing
Laboratory Technician...................................................................................................................................................... Per Test (see Geotechnical Laboratory Testing and Materials Testing Services fee schedules.) Laboratory Supervisor............................................................................................................................................................ $100 Office Support
Clerical/Word Processing......................................................................................................................................................... $95 Drafting....................................................................................................................................................................................... 95 CAD Operator/Drafting Manager..............................................................................................................................................100 Overtime and special shift rates for Field Services personnel are determined in accordance with Prevailing Wage law. Travel time to and from the job site will be charged at the hourly rates for the appropriate personnel.

Expenses

1. Exploration expenses (drilling, trenching, etc.) are charged at cost plus fifteen percent.

2. Travel and subsistence expenses (transportation, room and board, etc.) for individuals on projects requiring travel and/or living 50 miles away from the project site are charged at cost plus fifteen percent.

3. Automobile and truck expenses are charged at cost plus fifteen percent (rentals) or at the current IRS milage rate per mile for company-owned vehicles traveling between principal office and project.

4. Other out-of-pocket direct project expenses (aerial photos, long-distance telephone calls, permits, bonds, outside printing services, tests, etc.) are charged at cost plus fifteen percent.

Invoices

1. Invoices will be submitted to the Client on a monthly basis, and a final bill will be submitted upon completion of services.

2. Payment is due upon presentation of invoice and is past-due thirty days from invoice date. In the event Client fails to make any payment to Converse when due, Converse may immediately cease work hereunder until said payment, together with a service charge at the rate of eighteen percent per annum (but not exceeding the maximum allowed by law) from the due date, has been received.

Further, Converse may at its sole option and discretion refuse to perform any further work irrespective of payment from Client in the event Client fails to pay Converse for services when said payments are due.

3. Client shall pay attorneys’ fees or other costs incurred in collecting any delinquent amount.

General Conditions
The terms and provisions of the Converse General Conditions are incorporated into this fee schedule as though set forth in full. If a copy of the General Conditions does not accompany this fee schedule, Client should request a copy from this office.

Converse Consultants GLT2026

CONVERSE CONSULTANTS
Schedule of Fees – Geotechnical Laboratory Testing
Compensation for laboratory testing services will be made in accordance with this fee schedule which includes test report(s) and engineering time. Costs of tests not on this schedule will be by quote and/or in accordance with our current hourly fee schedule. The rates are based on non-contaminated soil. A surcharge will be charged for handling contaminated material, which will be determined based on the project. This fee schedule is valid through December 31, 2029.

IDENTIFICATION AND INDEX PROPERTIES TESTS
Visual Classification, ASTM D2488...................................20.00 Engineering Classification, ASTM D2487 ......................... 25.00 Moisture Content and Dry (bulk) Density,
ASTM D2216 and D2937............................................. 25.00 Moisture Content, ASTM D2216 ..................................20.00 Shrinkage Limit, ASTM D4943..........................................85.00 Atterberg Limits, ASTM D4318
Several points ............................................................ 150.00 One Point.....................................................................50.00 Particle Size Analysis, ASTM D6913
Fine Sieve, from +#200 to #4.....................................100.00 Coarse and Fine Sieve, from #200 to 3 in..................180.00 Hydrometer ................................................................ 120.00 Percent Passing #200 Sieve, ASTM D1140...................... 80.00 Specific Gravity
Fine, passing #4 sieve, ASTM D854..........................100.00 Coarse, retained on #4 sieve, ASTM C127................100.00 Sand Equivalent Test, ASTM D2419............................... 130.00 Double Hydrometer Dispersion, ASTM D4221................150.00

COMPACTION AND BEARING STRENGTH
Standard Proctor Compaction, ASTM D698 or ASTM D1557
Method A or B............................................................ 210.00 Method C, 6” mold...................................................... 220.00 California Impact Method, Caltrans 216.......................... 220.00 R-value, ASTM D2844 and CTM301............................... 280.00 California Bearing Ratio (CBR), ASTM D1883
1 Point........................................................................ 550.00 3 Points ......................................................................750.00 Relative Density

0.1 Cubic Foot Mold...................................................200.00

0.5 Cubic Foot Mold...................................................300.00

SHEAR STRENGTH
Torvane/Pocket Penetrometer ..........................................25.00 Direct Shear
Quick Test....................................................................75.00 Consolidated, Drained, granular soil,
ASTM D3080 ........................................................ 230.00 Consolidated, Drained, fine grained soil,
ASTM D3080 ........................................................ 260.00 Consolidated, Undrained, fine grained soil................. 230.00 Residual Strength, per cycle ........................................ 70.00 Remolded Specimens .................................................. 70.00

STATIC UNIAXIAL AND TRIAXIAL STRENGTH TESTS
(PER POINT)
Unconfined Compression, ASTM D2166 ........................150.00 Unconsolidated, Undrained, ASTM D2850 .....................160.00 Consolidated, Undrained, per point ................................700.00 Consolidated, Drained, per point ....................................700.00 With Pore Pressure Measurement, per load...................150.00 Remolded Specimen......................................................... 90.00 CONSOLIDATION (ASTM2435) AND SWELL COLLAPSE
(ASTM D4546) TESTS
8 Load Increments .......................................................... 260.00 Additional Load Increment ................................................ 50.00 Time-Ratio, per load increment......................................... 90.00 Single Point, collapse test................................................. 90.00 Single Load Swell, ASTM D4546
Ring Sample, Field Moisture......................................... 95.00 Ring Sample, Air Dried ................................................. 95.00 Remolded Sample.............................................................. 70.00 Expansion Index Test, UBC 29-2/ASTM D4829................140.00

HYDRAULIC CONDUCTIVITY TESTS
Constant Head, ASTM D2434...........................................250.00 Falling Head Flexible Wall, ASTM D5084 .........................300.00 Triaxial Permeability, EPA 9100........................................350.00 Remolded Specimen.......................................................... 60.00

CHEMICAL TESTS
Corrosivity (pH, resistivity, sulfates, chlorides)..................225.00 Organic Content, ASTM D2974.........................................100.00 Conditions: Unit rates presented on this fee schedule are for routinely performed geotechnical laboratory tests. Numerous other earth material physical tests can be performed in our geotechnical laboratories, including rock core, soil cement and soil lime mixture tests. Tests not listed can be quoted upon request. This fee schedule is valid through December 31, 2026.

Prices are based on the assumption that samples are uncontaminated and do not contain heavy metals, acids, carcinogens and/or volatile organics which can be measured by an organic vapor analyzer or photoionization detector with a concentration greater than 50 parts-per-million (ppm). Quoted testing fees are based on the assumption that no protective clothing will be required to handle samples. If Level D protective clothing will be required during handling of samples (as defined in Federal CFR Part 1910.120), then a 40% increase in fees presented in this schedule will be applied. Level C protective clothing will be a 60% increase in fees. Converse will not handle samples that require either Level B or Level A protection in our geotechnical laboratories.

Contaminated samples will be returned to the client. Uncontaminated samples will be disposed of 30 days after presentation of test results. The client must disclose the source of samples. Samples imported from out of state will be incinerated after testing in accordance with requirements of the United States Department of Agriculture. Soil samples obtained within the State of California currently designated quarantine areas will also be incinerated in accordance with the requirement of the State of California, Department of Food and Agriculture, Division of Plant Industry, Pest Exclusion. A $5.00 incineration fee will be added to each sample that is required to be incinerated in accordance with State and Federal law.

Test results requiring plots will be presented in a publishable format generated from computer programs. Otherwise, raw test numbers will be presented. A minimum laboratory fee of $50.00 will be charged to present and mail test results. Beyond the standard U.S. Mail delivery, specialized transmittal will be charged at additional cost (e.g., Federal Express, UPS, etc.). Geotechnical testing does not include engineering and/or geologic review and analysis.

Typical turnaround for geotechnical laboratory testing is two weeks (or roughly ten working days). To expedite test turnaround to five working days, a 50% increase in the fees in this schedule will be applied. Many geotechnical tests require at least one week to perform in accordance with ASTM or other standard specifications. Fees presented in this schedule for relatively undisturbed direct shear, consolidation or expansion pressure tests are based on the assumption that 2.416-inch inside diameter brass ring samples will be provided to the geotechnical laboratory for testing. Remolded specimens will be compacted in standard 2.5-inch outside diameter brass rings for direct shear, consolidation and expansion pressure tests. All fees presented in this schedule are based on the assumption that the client will deliver samples to our laboratory at no additional cost to Converse.

Invoices will be issued monthly and are payable on receipt unless otherwise agreed upon. Interest of 1.5% per month (but not exceeding the maximum allowed by law) will be payable on any amount not paid within thirty days; payment thereafter to be applied first to accrued interest and then to the principle unpaid amount. The Client shall pay any attorneys' fees or other costs incurred in collecting any delinquent amounts.

Converse Consultants MTS2026

CONVERSE CONSULTANTS
Schedule of Fees – Materials Laboratory Testing
Compensation for laboratory testing services will be based on rates in accordance with this fee schedule which includes test report(s) and engineering time. Costs of tests not on this schedule will be by quote and/or in accordance with our current hourly fee schedule.

Our services will be performed in accordance with the General Conditions. This fee schedule is valid through December 31, 2029.

AGGREGATES
Moisture Content, ASTM D2216 .............................................. 25.00 Particle Size Analysis
Coarse, ASTM C136, each............................................... 120.00 Coarse and Fine, ASTM C136 & C137), each.................. 180.00 Specific Gravity & Absorption
Coarse Aggregate, ASTM C127....................................... 115.00 Fine Aggregate, ASTM C128 ........................................... 175.00 Unit Weight per Cubic Foot, ASTM C29 ............................. 75.00 Soundness, Sodium or Magnesium, ASTM C88, each..... 550.00 Potential Alkali Reactivity, ASTM D289 ............................ 700.00 Freeze Thaw Soundness.................................................. 175.00 Los Angeles Abrasion, per class, ASTM C131, C535....... 375.00 Sand Equivalent, ASTM D2419........................................ 180.00 Lightweight Particles, ASTM C123, each.......................... 300.00 Clay Lumps & Friable Particles, ASTM C142, each.......... 290.00 Stripping Test, ASTM D1664, each .................................... 85.00 Organic Impurities, ASTM C40......................................... 140.00 Durability ...................................................................... By Quote

CONCRETE TESTS
Laboratory Trial Batch, ASTM C192 .................................. By Quote Laboratory Mix Design, Historical Data.............................. By Quote Compression Test, 6”x12” Cylinder, ASTM C39, each............. 55.00 Lightweight Concrete
Compression ...................................................................... 55.00 Unit Weight......................................................................... 55.00 Specimen Preparation, Trimming or Coring, each ................... 75.00 Bond Strength, ASTM C321
Prepared by Converse...................................................... 250.00 Prepared by Others .......................................................... 150.00 Core Compression Test, ASTM C12, each............................ 120.00 Flexure Test, 6”x6” Beams, ASTM C78, each........................ 130.00 Modulus of Elasticity, Static, ASTM C469, each .................... 275.00 Length Change, ASTM C157, 3 bars, 5 readings each,
up to 26 days.................................................................... 550.00 Splitting Tensile, 6”x12” Cylinders, each................................ 110.00 Field Concrete Control (sampling, slump, temperature,
cast 4 cylinders, molds, cylinder pick-up, within 10 miles of office, stand-by extra), ASTM/UBC, hourly rate
schedule, or each cylinder.................................................. 95.00 Field Concrete Control (same as above plus air content test), ASTM/UBC, each cylinder.................................................. 95.00 Hold Cylinder........................................................................... 10.00 Cylinder Mold, sent to job site but not cast by Converse or returned to Converse............................................................ 7.00 MASONRY (ASTM C140, E447, UBC STANDARD 24-22)
Moisture Content, as received, each...................................... 105.00 Absorption, each...................................................................... 85.00 Compression, each.................................................................. 85.00 Shrinkage, ASTM C426, each ............................................... 250.00 Net Area and Volume, each..................................................... 30.00 Masonry Blocks, per set of 9............................................... 1,500.00 Masonry Core Compression, each......................................... 125.00 Masonry Core Shear, each.................................................... 245.00 Masonry Core Trimming, each............................................... 150.00 Compression Test, grouted prisms, 8”x8”x16”, each.............. 300.00 Compression Test, grouted prisms, 12”x16”x16”, each.......... 425.00 Compression Test
2”x4” Mortar Cylinder, each ................................................ 55.00 3”x6” Grout Prisms, each.................................................... 55.00 2” Cubes, ASTM C109, each.............................................. 55.00 Cast by Others......................................................................... 55.00 Mortar or Grout Mix Designs.............................................. By Quote

FIREPROOFING TESTS
Oven Dry Density, per sample................................................. 80.00

MOISTURE EMISSION TEST
Moisture Emission Test Kit......................................................85.00

ASPHALTIC CONCRETE
Stability, Flow, and Unit Weight, ASTM D6927 .....................500.00 Marshall ASTM D1559, ASTM D2726...................................450.00 Measured Maximum Specific Gravity of Mix, ASTM D2041,
Rice Method, each ..........................................................350.00 Void Analysis of Cores or Marshall Specimens,
Calculations Only, ASTM D3203, set of 2 or 3...................60.00 Laboratory Mixing of Asphalt & Concrete, per sample.............75.00 Complete Asphalt Concrete Mix Design
Hveem or Marshall ......................................................By Quote Extraction of Asphalt and Gradation, ASTM D2172, Method B, or California 310, including ash correction, each .............455.00 Extraction of Rubberized Asphalt & Gradation, each.............350.00 Specific Gravity, ASTM D2726 or ASTM D1188
Uncoated...........................................................................95.00 Coated.............................................................................125.00 Immersion-Compression .......................................................650.00 Particle Coating, ASTM D2489 ...............................................95.00 Stripping, ASTM D1664 ..........................................................85.00 Moisture or Volatile Distillates in Paving Mixtures, or Materials Containing Petroleum Products or
By-Products.....................................................................350.00 Retained Strength, ASTM D1074/D1075, 6 specimens.....By Quote Retained Stability, Mil, Std, 520A, Method 104,
6 specimens ................................................................By Quote CBR, ASTM D1883, including M/D Curve, 1 point ................400.00 Asphalt Temperature...............................................................20.00

STRUCTURAL STEEL
Tensile Test #9 Bar or Smaller, each ......................................65.00 Bend Test #9 Bar or Smaller, each .........................................65.00 Tensile Test #10 Bar or Greater, each ..................................300.00 Tensile Test #14 Bar, each ...................................................330.00 Rebar Coupler Tensile Test ..................................................160.00 Tensile Test, Welded #9 Bar or Smaller, each ......................160.00 Tensile Test, Welded #10 Bar or Greater, each ....................300.00 Tensile Test, Welded #14 Bar, each .....................................330.00 Tensile Test, Mechanically Spliced, #9 Bar or Smaller,
each ................................................................................210.00 Tensile Test, Mechanically Spliced, #10 Bar or Greater, each ................................................................................350.00

HIGH STRENGTH BOLT, NUT, AND WASHER TESTING
Wedge Tensile Test, A490 Bolts
Under 100,000 lbs., each ................................................130.00 Over 100,000 lbs., each ..................................................140.00 Wedge Tensile Test, A325 Bolts
Under 100,000 lbs., each ................................................160.00 Tensile Test, Anchor Bolts, tested with displacement
transducers, each............................................................300.00 Nut Hardness, Proof & Cone Proof Load Test, each...............65.00 Washer Hardness, each..........................................................55.00 A325 or A490, Bolt Hardness Only, each................................55.00 Bolt A325 or A490 Wedge Tensile
Under 100,000 lbs. & Hardness, each.............................240.00 Over 100,000 lbs. & Hardness, each...............................280.00 Bolt, Nut & Washer, all tests per set with bolts
Under 100,000 lbs. ..........................................................400.00 Over 100,000 lbs. ............................................................500.00 See Schedule of Fees – Geotechnical Laboratory Testing for soil testing. Hourly rates are available upon request. Field Laboratory rates are available upon request. Listed unit rates are based upon the assumption that samples will be delivered to our laboratory at no cost to Converse.

Agenda Item #: 6.22
Meeting Date: June 16, 2026

CITY COUNCIL AGENDA REPORT
TO: Honorable Mayor and Members of the City Council
FROM: Daniel Fox, City Manager
SUBJECT: Amendments to the Consulting Services Agreements for On-Call Civil Engineering, Landscape Architectural, and NPDES Professional Services.

STRATEGIC GOAL: Open, Engaged and Responsive Government RECOMMENDATION:

A. Approve, and authorize the City Manager to sign Amendment No. 1 to the Consulting Services Agreement with Cannon Corporation through June 30, 2028; B. Approve, and authorize the City Manager to sign Amendment No. 1 to the Consulting Services Agreement with HR Green Pacific, Inc. through June 30, 2028; C. Approve, and authorize the City Manager to sign Amendment No.3 to the Consulting Services Agreement with Local Agency Engineering Associates, Inc., through June 30, 2028; D. Approve, and authorize the City Manager to sign Amendment No. 2 to the Consulting Services Agreement with TAIT & Associates, Inc., through June 30, 2028; and, E. Approve, and authorize the City Manager to sign Amendment No. 1 to the Consulting Services Agreement with John L. Hunter & Associates, Inc., through June 30, 2028.

FINANCIAL IMPACT:

The Fiscal Year 2026/27 Budget includes funding for on-call civil engineering and related professional services, including General Funds, Proposition C Funds, and Measure W Funds. City funds are available for City projects and operations, including engineering design, capital improvement projects, infrastructure maintenance, and regulatory compliance. In addition to the City funds listed above, developer funds will be used for the work related to the development project review services under these agreements.

An annual not-to-exceed amount of $100,000 for each selected firm is recommended for on-call civil engineering and related professional services. The not-to-exceed amounts establish maximum contractual authority and do not represent anticipated annual expenditures. City-funded services will remain subject to available appropriations, while development-related services will be funded through developer fees and deposits. The proposed amounts provide sufficient capacity to accommodate varying workloads and updated billing rates during the extension term without requiring future contract amendments solely for administrative purposes.

BACKGROUND:

Agenda Item #: 6.22
Meeting Date: June 16, 2026
To supplement the City's professional capabilities, civil engineering and related professional services have been utilized by the City on an as-needed basis to ensure efficiency in Public Works Department functions such as land development project processing, Capital Improvement Program (CIP) project planning and design, plan check services, infrastructure maintenance, regulatory compliance, and construction support.

On June 20, 2023, the City Council approved consultant services agreements with the subject firms to provide on-call civil engineering and related professional services. The agreements are scheduled to expire on June 30, 2026, and include provisions allowing for extension upon mutual agreement of the parties.

Since approval of the original agreements, in addition to the regular on-call services, the City has utilized certain consultants for project-specific assignments through separate amendments. Local Agency Engineering, Inc. ("LAE") provided additional support for the Maple Hill Park Improvements Project (CIP No.

FP23506) (Amendment N0. 1) and the Diamond Bar Boulevard Complete Streets Project (CIP No. SI256) (Amendment No.2). TAIT & Associates, Inc. ("TAIT") provided additional work of design services for the Pantera Park Hard Court Rehabilitation and LED Light Retrofit Project (CIP No. FP23503) and Groundwater Drainage Improvements at Cold Spring Lane (CIP No. SI23101) (Amendment No. 1). These project-specific amendments do not affect the proposed extension of the on-call portion of the agreements.

Given the diverse range of services that may be required, it is beneficial for the City to retain qualified on-call consultants to provide timely, specialized support for City projects and development review activities. John L.

Hunter & Associates, Inc. ("JLHA") also provides support for the City's stormwater compliance program. The Measure W funds programmed for JLHA's services are limited to eligible NPDES and MS4 Permit activities, including inspections, investigations, enforcement, reporting, and staff training.

ANALYSIS:

The City's current on-call consultants have provided responsive and professional services in support of development review, capital improvement projects, infrastructure maintenance, regulatory compliance activities, and other specialized engineering assignments. Their familiarity with City standards, procedures, and ongoing projects provides valuable continuity and institutional knowledge.

The City's on-call consultants provide specialized services that supplement staff resources and support a variety of operational and project needs, including:
• Cannon Corporation – Plan check services, development review, specialized inspections for private development projects, and general engineering support on an as-needed basis (Attachment 1). • HR Green Pacific, Inc. – Plan check services, development review, specialized inspections for private development projects, and general engineering support on an as-needed basis (Attachment 2). • Local Agency Engineering, Inc. – Construction observation and related support services for capital improvement and infrastructure projects (Attachment 3). • TAIT & Associates, Inc. – General civil engineering and landscape architectural services on an asneeded basis (Attachment 4). • John L. Hunter & Associates, Inc. – Environmental compliance services associated with the City's National Pollutant Discharge Elimination System (NPDES) Program and Municipal Separate Storm Sewer System (MS4) Permit requirements (Attachment 5).

Maintaining multiple on-call consultants allows the City to access a broad range of technical expertise, respond to fluctuating workloads, and efficiently complete project and development review activities without increasing permanent staffing levels. The availability of multiple firms also provides flexibility to assign work based on consultant availability, specialized qualifications, and project-specific needs.

Staff recommends extending the existing agreements with the five (5) consulting firms for an additional term in accordance with the provisions of the original agreements. The proposed not-to-exceed amount of $100,000

Agenda Item #: 6.22
Meeting Date: June 16, 2026
for each firm provides sufficient capacity to address routine assignments, development-related services, and unforeseen project needs while maintaining expenditures on an as-needed basis.

Compensation for services will be billed in accordance with each consultant's approved fee schedule and the specific scope of work authorized by the City.

LEGAL REVIEW:

The City Attorney has reviewed and approved the Agreements as to form.

PREPARED BY:

Vivian Chen, Associate Enginer, Public Works
ATTACHMENTS:

1. First Amendment (Cannon)

2. First Amendment (HR Green)

3. Third Amendment (LAE Associates)

4. Second Amendment (TAIT & Associates)

5. First Amendment (John L. Hunter & Associates)

1450826.1

FIRST AMENDMENT
TO

CONSULTANT SERVICES AGREEMENT
This First Amendment to Consultant Services Agreement (“First Amendment”) is made and entered into as of June 16, 2026, by and between the City of Diamond Bar, a municipal corporation (“City”), and Cannon Corporation, a California corporation (herein referred to as the “Consultant”) with reference to the following:

A. The City and the Consultant entered into that certain Consultant Services Agreement dated as of June 20, 2023, which is incorporated herein by this reference (the “Original Agreement”); and
B. The City and the Consultant desire to amend the Original Agreement to modify, amend and supplement certain portions thereof.

NOW, THEREFORE, the parties hereby agree as follows:

1. Defined Terms. Except as otherwise defined herein, all capitalized terms used herein shall have the meanings set forth for such terms in the Original Agreement.

2. Revised Term. This First Amendment shall take effect July 1, 2026, and shall continue until June 30, 2028, unless earlier terminated pursuant to the provisions of the Original Agreement.

3. Revised Compensation. The total not-to-exceed compensation set forth in Section 3 of the Original Agreement was the sum of Sixty-Two Thousand Five Hundred Dollars and Zero Cents ($62,500.00).

Section 3 of the Original Agreement is hereby amended to provide for an increase of Thirty-Seven Thousand Five Hundred Dollars and Zero Cents ($37,500.00) so that the total not-to-exceed compensation, as amended by this First Amendment shall not exceed One Hundred Thousand Dollars and Zero Cents ($100,000.00) each Fiscal Year without the prior authorization of the City.
4 Integration. This First Amendment and all attachments hereto (if any) integrate all of the terms and conditions mentioned herein, and supersede all negotiations with respect hereto. This First Amendment amends, as set forth herein, the Original Agreement and except as specifically amended hereby, the Original Agreement shall remain in full force and effect. To the extent that there is any conflict or inconsistency between the terms and provisions of this First Amendment and the terms and provisions of the Original Agreement, the terms and provisions of this First Amendment shall control.

IN WITNESS hereof, the parties enter into this First Amendment on the year and day first above written.
“CONSULTANT” “CITY”
Cannon Corporation CITY OF DIAMOND BAR
By: By:

Printed Name: Daniel Fox, City Manager
Title:

By: ATTEST:

Printed Name:

Title:

Kristina Santana, City Clerk
APPROVED AS TO FORM:

Omar Sandoval, City Attorney
*NOTE:If Consultant is a corporation, the City requires the following signature(s):
-- (1) the Chairman of the Board, the President or a Vice-President, AND (2) the Secretary, the Chief Financial Officer, the Treasurer, an Assistant Secretary or an Assistant Treasurer. If only one corporate officer exists or one corporate officer holds more than one corporate office, please so indicate. OR
-- The corporate officer named in a corporate resolution as authorized to enter into this Agreement. A copy of the corporate resolution, certified by the Secretary close in time to the execution of the Agreement, must be provided to the City.

2026/2027 Fee Schedule

CONSTRUCTION MANAGEMENT
Principal In Charge $295 Director, Construction Management $239 Senior Principal Engineer II $282 Principal Construction Manager $227 Senior Principal Engineer $272 Sr. Construction Manager $222 Principal Engineer $258 Sr. Resident Engineer $227
Senior Associate Engineer $232 Resident Engineer $213
Associate Engineer $212 Assistant Resident Engineer III $195 Senior Project Engineer $198 Assistant Resident Engineer II $179 Project Engineer $184 Assistant Resident Engineer I $167 Design Engineer $168 Construction Inspector III $164
Senior CAD Tech $130 Construction Inspector II $156
CAD Tech $120 Construction Inspector I $132
Plan Check Manager $288 TECHNICAL SUPPORT
Senior Plan Check Engineer $193 Senior Consultant $350
Plan Check Engineer II $168 Engineering Assistant IV $140 Plan Check Engineer I $141 Engineering Assistant III $133 STRUCTURAL Engineering Assistant II $122
Sr. Principal Engineer $244 Engineering Assistant I $110 Principal Engineer $222
Sr. Associate Engineer $208
Associate Engineer $193
Sr. Project Engineer $188
Project Engineer $175
Principal Designer $155
Sr. Project Designer $136
Design Engineer $155
Three-Man Field Crew (PW) $475
Two-Man Field Crew (PW) $372
One-Man Field Crew (PW) $262
CIVIL

SURVEYING

+ OVERHEAD % + = COMBINED%
NORMAL + + = 98.12%
OVERTIME + + = 98.20%
FEE % 10%

BILLING INFORMATION
Actual % or $ Hourly rate -
Straight OT(1.5x) OT(2x) From To hourly rate³ increase for classifications only $ 283.43 283.31 $ 283.43 $ 1/1/2026 12/31/2026 130.00 $ $ 286.26 286.14 $ 286.26 $ 1/1/2027 12/31/2027 131.30 $ 1.00% $ 289.12 289.01 $ 289.12 $ 1/1/2027 12/31/2027 132.61 $ 1.00% $ 292.01 291.90 $ 292.01 $ 1/1/2028 12/31/2028 133.94 $ 1.00% $ 294.93 294.82 $ 294.93 $ 1/1/2029 12/31/2029 135.28 $ 1.00% $ 246.36 246.26 $ 246.36 $ 1/1/2025 12/31/2025 113.00 $ $ 373.24 248.73 $ 497.65 $ 1/1/2026 12/31/2026 114.13 $ 1.00% $ 376.97 251.21 $ 502.63 $ 1/1/2027 12/31/2027 115.27 $ 1.00% $ 380.74 253.73 $ 507.66 $ 1/1/2028 12/31/2028 116.42 $ 1.00% $ 384.55 256.26 $ 512.73 $ 1/1/2029 12/31/2029 117.59 $ 1.00% $ 369.54 246.26 $ 492.73 $ 1/1/2025 12/31/2025 113.00 $ $ 373.24 248.73 $ 497.65 $ 1/1/2026 12/31/2026 114.13 $ 1.00% $ 376.97 251.21 $ 502.63 $ 1/1/2027 12/31/2027 115.27 $ 1.00% $ 380.74 253.73 $ 507.66 $ 1/1/2028 12/31/2028 116.42 $ 1.00% $ 384.55 256.26 $ 512.73 $ 1/1/2029 12/31/2029 117.59 $ 1.00% $ 369.54 246.26 $ 492.73 $ 1/1/2025 12/31/2025 113.00 $ $ 373.24 248.73 $ 497.65 $ 1/1/2026 12/31/2026 114.13 $ 1.00% $ 376.97 251.21 $ 502.63 $ 1/1/2027 12/31/2027 115.27 $ 1.00% $ 380.74 253.73 $ 507.66 $ 1/1/2028 12/31/2028 116.42 $ 1.00% $ 384.55 256.26 $ 512.73 $ 1/1/2029 12/31/2029 117.59 $ 1.00% $ 369.54 246.26 $ 492.73 $ 1/1/2025 12/31/2025 113.00 $ $ 373.24 248.73 $ 497.65 $ 1/1/2026 12/31/2026 114.13 $ 1.00% $ 376.97 251.21 $ 502.63 $ 1/1/2027 12/31/2027 115.27 $ 1.00% $ 380.74 253.73 $ 507.66 $ 1/1/2028 12/31/2028 116.42 $ 1.00% $ 384.55 256.26 $ 512.73 $ 1/1/2029 12/31/2029 117.59 $ 1.00% $ 268.16 178.70 $ 357.55 $ 1/1/2025 12/31/2025 82.00 $
$ 270.85 180.49 $ 361.13 $ 1/1/2026 12/31/2026 82.82 $ 1.00% $ 273.55 182.30 $ 364.74 $ 1/1/2027 12/31/2027 83.65 $ 1.00% $ 276.29 184.12 $ 368.39 $ 1/1/2028 12/31/2028 84.48 $ 1.00% $ 279.05 185.96 $ 372.07 $ 1/1/2029 12/31/2029 85.33 $ 1.00% $ 268.16 178.70 $ 357.55 $ 1/1/2025 12/31/2025 82.00 $
$ 270.85 180.49 $ 361.13 $ 1/1/2026 12/31/2026 82.82 $ 1.00% $ 273.55 182.30 $ 364.74 $ 1/1/2027 12/31/2027 83.65 $ 1.00% $ 276.29 184.12 $ 368.39 $ 1/1/2028 12/31/2028 84.48 $ 1.00% $ 279.05 185.96 $ 372.07 $ 1/1/2029 12/31/2029 85.33 $ 1.00% $ 268.16 178.70 $ 357.55 $ 1/1/2025 12/31/2025 82.00 $
$ 270.85 180.49 $ 361.13 $ 1/1/2026 12/31/2026 82.82 $ 1.00% $ 273.55 182.30 $ 364.74 $ 1/1/2027 12/31/2027 83.65 $ 1.00% $ 276.29 184.12 $ 368.39 $ 1/1/2028 12/31/2028 84.48 $ 1.00% $ 279.05 185.96 $ 372.07 $ 1/1/2029 12/31/2029 85.33 $ 1.00% $ 268.16 178.70 $ 357.55 $ 1/1/2025 12/31/2025 82.00 $
$ 270.85 180.49 $ 361.13 $ 1/1/2026 12/31/2026 82.82 $ 1.00% $ 273.55 182.30 $ 364.74 $ 1/1/2027 12/31/2027 83.65 $ 1.00% $ 276.29 184.12 $ 368.39 $ 1/1/2028 12/31/2028 84.48 $ 1.00% $ 279.05 185.96 $ 372.07 $ 1/1/2029 12/31/2029 85.33 $ 1.00% Hourly Billing Rates² Effective date of hourly rate
Project Manager

COST PROPOSAL
Specific Rate of Compensation (use for on-call or as-needed contracts) City of Diamond Bar On-Call Construction Management / Project Management and Inspection Services FRINGE
BENEFIT % GENERAL ADMINISTRATION %
Construction Manager /
Resident Engineer
Structures Representative
Constructability Review
Plan Checkers
Construction Inspector
Consultant or Subconsultant ___FCG_(Prime)__________________ Contract No. _________ Date 1/22/2026

CALCULATION INFORMATION
Name/Job
Title/Classification¹
Structures Inspector
Electrical Inspector
Permit Inspector