HomeMy WebLinkAboutProposal RKA CONSULTING GROUP Proposal DesignSubmitted by:
RKA Consulting Group
398 Lemon Creek Drive, Suite E
Walnut, CA 91789
www.rkagroup.com
(909) 594-9702
City of Diamond Bar
Proposal for: FY 25/26 Civil Engineering Design Services for:
Residential & Collector Streets Rehabilitation,
Arterial Streets Rehabilitation, and
Residential Neighborhood ADA Curb Ramps Improvement Project
City Project No. S1261
November 10, 2025
Submitted to:
David G. Liu, P.E.
Director of Public Works/City Engineer
City of Diamond Bar
21810 Copley Drive
Diamond Bar, CA 91765
Table of Contents
01 Cover Letter
02 Project Approach & Scope of Work
03
04
Experience & Qualifications
05
Team Organization Structure
Estimated Labor Hours
1
3
12
18
19
06 Resumes & Qualifications of Project Team 20
B Cost Proposal - Submitted Separately
07 Required Statements 32
A 33Appendix: Samples of Work
01 Cover Letter
1
November 10, 2025
David G. Liu, P.E.
Director of Public Works/City Engineer
City of Diamond Bar
21810 Copley Drive
Diamond Bar, CA 91765
Re: Proposal for Fiscal Year 25/26 Civil Engineering Design Services for Residential & Collector
Streets Rehabilitation, Arterial Streets Rehabilitation, and Residential Neighborhood ADA Curb
Ramps Improvement Project —City Project No. S1261
Dear David,
RKA Consulting Group (RKA) is pleased to submit our proposal to provide professional engineering
design services for the City of Diamond Bar's ten various Pavement Rehabilitation Projects, noted
below:
1.Project 1: ADA Curb Ramp Improvement Project (Area 6)
2.Project 2: Arterial Street Rehabilitation: Brea Canyon Road, Diamond Bar Boulevard
3.Project 3: ADA Curb Ramp Improvement Project (Area 7)
4.Project 4: Residential & Collector Streets Rehabilitation (Area 5)
5.Project 5: Arterial Street Rehabilitation: Pathfinder Road
Optional Projects:
6. Project 6: ADA Curb Ramp Improvement Project (Area 1)7
7. Project 7: Residential & Collector Streets Rehabilitation (Area 6)
8. Project 8: Arterial Street Rehabilitation: Grand Avenue and Diamond Bar Blvd.
9. Project 9: Arterial Street Rehabilitation: Temple Avenue/Avenida Rancheros
10. Project 10: Arterial Street Rehabilitation: Diamond Bar Boulevard and Brea Canyon Rd
The City will benefit significantly from this multi-project effort, which focuses on enhancing public
safety and mobility. Over the next three years, we will implement ADA- compliant improvements to
curb ramps and sidewalks, making them more accessible for all residents. We will support
community mobility and connectivity with the evaluation and potential implementation of new
bicycle infrastructure which promote safer and more inclusive transportation options. Additionally,
the many rehabilitation efforts to the roadway infrastructure will improve overall functionality and
create a more enjoyable driving experience everyone traveling through the community each day.
As a committed partner in Diamond Bar, we bring direct experience from delivering this project scope
in recent years. Our team is uniquely positioned to build upon this foundation, applying proven
strategies and understanding, alongside innovative, sustainable solutions tailored to the City's
evolving needs. This continuity ensures both efficiency and meaningful progress toward long-term
goals. We are confident in our capabilities to deliver cost-effective and design solutions to
challenged streets like unstable subgrades in reconstruction zones, load-related surface distresses
on heavily traveled arterials, excessive ponding and poor drainage in localized areas, and ADA curb
ramp compliance deficiencies.
Exceptional Knowledge & Local Experience. We have successfully delivered these services to
Diamond Bar and numerous local cities, utilizing a range of various pavement rehabilitation methods
tailored to each project's unique needs. We have found success with asphalt rubber aggregate
membrane (ARAM) pavement system, an alternative to traditional reconstruction, mill-and-overlay
treatments, slurry seal, and other restorative treatments (Outlined in Section 3: Experience &
Qualifications). Building on recent project success, our goal is to leverage a wide variety of pavement
repair and maintenance strategies to best suit the project needs. We do this while being mindful of
budget limitations and constructability challenges. Our design team is cognizant to incorporate
drainage improvements, ADA upgrades, integration of new or improved bike lanes and detailed Plans,
Specifications, & Estimate (PS&E) packages for each of the ten project segments.
398 Lemon Creek Drive, Suite E
Walnut, California 91789
www.rkagroup.com
office: (909) 594-9702 | Fax: (909) 594-2658
COVER LETTERCOVER LETTER
2
November 10, 2025
Re: Proposal for City Project No. S1261 — Page 2 of 2
Project Strategy Team. This project will be led by Bobby Lin, P.E., QSD, a licensed civil engineer, who
brings over 15 years of municipal infrastructure expertise, including design and project planning for
complete streets, street rehabilitation incorporating ADA compliance and protected bike lanes to
local City streets. Bobby's project management approach is rooted in quality, collaboration, and
responsiveness. He will lead the design services for the residential, collector and arterial streets
project, while partnering closely with Diamond Bar's staff. Bobby will be supported by our skilled
and seasoned project team, as highlighted in this proposal, Section 4: Team Organization Structure.
With their well-rounded expertise across disciplines, and extensive planning, design and
construction experience, the project team works closely together to bring projects from initial
planning to successful completion.
As Principal-in-Charge, I, Cody Howing, P.E., QSD, am authorized to negotiate and execute any
contracts on behalf of the firm. I will also provide ongoing quality oversight and strategic advisement
throughout the project to ensure we meet and exceed the City's expectations. I am committed to
maintaining a strong relationship with the City and can be reached at chowing@rkagroup.com or
(909) 594-9702 for any coordination or project-related discussions.
Our team has carefully reviewed all requirements outlined in the RFP, including the draft
Professional Services Agreement, and we confirm our ability and willingness to comply with all
terms and conditions. We are prepared to be a dependable partner to meet the City 's schedule and
deliver reliable pavement rehabilitation options and complete PS&E packages that exceeds the
City’s expectations.
Thank you for your consideration. We remain invested in strengthening our trusted partnership, and
are eager for the opportunity to collaborate further in delivering impactful, lasting results for your
roadway network.
Sincerely,
RKA Consulting Group
Cody Howing, P.E., QSD
Principal-in-Charge/Owner/Director of Engineering
chowing@rkagroup.com | Office: (909) 594-9702
398 Lemon Creek Drive, Suite E
Walnut, California 91789
www.rkagroup.com
office: (909) 594-9702 | Fax: (909) 594-2658
COVER LETTERCOVER LETTER
Badillo Street Rehabilitation Project, City of Covina B Street Rehabilitation Project, City of La Verne
02 Project Approach & Scope of Work
Project Understanding
The City of Diamond Bar is seeking a qualified consultant to provide comprehensive engineering
design services for the FY 25/26 Civil Engineering Design Services project, encompassing
Residential & Collector Street Rehabilitation, Arterial Street Rehabilitation, and ADA Curb Ramp
Improvements. The goal is to develop complete, biddable, and buildable Plans, Specifications, and
Estimates (PS&E) that align with the City’s 2025 Pavement Management Program (PMP) and support
the City’s long-term pavement preservation and accessibility objectives.
RKA understands this contract includes nine (9) base projects and one (1) optional project, organized
under the following categories:
Residential & Collector Street Projects (Project 4 w/ Optional 7)
PROJECT APPROACH & SCOPE OF WORK
3
These projects encompass Areas 5 and 6
under the City’s 2025 Pavement Management
Program. RKA will prepare PS&E packages for
the rehabilitation of residential and collector
streets identified within these areas.
Pavement treatments may include slurry seal,
chip seal, grind and overlay, full-depth
reclamation (FDR), localized dig-outs, or
other appropriate preservation or
rehabilitation methods determined through
field verification and condition assessment.
As part of each project, all existing
cross-gutters will be evaluated, and
reconstruction will be recommended where
drainage deficiencies or nonstandard
conditions are identified, provided adequate
longitudinal grade allows for correction.
Arterial Street Projects (Projects 2 & 5 w/ Optional 8, 9, & 10)
This work includes the rehabilitation of the City’s primary arterial corridors, including Grand Avenue,
Diamond Bar Boulevard, Pathfinder Road, Temple Avenue, Avenida Rancheros, and Brea Canyon
Road. RKA will verify existing pavement condition data, conduct field inspections, and finalize
pavement rehabilitation strategies that are both cost-effective and durable. Each arterial segment
will evaluate bike facility designs that are consistent with the City’s General Plan Circulation Element,
Complete Streets policies, and latest design standards. The resulting PS&E packages will ensure
constructability, maintain traffic operations, and integrate multimodal mobility where feasible.
PROJECT APPROACH & SCOPE OF WORK
PROJECT APPROACH & SCOPE OF WORK
4
Curb ramp improvements will be
evaluated within Areas 1, 6, and 7 as
identified in the PMP document. RKA
will assess existing curb ramps in each
area and identify eight (8) intersections
per area for upgrades or reconstruction
to achieve full ADA compliance. RKA
understands that construction of these
improvements will be funded through
the Community Development Block
Grant (CDBG) program will ensure the
project will fully satisfy all federal
requirements.
RKA appreciates the opportunity to assist the City in advancing its pavement rehabilitation and
accessibility programs. Our team is committed to delivering designs that extend pavement life,
enhance safety and mobility, and uphold the City’s Complete Streets principles to serve all roadway
users efficiently and equitably.
Project Approach
Our project approach focuses on data-driven pavement design, cost-effective rehabilitation
strategies, and practical constructability solutions that reduce construction impacts and align with
City’s goals. Our team will work closely with City staff to ensure each PS&E package reflects
site-specific conditions, community needs, and the City’s long-term maintenance priorities.
The following highlights critical elements that will be essential to delivering each project
successfully:
Pavement Rehabilitation
We will utilize the City’s 2025 Pavement
Management Program (PMP) as the foundation
for implementing pavement rehabilitation
strategies. The objective for each project is to
maintain or improve pavement condition
indices (PCI) into the “good” category while
delivering cost-effective designs that remain
within the City’s defined construction budgets.
Recognizing that pavement conditions vary
significantly among project corridors, our team
understands that a single, uniform rehabilitation
treatment is rarely the most efficient or
technically sound solution. Accordingly, our
team will collaborate closely with City staff
during preliminary engineering and project
planning to evaluate pavement performance,
identify localized deficiencies, and determine
the most appropriate rehabilitation method for
each street segment.
Curb Ramp Projects (Projects 1 & 3 w/ Optional 6)
PROJECT APPROACH & SCOPE OF WORK
5
To support these design decisions, RKA’s subconsultant, Converse Consultants, will perform a
detailed geotechnical investigation that includes:
- Pavement coring to verify section thicknesses and subgrade conditions
- R-Value and material property testing to assess pavement structure and support capability
- Development of rehabilitation alternatives
Our design process integrates performance-based pavement engineering, constructability analysis,
and budget management to deliver rehabilitation solutions that maximize pavement service life and
long-term value for the City.
Curb Ramp ADA Compliance
Ensuring ADA compliance will be a core component
across all projects in this program. Our team
possesses deep technical expertise with current
ADA and Public Rights-of-Way Accessibility
Guidelines (PROWAG) standards, enabling us to
design curb ramp improvements that achieve both
regulatory compliance and real-world usability and
bring extensive hands-on experience with ADA
improvements in complex topographic conditions,
including steep residential areas such as Area 7.
Arterial Streets Bike Lanes
For each Arterial Streets project, RKA will evaluate the design of bike lanes consistent with the
City’s complete streets policy and general plan circulation element. Our preliminary field
observations note the existing bike facility for each project arterial:
PROJECT APPROACH & SCOPE OF WORK
6
Class IV bike lanes will be included as part of this evaluation as a modern approach to bikelane
design with careful consideration to impacts to existing conditions such as site distance issues.
Where existing roadway widths present geometric limitations, RKA will explore alternative
treatments such as lane width reduction, parking adjustments, or Class III “shared lane”
transitions to maintain continuous bicycle connectivity. These design options will be reviewed
with City staff during the preliminary design phase.
Project Constructibility
Our design philosophy emphasizes
constructability and community impact
mitigation from project inception. We
understand that multiple high-traffic
corridors and sensitive land uses, including
Diamond Bar High School, Diamond Hills
Plaza, and Towne Centre Village—will require
special attention to access and phasing. Our
team has proven experience supporting
these highly impacted community projects.
Our constructability-focused design
measures include:
Phasing-Aware Design: Developing traffic control and staging strategies that minimize lane
closures and maintain two-way flow where possible.
-Coordinated PS&E Development: Producing well-integrated plans, specifications, and bid items
that reduce contractor uncertainty and potential change orders.
-Coordination with City Events and Utilities: Aligning design schedules with utility improvements,
adjacent capital projects, and community events to minimize disruptions.
-Efficient Materials and Methods: Evaluating accelerated construction techniques, such as
fast-setting concrete, precast components, and optimized pavement rehabilitation to reduce
working days and traffic impacts.
By integrating construction realities early in design, RKA ensures the City receives PS&E packages
that are not only technically sound but also readily implementable under real-world conditions.
Scope of Work
Task 1 – Project Management & Coordination
Task 1.0 – Project Management & Coordination
For All Projects
RKA's Project Manager and will serve as the primary liaison with City staff and will oversee all
aspects of project delivery, including coordination of the design team and subconsultants,
schedule and budget management, and adherence to the approved project scope. The project
schedule will be developed and maintained in Microsoft Project, with updates provided to reflect
progress, City review timelines, and key milestones. Monthly progress reports and invoices will be
submitted in accordance with City requirements to ensure transparency and accountability.
Upon receipt of the Notice to Proceed, RKA will schedule and conduct an in-person kick-off
meeting with City staff to introduce key personnel, confirm project scope and objectives, present
the project schedule and milestone goals, and establish project expectations.
PROJECT APPROACH & SCOPE OF WORK
7
RKA will facilitate as needed project progress meetings with City staff to confirm major milestones
such as acceptance of preliminary designs and at each construction document submittal. Agendas
and meeting minutes will be prepared for each meeting.
Task 2 – Data Collection
2.0 – Field Reviews
For All Projects
Our design team will conduct a comprehensive field review of the project site to verify existing
conditions. This field verification will confirm design assumptions, identify potential conflicts, and
ensure that all existing deficiencies—such as pavement distress, ADA compliance gaps, and drainage
issues—are documented and addressed in the design.
2.1 – Topographic Survey & Base Mapping
For Residential & Collector Streets Projects & Curb Ramp Projects
Base mapping for these projects will not be surveyed and built by the RKA team using data collected
through the Field Review and available existing data such as as-builts and parcel maps.
For Arterial Street Projects
RKA’s subconsultant, Kelsoe & Associates, will perform topographic survey services along each
Arterial street project. The survey will establish horizontal and vertical control at 50-foot intervals
along both project corridors and will locate all existing above-ground features within the City
right-of-way. The survey will also depict roadway centerlines, right-of-way boundaries, and property
lines in accordance with record maps and assessor’s data.
For Curb Ramp Projects
Kelsoe & Associates will also perform topographic surveying at the eight (8) selected locations,
encompassing a total of twenty-four (24) curb returns. The survey will capture all critical surface
features necessary for the successful design of ADA-compliant curb ramps. Survey data will include,
at a minimum, spot elevations along the top of curb, flow line, and sidewalk surfaces, as well as the
location and elevation of all visible above-ground features and potential design constraints within the
project limits.
2.2 – Utility Investigation
For All Projects
Following the project kick-off meeting, RKA will initiate the project utility coordination process.
As-built request letters will be developed for each utility identified as present in the project vicinity. A
project utility tracking log will be maintained to assist in summarizing utility coordination efforts and
serve as a reference in confirming the requests are met with adequate response. In the event utilities
fail to respond to the first request letter, additional letters will be sent out and alternative measures to
contact those utilities will be employed to ensure all potential utilities impacted by the work are
notified.
2.3 – Geotechnical Services
For All Projects
RKA’s subconsultant, Converse Consultants, will provide geotechnical & pavement evaluation
services to include the following:
•Field investigation coring the existing asphalt pavement for each project. The existing asphalt
pavement thickness will be measured in each core location, and the subgrade soil will be
sampled. Samples of the subgrade soil will be obtained for laboratory testing. In addition, cursory
observations of the pavement conditions will be performed, and the existing pavement
PROJECT APPROACH & SCOPE OF WORK
8
▪conditions will be photo documented.
▪Laboratory testing will be performed on subgrade soil samples to determine soil
characteristics and pertinent engineering properties that should be considered in an
engineering evaluation. Testing will include soil classification, in-place moisture/density
testing and R-Value determination.
▪A formal report will be prepared summarizing our findings. The report will include thickness
measurements of the existing asphalt and base material, descriptions of the subgrade soil
conditions, descriptions of the existing asphalt pavement conditions and recommendations
of pavement rehabilitation alternatives. The report will also include descriptions of our
percolation testing procedures and discussions regarding our test results.
2.4 – Utility Potholing Services (Optional)
For All Projects
As an optional service, RKA can provide utility potholing services to verify the horizontal and vertical
location of underground facilities that may conflict with the proposed improvements. These tasks
include:
-Preparing a recommended potholing plan based on locations of potential conflicts identified
during utility coordination and base mapping.
-Performing vacuum excavation at selected locations to expose utilities, measure size and depth,
and record material type.
-Preparing a Potholing Summary Report documenting findings, including photographs and field
data.
Task 3 – Preliminary Engineering & Project Planning
3.0 – Preliminary Technical Memo (PTM)
For All Projects
RKA will prepare a Preliminary Technical Memo (PTM) to document all technical findings, analyses,
and design recommendations developed during the early stages of project development. The PTM
will serve as the foundation for design advancement, providing the City with a comprehensive
summary of field conditions, design assumptions, and recommended strategies prior to the
preparation of detailed PS&E packages.
The PTM will consolidate key technical information and supporting data, including:
▪Pavement evaluation results and recommended rehabilitation strategies based on
geotechnical testing and field verification
▪Construction phasing and traffic control considerations to minimize construction impacts to
the community
▪Recommended ADA curb ramp upgrade locations with justification for prioritization
▪Preliminary cost estimates and treatment summaries for each project area, aligned with
available funding
The PTM will provide the City with a clear understanding of design direction, anticipated challenges,
and coordination needs before detailed design progresses. It will also identify assumptions, risks,
and opportunities to enhance constructability, maintainability, and cost efficiency.
PROJECT APPROACH & SCOPE OF WORK
9
3.1 – Arterial Bike Feasibility Analysis
For Arterial Street Projects
To evaluate the feasibility of bicycle facilities along each project Arterial, RKA will prepare a
conceptual design exhibit on satellite aerial comparing existing and proposed cross sections for
each segment. The evaluation and concept development will be guided by the CA MUTCD, NACTO
Urban Bikeway Design Guide, and recognized industry best practices to ensure the proposed
configurations meet current safety, operational, and multimodal accessibility standards.
3.2 – Caltrans Encroachment Permit
For Arterial Street Projects 2, 5, & 10 Only
Improvements along the Arterial streets for these projects will encroach into Caltrans R/W at the
off/on ramp connectors. RKA will serve as the primary liaison for all Caltrans coordination,
including:
•Preparing and submitting design plans, technical exhibits, and supporting documentation for
Caltrans review.
•Coordinating with the District Permit Office to determine requirements for encroachment permits
and related approvals.
•Responding to Caltrans review comments and revising plans as necessary to achieve compliance
with applicable design and operational standards.
Our team will lead all efforts to obtain timely Caltrans approvals and encroachment permit
clearance, ensuring the project remains on schedule and the final PS&E is fully compliant with
Caltrans design, safety, and operational requirements.
3.3 – CDBG Compliance
For Curb Ramp Projects
Our team understands that construction for all curb ramp projects will be funded through the
Community Development Block Grant (CDBG) program. Accordingly, RKA will ensure that all design
and documentation efforts comply with applicable CDBG requirements and federal reporting
standards.
Services under this task will include coordination with City staff to confirm project eligibility,
incorporation of required CDBG language and notes in the bid documents, and preparation of any
supporting documentation necessary to demonstrate compliance with CDBG design, procurement,
and record-keeping requirements.
Task 4 – Construction Documents
4.0 – Construction Plans
Upon completion of the Preliminary Engineering and Project Planning phase, and confirmation of
the preferred design alternatives, our team will advance the project into final design and develop
bid-ready construction plans. Plan submittals will be provided at the 30%, 60%, and 90%
milestones. Final plans will be submitted, signed and stamped by the Project Manager.
The plans will be developed with the following assumptions:
-Plans will be prepared in accordance with the latest City, SPPWC (Greenbook), Caltrans, and CA
MUTCD standards.
-Sheet size will be 24" × 36", produced in AutoCAD (with PDFs for review at each submittal).
-ADA curb ramps/driveways: full construction details will not be provided for each location; plans
will indicate case and type with reference to standard details/special provisions.
PROJECT APPROACH & SCOPE OF WORK
10
For Curb Ramp Projects
For the locations identified and confirmed with the City receiving curb ramp upgrades, full
construction details will be provided in the construction plan set.
For Arterial Streets Projects
The anticipated plan set for each Arterial Street project will include the following sheets:
-Title | General Notes | Typical Sections | Street Improvement Plans | Construction Details | Signing
& Striping Plans
It is assumed full construction details will not be provided for modifications to ADA curb ramps &
driveways. The plans will indicate case and type with reference to standard details/special
provisions.
Plans will be submitted in PDF format and transmitted to the City electronically via email at each
submittal. The Autocad files can also be provided to the city, if requested.
4.1 – Construction Cost Estimates
For All Projects
Our team will prepare construction cost estimates for each submittal. Estimates will be organized
by bid items consistent with the plan set and special provisions. Quantity takeoffs and supporting
calculations including excel files will be maintained and can be provided upon request.
4.2 – Technical Specifications
For All Projects
RKA will prepare Technical Specifications using the latest APWA Standard Specifications for Public
Works Construction (Greenbook) and City formatting, supplemented with project-specific Special
Provisions.; RKA will assist in assembling the complete specifications package for bidding and
construction.
▪The technical specifications will be developed with the following assumptions:
▪The City is assumed to provide front-end boilerplate specifications
▪RKA will assist in assembling the complete specifications package for bidding and
construction
▪No specifications will be provided at the 30% submittal.
▪The specifications submitted at 60% will only include document outline indicating proposed
sections and special provisions.
▪The specifications submitted at 90% and Final%: will be fully detailed technical specifications
aligned with the final plans and engineer’s estimate.
Task 5 – Bid-Phase Support
5.0 Bidding Support
For All Projects
RKA will provide support to the City during the bidding and advertising period to ensure that
prospective contractors have clear and accurate information. Our team will:
▪Respond to Requests for Information (RFIs) from bidders and log questions and responses for
City records.
▪Prepare addenda, as necessary, to clarify or revise the contract documents.
▪Attend and participate in the pre-bid meeting and job walk, if requested by the City.
PROJECT APPROACH & SCOPE OF WORK
11
Task 6 – Construction Support & As-Builts
6.0 Construction Support
For All Projects
Our team will support the City throughout the construction phase to ensure design intent is
maintained and to assist with timely resolution of contractor inquiries. Our services will include:
▪Attending the pre-construction conference and up to five (5) jobsite or progress meetings, as
requested by the City.
▪Responding to contractor RFIs related to the contract plans and specifications.
▪Reviewing and providing responses/approvals to contractor submittals and shop drawings for
materials and equipment, as requested by the City.
▪Providing ongoing coordination and technical support to City staff to address design-related
issues that arise during construction.
6.1 As-Builts Development
For All Projects
Upon completion of construction, RKA will prepare record drawings based on red-lined as-built
information provided by the contractor and verified by the City. These as-built drawings will reflect
field conditions and changes made during construction and will be submitted in both electronic
(PDF and AutoCAD) and hard copy format for the City’s permanent records.
03 Experience and Qualifications
About Us
Founded in 1981, RKA Consulting Group (RKA),
is a California- based multidisciplinary civil
engineering and municipal services firm. We
have proudly provided services to more than 65
cities and public agencies throughout southern
California. With 40 professionals on staff, we
specialize in street rehabilitation,
transportation engineering, capital
improvement, traffic design, storm-water,
municipal infrastructure, and construction
management. Additionally, RKA provides
comprehensive Building & Safety services,
including plan check, permit review, and
building inspection, serving as an extension of
municipal staff.
With decades of collaborative experience, RKA
brings proven expertise in supporting local
agencies through a wide range of Capital
Improvement Projects, specifically numerous
street rehabilitation and complete streets
improvements projects, demonstrating our
commitment to mobility and accessibility for
communities. A few of our recent clients
include cities of Pomona, Covina, and South
Pasadena, outlined in this Section. Our team is
known for managing fast-faced, multi-project
environments while maintaining regulatory
compliance, budget discipline, constructibility
and community trust.
We take pride in supporting cities, like Diamond
Bar, through a shared vision, collaborative
execution and proven solutions that enhance
roadway networks for all users, improving
public safety, accessibility and mobility
throughout the community.
Core Services
We specialize in a wide range of municipal civil
engineering services, including:
•City Engineering
•Capital Improvement Projects
•Roadway Design & Rehabilitation
•ADA Compliance & Accessibility
•Plans, Specifications, & Estimates (PS&E)
•Traffic Engineering & Signal Improvements
•Water, Storm Drain, Sewer Infrastructure
•Land Development
•Regulatory Compliance
•Federally Funded Project Management
•Building & Plan Check Services
RKA Mission
RKA's mission is to exceed client expectations
by delivering reliable, high-quality, and
cost-effective solutions rooted in technical
expertise.
RKA Core Values
•Quality and Integrity
•Client-Focused Services
•Innovation and Sustainability
•Collaborative Partnerships
Firm at a Glance
•Legal Name: RKA Consulting Group
•Headquarters: 398 Lemon Creek Drive, Suite E,
Walnut, CA, 91789
•Contact: (909) 594-9702
•Email: chowing@rkagroup.com
•Website: www.rkagroup.com
•Founded: 1981
•Employees: 40
•Cities Served: 65+
•Certified CA Corp. License: #C1155995
•Small Business License: #53690
Ownership & Leadership
RKA is owned and led by three principals, David
Gilbertson, P.E., T.E., P.L.S. (President), Cody
Howing, P.E., QSD (Director of Engineering), and
Raymond Tao, P.E., C.B.O, CASp (Director of
Building and Safety), who remain actively
involved in day-to-day project oversight. They
collectively bring decades of expertise and
experience serving municipal clients, remaining
accessible, and committed to setting high
standards across every project.
Our Commitment to Excellence
We are dedicated to exceptional customer
service and responsiveness, ensuring the City's
needs are met through clear communication,
timely action, and customized solutions for each
project. As a smaller, locally rooted firm, we work
respectfully and collaboratively with City staff,
residents, and stakeholders, bringing a
solutions- oriented approach that builds trust
and fosters strong relationships. We manage
projects with professionalism, proactive
communication, and genuine care for the
communities we serve.
EXPERIENCE & QUALIFICATIONS
12
EXPERIENCE & QUALIFICATIONS
RKA proudly partners with local agencies, offering services from city engineering to full-service
municipal engineering. We are committed to providing exceptional service to our clients. The client
references listed below can attest to table our team's technical expertise, reliability, and
performance. They are available to provide additional insight into our capabilities and successful
project delivery.
Over the years, RKA has successfully provided municipal consulting services to the following local
agencies:
•Corona
•Desert Hot Springs
•Diamond Bar
•Downey
•Duarte
•Fontana
•El Centro
•Glendora
•Indio
•La Quinta
•La Verne
•Lawndale
•Manhattan Beach
•Monrovia
•Montebello
•Monterey Park
•Moreno Valley
•Norwalk
•Palm Springs
•Pasadena
•Pico Rivera
•Pomona
•Rosemead
•San Dimas
•Artesia
•Baldwin Park
•Beverly Hills
•Bradbury
•Buena Park
•Carson
•Cathedral City
•Chino
•Chino Hills
•Claremont
•Coachella
•Covina
•San Gabriel
•San Marino
•Sierra Madre
•Signal Hill
•South Gate
•South
Pasadena
•Stanton
•Torrance
•Temple City
•Walnut
Agency Name Services Provided Client Contact Information
City of Walnut
1981-Current
(44 Years)
City Engineering
Full-Service Municipal
Engineering
Melissa Barcelo, Director of Public Works
mbarcelo@ci.walnut.ca.us
(909) 595-5605
City of La Verne
1988-Current
(37 Years)
City Engineering
Full-Service Municipal
Engineering
Danny Wu, Director of Public Works
dwu@laverneca.gov
(909) 596-8726
City of Duarte
1999-Current
(26 Years)
City Engineering
As-needed Capital
Improvement Projects
Stephanie Sandoval, Public Works Manager
ssandoval@accessduarte.com
(626) 357-7931
City of San Dimas
2006-Current
(23 Years)
City Engineering
As-needed Capital
Improvement Projects
Shari Garwick, Public Works Director
sgarwick@sandimasca.gov
(909) 394-6260
City of Norco
2004-Current
(21 Years)
City Engineering
As-needed Capital
Improvement Projects
Sam Nelson, Public Works Director
snelson@ci.norco.ca.us
(951) 270-5607
City of Covina
2015-Current
(10 Years)
Contract Engineering
As-needed Capital
Improvement Projects
Rafael Fajardo, City Engineer/Public Works
Director
rfajardo@covinaca.gov
(626) 384-5400 13
EXPERIENCE ACROSS SOUTHERN CALIFORNIA
CLIENT REFERENCES
Design Cost: $173,000
Construction Start Date: Estimated September 2022
Construction Completion Date & Construction Cost: RKA provided design services only
RKA provided comprehensive engineering design services for the City of Downey’s multi-phase
Residential Streets Pavement Rehabilitation Program, covering Area 5, with the goal to extend
pavement service life, improve surface conditions, and enhance ADA accessibility across a mix of
collector and local streets within predominantly residential neighborhoods. RKA led field
assessments, topographic surveying, project management, utility coordination, ADA compliance
reviews, preliminary and final PS&E documents, and value-engineered street rehabilitation strategies
such as slurry seal, cape seal, mill and overlay, and 4” full-depth reconstruction. We selected the
ARAM system to support durability and cost-effective solution for the restoration of these streets. We
managed coordination with utilities and proactively supported the City in prioritizing repairs based
on budget constraints and PCI analysis, with the scope also including concrete spot repairs,
sidewalk trip hazard mitigation, curb ramp upgrades, and drainage review. RKA worked closely with
City staff from initial street selection in the Area 5 limits, through final bid-ready construction
documents, ensuring constructability, cost efficiency, and minimal disruption to residents. Our
construction support and engineering oversight ensured that all improvements were delivered to the
highest standards of quality, fully aligned with City specifications and expectations.
Agency Project Reference
City of Downey: Matt Baumgardner, Director of Public Works
mbaumgardner@downeyca.org| (562) 869-7331
City of Downey Capital Improvement Project No. 22-20 Residential Streets Pavement Rehabilitation - Area 5
14
Project Relevance
•Pavement Rehabilitation
•ARAM System
•Residential Streets
•ADA Compliant Sidewalks & Ramps
•Construction Support
•Utility and Agency Coordination
•Plans Specifications & Estimate (PS&E)
Project Team
Project Manager: Cody Howing, PE, QSD
chowing@rkagroup.com | (909) 594-9702
Assistant Engineer: Samuel Kala, EIT
Quality Control: Michael Lee PE, QSD
EXPERIENCE & QUALIFICATIONS
Design Cost: $1,747,230 Construction Start Date: October 2024
Construction Completion Date: On-Going
Construction Cost: $8.3 million
Our team provided comprehensive design engineering services for the Garey Avenue
Rehabilitation project, helping the City of Pomona achieve its goals for mobility, beautification,
and infrastructure reliability. The project improved roadway conditions, enhanced pedestrian
access and routes, and introduced beautification elements that contributed to a more functional
and attractive corridor. The team developed the Plans, Specifications, and Estimates (PS&E) to
convert the roadway into a four-lane divided street, incorporating new landscaped medians with
irrigation improvements. As the lead consultant, we supported the urgent project requirements
and funding deadlines to support the project funding compliance and reimbursements. By
managing the project through design, compliance, and coordination with all stakeholders,
including subconsultants, we delivered constructible, cost-efficient solutions which supported
timely delivery and long-term community benefit.
Agency Project Reference
City of Pomona: Matt Pilarz, P.E., Principal Civil Engineer
matt.pilarz@pomonaca.gov | (909) 620-2281
Project Relevance
•Pavement Rehabilitation Design
•Landscaped Medians
•ADA Compliant Sidewalks & Ramps
•Funding Compliance
•Traffic Signal Upgrades
•Utility and Agency Coordination
•Public Outreach
15
Project Team
Project Manager: Cesar Ortiz, PE, TE, QSD
cortiz@rkagroup.com | (909) 594-9702
Assistant Engineer: Javier Avila, EIT
Public Works Inspector: Tony Estes
Quality Control: Cody Howing, PE, QSD
City of Pomona Garey Avenue Rehabilitation - Aliso Street to Monterey Avenue
EXPERIENCE & QUALIFICATIONS
Project Highlights & Impact
•Aligned with City Goals
•Improved Pedestrian Routes
•Enhanced Mobility
•Community Beautification
•Funding Compliance
•Partnership and Responsiveness
•Timely Delivery
16
Design Cost: $30,000 Construction Cost: $120,535 Construction Start Date: March 2025
Construction Completion Date: April 2025
Our team partnered with the City of La Verne to provide civil engineering services including
professional design, funding compliance management, construction management, and inspection
services. The project involved improving many curb ramps for accessibility and compliance under
the Community Development Block Grant (CDBG). These curb ramp upgrades improved mobility,
enhanced pedestrian safety by reducing trip hazards, ensured legal compliance with federal ADA
and supported community members with an inclusive design for sustainability and long term use.
We led utility coordination by securing as-builts, identifying conflicts, and developing cost-savings
strategies during design. We managed the construction of the project with bidding support,
construction with responsive RFI handling, fair RFP processes, and oversight to minimize delays. We
maintained compliance with all federal documentation support to adhere to the CDBG guidelines
and requirements. Successfully delivered the project under budget, achieving durable infrastructure
improvements and positive community satisfaction.
Project Relevance
•Curb Ramp Improvement
•ADA Compliant Sidewalks & Ramps
•Federal Project
•Plans, Specifications & Estimate
•As-Builts & Utility Coordination
•Construction Management & Inspection
•Public Convenience
Project Highlights & Impact
•Aligned with City Goals
•Improved Mobility & Accessibility
•Sustainability
•Federal Project Detailed Reporting &
•Compliance
•Partnership and Responsiveness
•Timely Delivery
2024-25 Community Development Block Grant (CDBG) Curb Ramp Improvement Project No. 602723-24City of La Verne
Agency Project Reference
City of La Verne: Danny Wu, Director of Public Works
dwu@laverneca.gov | (909) 596-8741
Project Team
Project Manager: Cesar Ortiz, PE, TE, QSD
cortiz@rkagroup.com | (909) 594-9702
Assistant Engineer: Samuel Kala, EIT
Construction Manager: Miguel Cuyugan
Inspector: Mark Solomon
Quality Control: Cody Howing, PE, QSD
EXPERIENCE & QUALIFICATIONS
17
EXPERIENCE & QUALIFICATIONS
City of Pomona
Project Team
Project Manager: Michael Lee, PE, QSD
mlee@rkagroup.com | (909) 594-9702
Assistant Engineer: Diego Diego, EIT
Quality Control: Cody Howing. PE
Major Street Rehabilitation - 2015 Metro Call Project
Agency Project Reference
Matt Pilarz, Principal Civil Engineer
matt.pilarz@pomonaca.gov | (909) 620-2233
Design Cost: $210,000 Construction Cost: $17 million
Construction Start Date: February 2021 Construction Completion: September 2022
Recognized as a 2022 APWA Project of the Year, our team provided the design and construction
management services for this "complete street" pavement rehabilitation project. The scope covered
major collectors and arterials, including the full reconstruction of a two-mile portion of Valley
Boulevard, utilizing a sustainable and durable method, Full Depth Reclamation (FDR) to restore the
roadway. In addition to designing the signage and striping and storm drain improvements, we
implemented pedestrian safety upgrades including ADA-compliant curb ramps and a Class IV cycle
track, improving connectivity to Cal Poly Pomona and the neighboring communities. Throughout
this project, we collaborated closely with the City and coordinated proactively with several agencies
including Caltrans and Cal Poly Pomona. This project successfully restored the roadway network
with a cost-effective and sustainable solution and delivered significant enhancements to
accessibility and multimodal mobility throughout this high-traffic corridor.
Project Relevance
•Full Roadway Reconstruction
•Pavement Rehabilitation
•ADA Compliance
•Storm Drain Improvements
•Active Transportation
2022 APWA Project of the Year Award
04 Team Organization Structure
The following team members, are committed as the primary team to support the City of Diamond
Bar's Fiscal Year 2025/2026 Street Rehabilitation projects. We partner closely with trusted
subconsultants, outlined below, and will be responsible for coordination and project deliverables.
Resumes for the project team are included in this proposal.
TEAM ORGANIZATION STRUCTURE
ASSISTANT ENGINEERS
Diego Diego, EIT
Andrea Hernadez, EIT
Samuel Kala, EIT
Javier Avila Valle, EIT
Saul Gonzalez
CITY OF DIAMOND BAR
David G. Liu, PE
Director of Public Works /City Engineer
18
Kelsoe & Associates
Land Survey Subsconsultant Contact Information: Robert Kelsoe, PLS, President(951) 736-0755 | bobk@team-kelsoe.com
Kelsoe & Associates, is a full-service land surveying firm serving private and public sector clients throughout the Western United States with licenses in California, Nevada, and Utah. Founded in 1994, their team provide comprehensive surveying services with approximately 25 professionals and 8 survey crews dedicated to meet the needs of clients.
Services include: Boundary surveys, topographic surveys, as-built surveys, construction staking/layout, research and analysis, construction planning, preparing maps, aerial topographic surveys
Contact Information: Siva Sivathasan, Project Manager
(626) 930-1200 | ksivathasan@converseconsultants.com
Converse Consultants is a geotechnical engineering firm with a history of nearly 80 years
serving cities, counties, and public agencies in Southern California.
Services include: Geotechnical investigation , geotechnical observation and testing , special
inspection , and materials testing
Converse Consultants
Geotecnhical Subsconsultant
PROJECT MANAGERS
Cesar Ortiz, PE, TE, QSD
Alternates:
Bobby Lin, PE, QSD
Michael Lee, PE, QSD
PRINCIPALS-IN-CHARGE
Cody Howing, PE, QSD
QUALITY CONTROL
David Gilbertson, PE, TE, PLS
Juan Salazar, PE, QSD
ASSOCIATE ENGINEER
ENGINEER TECHNICIANS
Tyler Jung
Tanios Ghaoui
PROJECT TEAM
05 Estimated Labor Hours
ESTIMATED LABOR HOURS
19
A table is provided in the cost proposal to reflect the estimated labor hours for each task identified
in the Scope of Services, broken down by personnel role proposed for the project.
Project Role Estimated Level of
Effort (% of Project)Primary Responsibilities
Principal-in-Charge 15%
Strategic and technical direction. Resource and
advisor. Authorized to bind contracts and
represent RKA.
Project Manager 50%
Primary City contact; oversees schedule,
QA/QC, and budget. Project planning, pavement
design and analysis, project deliverables.
Associate Engineer 70%Oversee technical design, calculations, and
ensure engineering standards.
Engineering Assistants 70%Utility coordination, CAD drawing and plan
redlining, field & project support, documentation
The table below identifies each key project role and the estimated percentage of time commitment.
ESTIMATED LABOR HOURS
TIME COMMITMENT
06 Resumes & Qualifications
Our project team is composed of seasoned
professionals who bring decades of municipal
engineering experience, many whom have
spent the majority of their careers with the
firm. Uniquely, this team includes two of the
firm's owners, ensuring the City benefits from
both senior-level technical expertise and
leadership-level accountability. This continuity
and direct involvement from ownership provide
the City with a team that is both highly
qualified and deeply invested in the success of
each task order.
Key Personnel
David Gilbertson, PE, TE, PLS – Owner and
President — 39+ Years at RKA
As President, Dave provides hands-on
leadership and oversight, applying 39+ years of
civil engineering experience and technical
expertise to guide projects and build trusted
client relationships and deliver solutions that
are practical and sustainable. Dave is one of
the owners of RKA and serves as City Engineer
for several municipal clients. For this contract,
he will provide behind-the-scenes executive
support to the Principal-in-Charge, offering
depth of expertise in municipal coordination,
traffic engineering and infrastructure project
delivery.
Cody Howing, PE, QSD – Owner, Principal-in-
Charge & Director of Engineering — 18+ Years
at RKA
As one of the owners, Cody will provide
executive-level oversight to ensure all
deliverables meet Diamond Bar's design
intent, schedule, and budget objectives. He
brings 18+ years of experience delivering a
diverse range of civil engineering projects
including active transportation, roadway and
pavement rehabilitation, signing and striping
projects local municipalities. Comparable
projects include managing the City of
Downey’s CIP 22-20- Residential Streets
Pavement Rehabilitation – Area 5 and
overseeing Garey Avenue Rehabilitation- Aliso
Street to Monterey Ave in Pomona.
Cody offers a steady hand in guiding project
direction. As the Director of the Engineering
Department, he provides technical direction,
RESUMES & QUALIFICATIONS
20
strategic oversight and support to the team
throughout the project lifecycle. He will review
all major milestones through our internal
QA/QC process, ensuring plans are accurate,
constructible, and cost-effective before
submission to the City.
Project Managers
Bobby Lin, PE, QSD – Senior Project Manager —
New to RKA Team
With over 15+ years of experience, Bobby
specializes in high-visibility, multi-faceted
corridor improvement projects, including street
rehabilitation, ADA compliance, bicycle and
pedestrian protected paths, raised medians,
gateway features, and multimodal
enhancements. Bobby is skilled at navigating
design challenges, building strong partnerships
with agency staff, and delivering solutions that
align with the City’s mobility, safety, and
beautification goals. Depending on the project
schedule, he may be the City's primary point of
contact, overseeing all aspects of design
coordination, schedule management, and
agency communications.
Bobby’s extensive knowledge and experience in
similar projects, like Chino Hills Parkway
Pavement Rehabilitation and 2023-24 Annual
Arterial Pavement Rehabilitation project in
Burbank, give him the skillset to provide project
management and design strategy to these
projects. Currently managing several street
rehabilitation projects including the Valley Blvd
Pavement Rehabilitation project in the City of
Walnut, which will include multiple pavement
restoration methods including mill & overlay
and pavement reconstruction.
Michael Lee, PE, QSD – Municipal Services
Manager— 14+ Years at RKA
Michael has been working with RKA, building
his knowledge, experience, and career for 14+
years, as a licensed civil engineer. He currently
manages design development, plan
preparation, and cost estimating for many of
our city clients, while also providing in-office
hours several times a week to closely partner
with municipal staff. His portfolio includes
large-scale, complex projects such as street
rehabilitation, bicycle lane enhancements, and
pedestrian crossing improvements and most
PROJECT TEAM
21
recently, roundabouts in the City of Pomona.
Michael has delivered similar projects in scope
including multiple complex projects such as
street rehabilitation including Major Street
Rehabilitation – 2015 Metro Call Project
completed in 2022 for the City of Pomona. He is
currently managing Walnut's La Puente Road
Rehabilitation Project, which consists of an
ARAM system 3 application along with concrete
improvements and signing and striping.
He brings specialized expertise in federal and
state compliance, including Caltrans LAPM
processes, HSIP programs, labor compliance,
and grant management, positioning him as a
trusted partner in achieving regulatory alignment
and maximizing funding opportunities.
Cesar Ortiz, PE, TE, QSD – Engineering Manager
— 7+ Years at RKA
With 10+years of civil engineering experience,
Cesar leads a wide range of roadway
improvement efforts, including pavement
rehabilitation, signing and striping
improvements, ADA compliance upgrades, and
intersection enhancements. Projects include
street rehabilitation on Malvern Avenue and
Orangethrope Street in Buena Park, Garey
Avenue Rehabilitation project for City of Pomona
and B Street Rehabilitation in La Verne which
included the demolition of existing infrastructure
and construction of new sidewalks, ADA-
compliant curb ramps, and new intersection
bulb outs.
Additionally, Cesar's expertise spans to storm
drain systems, water and sewer infrastructure,
grading design, and traffic signal enhancements
including traffic control design. Cesar has served
both on our team and on the client side with the
City, bringing valuable insight from both
perspectives. At RKA, he currently serves as
Deputy City Engineer at the City of Baldwin Park,
providing leadership and technical expertise
informed by true understanding of municipal
operations and project delivery.
Juan Salazar PE, QSD – Associate Engineer —
8+ Years at RKA
Juan Salazar, P.E., QSD, is a licensed civil
engineer with over 8 years of experience in civil
engineering projects, ranging from roadway
rehabilitation, sewer infrastructure, ADA
compliance improvements, water drainage
systems and NPDES compliance. Juan brings
comprehensive expertise in construction
management, with a strong focus on building
collaborative relationships with key
stakeholders and contractors to ensure timely
and accurate project execution.
Recently, Juan managed the Street
Rehabilitation (District 4 & 5) in Pomona, which
involved pavement rehabilitation, landscaped
medians, ADA-compliant sidewalks and ramps,
traffic signal upgrades, and street lighting. He
also led the PS&E and construction
management for the widening of Bradbury Road
and Wild Rose Ave in the City of Bradbury.
Professional Licenses and Registrations
Our team maintains professional licenses and
certifications that ensure compliance with state
and federal requirements and support technical
expertise across civil engineering, traffic
engineering, land surveying, and environmental
compliance.
David Gilbertson, P.E., T.E., PLS — California
Registered Civil Engineer (#RCE 46624); Traffic
Engineer, CA (#TE2365); Professional Land
Surveyor, CA (#6941)
Cody Howing, P.E., QSD — California Registered
Civil Engineer (#RCE 86054); Qualified SWPPP
Developer, CA (#C86054); REA - Caltrans
Resident Engineer Academy Cert. of
Completion
Michael Lee, P.E., QSD — California Registered
Civil Engineer (#RCE 90601); Qualified SWPPP
Developer, CA (#C90601); REA - Caltrans
Resident Engineer Academy Cert. of
Completion
Cesar Ortiz, P.E., T.E., QSD — California
Registered Civil Engineer (#RCE 92742); Traffic
Engineer, CA (#TE-3131); Qualified SWPPP
Developer, CA (#C92742); Certifications: Water
Treatment Operator (T2 45748), Water
Distribution Operator (D3 56149)
Bobby Lin, P.E, QSD — California Registered
Civil Engineer (#RCE 85563); Qualified SWPPP
Developer, CA (#C85563)
Juan Salazar P.E, QSD — California Registered
Civil Engineer (#RCE 96617); Qualified SWPPP
Developer, CA (#C96617)
RESUMES & QUALIFICATIONS
Professional Summary
David Gilbertson, P.E., T.E., P.L.S., is a seasoned professional engineer, traffic engineer, and licensed
land surveyor with over 39 years of experience in municipal engineering and Capital Improvement
Program (CIP) management. As Owner, President and Principal-In-Charge at RKA Consulting Group,
Dave leads the company and supervises the engineering department, prioritizing quality control and
strategic advice to ensure client satisfaction and support overall project success. Dave brings a
valued combination of technical expertise, leadership, and a practical, solutions-focused approach
to infrastructure projects. He delivers consistently ensuring client satisfaction, community safety,
and high standards of quality and performance. Dave currently holds leadership roles such as City
Engineer, City Surveyor and Traffic Engineer for several Southern California cities, including
Bradbury, Norco, San Dimas and Walnut. Additionally, his expertise includes roadway
improvements, traffic signal design, grading, land development, assessment districts and managing
capital budgets and planning for multiple agencies.
Experience
•City and Traffic Engineer, City of Walnut: Responsible for the City’s Capital Improvement Program,
which includes the design and implementation of all capital projects. Supervises the review and
plan checking of all subdivisions and development projects. Responsible for the analysis and
implementation of traffic systems, signal timing, and roadway improvements to enhance public
safety and optimize traffic flow. Serves as the primary point of contact and liaison for city staff and
project stakeholders.
•City Engineer, Cities of Bradbury, Norco, San Dimas: Leads the design and management of all
Capital Improvement Programs, conducts surveys and data analysis for planning and construction
of projects, and directs the review and plan checking of subdivisions and development projects.
As City Engineer, serves as technical advisor to city leadership, attends council and public
meetings, and takes a proactive approach to addressing resident concerns.
•Contract Engineer, City of Covina: Provides development review and plan checking services for
subdivisions and private development projects in the City of Covina, ensuring compliance with
municipal codes and regulations.
•La Puente Road Rehabilitation Project, City of Walnut: Led citywide street rehabilitation project
with direct oversight of specifications, plans, and cost estimate. As part of the City's Pavement
Management Program (PMS), this project consisted of 1 mile of mill and overlay improvements
including concrete improvements, signing and striping, and traffic loop replacements.
David Gilbertson, P.E., T.E., P.L.S.
President/Owner
B.S.C.E. California State Polytechnic University, Pomona , CA
P.E. - Registered Civil Engineer, CA RCE 46624
T.E. - Traffic Engineer, CA TE2365
P.L.S. - Professional Land Surveyor, CA 6941
Specialized Disciplines: Traffic Signal Design, Traffic Operations & Data
Analysis, Land Development, Grading and Drainage System Design,
Infrastructure Design, Roadway Improvements, ADA Compliance,
Right-of-Way Engineering, City Engineering, Capital Improvement
Program Management, City Surveyor, Quality Control, Assessment
Districts Engineering
39+
Years of
Experience
39+ Years at RKA
Qualifications
22
RESUMES & QUALIFICATIONS
Professional Summary
Cody Howing, P.E., QSD, is a licensed civil engineer with over 18 years of experience in municipal
engineering, Capital Improvement Program (CIP) management, NPDES compliance and
storm-water management. As Director of Engineering and Principal at RKA Consulting Group, Cody
manages the team, advises on project strategies, and provides guidance to ensure the successful
delivery of all projects. Cody currently holds leadership roles as City Engineer for the cities of Duarte
and La Verne, managing capital budgets, infrastructure design, construction, assessment districts
and development reviews. Additionally, his expertise includes roadway improvements, traffic signal
design, grading, and land development. Cody brings an extensive background in federal and state
funding compliance, effectively managing project scopes to meet regulatory requirements. Cody is
a trusted partner and experienced resource for developing and implementing infrastructure
solutions to support city goals, surpass community expectations and adhere to all regulatory
standards.
Experience
•City Engineer, Cites of Duarte and La Verne: Responsible for the City’s Capital Improvement
Program (CIP), including the design, infrastructure planning, budgeting, and implementation of all
capital projects. Responsible for coordination with developers, reviews plans for municipal
compliance, and serves as the primary point of contact and liaison for stakeholders and staff. As
City Engineer, he serves as technical advisor to city leadership, attends council and public
meetings, and takes a proactive approach to addressing resident concerns.
•Capital Improvement Project (CIP) No. 22-20 Residential Streets Pavement Rehabilitation Project
— Area 5, City of Downey: Managed and provided comprehensive engineering design services for
the City of Downey’s multi-phase Residential Streets Pavement Rehabilitation Program, covering
Area 5, with the goal to extend pavement service life, improve surface conditions, and enhance
ADA accessibility across a mix of collector and local streets within predominantly residential
neighborhoods. Recommended the City to select the ARAM system to support durability and
cost-effective solution for the restoration of these streets.
•Major Street Rehabilitation-2015 Metro Call, City of Pomona: Managed comprehensive street
rehabilitation including pavement overlays, cold central plant recycling, median construction,
landscaping, bike lanes and infiltration trench installation. Coordinated with partners such as
Caltrans, SCRAA, and local businesses, with a focused approach to residents to ensure smooth
project execution and satisfaction.
Cody Howing, P.E., QSD
Owner, Director of Engineering and Principal-in-Charge
B.S.C.E. California State Polytechnic University, Pomona , CA
REA - Caltrans Resident Engineer Academy Cert. of Completion
P.E. - Registered Civil Engineer, CA RCE 86054
QSD - Qualified SWPPP Developer, CA C86054
Specialized Disciplines: Roadway Improvements, Right-of-Way
Engineering, ADA Compliance, Infrastructure Design, Federal and State
Funding Compliance, NPDES Compliance & Storm-water Management,
Grading and Drainage System Design, Right-of-Way Engineering, City
Engineering, Capital Improvement Program Management, Construction
Management, Quality Control, Assessment Districts Engineering
18+
Years of
Experience
18+ Years at
RKA
Qualifications
23
RESUMES & QUALIFICATIONS
Professional Summary
Bobby Lin, P.E., QSD, is a seasoned Civil Engineer with over 15 years of experience managing
public infrastructure design projects throughout Southern California. As a Project Manager, he has
led a wide range of roadway improvement efforts, including pavement rehabilitation, pedestrian
facility design, ADA compliance upgrades, and intersection enhancements. He possesses a deep
understanding of municipal design standards and is highly proficient in the application of
Greenbook specifications.
Recognized for his technical expertise and collaborative leadership style, Bobby fosters trusted
relationships with agency staff, stakeholders, and multidisciplinary design teams. His
commitment to responsive communication and efficient project delivery has consistently resulted
in cost-effective solutions that align with client goals and community needs. His leadership
continues to drive the advancement of resilient and accessible public infrastructure.
Experience
•Commercial Street Improvements and Roadway Rehabilitation, City of Santa Fe Springs: Led the
PS&E development for the rehabilitation of Shoemaker Avenue, Springdale Avenue, Wakeman
Street, and John Street within a heavily trafficked commercial district. Oversaw the design and
implementation of Full Depth Reclamation (FDR) as the pavement rehabilitation approach. The
scope of work also included redesigning curb and gutter profiles to eliminate drainage
deficiencies and reconstructing pedestrian facilities to meet current ADA standards.
•Chino Hills Parkway Pavement Rehabilitation, City of Chino Hills: Managed the PS&E
development for the rehabilitation of approximately three miles of Chino Hills Parkway, a major
arterial serving both the City of Chino Hills and the City of Chino. The project involved
implementing pavement rehabilitation strategies including slurry seal and grind-and-overlay
treatments. Additional improvements included ADA-compliant curb ramp design, updated
signing, and striping plans. Bobby led coordination efforts between both jurisdictions to ensure
seamless design integration and consistent standards across city boundaries.
•2023-24 Annual Arterial Pavement Rehabilitation Project, City of Burbank: Directed the PS&E
development for the rehabilitation of three major arterial roadways—Verdugo Avenue, Victory
Boulevard, and Alameda Avenue—throughout the City of Burbank. The project implemented
grind-and-overlay resurfacing to improve pavement condition across all corridors. Additional
scope included ADA-compliant curb ramp design, pavement dig-outs, and removal and
reconstruction of deteriorated sidewalks and driveways. Outdated striping was redesigned to
current standards, improving vehicular guidance, safety, and functionality.
Bobby Lin, P.E., QSD
Senior Project Manager
15+
Years of
Experience
New to RKA
Qualifications B.S.C.E. University of California Irvine, CA
P.E. - Registered Civil Engineer, CA -RCE 85563
QSD - Qualified SWPPP Developer, CA C85563
Specialized Disciplines: Roadway Rehabilitation, Active Transportation
Design, ADA compliance & Accessibility Improvements, Utility
Coordination, Construction Support, Project Management, Quality
Control
24
RESUMES & QUALIFICATIONS
Professional Summary
Cesar Ortiz, P.E., T.E., QSD, has over 10 years of experience in civil engineering, managing public
infrastructure design projects throughout Southern California. As Engineering Manager at RKA, he
has led a wide range of roadway improvement efforts, including pavement rehabilitation, signing
and striping improvements, ADA compliance upgrades, and intersection enhancements. Cesar's
expertise spans to storm drain systems, water and sewer infrastructure, grading design, and traffic
signal enhancements including traffic control design. Previously, as Principal Engineer for the City of
Buena Park, Cesar managed the City's Capital Improvement Program (CIP). Currently, Cesar serves
as the Deputy City Engineer for the City of Baldwin Park, with primary focus on land development
and City engineering services. Serving as a key resource for quality assurance and control, Cesar
provides technical advisement and strategic direction to address project challenges, implement
best practices and guide subconsultants, with a focus on aligning outcomes with the City's goals
and ensuring project success.
Experience
•Deputy City Engineer, City of Baldwin Park: Contract Deputy City Engineer, supervising all land
development review, issues grading permits, and administering subdivision reviews to ensure
compliance and smooth coordination between multiple stakeholders including developers,
planning, building and public works departments.
•Garey Avenue Rehabilitation Project, City of Pomona: Provided strategic direction for the design of
over two miles of roadway construction including median improvements, lighting upgrades, the
rehabilitation of 8 traffic signals and the implementation of a Class II bike lanes. Collaborated
with Caltrans to manage and coordinate improvements within the designated right-of-way,
contributing to the effective management of a key intersection segment.
•B Street Rehabilitation Project, City of La Verne: Managed PS&E for this project which included
the demolition of existing infrastructure and the construction of new sidewalks, intersection
bulb-outs, and ADA-compliant curb ramps, enhancing both pedestrian safety and accessibility.
Partnered closely with the City and other agencies to support each phase of the project, including
the installation of new curbs and gutters, fresh asphalt pavement, and thoughtfully designed
landscaping.
Cesar Ortiz, P.E., T.E., QSD
Engineering Manager
10+
Years of
Experience
7+ Years at
RKA
Qualifications B.S.C.E. California State Polytechnic University, Pomona , CA
P.E. - Registered Civil Engineer, CA -RCE 92742
T.E. - Traffic Engineer, CA, TE- 3131
QSD - Qualified SWPPP Developer, CA C92742
Certifications: Water Treatment Operator (T2 45748), Water Distribution
Operator (D3 56149)
Specialized Disciplines: Street Rehabilitation, Active Transportation Design,
ADA Compliance, City Engineering, Land Development, Traffic Engineering,
Plans, Specifications & Estimate (PS&E), Construction Management, Sewer
Design, Quality Control
25
Awards
ASCE: 2025- Los Angeles Section - Outstanding Civil Engineer in Private Sector
ASCE: 2025 - Orange County Chapter- Civil Engineer of the Year, Private Sector
ASCE: 2025- MLAB Chapter- Outstanding Civil Engineer in Private Sector
APWA: 2024- Southern California Chapter - Emerging Leader of the Year
RESUMES & QUALIFICATIONS
Professional Summary
Michael Lee, P.E., QSD, is a licensed civil engineer with over 14years of expertise in municipal
infrastructure projects. Michael leads design development, plan preparation, and cost estimating for
many of our city clients, while also providing in-office hours several times a week to closely partner
with municipal staff. His portfolio includes large-scale, complex projects such as street
rehabilitation, sewer and stormwater design, bicycle lane enhancements, and pedestrian crossing
improvements and most recently, roundabouts.
Known for his proactive, solutions-focused approach, Michael delivers strategic, cost-effective
design solutions to challenging conditions, including utility conflicts and traffic signal integration,
ensuring project goals are met without compromising efficiency or safety. He brings specialized
expertise in federal and state compliance, including Caltrans LAPM processes, HSIP programs, labor
compliance, and grant management, positioning him as a trusted partner in achieving regulatory
alignment and maximizing funding opportunities. Michael’s diverse background and collaborative
style make him a valuable asset in delivering infrastructure improvements that enhance mobility,
safety, and community quality of life.
Experience
•Complete Streets, Major Street 2015 Metro Call Project, City of Pomona: APWA Project of the Year
(2022): Managed the $9.9M “Complete Street” project, including paving restoration, pedestrian
improvements, and a bi-directional Class IV cycle track with bike-only signals. The project featured
the full reconstruction of Valley Boulevard using sustainable Full Depth Reclamation (FDR).
Coordinated with Caltrans and Cal Poly Pomona, managed change orders within limits, and
ensured successful grant reimbursement.
•District 4 And 5 Rehabilitation Project, City of Pomona: Served as Project Manager and led
coordination for all federal compliance with federal construction authorization and CEQA/NEPA
environmental clearances. Managed the design for concrete repair, asphalt overlay, and
right-of-way clearances to ensure timely completion of critical rehabilitation efforts.
•Street Residential Resurfacing - Colver Rimhurst Bridger Glentana et al Project- Phase 1, City of
Covina: Managed the design, led funding compliance management, construction support, and
inspection services. Developed cost-savings strategies during design for the resurfacing residential
streets and tailored project exhibits and optimized plan sheets for clarity and contractor efficiency.
Supported bidding and construction with responsive RFI handling, fair RFP processes, and
oversight to minimize delays.
•Duarte Active Transportation Safety Project, City of Duarte: Led project management to ensure
federal funding compliance, collaborating with several agencies including Caltrans and the
California Transportation Commission (CTC). The project included sidewalk improvements and
striping upgrades with new bike lanes to enhance pedestrian and cyclist safety.
Michael Lee, P.E., QSD
Municipal Services Manager
14+
Years of
Experience
14+ Years at
RKA
Qualifications B.S.C.E. California State Polytechnic University, Pomona , CA
P.E. - Registered Civil Engineer, CA -RCE 90601
QSD - Qualified SWPPP Developer, CA C90601
Certifications: REA- Caltrans Resident Engineer Academy Cert. of
Completion
Specialized Disciplines: Municipal Infrastructure Design & Management,
Complete Streets & Multimodal Design, Right-of-Way Acquisition, Sewer and
Storm Drain, PS&E Development, Construction Management, Community
Outreach & Stakeholder Communication, Regulatory and Grant Management
RESUMES & QUALIFICATIONS
26
Juan Salazar P.E., QSD
Associate Engineer
Juan Salazar, P.E., QSD, is a licensed civil engineer with 8 years of
experience and working at RKA, in civil engineering projects, ranging from
sewer infrastructure, roadway rehabilitation, ADA compliance
improvements, water drainage systems and NPDES compliance. Juan
brings comprehensive expertise in construction management, with a
strong focus on building collaborative relationships with key stakeholders
and contractors to ensure timely and accurate project execution. He
works effectively across disciplines to develop detailed plans,
specifications, and cost estimates, supporting successful project delivery
from concept through completion. His strengths include utility and agency
coordination, proactive field troubleshooting, and problem-solving to
maintain compliance and resolve issues efficiently. He consistently
applies a hands-on approach to quality control and has been a key
contributor to the success of numerous client projects.
Experience
•Street Rehabilitation- District 4 and 5 City and Federal Project, City of Pomona: Acted as Project
Manager and demonstrated expertise in navigating a complex $8.3 million project, including
pavement rehabilitation, landscaped medians, ADA-compliant sidewalks and ramps, traffic signal
upgrades, and street lighting. Managed cost solutions for the budget, timely deliverables, utility
and agency coordination, design, public outreach, and quality control to support project success.
•Bradbury Road/Wild Rose Avenue Street Widening Project, City of Bradbury: Project manager
responsible for the PS&E and construction management for the widening of Bradbury Road and
Wild Rose Ave. Managed utility research and relocations and coordination with multiple
subconsultants. Lead the preparation of street improvement plans, including street plan and
profiles, retaining wall design, signing and striping. Partnered closely with City management staff
for all project deliverables.
Andrea Hernandez, EIT
Assistant Engineer II
Andrea Hernandez, EIT has 5 years of experience in civil engineering,
specializing in roadway design, including both local streets and
Caltrans PS&E (Plans, Specifications & Estimates) deliverables.
Proven ability to support complex infrastructure projects with a focus
on utility mapping, conflict identification, and right-of-way resolution.
Experienced in Active Transportation Program (ATP) projects, bike
lane design, signing and striping plans, ADA compliance, pedestrian
ramp improvements and transportation initiatives. Andrea is
proficient with AutoCAD and strives to deliver high-quality,
compliant, and community-focused engineering solutions.
Experience
•San Fernando Road Beautification Phase 1 & 2, City of Glendale —Completed at Mark Thomas: As
Design Engineer, supported the scope of work to include the design of 20+ ramps to meet ADA
compliance including driveways with sidewalk, cross gutters, and curb ramps.
•ATP Cycle- Vine Avenue and B Street Bike Boulevard, City of Ontario —Completed at Mark Thomas:
As Design Engineer, supported the scope of work to include the design of 5 curb ramps to meet
ADA compliance. Additionally, supported the PM with signing and striping redlines.
Education
B.S.C.E. California State
Polytechnic University,
Pomona , CA
Certification
EIT- Engineer-in-Training
181931
5+ Years of Experience
New to RKA
27
Education
B.S.C.E. California
State Polytechnic
University, Pomona , CA
Licenses
P.E. - Registered Civil
Engineer, CA RCE
96617
QSD- Qualified SWPPP
Developer, CA C96617
8+ Years of Experience
8 Years at RKA
RESUMES & QUALIFICATIONS
Diego Diego, EIT
Assistant Engineer
Diego Diego, EIT has over 4 years of experience in civil engineering,
actively supporting design efforts on a variety of infrastructure projects,
including roadway improvements, street widening, water pipeline
upgrades, and traffic signal installations. He brings advanced
proficiency in AutoCAD, consistently producing high-quality design
plans, specifications, and cost estimates. Diego's collaborative
approach allows him to work effectively with stakeholders, utility
providers such as Southern California Edison, and the management
team to support redline reviews and coordinate utility and agency
requirements. In the field, he conducts thorough investigations and
supports permitting efforts, including Caltrans encroachment permits.
Experience
•Covina Heights Water Line Improvement, City of Covina: Prepared the plans, specifications, and
estimate (PS&E) for this water improvement infrastructure project. This project involved design,
field investigations, as-builts, along with overcoming challenges with utilities coordination /
relocation and required additional collaboration with agencies and stakeholders.
•Duarte Active Transportation Safety Project, City of Duarte: Prepared the plans, specifications,
and estimate (PS&E) for this ATP project which included constructing new sidewalks, installing
ADA-compliant curb ramps, upgrading signing and striping, and widening pathways. A major
element was reconstructing the pedestrian and bicyclist connection corridor south of the 210
Freeway.
• Trotter Trail, City of Norco: Prepared the plans, specifications, and estimate (PS&E) for the street
widening project. Partnered closely with management and City staff to support project
deliverables and incorporate any feedback and adjustments from the City to support project
goals and objectives.
Education
B.S.C.E. California State
Polytechnic University,
Pomona , CA
Certification
EIT- Engineer-in-Training
180381
4+ Years of Experience
4 Years at RKA
28
Javier Valle Avila, EIT
Assistant Engineer
Javier Valle Avila, EIT has over 3 years of experience in civil
engineering, actively supporting design efforts on a variety of
infrastructure projects, including storm drain improvements, street
and roadway improvements, water pipeline upgrades, and
environmental compliance. He is highly skilled in AutoCAD,
consistently producing high-quality design plans, specifications, and
cost estimates. Javier's collaborative approach allows him to work
effectively with stakeholders, utility providers such as Southern
California Edison, and the internal management team to support
redline reviews and coordinate utility and agency requirements.
Experience
•ATP Cycle 4, City of Pomona: Prepared the plans, specifications, and estimate (PS&E) for
roundabout and curb design project. Designed the roundabout curb geometry in partnership with
project manager and City staff to support the schedule delivery and milestone markers.
•Walnut Ranch Park, City of Walnut: Prepared the plans, specifications, and estimate (PS&E) for the
street widening project. Partnered closely with management and City staff to support project
deliverables and incorporate any feedback and adjustments from the City to support project goals
and objectives.
Education
B.S.C.E. California State
Polytechnic University,
Pomona , CA
Certification
EIT- Engineer-in-Training
180649
3+ Years of Experience
3+ Years at RKA
RESUMES & QUALIFICATIONS
Samuel Kala, EIT
Assistant Engineer
Samuel Kala, EIT is a recent civil engineering graduate, May 2025 with
internship experience at RKA for the past 2 years. He is growing
proficiency in roadway design and supports project managers with tasks
including redlining, utility coordination, and design documentation.
Samuel is proficient in AutoCAD and familiar with Caltrans standards. He
works with various design projects including signage and striping
improvements by analyzing existing conditions and proposing updated
configurations, including signage placement and lane dimensioning,
while ensuring compliance with applicable design guidelines. He is
currently supporting the La Puente Road Rehabilitation project in the City
of Walnut which includes pavement rehabilitation, curb ramp upgrades,
signing and striping. Experience
•La Puente Road Pavement Rehabilitation, City of Walnut — Project in Progress: Supporting the
Project Manager in developing driveway design and documenting existing site conditions.
Contributed to signage and striping improvements by analyzing current layouts and proposing
updated configurations aligned with Caltrans standards. Responsibilities included determining
appropriate signage locations, lane dimensions, and ensuring compliance with roadway design
guidelines.
•Valley View 5th to 6th, City of Norco —Project in Progress: Supporting the project manager
ongoing for this street rehabilitation project. Contributed to signage and striping improvements
by analyzing current layouts and proposing updated configurations aligned with Caltrans
standards. Responsibilities included determining appropriate signage locations, lane
dimensions, and ensuring compliance with roadway design guidelines.
Education
B.S.C.E. California State
Polytechnic University,
Pomona , CA
Certification
EIT- Engineer-in-Training
184724
2+ Years of Experience
2 Years at RKA
29
Saul Gonzalez
Assistant Engineer
Saul Gonzalez has 6 years of experience in civil engineering, actively
supporting design efforts across a range of capital improvement
projects, including roadway improvements, street widening, water
pipeline upgrades, and traffic signal installations. He brings
advanced proficiency in AutoCAD, consistently producing
high-quality design plans, specifications, and cost estimates. Saul
plays a key role in coordinating utility relocations, and works closely
with Southern California Edison to identify conflicts, asses relocation
needs, and develop solutions that minimize disruptions and maintain
project timelines.
Experience
•4th Street- San Bernandino to Badillo Street, City of Covina: Prepared the plans, specifications,
and estimate (PS&E) for this water improvement infrastructure project. This project involved
design, field investigations, as-builts, along with overcoming challenges with utilities
coordination / relocation and required additional collaboration with agencies and stakeholders.
•Woodward Avenue Improvements, Detroit Street to River Drive, City of Norco: Prepared the
plans, specifications, and estimate (PS&E) for the street widening project. Designed road and
striping improvements using AutoCAD Civil 3D and coordinated with utility companies for
existing relocations.
Education
B.S.C.E. California State
Polytechnic University,
Pomona , CA
Certification in
Progress
Engineer-in-Training
6+Years of Experience
6+ Years at RKA
RESUMES & QUALIFICATIONS
Professional Summary
Robert Kelose, PLS is a Licensed Land Surveyor with over three decades of experience in the land
surveying industry. He earned his licensure in 1993 and, in 1994, co-founded Kelsoe & Associates,
where he currently serves as President. Under her leadership, the firm has grown from a single
employee to a team of 25 professionals operating eight fully equipped survey crews. Kelsoe &
Associates specializes in providing comprehensive land surveying services to municipalities and
public agencies across Southern California, including design surveys, engineering support, and
construction staking.
Robert brings deep expertise in public works infrastructure projects, right-of-way engineering, and
expert witness consulting. His commitment to precision, reliability, and client service has
positioned Kelsoe & Associates as a trusted partner in the region’s development and infrastructure
initiatives.
Experience with RKA
» City of Covina, Covina Heights Resurfacing Project
» City of Covina, Street Resurfacing - Clover et al
» City of Duarte, ATP Cycle 4 Duarte Pedestrian Access
» City of Duarte, Striping Improvements Duarte & Highland
» City of Duarte, Huntington Drive Survey & Utility Research
» City of Duarte, Royal Oaks Stop Sign Warrant Analysis
» City of La Verne, Mainiero Square Improvements
» City of La Verne, Public Safety Parking Enhancements
» City of La Verne, Arrow Hwy Urban Greening Grant Project
» City of La Verne, White Avenue Street Rehabilitation
» City of Norco, Valley View- 3rd to 4th
» City of Norco, Fourth Street- SIerra Avenue to Temescal Avenue
» City of Pomona, Street Rehabilitation Districts 4 and 5
» City of Pomona, Cycle 4 ATP
» City of Pomona, Garey Avenue Rehabilitation - Aliso to Monterrey Avenue
» City of San Dimas, Horsethief Canyon Equestrian Center Improvements
Kelsoe & Associates
Subconsultant Partner - Land Surveying Services
Robert Kelsoe, PLS
30+
Years of
Experience
Qualifications
Rancho Santiago College and Riverside City College- Land Surveying Program
PLS - Registered California Professional Land Surveyor- LS 6957
PLS- Registered Nevada Professional Land Surveyor- LS 12994
Project Partner: President
Contact Information: (951) 736-0755 or bobk@team-kelsoe.com
30
RESUMES & QUALIFICATIONS
Professional Summary
Dr. Siva Sivathasan, PHD, PE, GE, DGE, F.ASCE, is a registered civil and geotechnical engineer in
California, with over 30 years of geotechnical and construction experience. He is skilled at
analyzing complex geotechnical problems and has prepared comprehensive reports with detailed
recommendations. He also has extensive knowledge of construction projects from managing
geotechnical observation and testing, special inspection and material testing, and Caltrans source
inspection services. He has been providing source inspection for major transportation projects in
Southern California. He is a subject matter expert for the California Board of Professional
Engineers, Land Surveyors, and Geologists for geotechnical engineering exam development.
Experience
•Santa Monica-Malibu Unified School District, Lincoln Middle School Athletics Field Renovation
Project, Santa Monica, CA. Project Manager. Converse completed a geoseismic/geotechnical
investigation to provide recommendations for the new track and field. The project involves the
construction of a new athletics field with a new synthetic track and field, new sports field lighting
and associated site improvements.
•City of Glendale, Beeline Transit Operation and Management and CNG Fueling Facilities,
Glendale, CA. Project Manager. Provided geotechnical investigation for new construction. The
proposed project involved construction of a new Administration and Operations Building, a
maintenance building, a CNG Fueling Facility, and associated surface parking at the Glendale
Transportation Center. The site required over-excavation and re-compaction of the upper soils.
Project Experience w/RKA:
» City of Duarte, ATP Cycle 4 Duarte Pedestrian Access
» City of La Verne, White Avenue Street Rehabilitation
» City of Monrovia, HSIP-L 5069(013) Traffic Signal Project
» City of Pomona, Street Improvements & Walking Steps Rehabilitation
Converse Consultants
Subconsultant Partner - Geotechnical Services
Siva K. Sivathasan, PHD, PE, GE, DGE, F.ASCE
30+
Years of
Experience
Qualifications PHD, Civil Engineering, University of California Davis
B.S.C.E. University of Peradeniya, Sir Lanka
M.S. Geotechnical Engineering, University of California Davis
P.E. - Registered Civil Engineer, CA -RCE 63185
Geotechnical Engineer, No. 2708
Project Partner: Principal-in-Charge /Project Manager
Contact Information:(626) 930-1200 | ksivathasan@converseconsultants.com
31
RESUMES & QUALIFICATIONS
07 Required Statements
REQUIRED STATEMENTS
32
The following statements are provided to satisfy RFP Sections G-H. Each subsection addresses
the City’s specific request.
G.Conflict of Interest
•RKA Consulting Group confirms that there are no known conflicts of interest related to this
proposal, and we are committed to maintaining transparency, integrity, and full compliance with
applicable regulations.
H.Terms and Conditions
•RKA Consulting Group affirms that our proposal is based upon and fully adheres to all the terms
and conditions outlined in the RFP.
•This proposal shall remain valid for one hundred twenty (120) days from the date of submittal to
allow staff evaluation and City Council award.
REQUIRED STATEMENTS
A Appendix - Samples of Work
SAMPLES OF WORK
33
SAMPLES OF WORK including:
•Plan Set 1: City of Diamond Bar: Diamond Bar Blvd. from Mountain Laurel Way to Pathfinder
Road — 2 pages, Signed November 9, 2020
•Plan Set 2: City of Diamond Bar: Street Improvements, Residential and Collector Street
Rehabilitation Area 2, Golden Springs Drive from Brea Canyon Road to Grand Avenue — 2
pages, Signed: November 30, 2023
Know what'sbelow.before you dig.Call
Know what'sbelow.before you dig.Call
Know what'sbelow.before you dig.Call
Know what'sbelow.before you dig.Call
Contact Information:
Cody Howing, PE, QSD
Owner, Principal-in-Charge
RKA Consulting Group
398 Lemon Creek Drive, Suite E
Walnut, CA 91789
www.rkagroup.com
(909) 594-9702
Thank you for the opportunity to submit this proposal.
We look forward to the possibility of partnering with the City to deliver
strategic, efficient, and sustainable infrastructure solutions.
Submitted to:
David G. Liu, P.E.
Director of Public Works/City Engineer
City of Diamond Bar
21810 Copley Drive
Diamond Bar, CA 91765