CNS Engineers, Inc.Work Proposal –to provide Professional Engineering
Services for the Bridge Preventative Maintenance
Program Project,
FPN BPMP-5433(022), City Project No. 2023-33
City of La Quinta
September 29 , 2025
Submitted by
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
Table of Contents
1. Cover Letter
2. References of California Government
Agencies 1
3. Staffing and Project Organization 4
3a. Key Staff and Resumes 4
3b. Project Team Organization 7
4. Subcontracting Services 10
5. Project Understanding and Approach 11
5a. Project Understanding 11
5b. Approach for Bridge Rehabilitation 12
5c. Approach for Roadway-Related Work 13
5d. Approach for Hydraulic and Scour
Analysis 15
5e. Approach for Environmental
Documentation 15
6. Scope of Services 16
7. Project Schedule 25/26
8. Disclosures 25
9. DBE Commitment
10. Acknowledgement of Insurance
Requirements (Attachment 2)
11. Non-Collusion Affidavit (Attachment 3)
12. Acknowledgement of Addenda
(Attachment 4)
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
1. Cover Letter
September 29, 2025
Attention: Ms. Carley Escarrega
City of La Quinta
78-495 Calle Tampico
La Quinta, California 92253
Subject: Work Proposal to Provide Professional Engineering Services for the Bridge Preventative Maintenance
Program (BPMP) Project in the City of La Quinta, FPN BPMP-5433(022), City CIP No. 2023-33
Dear Ms. Escarrega and Members of the Consultant Selection Panel:
CNS Engineers, Inc. (CNS) appreciates the opportunity to submit a technical proposal to provide Professional Civil
Engineering and Environmental Documentation Services for the subject BPMP Project. This proposal demonstrates
our qualifications and technical capability to provide a wide range of professional Civil Engineering services necessary
to deliver the proposed bridge project. The assembled highly qualified team, comprised of specialty subconsultants,
skilled engineers and environmental planners, has prior experience with similar projects such as the proposed BPMP
Project that requires funding (scope updating), environmental, and engineering approval from Caltrans District 8 Local
Assistance and HQ Structures Local Assistance (SLA).
We are excited about this opportunity to present our qualifications. CNS’s extensive project experience in bridge
projects in Southern California, compounded by our prior working relationship with the City of La Quinta assures the
City of La Quinta a successful project delivery. Having invested time in the review and research of all aspects of the
proposed project needs, we have developed a deep and unsurpassed understanding of the project goals and approach
which are presented in this work proposal. CNS is the consultant that prepared the original BPMP Plan Funding
Application that funds this PE Phase of the Project. We have streamlined the Caltrans comments in 2023. We are
familiar with the project site constraints.
Leading our Team is the Project Manager, Mr. Teng Ge. Mr. Ge has almost 10 years of bridge design and Caltrans
local assistance experience. He was well trained by CNS since his graduation from UCLA. Mr. Ge is currently serving
as the Deputy Project Manager for CNS’s fourth County-Wide Bridge Program On-Call Contract for RCTD, which
involves bridge design and various local assistance support. He was involved in PS&E for rehabilitation of 15 freeway
bridges on a Caltrans On-Call Contract in 2021. The most significantly, he and his colleagues delivered an identical
BPMP Final Design Project for rehabilitation of 19 bridges with RCTD this year, and the project is in advertisement.
Mr. Ge’s experience of managing and designing bridge projects ensures that the CNS Team will provide smooth
delivery that is both reliable and is the most cost-effective solution.
CNS makes no exceptions to the sample City Contract Agreement in RFP.
All information and pricing provided in the proposal is valid for at least ninety (90) days from September 29, 2025. CNS
attests that all individuals who perform work for the City on this project is free of any conflict of interest.
Firms Background, Qualifications, and Experience: CNS has been in business, focusing on bridge engineering, for
more than 20 years. CNS’s Taxpayer ID is 74-3072004. CNS is an S-Corporation incorporated in California on August
3, 2001. CNS is not a subsidiary of a parent company. The technical services of this project will be performed in our
engineering HQ office in the City of Riverside.
Mr. James Lu, as the principal-In-Charge and the Structures Manager of the Project, will be the person authorized to
negotiate and contractually bind the team to the terms of the proposal. Please do not hesitate to contact me by office
phone at (951) 687-1005 Ext. 104, cell phone at (949) 690-0089 or by email at james.lu@cnsenginc.com if you have
any questions.
Sincerely,
James J. Lu, P.E., S.E.
President / Structures Manager
☒ 1 Orchard Road, Suite 225
Lake Forest, CA 92630
Phone: (949) 588-6191
☒ 11870 Pierce Street, Suite 265
Riverside, CA 92505
Phone: (951) 687-1005
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
Page | 1
2. References of California Government Agencies
Project Reference #1 - 1ST BPMP Design PS&E (19 Bridges), Various Locations, Riverside County
Unincorporated Area, CA
Project Status: Construction E76 authorized; Project Start and End date: 2020-Ongoing; Estimated Construction
Cost: $8 million; Key Staff: James Lu, Quyet Nguyen, Teng Ge, Steve Hosford
Project Owner and References: Cesar Tolentino, Engineering Division Manager, Riverside County Transportation
Department; (951) 955-1520; CTolenti@RIVCO.ORG; Umer Ahmed, PE, Engineering Project Manager (County Bridge
Engineer), (951) 955-1637, UAhmed@RIVCO.ORG
Brief Project Description: CNS, as a prime consultant, prepared the original BPMP Plan for Caltrans programming,
Regulatory Permitting, and final design PS&E for rehabilitation of 19 bridges in the Riverside County unincorporated
area. The project included NEPA and CEQA Clearances, Regulatory Permitting, Encroachment Permitting with Flood
Control Agencies and UPRR/BNSF Railroads and updating BPMP Plan and Costs with Caltrans Local Assistance.
CNS also prepared a 2nd BPMP Plan for rehabilitation of 26 bridges, which has been accepted and programmed by
Caltrans HQ Local Program.
Proven Experience: CNS’s Identical BPMP Project for 19
Bridges with RCTD is in the process of advertisement for bids.
The final PS&E was reviewed and approved by Caltrans SLA
prior to issuance of Construction E76 Authorization.
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
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Project Reference #2 – HBP-Funded Mt. Vernon Ave. UPRR Overhead (Widening and Seismic Retrofit /
Rehabilitation), City of Colton, CA
Project Status: Ready for Bid: Project Start and End date: 2019-Ongoing; Estimated Construction Cost: $17
million; Key Staff: James Lu and Quyet Nguyen (key subconsultant for the bridge and walls)
Project Owner and References: City of Colton, Victor Ortiz, City Engineer, (909) 514-4210, vortiz@coltonca.gov
Brief Project Description: The proposed project involves
widening the existing 2-lane Mt. Vernon Avenue Overhead Bridge
to a 4-lane Major Arterial over a UPRR Railroad Yard with six live
rail tracks. Due to the tight vertical and horizontal clearances,
various alternatives were evaluated, including a full bridge
replacement option in a new alignment and a bridge widening
with deck and girder rehabilitation (selected option). Close
coordination with UPRR was conducted to streamline the
approval of design exceptions in railroad features. The project
includes seismic retrofitting of the existing structure by replacing
the existing concrete deck and eliminating the existing expansion
joints. CNS was also involved in HBP Funding Application and
the LAPG 6D process to update the project cost. Coordination
involved Caltrans District 8, HQ Structures Local Assistance,
UPRR C&M Agreement, Encroachment Permit with Caltrans.
CNS was recently awarded another Barton Road over BNSF Railroad Grade Separation as a prime consultant by
the city.
Project Reference #3 – HBP-Funded Cathedral Canyon Drive Bridge over Whitewater River, Cathedral City, CA
Project Status: Constructed in 2022; Project Start and End date: 2009-2022; Estimated Construction Cost: $24
million; Key Staff: James Lu, Quyet Nguyen, Steve Hosford
Project Owner and References: City of Cathedral City, Mr. John Corella, Director of Engineering/Public Works, (760)
770-0327, JCorella@cathedralcity.gov, 68-700 Avenida Lalo Guerrero, Cathedral City, CA 92234; Mr. Armando J.
Garcia Baldizzone P.E., City Engineer, (760) 770-0329, abaldizzone@cathedralcity.gov Brief Project Description:
CNS, as a prime consultant, was responsible for the PA&ED and PS&E phases of the project funded by Caltrans
Highway Bridge Program (HBP) funds. The project replaced an existing low-water crossing with a 600-foot-long bridge
for 4 traffic lanes. A unique channel hydraulic drop structure is proposed upstream of the bridge to provide the required
channel flow capacity and freeboard under the bridge. The structure is designed to accommodate CVWD’s Q100 PLUS
of 47,000 CFS und
er a "Levee" condition. The proposed bridge consists of four
spans and three pier walls. The project received NEPA CE
clearance from Caltrans District 8 while the city adopted
CEQA IS/MND. The right of way acquisition requires close
coordination with Agua Caliente Band of Cahuilla Indians for
construction easements to accommodate channel
improvements on allotted Indian Tribal Lands. Key elements
of the project include environmental off-site mitigation,
interaction with a golf course in the channel, extensive
architectural enhancements on the bridge railings, regional
CVLINK Bike Trail on the bridge, and bypass road.
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
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Project Reference #4 – HBP-Funded Overland Drive Bridge over Murrieta Creek, Temecula, CA
Project Status: 95% Design Completion and USACE 408 Permitting; Project Start and End date: 2022-Ongoing;
Estimated Construction Cost: $23 million; Key Staff: James Lu, Quyet Nguyen, Steve Hosford
Project Owner and References: City of Temecula, Mr. Nino Abad, Senior Civil Engineer/Public Works Department,
Phone (951) 308-6385, Nino.Abad@TemeculaCA.gov
Brief Project Description: CNS, as a prime consultant, is
responsible for the PA&ED and PS&E phases of the project
funded by Caltrans Highway Bridge Program (HBP) funds.
The project replaces an existing low-water crossing at Via
Montezuma with an all-weather 340-foot-long bridge for 4
traffic lanes at adjacent upstream Overland Drive. The project
extends Overland Drive at the intersection of Enterprise Circle
West and connects with Avenida Alvarado at the intersection
of Diaz Road in the City of Temecula. The proposed bridge
consists of two multiple-column piers and two abutments and
is designed to accommodate a 100-Year flood rate of 22,300
CFS with a minimum 2-foot freeboard. The hydraulic analysis
is to be approved by RCFC&WCD as part of Encroachment
Permitting and USACE as part of Section 408 Permitting. As
part of the Caltrans HBP funding requirements, the bridge
Type Selection Report was submitted to Caltrans Structures Local Assistance for approval. The NEPA Clearance from
Caltrans District 8 has been secured while CEQA IS/MND was adopted by the City in 2023. The environmental
documentation involves Joint Project Review (JPR) with RCA/RCTC and Wildlife Regulatory Agencies of CDFW,
USFWS, RWQCB, and USACE. A DBESP for WRMSHCP Compliance has been approved in August 2022.
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
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3. Staffing and Project Organization
3a. Key Staff and Resumes
CNS Team offers the City of La Quinta an experienced project team that has delivered similar BPMP-funded bridge
rehabilitation projects. CNS is proud to state that we have recently completed the following BPMP Projects with County
of Riverside Transportation Department (RCTD):
The 1ST BPMP Project involves 19 bridges in unincorporated area of the County of Riverside. The
project has been authorized for construction by Caltrans. Advertising for bid is in progress.
The development of the 2nd BPMP Plan for 26 bridges, which has been accepted by Caltrans and
programmed.
The project experience portion of Section 2 - References of California Government Agencies demonstrates our relevant
bridge design and rehabilitation experiences and HBP/BPMP Funding Applications. BPMP is essentially an individual
category of the Highway Bridge Program. CNS Team will be led by an experienced project manager who knows bridges
and environmental clearance with Caltrans District 8 Local Assistance. Our designated project manager has a solid
understanding of the City’s needs and Caltrans’ review and approval process (HQ SLA and District Environmental).
Our proposed PM prepared the original BPMP Plan to determine the project rehabilitation scope and prepared
response to Caltrans comments for the City of La Quinta several years ago; he knows the purpose and need and
associated technical issues of this BPMP project (herein referred to as the “Project”). Our proposed PM has been with
CNS for many years.
CNS Team members have maintained strong relationships with various local and jurisdiction agencies. Members of
the CNS Team are specialists in their respective fields. All key experienced staff have proven to us their ability to
accelerate the project schedule and provide quality products.
Project Manager and Bridge Design Lead
Key to the successful delivery of assigned tasks or projects is directly attributable
to the leadership provided by our project manager and his team’s quality work.
Mr. Teng Ge, PE is the ideal candidate to lead this bridge
rehabilitation Project because of his extensive experience
in bridge design and Caltrans Local Assistance experience
and his excellent reputation for his ability to work closely
with clients to achieve their desired goals. Teng is familiar
with the project sites since he prepared the original BPMP
Plan for Caltrans programming. He knows the latest BPMP
guidelines very well. He is currently working as the project lead on several bridge projects as
follows:
Two BPMP Projects with RCTD.
County-Wide Bridge Program with RCTD.
Design involvement in the ongoing Vista Chino and Ramona Road Bridges over Whitewater River in the
Cities of Palm Springs and Cathedral City.
I-5 Widening with OCTA in the City of Irvine (full Caltrans HQ OSFP/SLA oversight).
US-395 Widening with SBCTA in Victorville (full Caltrans HQ OSFP/SLA oversight).
Mr. Ge has been with CNS for eight years since he graduated from UCLA. Teng has been trained not only in technical
bridge design but also in bridge inspection elements and Caltrans local assistance procedures. Mr. Ge is a proactive
and highly involved project manager who will be engaged in all aspects of the assigned project from day one. He has
an impressive track record of success involving the management and preparation of engineering studies, proposals,
final plans, specifications and estimates for a variety of bridge projects.
EDUCATION:
MS, Structural Engineering,
UCLA, 2017; BS, Civil
Engineering, University of
Liverpool, UK, 2016
REGISTRATIONS:
Professional Civil Engineer,
California, 2020, No. 91354
YEARS OF EXPERIENCE: 8
YEARS WITH CNS: 8
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
Page | 5
Mr. Teng Ge is the ideal candidate to lead this project because of his commitment, availability, and his years of
outstanding bridge design experience. Teng will constantly review the project progress, conduct progress review
meetings with project leaders, and work closely with the Team to develop strategies to quickly resolve project issues
or concerns. Teng’s additional example bridge project experiences include the following:
HBP-Funded Overland Drive Low-Water Crossing Bridge Replacement over Murrieta Creek, City of Temecula,
CA: Bridge Project Engineer, responsible for bridge type selection and final design of the project to replace a low-water
crossing with a new 3-span 340-foot-long bridge over Murrieta Creek in City of Temecula. The bridge piers include
large diameter Type II pile shafts. The proposed bridge will accommodate a Q100 Flood of 28,000 CFS. The total
project cost is approximately $16 million. The project is in 90% Design Phase and ACOE 408 Permitting. The bridge
type selection report was approved by Caltrans Structures Local Assurance.
HBP-Funded Replacement of Six Historic Timer Bridges, County of Riverside, CA: Bridge Project Engineer,
responsible for bridge type selection for replacement of four timber bridges on Chuckwalla Valley Road near Desert
Center and two timber bridges on Railroad Avenue in Cabazon in County of Riverside. The bridge construction cost is
about $13 million. The project is 65% design completion.
Principal-In-Charge (Structures Manager)
Mr. James Lu, PE, SE, will support the team’s project
manager for this Project with his extensive experience with
Caltrans Local Assistance and over 25 years of outstanding
bridge design experience. Mr. Lu has extensive program
and project management experience, which James
obtained from his employment tenure with Caltrans District
7 Local Assistance as a Highway Bridge Program
coordinator.
Mr. Lu established CNS Engineers exclusively focusing on bridge engineering
services in 2001. He is currently overseeing the Bridge Program for the County
of Riverside Transportation Department. James will devote his time to this project
whenever the project needs him. James, as a working principal, will constantly
review the project progress with our project manager, attend progress review
meetings, and provide technical support in developing strategies to promptly
resolve project issues or schedule delays. Mr. Lu has been extensively involved in a dozen major large-scale bridge
projects (seven of them are Federally Funded Bridge Projects in Inland Empire within Caltrans District 8), three freeway
interchanges, and five freeway corridor improvements in Southern California for the past fifteen years. The projects
that James has been involved in include new bridges, bridge widening, and bridge rehabilitation/seismic retrofit. Mr.
Lu’s additional example bridge project experiences include the following:
HBP-Funded Widening of Mt. Vernon Overhead over UPRR, City of Colton, CA: Structures Manager, responsible
for bridge type selection, seismic retrofit evaluation, and final design for widening of a 4-span bridge over UPRR in the
City of Colton. The project is in 100% Completion and ready to bid. The estimated construction cost is $17 million.
HBP-funded Cathedral Canyon Drive Low-Water Crossing Bridge Replacement, City of Cathedral City, CA:
Project Manager, responsible for planning study, HBP funding application, PA&ED, and PS&E of the project to replace
a low-water crossing with a new 600-foot-long bridge over Whitewater River in Coachella Valley. The total project cost
is $24 million. The project was recently constructed in June 2022 and received APWA 2022 Project of the Year award.
HBP-funded Vista Chino Low-Water Crossing Bridge Replacement, City of Palm Springs, CA: Project Manager
responsible for PA&ED, and final PS&E of the project to replace a low-water crossing with a new 19-span and 2,300-
foot-long bridge over Whitewater River in Coachella Valley. The proposed bridge will accommodate Q100 Flood of
47,000 CFS. The proposed bridge requires relocation of SCE 32 power poles. The total project cost is $95 million. The
project is in the revision of 65% design phase and utility relocation.
EDUCATION:
MS, Structural Engineering, UC-
Berkeley, 1990
BS, Civil Engineering, National
Taiwan University, 1987
REGISTRATIONS:
Professional Civil Engineer,
California, 1992, No. 49364
Structural Engineer, California,
1996, No. S4027
Caltrans HQ Local Assistance
Academy – Training in LAPG,
LAPM, Bridge Inspection
YEARS OF EXPERIENCE: 33
YEARS WITH CNS: 22
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
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Bridge Design Quality Control Lead
Working closely with Teng and James, Mr. Quyet Nguyen,
PE, a Senior Bridge Engineer of CNS, will QC-review bridge
design PS&E. Mr. Nguyen has over 20 years of bridge
design experience and is very familiar with Caltrans,
AASHTO LFRD, and AREMA Standards. Quyet specializes
in the design of long-span river crossings, railroad and
highway structures. Quyet’s bridge design expertise
includes linear and nonlinear seismic analysis and has
completed dozens of complex bridge projects including four
historic arch bridges over the Los Angeles River. Mr. Nguyen has been involved
in reviewing more than 50 bridge submittals designed by other consultants as part
of CNS’s Riverside County-Wide Bridge Program. Mr. Nguyen’s additional
example bridge project experiences include the following:
HBP-Funded Vista Chino Low-Water Crossing Bridge Replacement, City of Palm Springs, CA: Bridge Design
Lead, responsible for final PS&E of the project to replace a low-water crossing with a new 19-span and 2,300-foot-long
bridge over Whitewater River in Coachella Valley.
HBP-Funded Mt. Vernon Overhead over UPRR, City of Colton, CA: Senior Bridge Engineer, responsible for bridge
type selection and final design for widening and seismic retrofitting of a 4-span bridge over UPRR in the City of Colton.
The $17 million project is in CPUC permitting. The project PS7E has been approved by Caltrans SLA.
HBP-Funded Riverside Drive (Near Zoo Drive) Bridge over Los Angeles River, City of Los Angeles: Bridge
Project Engineer, responsible for final design for widening of a historic arch bridge over Los Angeles River. The existing
380-foot-long bridge consists of 5 spans and 4 pier walls. The construction cost is $9 million and was constructed in
2016.
HBP-Funded Widening of Ramon Road Bridge at Whitewater River, City of Palm Springs, CA: Bridge Project
Engineer, responsible for preparation of bridge planning study, project study report and final design for widening of a
15-span 1,100-foot-long river crossing. The total project cost is about $46 million.
Channel Hydraulics/Scour Evaluation Lead
Mr. Roger Chung, PE, CFM, ENV SP, QSD of BKF has more than 26 years of
civil engineering experience with expertise in hydrology, hydraulic and structural
analysis for the preparation of drainage studies, drainage master plans and the
preparation of design plans, specifications, and cost
estimates for water supply and flood control facilities. Roger
has been involved in the hydraulic analysis and design of
numerous water recharge and flood control projects in San
Bernardino, Riverside, Orange, Los Angeles, San Diego,
Kern and Ventura Counties. Mr. Chung’s additional example
project experiences include the following:
CV Link | Coachella Valley Association of Governments | Coachella Valley,
California | Principal-in-Charge: The project provides alternative to Highway
111 by connecting Coachella Valley with a safer 40-mile alternative transportation
and recreational corridor along the Whitewater River for bicyclists, pedestrians
and low-speed electric vehicle. The project developed HEC-RAS hydraulic model of the Whitewater River from Palm
Springs to Salton Sea, performed bridge scour analyses at each of the bridge undercrossing, prepared scour analyses
for the concrete slope lining cutoff wall, designed water quality BMPs along the pathway at carious access points and
EDUCATION:
B.S., Environmental and Civil
Engineering, UC-Irvine,1999
REGISTRATIONS:
Professional Civil Engineer
#C65388, CA; Qualified
Stormwater Pollution Prevention
Plan Developer (QSD) #20600,
CA; Qualified Stormwater
Pollution Prevention Plan
Practitioner (QSP) #20600;
Certified Floodplain Manager
#US-19-11182
YEARS OF EXPERIENCE: 26
YEARS WITH BKF: 10
EDUCATION:
MS, Structural Engineering,
University of Southern
California, 2005
BS, Bridge and Tunnel
Engineering, Ha-Noi University,
Vietnam, 1996
REGISTRATIONS:
Professional Civil Engineer,
California, 2007, No. 71743
YEARS OF EXPERIENCE: 26
YEARS WITH CNS: 20
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
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prepared Caltrans Water Quality Assessment Report (WQAR), Location Hydraulic Study (LHS), and Storm Water Data
Report (SWDR) to obtain Caltrans encroachment permit.
Environmental Documentation Lead
Mr. Trevor Winner, a senior environmental planner of LSA,
is responsible for conducting research and assisting in
analysis for LSA’s environmental and planning projects
relating to CEQA and NEPA compliance. Mr. Wimmer
manages and assists other Project Managers in the
preparation of environmental document including Initial
Studies and EIR sections, as well as new project proposals.
He also acts as Project Manager for California High Speed
Rail projects.
Mr. Wimmer is also a lifelong avid bird watcher with both personal and professional experience participating in bird
counts and nesting bird surveys. Mr. Wimmer assists the Biological Resources group with nesting birds and other
survey fieldwork for species of concern. Mr. Wimmer also leads birding tours at the Sunnylands Annenberg Estate in
Rancho Mirage California, conducts quarterly bird surveys at the Salton Sea for Audubon California, and teaches a
Conservation of Natural Resources course at College of the Desert. Mr. Winner’s additional example project
experiences include the following:
Avenue 50 Road Improvement Project, Coachella, CA: Mr. Wimmer prepared the CEQA Initial Study/Mitigated
Negative Declaration (IS/MND) for the Avenue 50 Road Improvement Project, which involved the widening and
improvement of Avenue 50 between Calhoun Street and Harrison Street in the City of Coachella. As part of the
environmental review process, Mr. Wimmer oversaw a comprehensive suite of technical studies, managed by LSA, to
assess potential impacts across various resource areas. These studies included detailed evaluations of Air Quality,
Biological Resources, Cultural Resources, and Noise and Vibration, as well as a Phase I Hazardous Materials Initial
Site Assessment to identify any potential environmental concerns.
California High Speed Rail Authority, California High Speed Rail Project. Bakersfield to Palmdale, CA: Mr.
Wimmer supported multiple aspects of the Bakersfield to Palmdale segment of the California High-Speed Rail Project.
His work included contributing to EIR/EIS chapters, preparing meeting agendas and minutes, and assisting with the
development and management of the administrative record.
RCTC, Mid-County Parkway Contract 3 Project, Riverside County, CA: Mr. Wimmer managed the Environmental
Impact Report (EIR) revalidation process, conducted pre-construction surveys, and oversaw a range of additional
environmental tasks for the Mid-County Parkway Contract 3 Project. His efforts helped ensure continued regulatory
compliance and environmental stewardship throughout the project’s development in Riverside County.
3b. Project Team Organization
Prime Consultant
CNS Engineers, Inc. (CNS) will serve as the Prime Consultant responsible for bridge and minor roadway design, and
funding document updates for the proposed BPMP Project. We believe the City’s expectations will be exceeded by the
CNS Team’s performance as we have delivered similar BPMP projects. CNS, a California S-Corporation established
in 2001, is a consulting civil engineering firm that focuses on professional bridge engineering services. CNS has an
engineering HQ office in the City of Riverside and a branch office in the City of Lake Forest. CNS’s professional staff
include licensed Civil Roadway and Bridge/Structural Engineers.
CNS has been participating in public transportation projects for more than 20 years and has primed dozens of major
local and federally funded bridge projects in Southern California. CNS, served as the prime consultant, has the following
example relevant bridge projects (to name a few) in Southeran California, which show our bridge design experience:
EDUCATION:
B.A. in Geography/Natural
Resources & Environmental
Policy, San Diego State
University, San Diego, CA, 2013
A.A. in Geography, Mira Costa
College, Oceanside, CA,2007
YEARS OF EXPERIENCE: 17
YEARS WITH LSA: 9
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
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600-foot-long Cathedral Canyon Drive Bridge over Whitewater River in City of Cathedral City (HBP-Funded;
Constructed in June 2022; Awards: APWA 2022 Best Projects of the Year)
South Palms Canyon Drive Bridge over Tahquitz Creek (in construction).
Vista Chino over Whitewater River (90% Design and Utility Coordination).
Ramon Road over Whitewater River (100% Design).
Replacement of 6 bridges in the desert (NEPA Clearance and 65% Design).
Prime Consultant’s Technical Capability
CNS has completed planning study and final design of dozens of bridges including new bridges, bridge
widening/seismic retrofitting/rehabilitation, river crossings, railroad overheads and underpasses, rehabilitation of
existing structures, and large-diameter prefabricated steel plate tunnels. In addition to highway and bridge design, CNS
assists local agencies in preparing funding documents to secure federal HBP/BPMP funds involving new funding
applications; adjustment of cost, scope, and schedule of projects; and Request for Authorizations (RFA’s) for PE, Right-
of-Way, and Construction.
CNS has been offering professional engineering services for various public agencies in Southern California. The public
agencies include City of Los Angeles, LA Metro, OCTA, RCTC, SBCTA, County of Orange, and various cities in Inland
Empire and Coachella Valley. Our staff has the spirit of dedicating quality professional services to all assigned tasks
and to every component of projects, which leads to repeat clients. It speaks of the great confidence our clients have in
CNS’s performance.
Serving as a prime or a sub-consultant, CNS works very closely with our team partners to develop cost-effective
alternatives. We prepare various high-quality engineering study reports, deliver environmental approval and clearance,
and participate in public and technical focus meetings to obtain consensus from project stakeholders. The engineering
reports and contract documents that CNS prepared include Project Study Reports, Project Reports, Bridge Advance
Planning Study Reports, Seismic Retrofit Strategy Reports, Bridge Type Selection Reports, Feasibility Study Reports,
Value Analysis, and Plans, Specifications & Estimate (PS&E).
Prime Consultant’s Financial Management
CNS has primed on dozens of major local and federally funded highway and bridge projects with each contract value
far exceeding $1.5 million in the past fifteen years. Our projects spread in Southern California. CNS’s maximum contract
amount is $8.7 million for a $95 million Federally Funded River Bridge Project. All CNS’s contracts involve federal
funds; therefore, CNS has established the capacity of recordkeeping and reporting that complies with the applicable
Code of Federal Regulations 48, Financial Acquisition Regulations (FAR) System. CNS has Pre-Award Audits and
Acceptance IDs with Caltrans HQ Audits & Investigations Office every year. CNS’s pre-award audit documents include
CPA-certified Annual Audit Report per CFR and AASHTO ICQ with applicable supporting financial documents. CNS
has been audited by Caltrans with an Acceptance ID for FY 2024 ICR that can be used for this project.
CNS has steady financial growth. The firm neither expects nor has a history of bankruptcy, pending litigation, planned
office closures, or impending merger that may impede the firm’s ability to complete the project. Our subconsultants
also confirmed this financial strength and stability statement.
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
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Team Organization Chart
Resources &
Regulatory Agencies
Project Manager
Teng Ge 1 PE
Project Controls
Lily Huang 1 CPA
Principal-In-Charge
James Lu 1 PE, SE
Roadway Supports
Roadway, Traffic
Controls, Utilities
Steve Hosford 1 PE
Drainage & Water Quality
Roger Chung 3 PE, CFM, QSD
Limited Surveys
Davis Thresh 3 PLS
Right-of-Way/ROE
Daniela Borbe 5 PMP
Bridges & BPMP Funding
Document Update
Bridges & Funding
Documents
James Lu 1 PE, SE
Teng Ge 1 PE
Quyet Nguyen 1 PE
NEPA/CEQA Compliance
Trevor Winner 2
Biological Resources &
Regulatory Permitting
(Channel Work)
Jodi Ross-Borrego 2
Cultural Resources
(Bridges with Minor Ground
Disturbance)
Casey Tibbet 2 RPA
Hazardous Materials (ISA)
Jack Packwood 4 CIH
Firm Legend:
1 = CNS Engineers (Prime Consultant)
2 = LSA
3 = BKF
4 = Group Delta Consultants
5 = Monument
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
Page | 10
4. Subcontracting Services
CNS Team includes several specialty subconsultants that will provide professional engineering and environmental
services that are not offered by CNS Engineers. Use of those consultants is aimed at the best interest of the project
and the city. Key qualifications of the two main subconsultants are listed below:
LSA has had a local office in Coachella Valley for years and is well known to all public agencies in the region
and Caltrans. They know local environmental constraints very well. LSA is an expert in NEPA and CEQA
compliance and regulatory permitting.
BKF is currently contracted with CVAG for the CVLINK Trail Project. They possess the latest channel hydraulic
model for the entire Whitewater River and have been working with CVWD for years. BKF is one of the best
candidates for hydraulic/scour analysis to support channel improvements under CVWD’s jurisdiction.
The strategy of forming a cohesive team is based on subconsultants’ excellent reputation for delivering high quality
work, performance of past teamwork with CNS in similar bridge projects, ability to rapidly mobilize staff, extensive work
experience and familiarity with local project constraints. We acknowledge that the subconsultants will not be allowed
to change without written permission from the City. CNS and our team partners are committed to providing as-needed
labor for this Project. Our team partners, their office locations where work is to be performed, project roles are
summarized in the following table:
Firm Office Location where work
will be performed
Project Role and Responsibilities
Prime Consultant
CNS Engineers
(DBE)
City of Riverside
11870 Pierce Street, Suite 265
Riverside, CA 92505
(951) 687-1005
Project Administration, Bridge and Minor Roadway
Design, Utility Coordination, BPMP Funding
Application Update
Sub-Consultants
LSA City of Palm Springs, CA Environmental Documentation and Regulatory
Permitting
BKF Newport Beach, CA Hydraulics, Scour Evaluation, Water Quality,
Limited Ground Surveys
Group Delta Consultants
(minor supporting subconsultant) City of Irvine, CA Hazardous Materials, AC Pavement Determination
Monument (DBE)
(minor supporting subconsultant) City of Irvine, CA Right of Way (as needed but not expected), ROE (if
required)
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
Page | 11
5. Project Understanding and Approach
5a. Project Understanding
Project Need and History
The City of La Quinta in cooperation with California Department of Transportation (Caltrans) proposes to rehabilitate 5
bridges by utilizing Federal Bridge Preventative Maintenance Program (BPMP) funds (the “Project”). During the
previous planning phase, CNS worked with the city to conduct a planning study, performing field reviews, identifying
structural rehabilitation needs, and developing a BPMP Plan in 2023. The BPMP Plan was subsequently approved and
programmed by Caltrans HQ Structures Local Assistance (SLA). The Project is now authorized by Caltrans to move
forward for environmental clearance and final design PS&E to develop a contract bid document.
Bridge Preventative Maintenance Program (BPMP) is a part of the Federal Highway Bridge Program (HBP). HBP is
essentially a safety program that provides federal aid to rehabilitate or replace structurally deficient bridges that carry
public traffic. Caltrans Local Program initiated the State’s new BPMP and established the program guidelines in 2006.
The Caltrans BPMP Guidelines were recently updated in April 2024. BPMP significantly increases HBP’s funding
flexibility as HBP did not fund preventive maintenance work in the past unless the work was triggered by major
rehabilitation or bridge replacement.
Bridge Maintenance falls into two categories: “Routine” and “Preventive”. Routine maintenance, the City’s
responsibility, covers minor nonstructural work to preserve bridge components, such as graffiti removal. Preventive
maintenance, funded under BPMP, structurally extends a bridge’s service life by addressing issues before failure [i.e.,
spending a little today to save a lot tomorrow.] The latest 2024 BPMP Guidelines categorize BPMP projects into two
types: 1). BPMP Plan Development projects and 2). BPMP Bridge List projects. Introduced in the latest guidelines, the
BPMP Plan Development project provides federal aid to local agencies for evaluating their entire local bridge inventory
and assessing the needs of each structure. This is a one-time opportunity for local agencies that have not previously
completed a BPMP project, with a federal reimbursement rate of 100% of eligible Plan Development costs. The city is
in the second type project, BPMP Bridge List projects, aims to provide federal aid to local agencies specifically for
implementing preventive maintenance measures on identified bridges. This type of project aligns with the scope of
services outlined in the RFP. Under the current BPMP guidelines, the federal reimbursement rate for BPMP Bridge List
projects has been reduced from 88.53% to 80% of eligible project costs.
Knowledge of Project Programming
Programming a BPMP project may require coordination with Caltrans Structures Maintenance and Investigations
(SM&I) that inspects the City’s bridges on a regular cycle. Inspection findings are compiled in the Bridge Inspection
Records Information System (BIRIS), including Bridge Inspection Reports (BIRs), Structure Inventory and Appraisal
(SI&A) sheets, as-built plans, scour evaluations, fracture-critical inspections, etc. Project programming relies heavily
on BIRs and SI&A data sheets to identify and prioritize rehabilitation needs. With the release of the 2024 BPMP
Guidelines, eligibility requirements have changed compared to the 2015 Guidelines previously used to program the
Project. Under the previous 2015 Guidelines, the bridge’s Sufficiency Rating (SR), as listed in the BIR, must be shown
on the BPMP Plan. The 2024 Guidelines instead emphasize National Bridge Inventory (NBI) condition ratings. As
outlined in Caltrans LAPG Chapter 6, bridges are classified as Poor, Fair, or Good based on the lowest rating among
Deck (NBI Item 58), Superstructure (NBI Item 59), and Substructure (NBI Item 60). A bridge is in Poor condition if the
lowest score is 4 or less, Fair if 5 or 6, and Good if 7 or higher. The updated guidelines also require agencies to
categorize proposed work into 11 primary categories, including four subcategories specific to deck work. Certain work
items, such as bridge barrier replacement, that were eligible under the 2015 Guidelines are no longer eligible under
the 2024 program.
Unlike the 2015 BPMP guidelines, which stated that Caltrans would only accept updated BPMP Bridge Lists by January
30th of each year for adjustments, the 2024 guidelines have removed this deadline. However, under the current
guidelines, agencies are limited to a maximum of one revised BPMP Bridge List submission per calendar year in August
HMP Survey time of the year.
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
Page | 12
As an experienced consultant in BPMP projects and the interpretation of BIR, a requirement for consultant qualification
under BPMP guidelines, we are enthusiastic about this project. We are confident that the CNS Team will work closely
with the City and Caltrans to deliver the PA&ED and PS&E necessary to implement the proposed maintenance
improvements.
5b. Approach for Bridge Rehabilitation
Since the BPMP was initially developed in 2023, the condition of the listed bridges may have changed, necessitating
additional rehabilitation work. As the first order of work, the Project Team will review the latest BIR for each bridge and
conduct field reviews to identify any additional work as well as verify the currently proposed work items. Routine
maintenance work, if necessary, that is not eligible for BPMP funding is recommended to be included in the BPMP
Bridge List as “non-participating” work, so the bridge can be repaired under the same contract as the BPMP project.
This approach allows the City to benefit from reduced effort and costs by utilizing a separate single contract to address
routine maintenance work. The Project Team will seek to leverage cost efficiencies for the proposed work. Furthermore,
the 2015 version of the Caltrans BPMP Plan template - as attached to the RFP - is now outdated. The updated 2024
Bridge List template, shown below, requires agencies to provide Condition Ratings for each bridge instead of
Sufficiency Ratings. Accordingly, the Bridge List will be revised to follow the current template.
CNS Team will prepare the PS&E necessary to implement the BPMP Bridge List that is accepted and programmed by
Caltrans Local Assistance. There are 5 bridges that are included in the 2023 BPMP Bridge List.
Bridge 56C0266 (Washington Street over Whitewater River) – The scope of work for this bridge rehabilitation includes
deck sealing with high-molecular weight methacrylate, concrete spall repairs, expansion joint replacement, installation
of a missing concrete slope paving and cutoff wall in the Whitewater River and bearing pad replacement.
Deck Sealing with Methacrylate - High-molecular weight methacrylate resin will be applied to seal the bridge deck,
preventing moisture infiltration through cracks and mitigating rebar corrosion. Prior to resin application, the deck surface
will be inspected for spalls. Identified spalls will be chipped out and repaired using rapid-setting concrete. The entire
surface will then be abrasive-blasted with sand or steel shot, thoroughly vacuumed, and air-blown clean before
methacrylate resin is applied to seal cracks. This work item is usually done at nighttime with temporary traffic controls
per MUTCD, and the material will be cured in four hours. Full street closure is not necessary.
Concrete Spall Repairs - Spall repair will be performed by removing unsound concrete, saw-cutting the perimeter to
a depth of ¾ inch, cleaning and coating exposed reinforcement with a bonding agent, and restoring the section with
high-strength, non-shrink grout.
Expansion Joint Seal Replacement - The deteriorated neoprene compression seal at both abutments and Pier 4 will
be removed. The joints will be cleaned of debris and old adhesive, and spalls will be patched using the previously
mentioned spall repair method. A new joint seal will then be installed. In addition, the top four inches of the abutment
backwalls - where map cracking is present—will be removed and replaced with polyester concrete as part of the joint
seal replacement.
BPMP Bridge List Template – April 2024 Version
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
Page | 13
Concrete Slope Paving and Cutoff Wall - Field inspection identified erosion at the earthen slope in front of the North
Abutment. Although the northerly downstream slope has a concrete lining, it terminates at the bridge region. Review
of the As-Builts indicates that concrete slope paving was originally proposed at the North Abutment but omitted in the
final construction. Installation of concrete slope paving, together with a cut-off wall, is essential to protect the abutment
from undermining. The design will be based on scour depth determined from hydraulic analysis and will comply with
Coachella Valley Water District (CVWD) requirements.
Bearing Pad Replacement - Depressions of approximately ½ inch were observed at Pier 4 and the South Abutment
due to bearing deformation. Bearing pads at these locations will be replaced. All superstructure girders at each location
will be jacked simultaneously in accordance with Caltrans Standard Specifications, which allow a maximum lift of ⅛-
inch differential lift between jacks. The jacking process will follow Caltrans Standard Specifications, which only allows
a maximum lift of ½ inch above the final grade and the jacking force should accommodate both permanent dead loads
from structure and live load carried by this bridge.
Bridge 56C0577 (Highway 111 Deep Canyon Wash) – The primary rehabilitation task for this bridge is deck sealing
with high-molecular weight methacrylate, following the same process described for Bridge 56C0266.
Bridge 56C0378 (Eisenhower Drive La Quinta Channel) – The rehabilitation work for this bridge includes removing the
existing Asphalt Concrete (AC) overlay and placing a polyester concrete (PC) overlay to restore deck serviceability and
drainage.
Deck AC Overlay Removal - The design team will specify the limits of AC overlay removal. A key task in this phase is
to verify the actual thickness of the existing AC overlay, which is not shown in the as-built plans. Although the Bridge
Inspection Report (BIR) indicates a thickness of 2 inches, field verification is necessary. Removal operations must be
performed with precise depth control to avoid gouging or damaging the underlying concrete deck.
Deck Rehabilitation – Polyester Concrete Overlay - Once the deck AC overlay is removed, the deck surface will be
restored with polyester concrete overlay to prevent any drainage ponding issue on the deck. The deck will be sealed
first with methacrylate resin similar as the process described in Bridge 56C0266 to prevent any moisture infiltration
seal cracks and provide bonding between the concrete deck and polyester concrete overlay. The polyester concrete
overlay will be installed using screed equipment. The polyester concrete overlay thickness is expected to be same as
the existing AC overlay thickness, unless the coring of the existing pavement indicates the current AC overlay is
relatively thick and excess the maximum overlay thickness allowed to be placed on the existing bridge deck per
Caltrans Standards. In this case, a pavement analysis is required and the pavement at the approaches will require
grinding to lower the depth to prevent any drainage issue.
Bridge 56C0076 and 56C0498 – The rehabilitation work for these two bridges is similar, consisting primarily of
replacing joint seals and installing expansion dams.
Joint Seal Replacement with Expansion Dam Installation - Based on the as-built plans and field inspections, the
existing joints are sealed with poured sealant. These sealants can be readily removed and reinstalled. Similar to Bridge
56C0266, the joints will be cleaned, and any spalls will be patched prior to installing the new sealant. Currently, AC
covers the expansion joints with visible crack lines along the joints on the road surface. This is an old-style construction.
This AC must be removed to fully expose the joints and facilitate proper seal replacement. However, it is not
recommended to restore AC over the joints after replacement, as the AC would likely crack and allow residue to fall
into the joint, which could create future maintenance issues. Instead, a polyester concrete overlay is proposed adjacent
to the joint seal to form a firm expansion dam, without removing any portion of the backwall or deck. Additionally, the
existing AC within the paving notch at Bridge 56C0076 will be replaced with rapid-setting concrete to provide a uniform
surface for placement of the polyester concrete overlay. This approach mitigates the risk of cracked AC residue causing
long-term maintenance problems.
5c. Approach for Roadway-Related Work
Utility Coordination – Due to the nature of the proposed improvements, the likelihood of existing utilities requiring
relocation, adjustment, or removal is very low. However, to satisfy Caltrans Right of Way Certification requirements for
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
Page | 14
federal funding, it must be demonstrated that the utilities in the project sites are not impacted. Utility investigations shall
consist of using on-line Dig Alert to determine which utilities are in the vicinity of each of the bridge sites, Utility
companies listed shall be sent an initial notification letter on City letterhead informing them of the project and requesting
record information in order to confirm that no utilities are impacted by the proposed improvements. A second notice is
sent at the completion of the 65% Plans in order for the utility companies to confirm that their facilities are shown
accurately and completely and that any facilities within the vicinity of the project sites can be protected in place.
Responses from the utility companies are filed and logged.
Geotechnical Analysis – Pavement analysis is only necessary if the final overlay depth on the bridge becomes less
than the existing AC depth. Grinding of the pavement at the approaches to lower the depth will reduce the existing
structural section. This can result in a reduced pavement section that is insufficient for the character of the roadway.
Coring of the existing pavement to confirm the existing section and conducting analysis of the subgrade may occur at
Eisenhower Drive at the La Quinta Channel.
Channel Access – Access to the channel is needed only for the concrete slope protection along the north abutment
of Washington Street at Whitewater River. There is a Concrete drop structure at a 2:1 slope downstream of the bridge.
Channel access can be obtained from one of two locations. The first is from an existing access ramp at Miles Street
crossing the river located 1.3 miles west of Washington Street. Access would require driving within the soft bottom
channel for the entire length. The second is merely 500 feet east of Washington Street but is on the lower side of the
concrete drop structure. It would be anticipated that to use this route for access, a temporary earthen ramp at the drop
structure would be needed to reach the site. The access options will be discussed with CVWD.
Right of Entry – Right of Entry (ROE) for a survey crew and the encroachment permits for construction of the concrete
slope protection on the north side of Washington Street at the Whitewater River will come from CVWD.
If access to any of the other project sites is required, and goes through a private property, a Temporary Right of Entry
will be necessary. Determining if a ROE will be required to any of the project sites will occur during the preliminary
engineering phase. If any TCE’s are found to be required, they will be addressed on a case-by-case basis.
Conditional Rights of Entry for short term work, in which CVWD approves the conditions of the project is usually
sufficient when submitting a Right of Way Certification. The final Rights of Entry will require further information and
insurance from the contractor once the contractor is on board. Temporary Construction Easements (TCE’s) for lon-
term access requiring appraisals are not expected.
Right of Way Certification – LAPM Form 13-B is used where projects are federally funded and where real property
rights may be required. A Right of Entry is expected for construction of the slope protection under Washington Street
on the north side of the Whitewater River. CNS shall collect the necessary materials and fill out the form to be submitted
to Caltrans Local Assistance by the City of La Quinta.
Concrete Slope Paving – The design for protecting the north abutment of Washington Street at Whitewater River shall
be in accordance with Coachella Valley Water District’s Guideline K-2 “Bank (Slope) Protection Design Guidance.” The
purpose of the improvements is to protect north bridge abutment. The slope is concreted in the channel at the
downstream side of the bridge. The improvements shall join the existing slope pavement on the downstream side and
extend perpendicularly to the west end of the north abutment. The bottom of the cut-off wall under the channel bed
shall be designed below the minimum scour depth elevation and the top of the slope elevation shall be designed based
on the required freeboard determined by the Hydraulic Design Memo.
The City may need to enter into an agreement with CVWD for the review and approval of the concrete slope paving
and hydraulic memo, and access to the channel.
Striping Replacement - Removal of the deck surface will include removal of the existing striping. Replacement striping
plans shall be prepared. Replacement striping shall match the existing conditions. When available, the striping plans
will replicate As-Built striping plans. Otherwise, the replacement striping shall be based on field observations and
Google Earth.
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
Page | 15
Topography – The bridge topography and base plans prepared for this project shall be based on As-Built Plans and
be confirmed by field observations.
Traffic Control – The project specifications will state that the contractor is responsible for lane closures and detours
during construction. The specs will state that the Contractor is required to follow the CA MUTCD and their plans shall
be signed by a professional engineer registered in the state of California. Due to the grade differential of only around
a half of an inch, it is anticipated that traffic can remain on Washington Street over the Whitewater River during jacking
operations for the replacement of the bearing pads, as discussed elsewhere in this section.
5d. Approach for Hydraulic and Scour Analysis
Hydraulic analyses will be performed for only the Washington Street Bridge (Br. No. 56C0266) over the Whitewater
River. The other bridge repair sites will entail structural repairs or rehabilitation to concrete members. These repairs or
rehabilitation will have an insignificant effect on the existing flow conveyances over which these bridges span.
Furthermore, the concrete repairs or rehabilitation will be durable enough by nature of their concrete composition that
their long-term performance will not be dependent on flow velocities in their respective conveyances.
The scour protection measures at the Washington Street Bridge over the Whitewater River will need to withstand the
disruptive forces of flow approaching, passing through, and continuing downstream of the abutments and the bridge
piers. Therefore, detailed hydraulic analyses will be performed to determine the hydraulic forces that will act upon the
abutments in these areas of concern.
5e. Approach for Environmental Documentation
The Project involves the maintenance and repair of five (5) bridges, including four (4) bridges that consist of top-deck
work only and one (1) bridge, requiring below deck work. The project involves federal funding and will require
compliance with both the CEQA (with the City as the lead agency) and the NEPA (with Caltrans as the lead agency).
Because regulatory conditions and Best Management Practices (BMPs) would be included as part of the project, it is
anticipated that a Categorical Exemption (CE), per CEQA Guidelines Section 15301, will be prepared. For NEPA,
clearance through the Caltrans District 8 Office of Local Assistance will be required. This process would require
completion of a Preliminary Environmental Study (PES) and supporting technical studies to complete a NEPA
Categorical Exclusion (CatEx) for the project under 23 USC 326(2).
For bridges 56C0577, 56C0378, 56C0076, and 56C0498, the only technical study anticipated to be required is an Initial
Site Assessment (ISA) for Hazardous Materials.
For bridge 56C0266, in addition to hazardous materials, it is anticipated that biology, cultural, and water quality would
also need to be evaluated. For biology, this site contains features that would qualify as jurisdictional aquatic resources
which would require permitting for the U.S. Army Corps of Engineers (USACE), California Department of Fish and
Wildlife (CDFW), and Regional Water Quality Board (RWQCB). It is assumed that this project can be processed under
the Coachella Valley Multiple Species Habitat Conservation Plan (MSHCP). Because the location of bridge 56C0266
is outside of designated MSHCP Reserve areas, focused surveys for MSHCP Covered Species would not be required.
For cultural, all of the bridges have been evaluated by Caltrans as Category 5-ineligible for listing in the National
Register. Per the Caltrans Section 106 Programmatic Agreement, all work on Category 5 bridges (except for full bridge
replacement) can be done as a Screened Undertaking. Screened Undertakings are completed by Caltrans staff.
However, since the work proposed on bridge 56C0266 requires a 404 Nationwide Permit, a USACE format cultural
report will be required for USACE review, prior to completion of permitting. For Water Quality it is anticipated that a
Water Quality Memorandum will be required to satisfy Caltrans requirements.
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
Page | 16
6. Scope of Services
Task 1 – Project Management / Administration
Consultant’s project management procedures are generally outlined as follows: Upon receipt of a formal Consultant
Selection for the project, a project-specific work plan shall be developed to strategize the team resources and detailed
assignments. A cost proposal with a Work Breakdown Structure (WBS) shall be finalized for cost negotiation for the
contract. Consultant’s work plan shall typically consist of the following items - detailed scope of work; schedule; task
budget; agency contacts; team member sub-contacts, and responsibility of team design disciplines; deliverables;
project-specific requirements; and design criteria.
During the project development, the Consultant shall ensure the schedule adheres to all contractual requirements. The
schedule shall be constantly updated. The consultant shall work closely with the City on the delivery requirements.
The Consultant’s technical deliverables shall be independently QC-reviewed by senior staff prior to the submittal to the
agencies.
Consultant’s general project management task shall include management and coordination between the City,
Consultant Team, and other stakeholders. Project administration shall be conducted to ensure timely progress reporting
and billing, accurate project record keeping, monitoring of costs, progress, deliverables and adherence to quality
standards. Internal project coordination meetings shall be conducted monthly through office meetings, conference calls
and exchange of emails, to maintain good project communication. The virtual Project Development Teaming (PDT)
meetings shall be kept purposeful and concise.
This task involves close coordination among the city, agencies, and all team members. Project coordination shall be
established by frequent progress meetings. A meeting agenda shall be prepared in advance. All action items listed in
the meeting minutes shall be reviewed in every meeting. Other typical procedures include posting project issues to all
individuals; conducting as-needed biweekly progress review for all engineering plans and reports; mitigating all review
comments; and clearing communication lines to maintain the project schedule and avoid any possible surprises.
This scope includes thirty-six (36) budgeted virtual meetings that include a kick-off meeting, PDT and docus meetings.
Key staff will attend the meetings. Consultant will attend an as-needed on-site Council meeting
Deliverable(s): Invoices, Progress Reports, Work Plan including a QA/QC plan, Document Log, Schedule Updates,
Budget and Expenditure Summary, City Agreement, Subconsultant Agreements, meeting minutes, coordination
memorandums.
Phase I – Project Approval and Environmental Documents (PA&ED)
Task 2. Data Collection, Field Review, and Base Mapping
2.a Data Collection - The Consultant shall collect available technical reports, data, as-built plans, survey records, and
other information relevant to the project from the City of La Quinta, Caltrans, and other agencies, and shall identify
visible utilities within the project area. The Consultant shall also utilize La Quinta’s Public Portal for City Documents
and obtain available record drawings of the bridge approaches, with particular attention to roadway striping plans. In
addition, the Consultant shall contact CVWD to acquire channel plans.
2.b Field Review - The Consultant shall conduct a field review and a thorough site investigation with the City and/or
Caltrans Structures Local Assistance staff. The field review meeting shall assist the Consultant in verifying plan
information obtained in the data research, clarifying the project scope, documenting existing visible underground and
overhead utilities, signing and striping, structure conditions, and evaluating potential unforeseen issues that may cause
delay to the project.
2.c Right of Way Research - The Consultant shall review available record drawings including Assessor Parcel Maps
and use the on-line Map My County service to determine the location of the existing right of way at each of the project
sites. Right of Way lines and Assessor’s Parcel Numbers shall be shown on the plans.
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
Page | 17
2.d Utility Research - The Consultant shall conduct a utility search for affected utilities in the project areas. Using the
on-line Dig Alert service, the Consultant will determine which utilities are in each project vicinity. The identified utility
companies shall be emailed a notification on City Letterhead requesting information regarding existing and proposed
utilities. Using the information obtained and information from Record Information and field reviews, the Consultant shall
prepare a utility base map. The names of all utilities and points of contact shall be filed in a Utility Information Sheet
describing the location, existing facilities and potential conflicts. The purpose of the utility search is to identify potential
conflicts. No utility potholing or preparation of utility agreements are necessary at this stage.
Deliverables: Summary of data collection, bridge maintenance records and as-built plans, Utility Notification Letters,
utility information sheet, record drawings from utility companies, field review notes, photo logs.
Task 3. Survey
The Consultant will perform limited ground survey at the bridge (56C0266) to support the design of the slope lining
along the northern slope. The anticipated ground survey limits are between the top of the slope to the mostly northerly
bridge pier and approximately 100’ upstream and downstream of the bridge. The horizontal and vertical control points
for the ground survey will be based on local controls that are established for this project only.
Deliverable(s): Ground pictures and survey drawings.
Task 4. Pavement Geotechnical Analysis
Group Delta will perform limited field investigations to investigate existing AC pavement at the following bridges:
Eisenhower Drive over La Quinta Channel (56C0378):
1. Collect pavement cores from bridge deck and approach roadway and determine AC thickness.
2. Collect a shallow subgrade sample for lab testing and pavement design analysis
52nd Avenue over Coachella Canal (56C0076):
1. Collect pavement cores from bridge deck and approach roadway and determine AC thickness.
2. No subgrade sampling or testing or pavement recommendations.
Jefferson Street over Coachella Canal (56C0498):
1. Collect pavement cores from bridge deck and approach roadway and determine AC thickness.
2. No subgrade sampling or testing or pavement recommendations.
4.1 Approach and Deck Pavement Thickness Investigations: Group Delta will collect one pavement core from the
bridge deck and one pavement core from one of the approach roadways at each of the three bridges (total of 6 cores,
2 at each bridge) and determine existing AC thickness at that location. We will obtain a no-fee encroachment permit
from the City, clear utilities through Dig Alert, and drill and patch 2 pavement cores at each bridge. Cores will be
backfilled with black dyed rapid set concrete. Traffic control will be performed as needed by MUTCD. It is assumed a
site-specific traffic control plan is not required. The coring work will be performed in a single day for all three bridges.
The thickness data will be presented in a memorandum.
Deliverable: One Pavement Thickness Memorandum
4.2 Approach Pavement Analysis (Optional): As an optional task (at Eisenhower Bridge only) Group Delta will collect
a bulk sample of the existing pavement subgrade and perform testing for gradation, plasticity (Atterberg Limits),
Expansion Index (EI), an R-Value. The data will be used to develop structural section design recommendations and
analysis to determine if the City’s standard section will perform adequately under the design TI. The data and analysis
and recommendations will be presented in a Geotechnical Pavement Report.
Deliverables: Draft/Final Geotechnical Pavement Report
Task 5. Hydraulic and Scour Analysis (Br. No. 56C0266)
The hydraulic model of Whitewater River from the CVLink project will be used as the basis for this task. The models
will extend a sufficient distance upstream to include the confluence of Deep Canyon Channel and downstream of the
bridge to the drop structure. Flow characteristics along the abutments, as well as through the bridge opening will be
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
Page | 18
defined based on the results of the modeling. The models will be used to calculate the scour depth for the design of
the concrete slope lining protection cut-off wall in accordance with CVWD DDM Guideline K-3 using Blench regime
equation.
Deliverable(s): Slope lining scour calculation and memo
Task 6. Hazardous Materials (ISA and ISA Checklist)
6.1 ISA Checklist: The Consultant shall prepare an Initial Site Assessment (ISA) Checklist which will include a site
screening for hazardous materials and petroleum products using the Caltrans ISA Guidance Document. Following is
a summary of tasks:
A review of information provided by the design team;
Site reconnaissance to look for indicators of potential hazardous materials;
Online search environmental websites maintained by the State Water Resources Control Board (SWRCB) and
Department of Toxic Substance Control (DTSC); and
Completing the CALTRANS ISA Checklist.
It is assumed that one checklist is needed for all bridges. It is also assumed that every bridge requires asite
reconnaissance; however, only the bridge undergoing earthwork requires review of online environmental databases
with records of previous releases.
The deliverable shall be an ISA Checklist including a discussion of any recognized environmental conditions or areas
of concern pertaining to hazardous materials or petroleum products which could impact the project. The submittal shall
include site location maps, site visit notes, and a cover letter. The deliverable shall also provide recommendations for
additional investigation, if warranted.
Task 6.2 ISA Report (Optional): The Consultant will prepare one ISA report which will include a site assessment for
hazardous materials and petroleum products using the Caltrans ISA Guidance Document. The work will be performed
in general accordance with Federal All Appropriate Inquiry (AAI) requirements and American Society for Testing and
Materials (ASTM) E1527-21 Standard Practice for Environmental Site Assessments: Phase I Environmental Site
Assessment Process. Following is a summary of tasks:
Review of information provided by client;
Site reconnaissance to look for indicators of potential hazardous materials;
Environmental databases search and outreach to various agencies such as Regional Water Quality Control
Board, Department of Toxic Substance Control, and other City/county agencies that deal with hazardous
materials;
Review selected historical records and mapping including aerial photos and maps; and
Completing the Caltrans User Questionnaires.
It is assumed that one report is needed for all bridges. It is also assumed that every bridge requires a site
reconnaissance; however, only the bridge undergoing earthwork requires an environmental database report.
The product will be one ISA report including a discussion of any recognized environmental conditions or areas of
concern pertaining to hazardous materials or petroleum products which could impact the project. The report will also
include the site location map, site visit notes, User Questionnaire, an environmental database search report, historical
topographic maps and aerial photographs, and selected photographs from the site reconnaissance. The Consultant
will also provide recommendations for additional site investigation, if warranted.
Task 6.3 Asbestos and Lead Survey: Asbestos-containing materials (ACM) and lead-based paint (LBP) may be
present on the bridge structures. Because specific components of the structures will be removed/modified, a limited
ACM and LBP investigation must ultimately be performed in order to properly manage and dispose of the demolition
debris. Only a targeted survey is proposed for the project directed primarily towards AC overlay, expansion joint, limited
areas of concrete, and pads (if accessible).
It assumed that encroachment permits shall be provided by the City at no charge
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Deliverables: ISA checklist, ISA report (optional), asbestos and lead survey work plan, asbestos and lead survey report.
Task 7. 30% Bridge Design Plans and Estimates
Bridges: The Consultant shall finalize bridge general plans, typical sections and conceptual details to delineate the
proposed structural rehabilitation work per Caltrans guidelines. Preliminary quantity takeoff shall be performed at this
stage. The goal of this task is to provide preliminary structure plans, details and project description that can be used
as the basis to support environmental studies. The project team shall prepare the Advance Planning Study (APS) plan
sheets using the standard City CADD border. The design team shall prepare a brief Design Memo summarizing critical
assumptions and considerations involved in developing rehabilitation alternatives. The project team shall prepare a
Preliminary Cost Estimate for the bridge rehabilitation work based on approximate quantities and historical construction
costs for similar projects. It is assumed that the planning studies for all bridges shall be summarized in a single report.
Roadway and Channel: Base sheets of each bridge location are prepared at a scale of 1” = 20’ or 1” = 10’ on individual
sheets and shows the location, size, and disposition of existing utilities, the location of existing right of way and identifies
the adjacent parcel numbers. The project sites are dimensioned, including replacement lane widths. Curves and tapers
are replicated based on available plans. The preliminary Concrete Slope Protection plan is one sheet showing a plan
view at 1” = 20’ depicting the proposed limits of work and the concrete slope typical section(s). Scour depth shall be
finalized following the approval of the Hydraulic and Scour Analysis.
Deliverable(s): 30% Bridge and Roadway Plans and Construction Cost Estimate, A Design Memo.
Task 8. Environmental Approval
LSA will undertake the following subphases and subtasks for completion of the technical analyses and for the project.
Project initiation tasks will include collecting and reviewing all the information developed for the proposed project and
applicable planning and regulatory documents (e.g. City of La Quinta and Caltrans planning documents). The
Consultant will visit the site to document existing conditions within the project site and vicinity and will be available to
participate in a start-up meeting via a video or teleconference to initiate the project.
Task 8.1 Project Initiation (Project Description and PES)
8.1.1 Project Kick Off: LSA’s Project Manager and Principal in Charge will attend one virtual project kick-off meeting
with the project team. The purpose of the meeting will be to discuss project background, scope, schedule, management,
and the major project issues that have already been identified by the project team.
8.1.2 Project Description: LSA will work closely with the project team and the City to prepare a thorough Draft Project
Description to be used in the technical reports and environmental documents. The Project Description will provide the
level of detail necessary for the technical reports and environmental documents to support thorough environmental
impact analyses. For example, the Project Description will include details pertaining to the purpose of the BPMP; the
existing environmental setting; a description of the proposed project components; construction access and staging;
and other essential project and construction details. A location map and graphics illustrating the project will also be
prepared based on materials provided by the project team. LSA will provide the Draft Project Description to City staff
and project team, and a final version deemed acceptable for the technical reports and CEQA documentation will be
prepared in response to comments from the City and the project team. LSA have included up to six (6) hours of
response to comments to address City/engineer comments on the draft project description. Preparation of the technical
studies will commence after the Project Description is approved. Should the project description be altered after the
Final Project description, and initiation of the technical studies, additional scope and budget will be required
8.1.2 Project Description and PES: LSA will prepare a Preliminary Environmental Study (PES). The PES, once
completed, will be used to determine the appropriate environmental technical studies to be completed to comply with
NEPA. LSA will respond to one set of comprehensive comments on the PES from the City and Caltrans. The budget
includes up to six (6) hours for this task. Based on the project type at this time, we are anticipating technical studies to
support a NEPA CatEx. We have included up to four (4) hours for responses to comments from the City/Caltrans on
the PES.
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Deliverable(s): Draft and final project descriptions, preliminary environmental study.
Task 8.2 Technical Studies
LSA proposes to conduct the following technical studies based on our current understanding of the project discussed.
As stated earlier, ISA’s are the only technical study anticipated for bridges 56C0577, 56C0378, 56C0076, and 56C0498.
However, for bridge 56C0266 it should be noted that the technical studies identified below would be required given the
below-deck bridge work. The technical studies will be based on a Project Description prepared under Task 8.1.2 above
and design provided by the project engineer. LSA will begin preparation of the technical studies following receipt of
these project materials and confirmation that neither the Project Description nor the design will change substantially
enough to require revisions to the technical reports. In addition, we have scoped our level of effort for mapping/analysis
on receipt of the project design in AutoCAD (i.e., .dwg) format and projected into a real-world coordinate system (e.g.,
State Plane) for efficient integration into Geographic Information Systems (GIS) software.
Because the project is along 5 bridges owned and maintained by the City, LSA will need access to their right-of-way to
conduct Biological Resources and Cultural Resources surveys. This will require coordination with the City staff to allow
for right-of-entry, to be coordinated by project team.
For each technical study, LSA will provide an electronic .pdf and .docx file for the draft and final document. Revisions
will be provided in tracked changes and/or an Excel matrix.
Biological Resources
Based on a review of aerial imagery, the project site contains features that would likely qualify as jurisdictional aquatic
resources. LSA believes the following biological technical studies listed below would be required for the project.
Task 8.2.1 Jurisdiction Delineation Report: LSA biologists will identify, delineate, and map all wetlands at the project
site in accordance with the Interim Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Arid
West Region and the 1987 Corps Wetland Delineation Manual; non-wetland waters will be identified and delineated
following the procedures set forth in 33 Code of Federal Regulations 328.3(e) and using guidance found in A Field
Guide to the Identification of the Ordinary High Water Mark (OHWM) in the Arid West Region of the United States. The
delineation will also consider any additional information needs based on the State’s Wetland Definition and Procedures
for Discharges of Dredged or Fill Material to Waters of the State, as administered by the Regional Water Quality Control
Board (RWQCB). The extent of any streambeds and associated riparian areas under the jurisdiction of the CDFW per
Section 1602 of the California Fish and Game Code will also be determined and mapped. This task includes two
biologists for one day of fieldwork to complete the delineation. The results of the draft jurisdictional delineation will
require verification and approval.
LSA will prepare a technical report presenting the results of the jurisdictional delineation. The Jurisdictional Delineation
report will support the regulatory permit applications and will be included as a technical appendix to the NESMI (see
subtask 8.2.2 below). The report will quantify and map jurisdictional features, including quantifying wetlands and non-
wetland waters of the United States under the jurisdiction of the U.S. Army Corps of Engineers (USACE), waters of the
State under the jurisdiction of RWQCB, and CDFW jurisdictional areas. The report will also identify features as earthen
or concrete. This report will focus on existing conditions; it will not analyze project impacts on jurisdictional areas.
We’ve included up to 15 hours to address comments received from project team, the City, and Caltrans on the
Jurisdictional Delineation report. If response to additional rounds of comments are needed, a budget augment will be
requested.
Deliverable(s): JD (draft and final).
Task 8.2.2 Natural Environment Study Minimal Impacts (NESMI): Because the extent of project impacts are limited
and associated with an exis ng structure, LSA assumes that a NESMI will be required by Caltrans, rather than a NES
(Minimal Impacts). LSA will prepare an NESMI in accordance with the Caltrans Environmental Handbook, Volume 3
(Standard Environmental Reference [SER] SER website accessed September 2, 2025). The NESMI will document and
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evaluate the natural habitat and other land cover types on the project site and will determine whether the proposed
project would result in impacts to special-status species and/or habitats.
LSA will conduct a literature search that will include the California Native Plant Society (CNPS) Rare Plant Inventory,
the CDFW California Natural Diversity Database (CNDDB), and the United States Fish and Wildlife Service (USFWS)
Information for Planning and Consultation (IPaC) database and applicable sections of the Coachella Valley MSHCP.
Following the literature review, LSA biologists will perform a reconnaissance-level field survey of the Biological Study
Area (BSA) to assess the plants, animals, and habitats present. The biologists will map vegetation in the BSA and will
take representative site photographs to document existing site conditions. This task assumes the site visit will be
conducted concurrently with the jurisdictional delineation and all site visits costs are incurred under that task.
LSA will document the results of the literature review and a general biological survey in the NESMI and will analyze
project impacts on biological resources. The report will describe and map the vegetation within the BSA. The NESMI
will evaluate the potential for special-status species to occur based on the species reported from the project region,
the biologist’s knowledge of southern California resources, and the habitat present in the BSA. The NESMI will also
determine whether a tree ordinance applies to the BSA and if there would be any trees present that would be subject
to the ordinance. The NESMI will provide an analysis of potential project impacts (permanent and temporary) and will
identify applicable recommendations for avoidance and minimization of project impacts, and compensatory mitigation
(if needed). The Jurisdictional Delineation will be included as an appendix to the NESMI.
We’ve included up to 28 hours to address comments from the proect team, the City, and Caltrans on the report. LSA
will submit a PDF of the final report to Caltrans. If response to additional rounds of comments is needed, a budget
augment will be requested.
Deliverable(s): NESMI (draft and final).
Task 8.2.3. Water Quality Memorandum (WQM) (Optional): LSA will prepare a Water Quality Assessment
Memorandum (WQM) if approved by Caltrans for the project that follows the Caltrans December 2022 (or most current)
Water Quality Assessment Report Content and Recommended Format. The WQAR will discuss watershed and
drainage characteristics, surface receiving waters, groundwater hydrology, regulatory requirements, pollutants of
concern, receiving waters conditions, objectives, and beneficial uses, and floodplains. The WQM will also discuss
construction site, Design Pollution Prevention, and Treatment Best Management Practices (BMPs) that are applicable
to the project per Caltrans’ Storm Water Quality Handbooks Project Planning and Design Guide, to be provided by the
engineers and any Low Impact Development (LID) features that are included as part of the project to address water
quality impacts. The project’s impacts on water quality will be evaluated and avoidance, minimization, and/or mitigation
measures necessary to prevent adverse water quality impacts will be identified.
Information to be obtained from the Storm Water Data Report (SWDR; to be provided by the project engineer) and
Hydrology Report (to be provided by the project engineer) and incorporated into the WQAR includes, but is not limited
to, proposed construction and operational BMPs, disturbed soil area, new impervious surface area, impervious surface
areas to be treated from the project, existing and proposed drainage patterns, and existing and proposed rate and
volume of stormwater runoff. Information on depth to groundwater, proposed depth of excavation, the potential for
groundwater dewatering during construction, soil types, and erosion potential will be obtained from the project
Geotechnical Report (to be provided by the project engineer). Additionally, information on riparian habitat, jurisdictional
waters, and aquatic-dependent species and impacts on those biological resources will be obtained from the NESMI.
We have budgeted 6 hours for responding to comments generated during review of the Water Quality Assessment
Report.
Deliverable(s): WQM (draft and final) (Optional)
Task 8.2.4. Area of Potential Effects: LSA, in cooperation with the USACE, will define the Area of Potential Effects
(APE) for the project associated with Bridge 56C0266. To do this, LSA will need engineering data including, but not
limited to, the proposed project footprint, grading limits, staging areas, and maximum depth of excavation. The APE
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map will be used to conduct the records review and field surveys and will be included in the USACE-format cultural
resources report.
Deliverable(s): APE map (draft and final)
Task 8.2.5. Archaeological Resources Class I Records Review: LSA will conduct a cultural resources Class I
records and literature review of the APE. This will include a records search with the South Coastal Information Center
(SCIC) for the APE and a 1-mile buffer as well as a Sacred Lands File (SLF) check through the Native American
Heritage Commission (NAHC). LSA will also review online resources including, but not limited to, Government Land
Office (GLO) maps and other historic maps and aerial photographs to identify potential resources within the APE. The
results of the records search will be documented in the final report. Maps of previous survey coverage and locations
of known resources within one mile of the APE will be included in a confidential appendix.
Task 8.2.6. Built Environment (Research Evaluation Determination): Preliminary research indicates that the
concrete slope walls along Whitewater River at Bridge 56C0266 were constructed sometime after 1984 and do not
date to the historic-period (50 years ago or more). LSA will conduct research to verify the dates of construction and
later alterations to these walls and any other built environment in the APE. It is anticipated that no historic-period built
environment resources will be identified within the APE and therefore no additional work (i.e. field survey, development
of a historic context, or significance evaluation) related to the built environment will be needed. The findings of the
preliminary research would be included in the cultural resources report.
Tasak 8.2.7. Archaeological Resources Inventory Survey: LSA will conduct a cultural resources survey of the APE.
All work will be supervised by a Principal Investigator who meets U.S. Secretary of Interior’s Standards for Archaeology,
and all fieldwork will be conducted under the supervision of a qualified Field Director.
The Class III survey strategy will be informed by the results of the records search information. The Class III survey will
consist of transect intervals no greater than 15 meters and will closely inspect the surveyed areas for the presence of
precontact and historic-age (i.e., 50 years old or older) cultural resources. Areas of dense vegetation that obscures
ground visibility will be subject to modified survey methods based on field conditions in coordination with the USACE.
No subsurface testing will be conducted, and no artifacts will be collected.
LSA anticipates that the records search results for the APE and the cultural resources field survey will be negative (no
previously recorded resources will be present in the survey area and no new resources will be identified) and that no
archaeological resources will require documentation on California Department of Parks and Recreation (DPR) 523
forms.
Task 8.2.8. Cultural Resources Assessment Report: A USACE-format Cultural Resources Assessment Report will
be prepared documenting the methods and results of the research and field surveys. The report will include a summary
of the environmental setting, regulatory framework, cultural background, including prehistory, ethnohistory, and history,
a significance evaluation if applicable, and references. The DPR forms, if any, will be attached to the report.
We’ve included up to 10 hours to address comments from the project team, the City, and USACE on the report. If more
substantive comments are provided, a budget augment may be required.
Deliverable(s): Cultural resources assessment report (draft and final)
Environmental Documentation
Task 8.2.9. CEQA NOE for CE and Memorandum: CEQA Guidelines such as Section 15301 Class 1 (Existing
Facilities). LSA will help the City of La Quinta prepare the Notice of Exemption (NOE) and supporting memorandum
for a Categorical Exemption under CEQA Guidelines Section 15301 Class 1 for the project. The form and memorandum
will be provided to the City for one round of review (each). LSA will assist the City by filing the NOE with the California
State Clearinghouse. The City is responsible for filing the NOE with the Riverside County Clerk and paying the
associated filing fee.
Deliverable(s): Memorandum to support categorical exemption (draft and final), CEQA Notice of Exemption (NOE)
(draft and final)
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Task 8.2.10. NEPA Environmental Commitment Records: It is anticipated that the NEPA document will be a CatEx
for the project under 23 USC 326(2). Caltrans processes NEPA documentation for Local Assistance Projects; as a
result, this scope assumes that LSA will not prepare the CatEx and that it will be prepared by Caltrans. Should it be
required, LSA can prepare a CatEx under a separate scope and budget. Supporting technical studies for the CatEx
are listed under Subtask 8.2.1 through 8.2.8 above.
FHWA is responsible for ensuring that avoidance and minimization measures identified during the NEPA process are
implemented in accordance with FHWA Code of Federal Regulations 23 CFR 771.109 (b). Environmental Commitment
Records (ECR) are required to track and document environmental commitments throughout the Project Delivery
process. Once the technical studies have been finalized, LSA will prepare an ECR utilizing the current Local Assistance
ECR format, or the format requested by Caltrans District 8. The ECR will provide a brief description of each measure,
identify the page where the measure can be found in the environmental document, identify the responsible party and
timing, and provide signature blocks for certification of completion of the measure.
Deliverable(s): NEPA Environmental Commitment Records (ECR).
Task 9. Regulatory Permits – Jurisdictional Waters Permitting (401, 404, and 1600)
Based on the preliminary review of aerial imagery and previous experience in the region, LSA anticipates the following
permits may be required:
A Section 404 Nationwide Permit as issued by the USACE;
A Section 401 Water Quality Certification or Waste Discharge Requirement (WDR) (or waiver) as issued by
the RWQCB; and
A Streambed Alteration Agreement under Section 1600 et seq. of the California Fish and Game Code or an
Operation of Law letter as issued by the CDFW.
LSA will prepare permit applications for the above-listed permits. LSA will also request an Approved Jurisdictional
Determination (AJD) from each agency to confirm the findings of the Jurisdictional Delineation. Each application packet
will be reviewed with the project team prior to submittal to the respective agencies. Permit packets are expected to be
complete when submitted. If there are changes to project design during or after preparation of the package, or if the
resource agencies request additional information not available to LSA prior to submittal of the permit applications, a
budget augment will be requested.
In addition to preparation of permit applications, this task includes a total of 20 hours of technical specialist time and 8
hours of support staff time to coordinate with the resource agencies. If additional time is needed, a budget augment
will be requested.
Based on current experience, the jurisdictional waters permitting is anticipated to take up to 9 months to complete.
Deliverable(s): Section 401 Permit (draft and final), Section 404 Nationwide Permit (draft and final), 1600 Streambed
Alteration Agreement (draft and final).
Phase II – Final Plans, Specifications, and Estimate (PS&E)
Task 10. Final Plans, Specifications, and Estimate
Task 10.1. 60% Unchecked Plans: Concrete Slope Protection Plan is advanced to two sheets. The additional sheet
serves as a CVWD cover sheet consisting of general notes and vicinity map information. Depth of the cutoff wall and
other dimensions are finalized based on the approved Hydraulic and Scour Analysis. All CVWD plan review fees are
paid by the City. Individual Striping Replacement Plans are prepared identifying the limits of each striping detail and
marking per Caltrans Standard Plans. Lengths and dimensions are provided, and any stationing is based on the As-
built plans. 60% Complete plans include special details for pavement griding and AC overlay, if necessary.
Engineering conclusions for the preferred structural rehabilitation alternative identified in the Advance Bridge Planning
Study shall be carried into the final design phase. The final bridge rehabilitation design shall be based on Caltrans-
amended AASHTO LRFD Bridge Design Specifications, various Caltrans Bridge Design and Detail Manuals, bridge
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maintenance practice per Caltrans Structure Maintenance & Investigations (SM&I). Consultant shall attend a meeting
with the City to review the 60% Design Plans and resolve comments or concerns. Additionally, the Consultant shall
also prepare preliminary quantities, and construction cost estimate based on the 60% Design Plans. The structural
section for any pavement replacement and rehabilitation will be based on available information or as directed by the
City. Construction quantities are calculated and the construction cost estimate is prepared using a bid schedule format
and based on available unit prices including a 15% Contingency.
Deliverables: 60% Roadway and Concrete Slope Protection Plans, 60% Unchecked Bridge Plans and Construction
Cost Estimate.
Task 10.2 – 90% Checked Plans, Specifications, and Estimate: Review comments of the 60% Design Review are
incorporated into the plans and are advanced to the 90% level of completion. Specifications for Roadway improvements
are prepared based on the City of La Quinta’s preferred format. Each item of work has a description of measurement
and payment. The Cost Estimate is advanced to a mock-up bid schedule.
The 90% unchecked bridge plans shall be independently reviewed by a separate licensed bridge engineer, who has
not been involved in the project. The independent checker shall review the plans for completeness, consistency,
correctness of references. The bridge designer shall revise the design and plans to mitigate checker’s review
comments. The checker shall perform back check to concur that the comments have been adequately addressed. All
comments and responses shall be documented in the project files.
The Consultant shall use Microsoft Word to prepare and edit Caltrans Standard Special Provisions (SSP) for structural
work at this submittal. The design team shall prepare a list of Caltrans standard bridge pay items for bridge construction.
Design quantity calculations shall be performed using standard Caltrans and City forms and cost estimate summary
sheets. Item unit prices shall be adjusted using Contract Cost Data Book published by Caltrans.
Deliverables: 90% Project PS&E
Task 10.3 – 100% Final Plans, Specifications, and Estimate: Review comments of the 90% Design Review are
incorporated into the plans, all issues and details are completed, and plans, specs, and cost estimate are finalized and
considered ready for bid.
Deliverables: Final signed Plans, Specifications, and Cost Estimate
Task 11. Right of Way and Permitting/ROE
Utilities - Following the completion of the 60% Plans, the Consultant shall prepare the 2nd Utility Notification Letter to
all utility companies that responded to the initial letter stating that they have facilities in the project area. The
correspondence will include the preliminary plans showing the utilities and their disposition and request that the plans
be reviewed to confirm that their facilities are shown accurately and completely and to confirm that their utility has no
affected by the project. Further coordination including issuing a NTO for the Right of Way Certification will occur if their
facilities need to be adjusted to grade.
Encroachment Permits - The Consultant shall coordinate with the City of La Quinta, CVWD, and all required agencies
in order to obtain all required encroachment permits and rights of entry needed for construction. As directed by the
City, the project team shall prepare and submit all permit applications. All permit filing fees are to be paid by the City.
At this time, it is assumed that TCE’s including the preparation of legal descriptions and plats are not required for
entering the channel and for the construction of the concrete slope protection within CVWD’s right of way. This will be
confirmed during the beginning of the design process.
Caltrans Right of Way Certification – The Consultant shall assemble the responses and conditional approvals from
CVWD, utility companies, and other agencies as determined in the preliminary engineering phase and prepare the
Caltrans Exhibit 13-B from the Local Assistance Procedures Manual for the City to submit to Caltrans as part of the
process to obtain federal funds.
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Deliverables: 2nd Utility Notification Letter with 60% complete plans, Caltrans Right of Way Certification Exhibit 13B,
up to three Rights of Entry
Task 12. Caltrans SLA Approval and Contract Bid Documents
The Consultant will provide the final design PS&E for the City to submit to Caltrans SLA for review and approval of
consistence with the programmed scope. The contract bid documents will be further updated for PS&E certification
and construction authorization E76. The final plans are signed and ready for bid.
Deliverables: Coordination of Caltrans SLA Approval of the Final PS&E, Final Contract Bid Documents
Phase III – Design Services During Construction (DSDC)
Task 13. Bidding and Construction Support
The Consultant shall answer bidders’ questions regarding the contract bid documents and prepare bid addenda. The
Consultant shall attend a pre-construction meeting as directed by the City and perform up to two (2) site visits during
the construction as requested by the City.
The Consultant shall review submittals for conformance with the contract plans and specifications, and make
recommendations for acceptance, denial or re-submittal within a reasonable time of receipt; provide response to
contractor's requests for information (RFI’s) about the contract plans and specifications forwarded to the design team
by the City within reasonable time of receipt.
Upon written authorization from the City, the Consultant shall provide engineering design services for revisions to
construction documents resulting from changed field or unforeseen conditions or other change order work required
due to actions of the City.
Following the completion and acceptance of the project, the Consultant shall furnish the City with a complete set of
revised contract drawings showing as-built conditions. Revisions shall be solely based on as-built redlined information
provided by the city. The as-built plans shall be delivered to the City within one month of receipt of redlined plans.
Deliverables: Bid Addenda, Reviewed Submittals, Response to RFI’s, Design Addenda, Meeting Attendance, Site
Photos, and As-built Plans.
7. Project Schedule
A comprehensive Gantt Chart schedule describing the nature and scheduling of proposed tasks is included in the next
page.
8. Disclosures
CNS affirmatively confirms that the company has no alleged significant prior or ongoing agreement failure, any civil or
criminal litigation or investigation pending, which involved CNS in which CNS has been judged guilty or liable within
the last five (5) years.
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Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
9. DBE Commitment
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
10. Acknowledgement of Insurance Requirements (Attachment 2)
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
11. Non-Collusion Affidavit (Attachment 3)
Work Proposal to Provide Professional Civil Engineering Services for the
Bridge Preventative Maintenance Program (BPMP) Project in the City of La Quinta, BPMP-5433(022)
12. Acknowledgement of Addenda (Attachment 4)
CNS Engineers, Inc.
11870 Pierce Street, Suite 265
Riverside, CA 92505
Phone: (951) 687-1005
Fax: (951) 667-3387