Project Information

Bid Title

Request for Proposals - Professional Engineering Consulting Services for the Addition of Treatment for PFAS at the LAWTF

Issuing Agency

City of Lathrop

Location

California

Published Date

Feb 11, 2026

Closing Date

Mar 4, 2026

Government Level

State & Local

Status

Closed

Original Source

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Bid Documents

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Project Description

Request for Proposals - Professional Engineering Consulting Services for the Addition of Treatment for PFAS at the LAWTF

Bid/RFP Status:

Open - accepting bids and proposals

Bid/RFP Due Date:

Wednesday, March 4, 2026 - 5:00pm

Per- and polyfluoroalkyl substances (PFAS) have been detected in the City of Lathrop’s groundwater at concentrations exceeding State and Federal drinking water standards. The City of Lathrop (City) is requesting proposals from qualified firms to provide professional engineering consulting services for the addition of PFAS treatment at the existing Louise Avenue Water Treatment Facility (LAWTF).

The LAWTF, located at 2112 Louise Avenue, was constructed approximately ten years ago to treat groundwater for arsenic removal from five City supply wells (Wells 6, 7, 8, 9, and 10). The facility has a design capacity of 6,250 gallons per minute (gpm).

Previous studies, including the PFAS Treatment Alternatives Evaluation (EKI, March 2020) and the PFAS Centralized Treatment Feasibility Study (Carollo Engineers, July 2022), and a technical memorandum on the Characterization of PFAS in Groundwater and Evaluation of Planned PFAS Treatment (EKI, 2024), identified centralized treatment at LAWTF as the preferred alternative. The City’s 2025 Water Supply Master Plan Amendment, further emphasizes the need for PFAS treatment in the near term.

The Request for Proposals (RFP) includes detailed information on project scope, submittal requirements, and the selection process.

Firms interested in submitting a proposal should contact Greg Gibson at ggibson@ci.lathrop.ca.us with the name of a representative, phone number and e-mail address to ensure receipt of further communications relaying to this RFP, including, but not limited to, Addendums.

Interested firms are encouraged to review the RFP and submit their proposals by March 4, 2026 (by 5:00 PM).

Supporting Documents

Request for Proposals (295 KB)

Attachment Preview

REQUEST FOR PROPOSALS

Professional Engineering Consulting Services

for the Addition of Treatment for PFAS at the LAWTF

February 11, 2026

CITY OF LATHROP

PUBLIC WORKS DEPARTMENT

390 Towne Centre Drive

Lathrop, CA 95330

Phone: (209) 941-7430

Fax: (209) 941-7449

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I. GENERAL INFORMATION

Per- and polyfluoroalkyl substances (PFAS) have been detected in the City of Lathrop’s

groundwater at concentrations exceeding State and Federal drinking water standards. The City of

Lathrop (City) is requesting proposals from qualified firms to provide professional engineering

consulting services for the addition of PFAS treatment at the existing Louise Avenue Water

Treatment Facility (LAWTF).

II. BACKGROUND

The LAWTF, located at 2112 Louise Avenue, was constructed approximately ten years ago to

treat groundwater for arsenic removal from five City supply wells (Wells 6, 7, 8, 9, and 10). The

facility has a design capacity of 6,250 gallons per minute (gpm).

Previous studies, including the PFAS Treatment Alternatives Evaluation (EKI, March 2020)

and the PFAS Centralized Treatment Feasibility Study (Carollo Engineers, July 2022), and a

technical memorandum on the Characterization of PFAS in Groundwater and Evaluation of

Planned PFAS Treatment (EKI, 2024), identified centralized treatment at LAWTF as the

preferred alternative. The City’s 2025 Water Supply Master Plan Amendment, further

emphasizes the need for PFAS treatment in the near term.

III. ANTICIPATED SCOPE OF SERVICES

A detailed scope and budget will be finalized during contract negotiations. Consultants should

propose an approach and level of effort based on their experience and understanding of the

project. Anticipated tasks include, but are not limited to::

Task 1 – Pilot Study/Basis of Design Report

Review previous technical studies, water master plan documents. Conduct a pilot study to

confirm the recommended filter media, further refine treatment design criteria and provide a

basis of design report for the addition of PFAS treatment at the LAWTF.

Task 2 – Plans, Specifications and Estimates

Prepare detailed plans, technical specifications, engineer’s estimate, and bid schedule for

construction. The City will provide front-end sections, including Notice Inviting Bids and

standard contract specifications..

Task 3 – Bidding Assistance

Provide technical support during bidding, attend pre-bid meetings, prepare addenda, and assist in

bid analysis and award recommendation..

Task 4 – Engineering Support Services During Construction

Provide engineering support to ensure compliance with plans and specifications, including

participation in construction meetings, responding to RFIs, reviewing change orders and

invoices, monitoring schedules, and preparing record drawings.

Task 5 – Permitting

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Coordinate with agencies and complete permit applications, including SWRCB Drinking Water

Program, San Joaquin Environmental Health Department, Department of Water Resources, and

San Joaquin Valley Air Pollution Control District.

Task 6 – Final PFAS Treatment Facility Construction Report and Record Drawings

Prepare a final report documenting construction, start-up, and commissioning of PFAS treatment

addition, along with record drawings.

IV. RFP CONTENT

Request for Proposals shall include, but not be limited to, the following minimum information:

1. Description of firm and information on major types of consulting services that the firm

performs. Provide information on the firm's current workload, facilities, resources, and

water resources project experience.

2. Provide a work history of the firm. Include examples of previous work done on projects

of similar type, size and scope. Include a list of client references with contacts and phone

numbers.

3. Provide the names along with brief resumes of key personnel who will be involved with

the project. Provide a fee schedule and a description or organizational chart of the proposed

team structure. Include descriptions of their assigned duties and projected involvement in

the project.

4. Provide a description of the proposed methodology and approach to the project. Provide

an estimated project schedule and critical path showing the proposed work tasks, personnel

and resources allocated to each task.

5. Provide a fee proposal for a not to exceed price based on time and materials for each of the

tasks included in the anticipated scope of services. The fee proposal shall include all

assumptions including information assumed to be provided by the City, number of

meetings, proposed staffing, status reporting, and any other assumptions that affect the

work effort.

6. Identify any services that are specifically excluded from the Scope of Work that will likely

be needed to complete the project of the desired scope of work.

V. COMPENSATION

The Consultant shall advise City in writing of the scope of work to be provided for each

assignment, the cost of, and estimated time to perform services. The Consultant shall not proceed

to perform any such services until the City and Consultant have established a project cost, a

completion schedule, and a period for performance and the City has given its written

authorization to proceed.

The terms and conditions of the agreement will be on an agreed time and material basis with a

not to exceed fee. The prime consultant will be responsible for subconsulting as required. The

consultant’s attention is directed to the insurance and indemnification requirements listed in the

Sample Consultant Agreement in Attachment ‘A’.

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VI. REVISION TO THE RFP

The City reserves the right to revise or extend the RFP deadline. Revisions will be

communicated via email or fax to all known potential consultants. The City may reject any or all

proposals or abandon the process at its discretion.

VII. SELECTION PROCESS

Proposals will be reviewed for completeness and quality. Shortlisted firms may be invited for

interviews and/or additional submittals. Submission of a proposal constitutes a waiver of any

right to protest the RFP process.

The Consultant, by submitting a response to this RFP, waives all rights to protest or seek any

legal remedies whatsoever regarding any aspect of this RFP. The City reserves the right to invite

any number of firms for oral interviews.

This RFP does not commit the City to award a contract, to defray cost incurred in the preparation

of a proposal pursuant to this RFP or to procure or contract for work.

When the City has negotiated a scope of work and cost proposal with a chosen Consultant, it will

recommend selection of that Consultant to the City Council. Confirmation and approval of the

Consultant recommended by the City is subject to approval by the City Council.

The City reserves the right to reject any and all proposals, or to negotiate separately with any

source whatsoever in any manner necessary to serve the best interests of the City. Non-

acceptance of any proposal does not imply any criticism of the proposal or imply that the

proposal was deficient.

The City will follow the selection schedule listed below, but reserves the right to modify the

schedule in any manner necessary to serve the best interests of the City.

VIII. PROPOSED SCHEDULE

• Release RFP: February 11, 2026

• Proposal Deadline: March 4, 2026

• Review and Ranking: March 5–10, 2026

• Scope and Contract Negotiation: March 11–24, 2026

• City Council Approval: April 13, 2026

• Notice to Proceed: May 1, 2026

Costs for responding to this RFP are entirely the responsibility of the Consultant and shall not be

chargeable in any way to the City. All material submitted becomes the property of the City and

may be returned only at the City's option.

One (1) electronic .pdf copy of the RFP response signed by an authorized representative of the

proposing entity, shall be delivered electronically to ggibson@ci.lathrop.ca.us on or before

5:00 pm, March 4, 2026 to:

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Greg Gibson, Senior Civil Engineer

City of Lathrop Department of Public Works

390 Towne Centre Drive

Lathrop, CA 95330

Late proposals may be rejected.

Direct inquiries to Greg Gibson at ggibson@ci.lathrop.ca.us. Responses will be emailed to all

RFP recipients. Interested firms must provide a project representative and email address to

ensure full dissemination of updates..

IX. ATTACHMENT

Attachment ‘A’ – Sample Consultant Agreement

Thank you for your interest in serving the people of the City of Lathrop

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Commodity Codes

• NAICS 541330Engineering Services
• NAICS 541611Administrative Management and General Management Consulting Services

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