Project Information

Bid Title

O Street Wastewater Pump Station Project (CIP WW 26-22)

Issuing Agency

City of Lathrop

Location

California

Published Date

Nov 14, 2025

Closing Date

Dec 12, 2025

Government Level

State & Local

Status

Closed

Original Source

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Bid Documents

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Project Description

O Street Wastewater Pump Station Project (CIP WW 26-22)

Bid/RFP Status:

Open - accepting bids and proposals

Bid/RFP Due Date:

Friday, December 12, 2025 - 5:00pm

Bid/RFP Reference Number:

WW 26-22

The City of Lathrop Department of Public Works is inviting qualified engineering firms to submit proposals for the O Street Wastewater Pump Station Project (CIP WW 26-22). This project involves replacing the existing wastewater pump station with a new facility designed to increase capacity and improve operational efficiency.

The proposed project will replace the existing O Street Pump Station with a new facility to be constructed on a corner of the Lathrop Elementary School property, across the street from the current site. The new station will connect to the existing gravity and force mains along O Street. The project scope includes installation of two (2) 15-horsepower pumps equipped with variable frequency drives (VFDs) to accommodate Peak Wet Weather Flow (PWWF) and Total Dynamic Head (TDH) at ultimate buildout conditions. Additionally, one (1) 5-horsepower pump will be installed at the existing O Street Pump Station to support low-flow operations.

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

Interested firms are encouraged to review the RFP and submit their proposals by December 12, 2025 (by 5:00 PM).

Supporting Documents

Request for Proposals (295 KB)

Location Map (3 MB)

Sewer Project Sheet - Full Document per Request (50 MB)

O St Lift Station (749 KB)

Attachment Preview

REQUEST FOR PROPOSALS

Professional Engineering Consulting Services

for

O Street Wastewater Pump Station

(CIP WW 26-22)

Date Issued:

Response Due Date:

Contact Person:

Mailing Address:

November 14, 2025

December 12, 2025 (by 5:00 PM)

Angel Abarca, P.E., Project Engineer

Phone: (209) 941-7498

Fax: (209) 941-7449

Email: aabarca@ci.lathrop.ca.us

City of Lathrop

Public Works Department

ATTN: Angel Abarca

390 Towne Centre Drive

Lathrop, CA 95330

A. GENERAL INFORMATION

The City of Lathrop, Department of Public Works, is seeking proposals from qualified firms

interested in providing engineering consulting services for the O Street Wastewater Pump Station

(Project), Capital Improvement Project (CIP) WW 26-22. This project is intended to replace the

existing pump station with a new pump station and increase the capacity to operate at optimum

levels.

B. BACKGROUND

Flow monitoring has indicated that approximately 2,060 linear feet of gravity mains upstream of

the existing O Street Pump Station are regularly surcharged due to the station’s shallow wet well.

To maintain acceptable pump operating levels, the City must allow the wet well to fill above the

influent pipe invert, effectively using a portion of the upstream gravity mains for temporary

storage.

The proposed project will replace the existing O Street Pump Station with a new facility to be

constructed on a corner of the Lathrop Elementary School property, across the street from the

current site. The new station will connect to the existing gravity and force mains along O Street.

The project scope includes installation of two (2) 15-horsepower pumps equipped with variable

frequency drives (VFDs) to accommodate Peak Wet Weather Flow (PWWF) and Total Dynamic

Head (TDH) at ultimate buildout conditions. Additionally, one (1) 5-horsepower pump will be

installed at the existing O Street Pump Station to support low-flow operations.

C. ANTICIPATED SCOPE OF SERVICES

A detailed scope of services and budget for this project will be developed as part of the contract

negotiations for the O Street Wastewater Pump Station project. Consultants are requested to

provide a recommended approach and level of effort based on their experience and understanding

of the project and the City’s needs. It is anticipated that the scope of services will include, but not

be limited to, the following tasks:

Task 1: Project Management

The consultant will conduct a kick-off and bi-weekly project progress meetings, follow up with

meeting minutes, prepare monthly status reports and invoices. Consultant will closely monitor

project budget, labor hours expended, and schedule throughout the project. Consultant will

perform internal quality assurance and quality control on all project work products.

Task 2 – Pump Station Condition Assessment

The Consultant will review as-built plans, operation and maintenance manual, and available

operational data. The Consultant will conduct a site visit and meet with City utility staff and

operators to provide an assessment to include issues associated with pump station maintenance,

safety and operations. The Consultant will prepare a technical memorandum of the pump station

condition assessment and Basis of Design Report with design recommendations.

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Task 3 – Plans, Specifications and Estimates

Includes preparing the Plans, Technical Specifications, Engineer’s Estimate and other services

necessary for the City to solicit bids for the construction of the project, including a detailed bid

schedule. The City will provide the front-end sections including the Notice Inviting Bids and the

City’s standard construction contract specifications and insurance requirements.

Task 4 – Bidding Assistance

Includes providing technical support during bidding, participation in a pre-bid meeting (if deemed

needed) to answer questions and prepare addenda before the bid opening and assist in analyzing

the bid results and reviewing the recommendation for award.

Task 5 – Engineering Support Services During Construction

Includes engineering support services to ensure the project is built according to the plans and

specifications. Engineering support services during construction would typically include

participation at construction meetings, preparing responses to technical questions and/or request

for information (RFI), preparing architectural supplemental instructions (ASI) as needed, review

of change orders, invoices and project schedule, attending final walk through and prepare list and

preparation of record drawings at the project conclusion.

D. 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 that are in line with this type of project. Provide information on the firm's current

workload, facilities, resources, and relevant water resources project experience. (1page

max)

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. 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, approach to the project and proposed

work tasks.

5. Provide an estimated project schedule and critical path to achieve schedule.

6. 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.

7. Provide a fee schedule for firm, should additional services be needed on a time and

materials basis that are not identified in this RFP.

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8. 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.

E. COMPENSATION

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

assignment, the cost of each, 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 sub-consulting as required. The

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

Sample Consultant Agreement in Attachment ‘A’.

F. REVISION TO THE RFP

The City reserves the right to revise the RFP prior to the date that responses are due. The City

reserves the right to extend the date by which the responses are due. Revisions and extensions to

the RFP shall be e-mailed to all potential Consultants known to the City and/or uploaded on the

City Website.

The City also reserves the right to reject any or all of the responses, and to re-initiate or abandon

the RFP process.

G. SELECTION PROCESS

The City shall review the responses for completeness, clarity and content. The City’s review will

be based on firm’s experience, key personnel, cost proposal, proposed schedule and the

Consultant’s performance in the City’s past and ongoing projects, if applicable.

Based on the review, the City may choose to shortlist certain firms for further consideration and

invitation to participate in an oral interview. The City reserves the right to invite any number of

firms for oral interviews. 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.

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 chosen a 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.

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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.

H. PROPOSED SCHEDULE

Release Request for Proposals

RFP Response Deadline

Review and Rank Proposals

Negotiate Scope and Contract

City Council Approves Agreement

Notice to Proceed Given to Consultant

November 14, 2025

December 12, 2025 (by 5 PM)

December 15-17, 2025

December 18-19, 2025

January 12, 2026

February 9, 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.

I. SUBMITTAL REQUIREMENTS

A. Due Date: December 12, 2025 (by 5:00 PM). Late proposals will not be accepted.

B. Submit Proposals To:

City of Lathrop

Public Works Department

ATTN: Angel Abarca

390 Towne Centre Drive

Lathrop, California 95330

C. Format: Interested proposers shall submit one (1) bound hard copy and one (1)

electronic copy in PDF format on a USB drive of their proposal. Each proposal must be

signed by an authorized representative of the proposing entity.

For general questions, contact Angel Abarca, Project Engineer electronically at

aabarca@ci.lathrop.ca.us. Responses to all questions received will be compiled and

distributed via email to all recipients of this RFP.

Proposals received after this time and date may be rejected.

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

J. ATTACHMENT

Attachment ‘A’ – Sample Consultant Agreement.

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Commodity Codes

• NAICS 237110Water and Sewer Line and Related Structures Construction
• NAICS 237990Other Heavy and Civil Engineering Construction

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