UW27003 REQUEST FOR PROPOSALS - DESIGN SERVICES FOR RWCF DIGESTERS 6 & 7

Location:	California
Posted:	May 8, 2026
Due:	Jun 4, 2026
Agency:	City of Stockton
Type of Government:	State & Local
Category:	99 - Miscellaneous C - Architect and Engineering Services - Construction R - Professional, Administrative and Management Support Services
Solicitation No:	UW27003
Publication URL:	To access bid details, please log in.

General Information
Due Date: Thursday, June 4, 2026
Opening Time: 2:00 PM
Published Date: May 8, 2026
Last Updated: May 8, 2026
Bid Orientation:
A non-mandatory job walk will be held on Thursday, May 21, 2026, at 10:00 AM promptly at 2500 Navy Drive, Stockton, CA 95206.

Related Links
Description: Prevailing Wage Determinations	URL: Prevailing Wage Determinations

Contacts
Role:	Name:	Phone:	Email:
Project Manager	Ana Chiono	(209) 937-5650	ana.chiono@stocktonca.gov
Office Specialist	Marianne Dominguez	(209) 937-8706	marianne.dominguez@stocktonca.gov

Questions & Answers:
There are currently no Question & Answers to view.

Submittals
There are currently no Submittals to view.

Job Walk & Plan Holder's List
Document:

Notice
Document:	Notice Inviting Proposals

Specifications
Document:	Request for Proposals

Plans, Attachments & Agendas
There are currently no Plans to view.

Last Update :

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NOTICE INVITING PROPOSALS

NOTICE IS HEREBY GIVEN that Request for Proposals (RFP) are invited by the City of

Stockton, California for specifications for DESIGN SERVICES FOR RWCF DIGESTERS 6 & 7

PROJECT (NO. UW27003) in strict accordance with the specifications.

The Regional Wastewater Control Facility (RWCF) operates two (2) anaerobic digesters

(Digester 4 and Digester 5) to stabilize sludge for dewatering and disposal. In 2021, a digester

capacity analysis was performed to investigate potential digestion capacity, and it projected the

hydraulic capacity to be over the maximum capacity by 25 percent as of 2025. In addition, there

is an operational need for redundancy because one digester is required to be offline while the

other is rehabilitated. To ensure continued digestion capacity and improve dewatering reliability,

the RWCF Digesters 6 & 7 Project will provide two (2) additional anerobic digesters for a

combined volume of six (6) million gallons. This work is for engineering services for the design

of two (2) additional 3 million gallon digesters (Digester 6 and Digester 7).

Proposal forms and specifications are available on the City’s web site at

www.stocktongov.com/mudbid and must be delivered to the Office of the City Clerk, City Hall,

425 North El Dorado Street, Stockton, up to but not later than, Thursday, June 4, 2026, at 2:00

p.m.

The City reserves the right to reject any and/or all proposals received.

Information on Technical Data

Ana Chiono, MUD Engineering

(209) 937-5650

e-mail: ana.chiono@stocktonca.gov

Information on Bid Process/Clarification

Procurement Division

e-mail: stocktonbids@stocktonca.gov

DISCLAIMER: The City does not assume any liability of responsibility for errors/omissions in

any document transmitted electronically.

Bid Flash Post and Advertisement Date: Publication Date

KATHERINE ROLAND, CMC, CPMC

INTERIM CITY CLERK OF THE CITY OF STOCKTON

This is the opportunity summary page. It provides an overview of this opportunity and a preview of the attached documentation.

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UW27003 REQUEST FOR PROPOSALS - DESIGN SERVICES FOR RWCF DIGESTERS 6 & 7

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