BRINE LINE PIGGING SERVICES

Location:	California
Posted:	Mar 4, 2026
Due:	Apr 8, 2026
Agency:	City of Antioch
Type of Government:	State & Local
Category:	V - Transportation, Travel and Relocation Services
Solicitation No:	RFQ P.W. 694-B
Publication URL:	To access bid details, please log in.

Bid Number:	RFQ P.W. 694-B
Bid Title:	BRINE LINE PIGGING SERVICES
Category:	Public Works RFQs
Status:	Open

Description:

The City of Antioch seeks to retain the services of a qualified contractor to perform pigging operations for the City on an as-needed basis. The City intends to enter into a three (3)-year agreement with the selected consultant, with the option, at the City’s sole discretion, to extend the contract two (2) additional years.

The City operates a 4.3-mile-long brine line that will need to be pigged routinely to maintain the integrity and operation of the system. Pig launching and retrieval station have been installed at either end of the pipeline. Pigging operations will begin at the City’s Water Treatment Plant (WTP), located at 401 Putnam St, Antioch, CA 94509, and will be recovered at Delta Diablo located at 2500 Pittsburg-Antioch Hwy, Antioch, CA 94509.

Publication Date/Time:

3/4/2026 12:00 AM

Closing Date/Time:

4/8/2026 2:00 PM

Addendum Date/Time:

April 1, 2026

Contact Person:

Marcus Woodland, Water Treatment Plant Superintendent
[email protected]

Attachment Preview

REQUEST FOR QUALIFICATIONS

FOR

BRINE LINE PIGGING SERVICES

PROJECT NO. P.W. 694-B

Qualification Due Date: April 8, 2026, at 2:00 P.M.

Public Works Department

Water Treatment Plant Division

1201 W 4th St

Antioch, CA 94509

(925) 779-6950

INTRODUCTION

The City of Antioch seeks to retain the services of a qualified contractor to perform pigging

operations for the City on an as-needed basis. The City intends to enter into a three (3)-year

agreement with the selected consultant, with the option, at the City’s sole discretion, to extend

the contract two (2) additional years.

The City operates a 4.3-mile-long brine line that will need to be pigged routinely to maintain the

integrity and operation of the system. Pig launching and retrieval station have been installed at

either end of the pipeline. Pigging operations will begin at the City’s Water Treatment Plant (WTP),

located at 401 Putnam St, Antioch, CA 94509, and will be recovered at Delta Diablo located at

2500 Pittsburg-Antioch Hwy, Antioch, CA 94509.

The deadline for submission of qualifications for this work is April 8, 2026, at 2:00 P.M.

SCOPE OF WORK

PROJECT REQUIREMENTS

A. Furnish necessary personnel, materials, and equipment to conduct the initial pig

cleaning operation of the brine disposal pipeline.

B. Refer to Attachment B for schematic of pigging operations.

C. Existing Pipe Size and Materials:

1. 14-inch High Density Polyethylene (HDPE) (AWWA C906).

2. Actual ID: 12 inches.

3. All elbows have 42-inch radius (min).

D. Nominal pressure and velocity available for pigging operations:

1. Available pressure from fire hydrant near pig launching vault at the WTP: 65

pounds per square inch.

2. Pipeline profile falls approximately 140 feet from the high point at the pig

launching vault at WTP to the connection to the outfall at Delta Diablo.

3. Normal operational velocity in pipeline: 1,400 gallons per minute at 3.9 feet per

second.

E. Pipeline/cleaning/testing lengths:

1. Well Field section:

a. Length: 22,700 feet (4.3 miles) from pig launch vault at WTP to outfall at

Delta Diablo.

b. Launch Vault at WTP: See contract drawing 25C03. For layout of pig launch

vault.

c. Receiver Vault at Delta Diablo: See contract drawing 25C07.

F. Water for testing:

1. Water for testing and cleaning will be provided by the City from the nearby fire

hydrant.

G. Modifications to facilities for pipeline pigging operations:

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1. Pig Launching at WTP: Contractor shall provide all temporary fittings and

flanges needed for connection to the blind flange on the brine pipeline inside the

vault, water connections, valves, piping, and other materials as needed for pig

launching operations.

2. Pig Retrieval at Delta Diablo: Contractor shall provide all temporary fittings and

flanges needed for connection to the blind flange on the brine pipeline inside the

vault. Contractor shall also provide temporary storage tanks in the area shown in

Attachment B for collecting all water and solids from the pigging operation.

H. Disposal of water: Contractor shall be responsible for hauling away and legally disposing

of all collected water and solids within three (3) days of completing pigging operations.

I. Contractor responsible for coordination and compliance with Delta Diablo.

PERFORMANCE/DESIGN CRITERIA

A. Foam Pigs:

1. Materials: Open-cell polyurethane foam body with densities as specified in this

Section.

2. Spiral bands: Criss-crossed urethane bands used to assist in rotating the pig as if

moves through the pipeline.

3. Pigs shall be able to through reductions of up to 60 to 65 percent of cross-sectional

area of the nominal pipe.

4. Pig Cleaning Contractor shall provide the size and style of progressive pigs as

necessary to the conduct the initial cleaning operations.

B. Pig tracking system to be used by Contractor:

1. Transmitter is designed for the length of pipe being tested.

2. Receivers and wands as needed.

3. Batteries as needed.

EXECUTION

PREPARATION

A. Pipeline shall be cleaned to remove most dirt and other foreign matter within the pipeline.

Satisfactory precautions shall be taken to prevent scratching or scraping of interior wall

surfaces.

INSTALLATION

B. General:

1. New pig launching and retrieval vaults shall be used along with temporary facilities

provided by the Contractor. Review Appendix A (Launching and Receiving Vaults)

for equipment layout areas.

2. Install pigs in accordance with Pig Manufacturer's recommendations.

C. Pigging:

1. Prior to start of pigging operations, the Contractor shall assist in verifying that all

pipeline isolation valves are fully open.

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2. Prior to the use of the standard foam pig, a line-size swab made of soft plastic

foam shall be sent through the pipeline to ensure the piping systems fittings, valves

and interior dimensions will allow the initial cleaning pig to pass through without

being trapped with the pipeline.

3. Progressive pigging operation: Upon examination of this initial swab, subsequent

pigs of varying diameters and/or densities shall be sent through the pipeline until it

can be determined that no obstacles and/or restrictions exist within the pipeline for

the stand pigging operations.

4. Complete the final pigging operation by passing the specified line-size bare foam

pipe through the pipeline. The pig tracking transmitted shall be installed for this

final run.

5. Contractor shall be responsible for locating and removing the pig should it become

lodged in the pipeline.

6. Upon completion of cleaning operations remove the Pig Launching and Retrieval

Facilities and reinstall blind flanges in the vaults.

7. Return all valves to original position.

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FORMAT OF THE STATEMENT OF QUALIFICATIONS

The submittal is to be prepared in a bound 8 ½” x 11” format limited to approximately 25 pages,

including brochures. Covers, dividers are not included in the page count. In addition, any

information that needs to be returned should not be submitted. The Consultant is requested to

include the following information in the SOQ. It is expected that the SOQs will follow the order

listed below:

• Cover Letter introducing the firm and describing why you want to be considered. Provide

location of the office that will be performing the work

• Organization Chart for the Project Team

• Brief Information for Key Staff including education, directly related experience, description

of their assignment on this project, and résumé

• A list of proposed sub-consultants, and a description of their proposed services

• Summary of the Company’s Relative Experience and Performance

• Summary of Approach for Completing the Work

• Detailed Scope of Work of Activities Required

• List of contracts/agreements terminated for convenience or default within the past three

years, if any.

• List any litigation that now affects or may affect in the future consultant firm’s ability to

perform.

• Confirm your firms’ ability to meet contract & insurance requirements.

• Anticipated Labor Effort by Task and Classification for Each Activity

• Milestone schedule for Project Completion

ADDENDA

All questions regarding this RFQ must be submitted via email to Marcus Woodland at

mwoodland@antiochca.gov by April 1, 2026, at 4:00 P.M. Questions received after this deadline

will not be considered. Responses to all submitted questions will be issued via written addendum

and published to the City website. Any addenda issued for this RFQ must be acknowledged and

included within the proposer’s SOQ. The addenda will not count toward the page limit.

CONSULTANT SELECTION PROCESS

Enclosed is a copy of the City of Antioch’s Maintenance Services Agreement. By submitting a

proposal for this work, a firm agrees to comply with all terms and conditions outlined in the

agreement.

It is anticipated that from the qualifications submitted, City staff will be able to select the firm best

suited to meet the City’s needs. However, if that is not possible, the City will ask a “short list” of

firms to meet with staff to discuss the project and the firm’s qualifications. The City will negotiate

a professional services contract for the work after staff have determined the best qualified firm.

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

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BRINE LINE PIGGING SERVICES

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See also