CITY OF SAN MATEO
CITY OF SAN MATEO
Agenda Report
City Hall
330 W. 20th Avenue
San Mateo CA 94403
www.cityofsanmateo.org
Agenda Number: 8 Section Name: {{section.name}} Account Number: 72-4674 File ID: {{item.tracking_number}} TO: City Council
FROM: Alex Khojikian, City Manager
PREPARED BY: Public Works Department
MEETING DATE: January 13, 2025
SUBJECT:
Basin C Sanitary Sewer Rehabilitation Project – Agreement RECOMMENDATION:
Award an agreement to Westland Contractors, Inc. for the Basin C Sanitary Sewer Rehabilitation Project in an amount not to exceed $5,953,822; establish a contingency in the amount of $900,000; and authorize the Public Works Director to execute the agreement in substantially the form presented and issue change orders within the contingency amount.
BACKGROUND:
The Clean Water Program (CWP) is improving the City’s sanitary sewer system to prevent sanitary sewer overflows and unauthorized discharge of sewage. As part of the CWP, the annual sanitary sewer rehabilitation project proactively upgrades and rehabilitates aging sewer pipes to reduce inflow and infiltration.
Basin C includes those City areas east of Highway 101, south of J Hart Clinton Drive, and north of Foster City and Belmont.
All Basin C sewers were evaluated using video inspection, with identified defects included in the project for repair. Due to bacteria issues within the lagoons, this project will perform additional repairs on smaller defects within ½ mile of the lagoons and beaches east of Highway 101 to help address potential exfiltration issues. This work will ensure proper operation of the sewer collection system, reduce infiltration and inflow, and fix defects to prevent potential sanitary sewer overflows. The project includes the following sewer work: pipe spot repairs, full segment pipe replacements, rehabilitation and replacement of manholes, trenchless cured-in-place pipe spot repairs, pre- and post-installation video inspections, and site restorations. Construction activities are expected to start in February 2025.
The project was advertised for construction on October 21, 2024. Bids were opened on November 14, 2024. The engineer’s estimate was $6,190,000. Four bids were received and are listed as follows:
Contractor: Bid Amount:
Westland Contractors, Inc. $5,953,822
C2R Engineering, Inc. $6,587,363
Express Plumbing $6,900,851
Cratus Inc. $7,962,840
Staff recommends the project be awarded to the lowest responsive, responsible bidder, who has been determined to be Westland Contractors, Inc., with a bid of $5,953,822. After review of the bid documents, the bid package was found to be complete, and the contractor was found to have the appropriate licenses. Staff also recommends establishing a contingency reserve in the amount of $900,000 to address any unanticipated items that may arise during construction.
CITY OF SAN MATEO
BUDGET IMPACT:
Sufficient funding for this agreement and contingency is available in the CWP Annual Citywide Sanitary Sewer Rehabilitation (46S091) and in the TMDL Enhanced Planning and Infrastructure Improvements (46S101) project budgets.
The TMDL funds will be used for repairs within ½ mile of the lagoons, and the CWP Annual Rehabilitation funds will be used for those repairs in Basin C outside ½ mile of the lagoons.
ENVIRONMENTAL DETERMINATION:
The work addressed by this administrative report is being undertaken to support the Clean Water Program. This project is subject to the requirements of the California Environmental Quality Act (CEQA), the general components of which are included as part of the Final Programmatic Environmental Impact Report (Final PEIR) (SCH No. 201532006) that was prepared for the Clean Water Program. The Final PEIR was certified by City Council on June 6, 2016. The City prepared Addenda to the Final PEIR that was approved on July 16, 2018 (Addendum 1) and April 15, 2019 (Addendum 2). This work is within the scope of the Project evaluated in the PEIR and Addendum.
NOTICE PROVIDED
All meeting noticing requirements were met.
ATTACHMENTS
Att 1 - Agreement
Att 2 - Bid Summary
Att 3 - Collection System Basin Delineation
STAFF CONTACT
Laura Webb, Acting Senior Engineer
[email protected]
(650) 522-7322
Tom Williams, Engineering Manager
[email protected]
(650) 522-7307