DATE: August 18, 2026
TO: Mayor and City Council
FROM: Director of Public Works
SUBJECT
Title
Adopt a Resolution Approving Addendums No. 1 and No. 2, Authorizing the City Manager to 1) Award a Contract to Corcus Construction, Inc., in an Amount of $1,262,240 and Approve $126,224 in Administrative Construction Contingency, and 2) Amend the Existing Professional Services Agreement with HydroScience Engineers, Inc., to Increase the Contract Amount by $44,203; and 3) Appropriate Additional Funds in the Amount of $471,275 for the Water Resource Recovery Facility Effluent Return Pump Station Project, Project No. 07806
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RECOMMENDATION
Recommendation
That City Council adopts the attached resolution (Attachment II):
1. Approving Addendums No. 1 and No. 2, which were issued to make minor revisions to the plans and specifications and to answer bidder clarification questions for the Water Resource Recovery Facility (WRRF) Effluent Channel Return Pump Station Project, Project No. 07806; and
2. Authorizing the City Manager to award a construction contract to Corcus Construction, Inc., for the WRRF Effluent Channel Return Pump Station Project, Project No. 07806, in an amount of $1,262,240 and approving $126,224 in administrative construction contingency; and
3. Authorizing the City Manager to amend the Professional Services Agreement (PSA) with HydroScience Engineers Inc. (HydroScience), to include engineering services during construction, increasing the contract amount by $44,203 to a not-to-exceed limit of $142,811; and
4. Appropriating additional funds in the amount of $471,275 from the Sewer System Replacement Fund (Fund 611) and Sewer System Improvement Fund (Fund 612).
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SUMMARY
The City of Hayward WRRF treats an average of 11 million gallons per day (MGD) and complies with all current effluent discharge regulations. During storm events, excess treated wastewater is temporarily stored in on-site ponds until it can be returned to the effluent channel for discharge into the San Francisco Bay. To improve wet-weather operations and restore storage capacity more quickly, a new return pumping station at Pond 4 has been designed to increase pumping capacity from 1 MGD to 3 MGD.
On July 21, 2026, Four (4) bids were received. Corcus Construction submitted the lowest bid amount of $1,262,240, which is approximately 6% above the Engineer’s Estimate of $1,190,000. Staff are requesting City Council’s approval of Addendum No. 1 and No. 2, which provided minor revisions to clarify the specifications and plans, and awarding the construction contract to the lowest responsible bidder, Corcus Construction, Inc, in the amount of $1,262,240 and, and approving $126,224 in administrative construction contingency (change orders).
HydroScience has performed design and bidding services for the WRRF Effluent Channel Return Pump Station Project. Staff are requesting City Council approval to amend the PSA with Hydroscience to include engineering services during construction.
ATTACHMENTS
Attachment I Staff Report
Attachment II Resolution