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: CONSENT CALENDAR Account Number: 10-4679 File ID: 26-11127 TO: City Council
FROM: Alex Khojikian, City Manager
PREPARED BY: Public Works Department
MEETING DATE: May 18, 2026
SUBJECT:
Marina Lagoon Spot Dredging – Agreement
RECOMMENDATION:
Approve an agreement with MidCal Dredging, Inc. for the Marina Lagoon Spot Dredging Project in the amount of $1,266,216; establish a contingency reserve in the amount of $190,000; and authorize the Public Works Director to execute the agreement in substantially the form presented and issue change orders as allowed by the agreement documents and within the contingency amount.
BACKGROUND:
The Marina Lagoon Spot Dredging Project (Project) is part of the City's plan to perform maintenance on the City's most prominent flood control and recreational facility. Since its construction in 1964, the Marina Lagoon has accumulated more than 314,190 cubic yards of shoaling (sediment deposition), which has reduced its utility as a flood control and recreational facility. While the City is exploring alternatives to perform a medium- to large-scale dredging project to address nearly 60 years of shoaling, this current Project comprises targeted dredging up to 2,000 cubic yards from areas where stream and stormwater runoff from where Borel Creek (19th Avenue Channel) and Leslie Creek (16th Avenue Channel) flow into the Marina Lagoon. Dredging near the outfall of Laurel Creek was originally part of the proposed project but was later deferred for the medium- to large-scale project.
On January 4, 2024, the City issued a Request for Proposals for professional design and consulting services for the Project.
The City awarded the project to Moffatt & Nichol (M&N) on April 1, 2024. M&N subsequently prepared bid documents with an Engineer's Estimate of $1,150,000 to complete the Project.
In accordance with Municipal Code Section 3.60.030, a competitive public process was used to obtain bids for the Project.
A Notice Inviting Sealed Bids was issued on June 3, 2025. The City received one (1) bid at the bid opening deadline on June 25, 2025, in the amount of $1,509,500. Due to the high amount of the single bid exceeding the estimate and budget, the City Council rejected all bids on August 18, 2025, and also authorized the Public Works Director to negotiate directly with the sole bidder. Negotiations with the sole bidder did not result in an agreement, and a rebid of the Project was issued on January 15, 2026.
At the February 17, 2026 bid opening, two (2) bids were received but were later determined to be non-responsive due to omissions on the bid proposal forms, and all bids were subsequently rejected. A third advertisement of the Project, with a bid opening date of April 7, 2026, yielded three (3) bids from MidCal Dredging, Inc. ($1,255,216), Duwamish Services ($1,428,350), and Dixon Marine Services ($1,525,410).
Staff reviewed the bids and determined that MidCal Dredging, Inc. is the lowest responsive, responsible bidder and recommends that it be awarded the Agreement. There is a high likelihood that unforeseen issues will arise during the
CITY OF SAN MATEO
Project due to the nature of over-water work. Accordingly, staff recommends that a 15% contingency be established given the high potential for significant unforeseen issues.
BUDGET IMPACT:
There are sufficient funds in the Storm System Dredging Project (#468005) and the Wet Weather Preparation Activities Project (#46C006) budgets to fund this work in this Agreement and establish the contingency reserve.
ENVIRONMENTAL DETERMINATION:
This Project will be performed pursuant to the terms and conditions of an existing permit with the environmental regulatory agencies for the Marina Lagoon including the San Francisco Bay Regional Water Quality Control Board. On July 7, 2021, the City filed a Notice of Exemption with the Office of Planning and Research and the County Clerk-Recorder for the County of San Mateo (SCH No. 2021070131) for proposed maintenance activities for the Marina Lagoon, effective from 2022 through 2026. These maintenance activities are categorically exempt as existing facilities as they involve negligible or no expansion of existing or former use. (CEQA Guidelines Section 15301.)
NOTICE PROVIDED
All meeting noticing requirements were met.
ATTACHMENTS
Att 1 – Agreement
STAFF CONTACT
Jimmy Vo, Engineering Manager
[email protected]
(650) 522-7319