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New Coloma Pump Station Will Increase Capacity and Reliability

Coloma Pump Station Project Summary

The project includes demolition of two existing underground pump stations that will be replaced with a new pump station at Bridgeway Blvd and Coloma. It will feature underground electrical controls and installation of an emergency standby generator. The new pump station will have increased capacity and backup systems to meet needs during storms when flow can increase fivefold.

Timing. Construction is expected to start in spring 2021 and take about one year.

Landscaping for the Coloma Pump Station Replacement Project:

A final landscaping plan was approved by the Sausalito Planning Commission on October 21, 2020. This completes all permitting requirements for the project.  The plan was developed with input from Sausalito Beautiful, Shades of Green (a local landscape architect) and the Whiskey Springs Landscaping Committee.  District staff has been working with the Landscaping Committee since April of 2015 on the development of a planting plan and station design that allows for the protection of the mature Blue Atlas Cedar trees. As a condition of approval from the Planning Commission, the Atlas Cedar trees must be warrantied for 5 years.  In the event a tree dies as a direct result of construction, as certified by an arborist, the District and the City of Sausalito will be required to share the cost of planting a new tree in the largest size available.

Implementation of landscaping will be bid separately from the rest of the pump station project, and solicited to professional landscaping companies rather than general contractors, to ensure work is performed correctly at this high visibility entrance to the City of Sausalito.

Landscape Plan for the pump station
Site Renderings of Coloma Pump Station Planting. These reflect the appearance in five years as plants become well established.

Construction Bid Awarded

The District advertised the Notice Inviting Bids for the Project on 9/30/20, 10/7/20 and 10/14/20 in the Marin Independent Journal, a newspaper of general circulation. Bid documents, including the Notice Inviting Bids, were provided to all Bay Area Builder Exchanges as well as posted on the District's website.  The engineer’s construction cost estimate for the project was $5,000,000 as provided by Carollo Engineers.  Three bids were received

JMB Construction, Inc. is the lowest responsive and responsible bidder at $4.95 million. Qualification criteria was required at the time of bid.  JMB Construction, Inc. showed substantial experience on related pump station projects in the Bay Area.  In addition, District staff received a positive reference from the City of San Rafael for recent pump station work.  District staff recommends awarding the project to JMB Construction, Inc.

Temporary Pump Station

A temporary pump station located across the street from the permanent site is currently operating and will be removed once the permanent pump station is complete in spring 2022.