Title
Recommendation to Authorize the City Manager to Execute an Agreement with Innovative Construction Solutions, in an Amount Not to Exceed $407,184, for Alameda South Shore Lagoons 3 and 5 Dredging Project, No. P.W. 09-14-49. (Public Works 310)
Body
To: Honorable Mayor and Members of the City Council
EXECUTIVE SUMMARY
The Public Works Department publicly bid the Alameda South Shore Lagoons 3 and 5 Dredging Project on January 23, 2020. The project consists of removing accumulated sediment from the corners of Lagoons 3 and 5 of the South Shore lagoon system. The Public Works Department requests the Council to authorize the City Manager to award a contract from the March 4, 2020 rebid to Innovative Construction Solutions in the amount of $407,184.
BACKGROUND
The South Shore Lagoon System was created in the 1950s, when tidelands south of Alameda Island were filled in to create the South Shore Development, thus leaving a water gap for the new lagoons. Circulation through the lagoons is provided by pumping salt water from an intake pipe in the San Francisco Bay into the westernmost lagoon, near Crown Beach. This water then travels by gravity east through the five lagoons that compose the lagoon system, and returns to the Bay via an outfall at Bayview Drive. The lagoon system serves as a recreational and aesthetic water feature for the residents of the South Shore and the Gold Coast neighborhoods, as well as providing storm water retention and treatment for the city's storm drainage system during the rainy season. Approximately 1,000 acres (1.6 square miles) of the city land drains into the lagoons, including land from both the Gold Coast and South Shore neighborhoods. The Alameda West Lagoon Homeowners Association (AWLHOA) and Public Works Department are jointly responsible for maintaining the lagoon system.
Over the years, dirt and tree leaves have washed into the lagoons from the adjoining streets, storm drains, and the intake pipe. In 2014, the lago...
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