Montara Water and Sanitary District

MONTARA, CA

At the initiation of the project, all existing Montara Water and Sanitary District (MWSD) water storage tanks were over 35 years old, with the oldest being over 50 years old. The focus of this project was to replace an existing 100,000-gallon concrete tank, built in 1959 by the U.S. Army and showing signs of severe deterioration, and construct a second tank at the site to provide redundancy and emergency storage for the District’s customers. The existing tank also served as a clear well for the pump station boosting water from the tank into the upper pressure zones.

The following two-phase approach was implemented:

Phase 1. Build the first welded steel tank and disconnect the dilapidated concrete tank from the distribution system.
Phase 2. Demolish the concrete tank and build the second welded steel tank in its place.

Extensive expertise working within California’s coastal communities and providing regulatory support with the CCC allowed SRT to successfully navigate the CCC permitting process, address biological constraints during design and construction, and design the tanks to meet current Water Works standards. In addition, SRT was instrumental in supporting the District’s staff with scheduling shutdowns and switchovers from the old tank to the newly completed tank without any service interruptions or customer complaints.