DATE: March 1, 2016
TO: Mayor and City Council
FROM: Director of Utilities & Environmental Services
SUBJECT
Title
Water Pollution Control Facility Digester Improvement Project: Approval of Plans and Specifications, and Call for Bids
End
RECOMMENDATION
Recommendation
That Council adopts the attached resolution approving the plans and specifications for the WPCF Digesters Improvement Project and calling for bids to be received on April 5, 2016.
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BACKGROUND
The City's WPCF provides wastewater treatment for Hayward's residential and business communities. The facility treats an annual average of twelve million gallons per day (MGD) and meets current requirements for discharge of treated effluent to the deep waters of the San Francisco Bay. The treatment process includes three anaerobic digesters ranging in volume from 0.9 to 1.4 million gallons with one digester constructed in 1952, the second in 1958, and the third in 1976.
The City completed a comprehensive update of the WPCF's Master Plan in October 2014 that included, in part, recommendations to rehabilitate or replace old systems that have reached the end of their useful life. Other process enhancements were also recommended to improve the digester feed system that will result in improved digester gas production.
The first project implemented as a result of the updated Master Plan is to address both the needed improvements and process enhancements to the WPCF's digesters. In January 2013, staff selected and entered into a professional services agreement with West Yost Associates for design and construction management services for the Digester Improvement Project.
DISCUSSION
The 2014 Master Plan identified improvements to the existing digesters that address aged facilities in need of replacement, improvements for enhanced safety and reliability, as well as process enhancements. The Digester Improvement Project include...
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