TO:
Honorable Mayor and Members of the City Council
THROUGH:
David N. Carmany, City Manager
FROM:
Jim Arndt, Public Works Director
Raul Saenz, Utilities Manager
SUBJECT:Title
Plans and Specifications for the Sewer Lift Station Bypass Valve Replacement Project and Authorization to Solicit Construction Bids.
APPROVE
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Recommended Action
RECOMMENDATION:
Staff recommends that the City Council:
a) Approve the plans and specifications for the Sewer Lift Station Bypass Valve Replacement Project; and
b) Authorize the City Manager to solicit construction bids.
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FISCAL IMPLICATIONS:
Funds in the amount of $60,000 are budgeted in the 2012/2013 Public Works Sewer Maintenance budget.
BACKGROUND:
The City of Manhattan Beach Public Works Department operates six (6) wastewater lift stations, which are located in areas of geographic depression and serve to convey sewerage from those areas through a force-main into the City owned gravity sewer line system. From the City owned gravity sewer lines, sewerage is then conveyed to the Los Angeles Sanitation District sewer line system and ultimately to the sewerage treatment plant located in the City of Carson.
Each wastewater lift station is fitted with an emergency bypass valve system that is designed to be activated in the event of catastrophic failure of the wastewater lift station pumping system. This allows field staff to install a portable emergency diesel driven bypass pump at street level that then conveys sewerage past the failed wastewater lift station pump directly into the force-main.
DISCUSSION:
Through field inspection of each of the sewer lift stations, it has been determined that four of the six sewer lift station bypass valve systems are in need of replacement due to the marginal operability of those system's isolation valves.
Staff's ability to operate the bypass valve system and quickly install the emergency pump is critical to averting a sewer system overflow into the public right of way and/or the ocean, and to protect public safety.
If approved by City Council, Staff would proceed to advertise the project for construction bids. Bids will be opened and analyzed in mid-April, 2013. Staff will return to City Council to recommend approval of a contract with the most qualified bidder.
Specifications for the Sewer Lift Station Bypass Valve Replacement Project are available for review in the City Clerk's Office at City Hall.
CONCLUSION:
Staff recommends that the City Council:
a) Approve the plans and specifications for the Sewer Lift Station Bypass Valve Replacement Project; and
b) Authorize the City Manager to solicit construction bids.