FROM: Robert Thompson, General Manager
Originator: Mike Dorman, Director of Engineering
SUBJECT:
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VALVE REPLACEMENTS AND WET WELL ACCESS IMPROVEMENTS AT SLATER PUMP STATION, PROJECT NO. FRC-0017
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GENERAL MANAGER'S RECOMMENDATION
recommendation
RECOMMENDATION: Recommend to the Board of Directors to:
A. Receive and file Bid Tabulation and Recommendation for Valve Replacements and Wet Well Access Improvements at Slater Pump Station, Project No. FRC-0017;
B. Award a Construction Contract Agreement to Steve P. Rados, Inc., for Valve Replacements and Wet Well Access Improvements at Slater Pump Station, Project No. FRC-0017, for a total amount not to exceed $2,624,000; and
C. Approve a contingency of $262,400 (10%).
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BACKGROUND
Orange County Sanitation District's (OC San) Slater Pump Station consists of a wet well with two chambers and a below-grade drywell and pump room. The drywell houses five pumps that convey wastewater flows from the wet well to two parallel force mains located in Slater Avenue. These force mains discharge into two parallel gravity trunk sewers located east of Gothard Street.
RELEVANT STANDARDS
* Comply with California Public Contract Code Section 20103.8, award construction contract to lowest responsive, responsible bidder
* Commitment to safety & reducing risk in all operations
* Maintain a proactive asset management program
PROBLEM
Improvements at OC San's Slater Pump Station are needed to improve safety and access during slide gate operations and to reduce operational risks associated with aging and corroded valves.
The existing slide gate configuration makes it difficult to safely lower and operate the gate within the wet well, which has resulted in previous injuries and continues to pose an ergonomic risk. In addition, the wet well slide gate guide rails are corroded.
In the drywell, the existing plug valves and check valves are corroded. This condition may reduce the pump st...
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