FROM: James D. Herberg, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
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PLANT WATER PIPELINE REPLACEMENT IN KINNISON, LINDSTROM, AND SCOTT TUNNELS AT PLANT NO. 2, PROJECT NO. FE18-14
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION: Recommend to the Board of Directors to:
A. Receive and file Bid Tabulation and Recommendation for Plant Water Pipeline Replacement in Kinnison, Lindstrom, and Scott Tunnels at Plant No. 2, Project No. FE18-14;
B. Award a Construction Contract to MMC Inc. for Plant Water Pipeline Replacement in Kinnison, Lindstrom, and Scott Tunnels at Plant No. 2, Project No. FE18-14, for a total amount not to exceed $1,134,000; and
C. Approve a contingency of $170,100 (15%).
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BACKGROUND
Plant water is screened and chlorinated secondary effluent used wherever higher-quality potable water is not necessary, such as for washdown or cooling. Plant water is somewhat corrosive leading to corrosion in metallic pipes. Plant water pipelines, along with many other utilities, are often located in tunnels throughout the plants so that they can be readily accessed and maintained.
RELEVANT STANDARDS
* Comply with California Public Contract Code Section 20103.8, award Construction Contract to lowest responsive, responsible bidder
* Maintain a proactive asset management program
PROBLEM
Many of the plant water pipelines in the Kinnison, Lindstrom, and Scott Tunnels have been in place for decades and consist of pipes and appurtenances made from steel and ductile iron. The plant water system in these tunnels has a long history of leaks requiring emergency repair work.
PROPOSED SOLUTION
Award a Construction Contract for Plant Water Pipeline Replacement in Kinnison, Lindstrom, and Scott Tunnels at Plant No. 2, Project No. FE18-14. This project will replace approximately 2,500 feet of plant water pipes ranging from 4 to 10 inches in diameter.
Staff recommends awarding...
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