FROM: Robert Thompson, General Manager
Originator: Mike Dorman, Director of Engineering
SUBJECT:
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SECONDARY TREATMENT AREA CABLE REPLACEMENT AT PLANT NO. 1, PROJECT NO. FR1-0023
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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 Secondary Treatment Area Cable Replacement at Plant No. 1, Project No. FR1-0023;
B. Award a Construction Contract Agreement to Big Sky Electric, Inc., for Secondary Treatment Area Cable Replacement at Plant No. 1, Project No. FR1-0023, for a total amount not to exceed $298,102; and
C. Approve a contingency of $59,600 (20%).
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BACKGROUND
Orange County Sanitation District (OC San) operates an effluent junction box at Plant No. 1 that conveys treated effluent to the Plant No. 2 ocean outfall. OC San also supports the Orange County Water District's (OCWD's) Groundwater Replenishment System (GWRS) by supplying electrical power from Power Building 8 to the GWRS Metering Vault located at Plant No. 1. After the initial construction of the GWRS, OCWD took over the operation of the metering vault.
RELEVANT STANDARDS
* Comply with California Public Contract Code Section 20103.8, award construction contract to lowest responsive, responsible bidder
* 24/7/365 treatment plant reliability
PROBLEM
The power cable to the effluent junction box shows signs of failure and the power and control cables serving OCWD GWRS metering vault at Plant No. 1 are damaged. The condition of these cables affects the reliability of electrical service needed to support effluent conveyance to Plant No. 2 and the transfer of flow to OCWD.
PROPOSED SOLUTION
Award a construction contract agreement to replace damaged power and control cables for the GWRS metering vault. These cables will be fed from the adjacent OCWD screenings electrical room instead of Power Building 8. This project will also replace pow...
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