FROM: James D. Herberg, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
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SECONDARY TREATMENT VFD REPLACEMENTS AT PLANT NO. 2, PROJECT NO. FE19-08
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
A. Receive and file Bid Tabulation and Recommendation for Secondary Treatment VFD Replacements at Plant No. 2, Project No. FE19-08;
B. Receive and file Orange County Sanitation District's Notice of Intent to Award dated January 27, 2022;
C. Receive and file Award Protest from LEED Electric, Inc. dated February 2, 2022, concerning the award to ACS Engineering;
D. Receive and file Orange County Sanitation District's determination letter dated February 10, 2022 to LEED Electric, Inc. responding to award protest;
E. Award a Construction Contract to ACS Engineering for Secondary Treatment VFD Replacements at Plant No. 2, Project No. FE19-08, for an amount not to exceed $1,433,000; and
F. Approve a contingency of $143,300 (10%).
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BACKGROUND
The Activated Sludge Plant at Plant No. 2 is one of two parallel biological treatment processes at Plant No. 2. The facility was built in 1983 and includes pumps of various sizes, many of which have variable frequency drives (VFDs) to control the output of the pumps.
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
Fourteen pumps in the Activated Sludge Plant ranging in size from 50 to 300 horsepower have VFDs installed between 2004 and 2007 that are at the end of their useful life. Replacement parts and manufacturer support services are no longer available. The pumps driven by these VFDs are critical to operations and permit compliance.
PROPOSED SOLUTION
Award a construction contract for Secondary Treatment VFD Replacements at Plant No. 2, Project No. FE19-08, to replace...
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