FROM: James D. Herberg, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
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UNINTERRUPTIBLE POWER SUPPLY IMPROVEMENTS AT PLANT NO. 1, PROJECT NO. P1-132
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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 Uninterruptible Power Supply Improvements at Plant No. 1, Project No. P1-132;
B. Approve a project budget increase of $2,600,000 for Uninterruptible Power Supply Improvements at Plant No. 1, Project No. P1-132, for a new total project budget of $9,600,000;
C. Award a Construction Contract to LEED Electric, Inc. for Uninterruptable Power Supply Improvements at Plant No. 1, Project No. P1-132 for an amount not to exceed $5,765,789; and
D. Approve a contingency of $576,579 (10%).
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BACKGROUND
The Orange County Sanitation District (OC San) has 15 smaller commercial-type uninterruptible power supply (UPS) units throughout the northwest area of Plant No. 1. These units maintain power to critical loads and the plant process control systems in the event of a power failure. This project is part of an on-going effort to replace small UPS units at the two treatment plants with regional, industrial UPS units with 20-year batteries to increase the standby power system reliability as recommended by the J-102 Energy Master Plan in 2007. The existing 480-volt electrical distribution equipment located in the Warehouse, Maintenance and Rebuild Shop, and Fleet areas have reached the end of their useful life and require replacement.
RELEVANT STANDARDS
* 24/7/365 treatment plant reliability
* Comply with California Public Contract Code Section 20103.8, award construction contract to lowest responsive, responsible bidder
PROBLEM
The existing smaller commercial-type UPS units are either at the end of their useful life or are obsolete. These commercial-type units have a shorter design life...
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