FROM: James D. Herberg, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
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WAREHOUSE, ELECTRICAL SUBSTATION, AND 12KV SERVICE CENTER REPLACEMENT AT PLANT NO. 2, PROJECT NO. P2-126
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
A. Approve a Professional Design Services Agreement with Stantec Consulting Services, Inc. to provide engineering services for Warehouse, Electrical Substation, and 12kV Service Center Replacement at Plant No. 2, Project No. P2-126, for an amount not to exceed $4,876,455; and
B. Approve a contingency of $487,646 (10%).
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BACKGROUND
The Orange County Sanitation District (Sanitation District) has an approximately 20,000 square foot warehouse at Plant No. 2 constructed in 1998 and used to support Plant No. 2 operations and maintenance activities.
Plant No. 2 receives power from Southern California Edison (SCE) from a single 66kV feed through an on-site SCE substation. The SCE Substation feeds the Sanitation District's 12kV Service Center, which includes electrical equipment to distribute utility power to Plant No. 2 facilities. The 12kV Service Center, built in 1979, is an approximately 5,600 square foot building.
RELEVANT STANDARDS
* 24/7/365 treatment plant reliability
* Protect Orange County Sanitation District assets
* Comply with the California Government Code Section 4525: Select the "best qualified" and "negotiate fair and equitable fees"
PROBLEM
The existing warehouse is located where new process facilities for the new Class A Digester Complex will be constructed under TPAD Digester Facility at Plant No. 2, Project No. P2-128. That specific area is required to accommodate process requirements and the long-term implementation plan for completely replacing the existing digester complex. To avoid a delay to that project, the demolition of the existing warehouse must be completed by June 2025.
The existing SCE substation has one transformer and...
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