FROM: Robert Thompson, General Manager
Originator: Mike Dorman, Director of Engineering
SUBJECT:
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UTILITY WATER PLANNING STUDY AT PLANT NOS. 1 AND 2, PROJECT NO. PS23-05
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION: Recommend to the Board of Directors to:
A. Approve a Professional Services Agreement with HDR Engineering, Inc., to provide engineering services for Utility Water Planning Study at Plant Nos. 1 and 2, Project No. PS23-05, for an amount not to exceed $670,000; and
B. Approve a contingency of $67,000 (10%).
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BACKGROUND
The Orange County Sanitation District (OC San) utilizes various water systems for different purposes throughout Reclamation Plant Nos. 1 and 2. The plant water system is sourced from secondary effluent. The city water (potable) system is provided by the local city jurisdiction (City of Fountain Valley for Reclamation Plant No. 1 and City of Huntington Beach for Reclamation Plant No. 2).
The city water and plant water pump stations at Plant No. 1 and the city water pump station at Plant No. 2 are aging and require improvements to maintain service. The repair and rehabilitation frequencies for the mechanical equipment have increased to maintain operability, and the electrical equipment will require replacement. In addition, plant water and potable water demands have increased with plant expansion and process changes since they were originally designed and constructed resulting in redundancy deficiencies.
Project No. J-117B is currently replacing the plant water pump station at Plant No. 2.
RELEVANT STANDARDS
* 24/7/365 treatment plant reliability
* Sustain 1, 5, 20-year planning horizons
* Protect OC San assets
PROBLEM
An evaluation of improvements and long-term system needs for the city water and plant water pump stations at Plant No. 1, and the city water pump station at Plant No. 2, is required to optimize the scope and schedule of the associated future capital i...
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