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Title:
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REPORT - APPROVAL OF AMENDED AND RESTATED MEMORANDUM OF UNDERSTANDING AND PROFESSIONAL SERVICES AGREEMENT - ULTRAVIOLET LIGHT DISINFECTION EQUIPMENT SYSTEM PRE-SELECTION
BACKGROUND: Ultraviolet Light (UV) is the primary disinfection process for the Laguna Treatment Plant (LTP). In 2012, the Division of Drinking Water (DDW) re-evaluated and subsequently de-rated the disinfection system capacity, resulting in deficiency under certain wet weather flow and/or low UV transmittance conditions. Additionally, the existing UV equipment was commissioned in 1998 and is at the end of its useful life. These conditions triggered the need to evaluate disinfection equipment options to ensure that LTP has adequate disinfection capacity up to 67 million gallons per day. Through various analyses, the City determined that replacing the existing UV system with a new UV system is the most feasible approach to address the capacity and reliability deficiencies.
RECOMMENDATION: It is recommended by the Trans...
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