Item 19 - Agreements for On-Call Engineering Services

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Public Works Agency www.santa-ana.org/public-works Item # 19 City of Santa Ana 20 Civic Center Plaza, Santa Ana, CA 92701 Staff Report April 4, 2023 TOPIC: Agreements for On -Call Engineering Services AGENDA TITLE Approve Agreements with Tetra Tech, Inc., Stantec Consulting Services, Inc., and EEC Environmental for On -Call Engineering Design Services for PFAS Treatment Systems in an Aggregate Amount Not to exceed $3,000,000 for up to a Five -Year Term (Non - General Fund) RECOMMENDED ACTION Authorize the City Manager to execute agreements with Tetra Tech, Inc., Stantec Consulting Services, Inc., and EEC Environmental to provide on -call engineering design services for PFAS treatment systems, for a shared aggregate amount not to exceed $3,000,000, for a three-year term beginning April 4, 2023 and expiring April 3, 2026, with provisions for two, one-year extensions, subject to non -substantive changes approved by the City Manager and City Attorney. DISCUSSION The Public Works Agency's Water Resources Division (Water Resources) oversees and maintains the daily operations of the City's water and sanitary sewer systems. The water system is composed of approximately 480 miles of water main, 21 groundwater wells, seven pump stations, 10 reservoirs with a storage capacity of 49 million gallons, four pressure regulating stations, and seven connection points to the Metropolitan Water District. The system has an average daily demand of 30 million gallons from its roughly 45,150 metered service connections. Due to recent monitoring orders issued by the California State Water Resources Control Board related to per- and polyfluoroalkyl substances (PFAS), the City has been proactive in pursuing advanced water treatment options to remove PFAS from the drinking water supply. On May 19, 2020, the City entered into an agreement with the Orange County Water District (OCWD) requesting them to design and construct PFAS treatment facilities at well stations which showed contaminant levels above the state Response Level thresholds. Currently, the City is in the design or construction phases of PFAS treatment facilities at several well locations that fall under the parameters of the OCWD agreement.