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BACKGROUND Water Distribution System - Water Quality The City's distribution system currently experiences water quality issues during the summer months in the northwest portion of the distribution system in or around the Foothill Tank and its local service area. To mitigate these issues, water utility staff currently employ a fill-and-drain operational strategy to reduce the length of time water resides in the tank. While effective, this operational strategy requires staff time, and impacts operating pressures to customers in the area. Water Supply Facilities - Aging Well Facilities The City supplements treated water from Zone 7 with groundwater from its three groundwater wells known as Well 5, Well 6, and Well 8. Wells 5 and 6 are serviced by a shared facility located at Black Avenue and Santa Rita Road. The Well 8 facility has a standalone building located in the corporation yard at the Operations Services Center. Since these facilities were put into service, minimal upgrades to the existing facilities have been made. Over time, these facilities have required increased maintenance. While still functional, most of the ancillary equipment is nearing the end of its expected life. Chemical storage, transfer, dosing and control systems are outdated. A comprehensive evaluation is needed to assess all components of these well facilities, including the electrical, structural and mechanical equipment, and to recommend improvements to assure reliability and compliance with current codes. Chemical storage and dosing systems will be standardized amongst the wells, providing improved operational and maintenance efficiency. DISCUSSION A Request for Qualifications was advertised on November 16, 2018. On December 11, 2018, Statement of Qualifications (SO()) were received from two firms, Carollo Engineers and Kennedy-Jenks. Both firms were interviewed by City staff on January 8, 2019. Carollo Engineers was selected as the most qualified firm. Staff recommends that the City enter into the attached agreement with Carollo Engineers to review, analyze, and develop recommendations to address the City distribution system's water quality and to upgrade the water supply groundwater well facilities. Schedule These two efforts will occur simultaneously with work starting in April. The Foothill Tank and surrounding area water quality recommendations will be completed by November 2019. The well assessment portion of the project will be completed by July 2019. Page 2 of 3