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Although a regional PFAS treatment facility was initially considered, all of the above options were evaluated from a City-only perspective. It has been determined that cost efficiencies and other benefits from partnering with Zone 7 on any of the options could occur. Therefore, including a regional option was dropped from the analysis. The City will work with Zone 7 to evaluate the benefits of a regional well project to meet the needs of the City and Zone 7's new well capacity. In addition to developing planning level Capital and Operation and Maintenance (O&M) costs for each option, Staff included costs of necessary system improvements to ensure the total fiscal needs were covered for each alternative. A hydraulic modeling analysis of the distribution system was conducted to identify any improvements required for pressure and flow changes in the system. The relocation of the source of supply is creating system deficiencies in existing pipes, pumps, and turnouts that need to be remedied as part of the project implementation. Interim Water Improvement projects (the City Council awarded the design work on August 15, 2023) will address several system deficiencies, and the costs are not included in the alternative pricing. The total cost comparison incorporated only the improvements needed exclusively for each option. In consultation with the Ad Hoc Subcommittee, Staff performed a multi-criteria decision analysis considering various criteria and weightings. The analysis details are as follows: • Water supply reliability — the ability to meet water demands predictably and consistently, including dry years. Considers system redundancy and ability to meet demands during peak periods and or emergency conditions Weighting 35% • Implementation Timing — how quickly the alternative can be online, considering the timeframe for design, permitting, and construction (if applicable) Weighting 25% • Water Quality/Regulatory Compliance — degree of ability to deliver water below all current and anticipated future state and federal drinking water standards Weighting 15% • Operation Complexity — ease of operating and maintaining the system from a technical standpoint, considering organizational readiness and necessary staff qualifications/certifications, and the ability to enhance the system in the event of additional and or more stringent drinking water regulations Weighting 15% • Institutional Complexity — ease of implementation and management from an institutional standpoint (e.g., the willingness of external partners, the complexity of agreements, and administration) Weighting 10% Page 4 of 8