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City of Pleasanton 2023-2031 (6th Cycle) Housing Element Update CEQA Findings of Fact and Statement of Overriding Considerations 116 FirstCarbon Solutions Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480022/FOF/21480022 Pleasanton Housing Element FOF.docx Sites 6 (Signature Center), 7 (Hacienda Terrace), 8 (Muslim Community Center), and 29 (Oracle) have the potential to use recycled water as the City’s recycled water infrastructure is already available in these locations. Based on the UWMP, the city’s total recycled water use in 2020 was 1,228 acre-feet, and approximately 7.67 percent of all water used in the city was from recycled water. This recycled water percentage is used to estimate the recycled water usage for Sites 6 (Signature Center), 7 (Hacienda Terrace), 8 (Muslim Community Center), and 29 (Oracle). These sites are proposed to be HDR and MDR development, so recycled water is anticipated to be used for irrigation of community green spaces, landscaping, and other uses. The total anticipated potable water and recycled water demand is 3,241.31 AFY by 2045. The 2020 UWMP states that Zone 7 can supply 100 percent of the water demand for the city during all conditions, and the comparison shown below would be unchanged during normal year, single dry year, and multiple dry year conditions. As shown in the Draft Program EIR Table 3.15-7, the water demand projections associated with development consistent with the Housing Element Update fall within the city's total water demand projections for all years. Water Supply and Groundwater Contamination: Because of PFAS contamination in groundwater, all groundwater supply wells for the city were taken out of service in November 2022. Currently, groundwater makes up approximately 20 percent of the total water supply for the City, and, if the existing groundwater supply wells are taken out of commission, this 20 percent will not be available to the City without treatment or additional supply sources. Zone 7 has not identified any impacts to Zone 7’s water supply for the city as a result of the elevated pollutants of concern in groundwater. However, as state regulations concerning PFAS continue to evolve, they have the potential to impact ZONE 7’s well production, similar to the City’s groundwater supply. The City will continue to coordinate with Zone 7 regarding impacts to Zone 7 groundwater supply associated with PFAS. The elevated pollutant level in the city’s groundwater supply directly affects water supply available from local groundwater supply wells for any development application consistent with the Housing Element Update. The City’s total projected water supply minus the approximate 20 percent groundwater supply is shown in Table 3.15-8 of the Draft Program EIR (Page 3.15-36) for the years 2023, 2024, 2025, 2030, 2035, 2040, and 2045. These updated values represent the projected water supply available for the City after decommissioning of the groundwater wells. As shown in the table, with all the City’s groundwater supply wells being taken out of commission, and unless the supply is either replaced or restored, there would be a significant projected water supply deficiency for all years reported. The deficiency ranges from approximately 12 percent to approximately 25 percent. Without the groundwater supply, there would not be enough water available to account for development consistent with the Housing Element Update unless alternative water supplies are identified, such as purchasing additional water from Zone 7 Water Agency. Although Zone 7 has sufficient supplies available, because the City is still evaluating options for additional water and has not finalized additional supplies at the time of publication of the Draft Program EIR, the potential water supply deficiency is considered significant for the purpose of this analysis. Alternative Water Supply Options: The City is actively exploring alternative water supply options to address the loss of groundwater while the PFAS contamination is being addressed. The City began