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City of Pleasanton 2023-2031 (6th Cycle) Housing Element Update CEQA Findings of Fact and Statement of Overriding Considerations FirstCarbon Solutions 117 Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480022/FOF/21480022 Pleasanton Housing Element FOF.docx considering a PFAS and Groundwater Wells Rehabilitation Project to address PFAS contamination and proceeded with work to implement this project including preparation of designs and CEQA review. The project is intended to extend, by 30 years, the life of the existing groundwater supply wells as safe, reliable, and locally controlled. The estimated cost of the project is 46 million dollars and is being updated to reflect the current state of the economy. All environmental applications have been submitted; however, financial commitments, such as grants or City funding mechanisms, have not been finalized. Although this project would remediate the elevated PFAS levels, the Pleasanton City Council voted to pause the project and evaluate alternatives to address the water wells. More alternative water supply options are being considered by the City to replace the deficiency associated with the loss of groundwater supply. The additional options being considered include the following: • Drilling of new City wells with or without PFAS treatment, depending on the location of the wells. This option would require test drilling and groundwater sampling. • Discussion between Zone 7 and the City have taken place with the option of Zone 7 providing 100 percent of all water supply. • Consideration of purchasing water supply from outside Zone 7. It is important to note that City staff, in recommending the project pause, indicated that the treatment and rehabilitation project remains a viable option. As such, the City could opt to re-start work on the well rehabilitation and treatment project at the conclusion of their review. Water Supply Analysis: The average daily water demand per capita in this assessment of 159 GPCD is based on total water used in 2020, which includes residential, commercial, industrial, and landscape consumption combined. The residential portion makes up approximately 62 percent of all water used. Additional water uses within residential developments like community green spaces, trees, landscaping, and shrubbery require additional water use. Therefore, the conservative value of 159 GPCD was used to account for these additional demands. In addition, more water conservation measures may take effect in the coming years that could decrease water use per capita. The analysis evaluates significantly more residential units than are needed to strictly meet the Regional Housing Need Allocation assigned to the City for the forthcoming 8-year Housing Element Update cycle. The analysis assumed that in every case, new residential development would be additive to any existing uses on a site, when in fact it is likely that new housing would replace all or some of those uses. All of these factors mean that this approach provides a conservative analysis with respect to water supply/demand impacts. Future development would be built using new building standards for water efficiency and would be designed to use less water than existing development. Future development would also occur incrementally over time, based on market conditions and other factors, such that existing water services are not overburdened by substantially increased demands at any single point in time. The General Plan includes goals and policies to help conserve water. Chapter 8, Water Element, of the General Plan Goal 1, “preserve and protect water resources and supply for long-term sustainability,” includes Policy 1 that ensures sustainability by promoting the conservation of water resources. Goal 4 is to provide sufficient water supply and promote water safety and security and