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Local Guidelines for Implementing the <br />California Environmental Quality Act (2023) INITIAL STUDY <br /> <br /> <br />2023 City of Santa Ana Local Guidelines 5-13 ©Best Best & Krieger LLP <br />supply for the proposed project and water received in prior years pursuant to those entitlements, <br />rights, and contracts, and further information is required if water supplies include groundwater. <br />The water assessment must determine the ability of the public water system to meet existing and <br />future demands along with the demands of the proposed water demand project in light of existing <br />and future water supplies. This supply demand analysis is to be conducted via a twenty-year <br />projection, and must assess water supply sufficiency during normal year, single dry year, and <br />multiple dry year hydrology scenarios. If the public water agency concludes that the water supply <br />is, or will be, insufficient, it must submit plans for acquiring additional water supplies. <br />The city or county may grant the public water agency a thirty (30) day extension of time to <br />prepare the assessment if the public water agency requests an extension within ninety (90) days of <br />being asked to prepare the assessment. If the governing body of the public water system fails to <br />request and receive an extension of time, or fails to submit the water assessment notwithstanding <br />the thirty (30) day extension, the city or county may seek a writ of mandamus to compel the <br />governing body of the public water system to comply. <br />If a water-demand project has been the subject of a water assessment, no additional water <br />assessment shall be required for subsequent water-demand projects that were included in the larger <br />water-demand project if all of the following criteria are met: <br />(1) The entity completing the water assessment concluded that its water supplies are <br />sufficient to meet the projected water demand associated with the larger water- <br />demand project, in addition to the existing and planned future uses, including, but <br />not limited to, agricultural and industrial uses; and <br />(2) None of the following changes has occurred since the completion of the water <br />assessment for the larger water-demand project: <br />(A) Changes in the larger water-demand project that result in a substantial <br />increase in water demand for the water-demand project; <br />(B) Changes in the circumstances or conditions substantially affecting the <br />ability of the public water system identified in the water assessment to <br />provide a sufficient supply of water for the water demand project; and <br />(C) Significant new information becomes available which was not known and <br />could not have been known at the time when the entity had reached its <br />assessment conclusions. <br />(3) The city or county shall include the water assessment, and any water acquisition <br />plan in the EIR, negative declaration, or mitigated negative declaration, or any <br />supplement thereto, prepared for the project, and may include an evaluation of the <br />water assessment and water acquisition plan information within such <br />environmental document. A discussion of water supply availability should be <br />included in the main text of the environmental document. Normally, this discussion <br />should be based on the data and information included in the water supply <br />assessment. In making its required findings under CEQA, the city or county shall <br />determine, based on the entire record, whether projected water supplies will be