55B - RESO - CIVIC CENTER WATER SUPPLY

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CITY OF SANTA ANA CIVIC CENTER FACILITIES STRATEGIC PLAN WATER SUPPLY ASSESSMENT WATER SUPPLY ASSESSMENT GENERAL INFORMATION Purpose of Assessment City of Santa Ana has been identified as the public water system that will supply water service to the Civic Center FSP Project. As the public water system, the City of Santa Ana is required by Section 10910 et seq. of the Water Code to prepare an assessment of water supply availability ( "assessment ") for defined types of projects. The Civic Center FSP Project has been found to be project requiring an assessment in accordance with Section 10912 et seq. of the Water Code (the proposed project includes more than 250,000 square feet of office building floor space). This assessment is required to be included in the environmental document for the Project, and, based on the record, make a determination whether projected water supplies are sufficient for the Project and existing and planned uses. Water Code Section 10910 contains the requirements for the information to be set forth in the assessment. Prior Water Suooly Assessments City of Santa Ana does not allocate particular supplies to any project, but identifies total supplies for its service area. Because of the City's aggregation of demands and supplies, each assessment prepared for the City is expected to be generally similar to the most recent assessment, with changes as needed to take into account changes, if any, in demands and supplies, and any updated and corrected information obtained by the City. Previously assessed projects' water demands have been included within the City's updated water model and have been found to be consistent with the City's 2015 Urban Water Management Plan. Supporting Documentation City of Santa Ana prepared the 2015 Urban Water Management Plan (UWMP) us required by statute. The UWMP contains the defined elements listed in the statute (Water Code Section 1063 t, et seq.) and includes water supply and demand issues. In addition, the City recently completed a hydraulic modeling of its existing City's water system. The model demands were developed and allocated based upon individual account consumption data. This consumption data was then compared and adjusted to be consistent with the 2015 total water demands included within the 2015 UWMP. The City will continue to update this hydraulic model to include near -term and buildout conditions. This hydraulic model and its water demand data can be used to confirm impacts of future projects as well as to confirm if there is adequate water supply to meet the demands of these future projects. 5 NEPN63