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City of Santa Ana <br />Environmental Checklist <br />building. These ongoing improvements began in 2007 and are estimated to be completed prior to <br />commencement of the proposed project. <br />OCSD facilities are required to comply with the Santa Ana RWQCB wastewater treatment <br />requirements, and to maintain and follow the MS4 permit, which is the U.S. Environmental <br />Protection Agency (EPA) NPDES permit that regulates discharge of treated effluent into receiving <br />waters (e.g., the Santa Ana River Basin). In 2002, the OCSD adopted an 18 -year Capital Improvement <br />Program (CIP), which identified 125 projects related to upgrading and repairing wastewater <br />facilities in accordance with the wastewater treatment requirements of the Santa Ana RWQCB. <br />These projects are intended to assure that facilities continue to meet or exceed the wastewater <br />treatment requirements established by the Santa Ana RWQCB. <br />As part of the project approval process, the project applicant would be required to provide all onsite <br />sewer infrastructure and pay appropriate sewer system connection fees. Existing City Public Works <br />Department requirements would ensure that wastewater treatment requirements of the RWQCB are <br />not to be exceeded. Therefore, wastewater generated by the proposed project would not cause OCSD <br />to exceed wastewater treatment requirements of the Santa Ana RWQQB. As such, project impacts to <br />wastewater treatment requirements would be less than significant. <br />b. Require or result in the construction of new water or wastewater treatment facilities or <br />expansion of existing facilities, the constriction of which could cause significant environmental <br />effects? <br />Less - than - Significant Impact. <br />Water Facilities. The City of Santa Ana obtains water froth two sources: groundwater and imported <br />water. Approximately 62% of the City's water supply is derived from groundwater that is pumped to <br />the surface from 20 City- operated wells. The other 38% of water is imported from the Metropolitan <br />Water District of Southern California (Metropolitan; City of Santa Ana 2010). The Metropolitan <br />water is treated at either the Robert B. Diemer Filtration Plant located in Yorba Linda or the <br />Weymouth Filtration Plant in La Verne before being delivered to the city. There are a total of seven <br />Metropolitan connections located in the city (City of Santa Ana 2005). <br />There is an existing 12 -inch water supply pipeline in North Fairview Street, which has supplied <br />water to the project site. The proposed project includes development of connections to the existing <br />water supply line pursuant to City requirements. <br />As described in Chapter 2, "Project Description," the project site is currently vacant, but was <br />previously used for hospital and medical facility uses since 1964. Therefore, existing water <br />infrastructure is developed to serve the project site. Table 3 -28 provides a comparison of the <br />historic water demand from the medical uses and the anticipated water demand for the proposed <br />project uses. <br />The Academy Charter High School 12 <br />3 -103 June 20 <br />Initial Study /Mitigated Negative Declaration iCf 0092011 <br />;197 <br />