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those structures, then potentially significant impacts would occur. Implementation of Mitigation <br />Measure MM-OZ 4.4-1 will ensure that no significant impacts on historical resources would occur. <br />Archaeological Resources <br />The Certified EIR stated that no known archaeological resources exist within the Overlay Zone, <br />but archaeological resources have been documented within and near the City of Santa Ana. In <br />addition, the Overlay Zone has already been subject to extensive disruption from previous <br />development and may contain artificial fill materials. As such, any archaeological resources which <br />may have existed within the Overlay Zone have likely been disturbed. While not expected, the <br />remote potential exists that construction activities associated with ground disturbance within the <br />Overlay Zone may unearth undocumented archaeological resources. However, implementation <br />of Mitigation Measures MM-OZ 4.4-2 and MM-OZ 4.4-3 will ensure that no significant on <br />archaeological resources would occur. <br />Human Remains <br />The Certified EIR stated that no formal cemeteries are known to have occupied any portion of the <br />Overlay Zone, so any human remains encountered would likely come from archaeological or <br />historical archaeological contexts. Human burials, in addition to being potential archaeological <br />resources, have specific provisions for treatment in Section 5097 of the California Public <br />Resources Code (PRC) and Sections 7050.5, 7051, and 7054 of the California Health and Safety <br />Code (HSC). Because no know archaeological sites are present in the Overlay Zone area and <br />the area is underlain by disturbed soils, the presence of human remains is remote. However, if <br />remains are encountered, disturbing these remains could violate PRC and HSC provisions, as <br />well as destroy the resource. Implementation of Mitigation Measure MM-OZ 4.4-5 will ensure that <br />this impact will be less than significant by ensuring appropriate examination, treatment, and <br />protection of human remains, if any are discovered. <br />Mitigation Measures <br />MM-OZ 4.4-1 The City of Santa Ana shall require as part of the environmental review of <br />development projects within the Overlay Zone that impacts to potentially <br />significant historic resources be considered. If any existing structures on a <br />proposed development site are at or approaching 50+ years of age at the time <br />of CEQA review, the City shall retain the services of a qualified architectural <br />historian to conduct a field survey of the structure in question and technical <br />study to determine its potential historical significance and develop mitigation <br />measures as necessary. <br />MM-OZ 4.4-2 Due to the lack of cultural resource studies for the project site and in order to <br />avoid damaging any unidentified cultural resources, a qualified archaeologist <br />should be retained to monitor any significant ground -disturbing activities in <br />undeveloped areas within the Overlay Zone, and any deep (10' or deeper) <br />ground -disturbing activities in all areas of the Overlay Zone. <br />Cabrillo Town Center City of Santa Ana <br />Technical Memorandum August 2023 <br />City Council 18 — 524 10/3/2023 <br />