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Our next closest vertebrate fossil locality in older Quaternary sediments is probably LACM 4943, <br />northeast of the proposed project area in the City of Orange between the Newport Freeway <br />(Highway 55) and the Santa Ana River near the intersection of Glassell Street and Fletcher <br />Avenue. Locality LACM 4943 produced a specimen of fossil horse, Equus, at a depth of 8-10 <br />feet below the surface. <br />Surface grading or shallow excavations in the proposed project area probably will not <br />uncover significant vertebrate fossil remains. Excavations that extend down into the older <br />Quaternary deposits, however, may well encounter significant fossil vertebrate specimens. Any <br />substantial excavations below the uppermost layers in the proposed project area, therefore, <br />should be monitored closely to quickly and professionally recover any fossil remains discovered <br />while not impeding development. Also, sediment samples from these deposits should be <br />collected and processed to determine the small fossil potential in the proposed project area. Any <br />fossils recovered during mitigation should be deposited in an accredited and permanent scientific <br />institution for the benefit of current and future generations. <br />This records search covers only the vertebrate paleontology records of the Natural History <br />Museum of Los Angeles County. It is not intended to be a thorough paleontological survey of <br />the proposed project area covering other institutional records, a literature survey, or any potential <br />on-site survey. <br />Sincerely, <br />Samuel A. McLeod, Ph.D. <br />Vertebrate Paleontology <br />enclosure: invoice