75C - PH - BRISTOL EIR FROM WARNER TO ST. ANDREW

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AREA PREHISTORY ANV HTSTORV: PALEONTOLOGY: The following section of this report was prepared by Mr. Rodney E. Raschke, an Orange County Certified Paleontologist. A review of the latest published geological map of the area reveal- ed that Bristol Street between Earner Avenue and First Street is under- lain by Quaternary Aalluvium (Morton et al. 1)73). These deposits were laid down by the Santa Ana River. Typically these deposits are less than 10,000 years old, which uiakt�s them geologically too young to contain important fossils. There are no confirmed reports of fossils froin these deposits in the Santa Ana area. There are unconfirmed questionable reports of the remains of "Ice Age" animals supposedly recovered From the alluviul deposiLS, However, no fossils are currently available to support these reports. Quaternary alluvium is considered to have a low paleontological sensitivity or potential for the discovery of fossils during the develop- ment of an area underlain by these depoists. Eased on the low paleontological sensitivity of the rock unit exposed in the Bristol Street area and the shallow nature of the excavations as- sociated with the proposed project it is unlikely that there will be any adverse impact on the paleontological resources in the Santa Ana area. Therefore, no paleontological monitoring will be necessary during the widening of Bristol Street between first Street and Warner Avenue. The above evaluation is based on a review of the published and un- published geological and paleontological literature of the area and the locality records of the Natural History Museum of Los Angeles County and 75C -7136