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. Preliminary Site Assessment Work Plan - May 1998 <br /> RAIN WATER CAR WASH <br /> 420 West Yosemite Avenue, Manteca, California <br /> 1.0. INTRODUCTION <br /> In accordance with the request of Mr Phil Elder, Advanced GeoEnvironmental, Inc AGE has <br /> prepared this Preliminary Site Assessment Work Plan for collection of soil and ground water <br /> samples at 420 West Yosemite Avenue, Manteca, California The scope of work includes <br /> advancement of at least two angled and four vertical soil probe borings in the underground storage <br /> tank(UST) and dispenser areas The location of the site and the immediately surrounding area are <br /> illustrated on Figure 1, site structures and monitoring well locations are depicted on Figure 2 <br /> This Work Pian is prepared in accordance with the San Joaquin County Public Health Services - <br /> Environmental Health Division and Central Valley Regional Water Quality Control Board <br /> (CVRWQCB) guidelines for the investigation of UST sites <br /> 20. BACKGROUND <br /> 2 1 SITE LOCATION AND DESCRIPTION <br /> The site is located at 420 'Vv'est ` osciintc Avenue, on the southeast corner at the intersection of <br /> Yosemite Avenue and Jessie Street The site is located in a topographically flat area at an elevation <br /> betv,een 30 and 35 feet aboN t- mean sea level in the city of Manteca, San Joaqu�n Count}, California <br /> The site is within the northeast quarter of Section 5, Township 2 South, Range 7 East, Mount Diablo <br /> Base and Meridian (Manteca Quadrangle 7 5-Minute USGS Topographic Series, 1952, photo <br /> revised 1987) <br /> The site is presently operated as a fueling facility and a mini-market One 10 000-gallon gasoline <br /> UST and one 6 000-gallon gasoline UST are currently located on the. N,�est s«ti011 of the property <br /> 22 REGIONAL GEOLOGIC SETTING <br /> The property is situated within the Great Valley Geomorphic Province of Califoinia, a large <br /> elongate, northwest trending, asymmetric structural trough The Great Valley ProN ince has been <br /> filled with thick sequences of sediment ranging in age from Jurassic to Recent, creating a nearly flat- <br /> lying alluvial plain, extending from the Tehachapi Mountains in the south to the Klamath Mountains <br /> in the north The western and eastern boundaries of this province are comprised of the California <br /> Coast Range and the Sierra Nevada, respectively Rocks composing the basement complex of the <br /> province have not been completely defined but are behexed to be metamorphic quid igneous in onRip <br /> i <br /> Adianced GcoEn%ironmental, IIIc <br />