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WORK PLAN FOR PRELIMINARY <br /> SOIL AND GROUND WATER INVESTIGATION <br /> November I995 <br /> Shockey Trucking <br /> 850 Milgeo Avenue <br /> Ripon, California <br /> 1.0. INTRODUCTION <br /> In accordance with the: request of Mr. Lee Shockey of Shockey Trucking, Advanced <br /> GeoEnvironmental, Inc. (AGE) has prepared this Work Flan for the installation of four probings at <br /> 850 Milgeo Avenue, in Ripon, California (the site). The location of the site is depicted in Figure 1. <br /> A plan of the site is included in Figure 2. <br /> The investigation is performed in accordance with San Joaquin County Public Health Services - <br /> Environmental Health Division and Central Valley Regional Water Quality Control Board guidelines <br /> for the investigation of underground storage (UST) sites. <br /> 2.0. BACKGROUND <br /> 2.1. SITE LOCATION <br /> The site is located on west side of Milgeo Avenue, at the intersection Wilma Road, adjacent to <br /> Highway 99. Local land use in the immediate vicinity of the site is agricultural and industrial; <br /> residential areas are located south of the site. <br /> 2.2. lJNDERGROUND STORAGE TANK REMOVAL <br /> It is ouâ–º-understanding that six USTs were removed from the property in April 1994. The first UST <br /> contained waste oil and the second UST contained diesel fuel. Four additional USTs contained <br /> unleaded- gasoline. Petroleum hydrocarbons were detected in soil samples collected from beneath the <br /> diesel fuel UST at the time of removal. <br /> Analytical results indicated that soil removed from the former diesel fuel UST excavation was <br /> contaminated. However. the soil excavated from the each tanks pit was subsequently used to backf i1 <br /> the identical tank excavation. <br /> 2.3. GROUND WATER DEPTH AND FLOW DIRECTION <br /> As of October 1995, ground water near the site was at a depth of 19 feet below surface grade (bsg). <br />