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rM; WWX <br /> ; <br /> AppliG'd GeOSy 4191-E Power Inn Road, Sacramento,CA 95826 (916)452-2901 <br /> e FREMONT •IRVINE o HOUSTON • BOSTON •SACRAMENTO a CULVER CITY •,SAN JOSE <br /> July 13, 1987 <br /> ` 87048-1 <br /> Mr. Robert Phillips <br /> Sharibob Inc. <br /> 11490 Alpine Road <br /> Stockton, California 95212 <br /> Subject: Transmittal of Report No. 87048-1, Subsurface <br /> Environmental Investigation, Soil Boring and <br /> Monitoring Well Installation at Beacon Station, <br /> 0875, 13975 East Highway 88, Locke£ord, California <br /> Mr. Phillips- <br /> This report presents our findings from the environmental <br /> investigation conducted at the above-referenced site. The <br /> purpose of the investigation was to evaluate potential . <br /> hydrocarbon contamination of subsurface soil and ground water at <br /> the site. The investigation included the drilling of four soil <br /> borings, installation of four 2-inch diameter groundwater <br /> monitoring wells, well development and surveying, ground water <br /> sampling, and laboratory analyses. <br /> This investigation indicates that ground water beneath the site <br /> has hydrocarbon contamination that is not within generally <br /> accepted drinking water standards recommended by the state <br /> Department of Health Services. Two, open dry wells are located <br /> in catch basins adjacent to Highway 88. These dry wells act as <br /> drains for runoff (wash-downs, rain, product spills, etc.) from <br /> the product dispenser area and provide a conduit for the <br /> introduction of hydrocarbons into the soil and ground water. ' We <br /> recommend that the dry wells be destroyed. We also recommend <br /> that water in the ground water monitoring wells be sampled and <br /> analyzed quarterly. for dissolved hydrocarbon contamination to <br /> evaluate contaminate trends. <br /> In our opinion, if ground water useage warrants, or if ground <br /> water monitoring indicates the continuing or increasing <br /> introduction of hydrocarbon contamination into the ground water, <br /> the extent of ground water contamination should be further <br /> investigated by conducting a soil vapor investigation and/or by <br /> -- - ---- - - --excavating-selectively-located-boreholes-and-installing___ <br /> additional ground water monitoring wells.' <br />