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Urila h Inc . <br /> An Environmental Services Company <br /> 1Cakl <br /> April 12 , 1991 UR 19 1991' <br /> ENVIRONMENTAL HEALTH <br /> Mr. Al Williamson PERMIT/SERVICES <br /> AAA Tank Removal <br /> 4900 N. Highway 99 , #206 <br /> Stockton, CA 95212 <br /> Re: Soil Sampling Performed At Don's Buggie Shop, 3245 <br /> Wilson Way, Stockton, CA <br /> Dear Mr. Williamson: <br /> On February 27 , 1991 , staff of Uriah, Inc . performed soil <br /> sampling at the above referenced site attendant to the <br /> excavation and removal of one 1 ,000 gallon underground <br /> gasoline fuel storage tank in order to determine the <br /> presence, if any , of hydrocarbon contamination of the soil . <br /> According to information you provided Uriah, this tank may <br /> have contained stove oil in the past, however, it is known <br /> to have most recently contained regular gasoline. <br /> METHODOLOGY <br /> As directed by Ms . Letitia Resch, Registered Environmental <br /> Health Specialist with the Environmental Health Division of <br /> San Joaquin County Public Health Services , four (4) <br /> discrete soil samples were obtained from the tank pit and <br /> beneath the product line attendant to the removal of the <br /> above referenced tank (see Site Map, attached, for specific <br /> sampling locations ) . Soil sample #A1 was collected by <br /> Uriah staff from beneath the fill end at a depth of 9 .0 ' <br /> below ground surface (bgs) and #A2 from beneath opposite <br /> the fill end of the referenced tank at a depth of 10 .0 ' <br /> (bgs) from native soil 1 to 2 feet below the backfill- <br /> native soil interface. Soil samples #A3 and A4 were <br /> obtained from native soil 2 ' beneath each end of the <br /> product line (#A3 adjacent to the the underground storage <br /> tank and #A4 adjacent to the pump island) . In each case, <br /> the soil to be sampled was obtained from an undisturbed <br /> block of soil brought to grade in a backhoe bucket by first <br /> removing the top 2 inches of soil and then driving a clean, <br /> brass sample tube into the soil , completely filling each <br /> sample tube with a consolidated sample of soil . The ends <br /> of each sample tube were then promptly covered with teflon <br /> 464 Lindbergh Avenue 0 Livermore, California 94550 0 (415) 455-4991 <br />