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6920 Koll Center Parkway <br /> Suite 216 <br /> Pl " Claytoti <br /> easanton,CA 94566 <br /> 925.426.2600 _. GROUP SERVICES <br /> Fax 925.426.0106 <br /> August 2, 2004 D <br /> AUG 0 4 2004 <br /> ENVIRONMENT HEALTH <br /> Mr. Mike Infurna PERMIT/SERVICES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DEPARTMENT <br /> 304 East Weber Avenue, 3rd Floor <br /> Stockton, California 95202 <br /> Clayton Project No. 70-05319.00 <br /> Subject: Workplan to Complete Soil Sampling at the San Joaquin General Hospital <br /> Related to a Gasoline Fuel Spill <br /> Dear Mr. Infurna: <br /> Clayton Group Services,Inc. (Clayton) is pleased to present this workplan to collect soil <br /> samples at the San Joaquin General Hospital located at 500 West Hospital Road in <br /> French Camp, California(the Site). <br /> BACKGROUND <br /> Clayton understands the Hospital had a small, 25-to 50-gallon, spill of unleaded gasoline <br /> to the ground around the aboveground tank pad. The Hospital contracted with RAMOS <br /> to respond to the spill,and RAMOS removed soil from the impacted area and placed it in <br /> five 55-gallon drums. The soil area removed was adjacent to the tank pad and measured <br /> approximately 5 feet x 5 feet x 1.5 feet deep. Therefore,approximately 37 cubic feet of <br /> soil were removed. <br /> The San Joaquin County Environmental Health Department(SJCEHD)requested testing <br /> the soil and providing a map of the sampling locations. It is our understanding that the <br /> groundwater in the area is approximately 40 feet below the ground surface(bgs). It is <br /> unlikely that a small spill up to 50 gallons could leach 40 feet through the soil to <br /> groundwater, especially if RAMOS was onsite and removed the soil within a few hours <br /> of the spill. In addition to the depth to groundwater and the speed of RAMOS' response, <br /> another key factor that would limit the leaching potential of the gasoline is the soil <br /> lithology present beneath the site. Clayton will document the lithology at the site during <br /> the upcoming soil sampling. <br /> PUSAESTROJECTS\2005105319 SJ Countyworkplan.doc <br />