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.1 <br /> f� yy <br /> ti�f y <br />� <br /> GROUND ZERO ANALYSIS, INC. 99 Q%JEP - I Ph i2. 5 <br /> 1714 Main,Street <br /> Escalon,Californma 95320-1927 <br /> Telephone (209)838-9888 <br /> Faesimde (209)838-9883 <br /> August 31, 1999 <br /> Mr ,Michael Infuma <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Subject Sod Excavation Report <br /> Woolsey Oil, Inc - Cardlock Facility <br /> 1501 W Charter, Stockton, California (Site Code 508175) <br />• Dear Mr Infurna <br /> This letter report is submitted on behalf of Woolsey Oil, Inc to summarize the results of the soil <br /> excavation activities conducted June 16 and June 30, 1999 at the above referenced site The <br /> excavation was performed to remove hydrocarbon impacted soil and groundwater in accordance with <br /> the Corrective Action Workplan approved by the San Joaquin County PHS/EHD June 3, 1999 <br /> BACKGROUND INFORMATION <br /> Initial Investigation and Underground Storage Tank Removal <br /> The site formerly operated as an automated refueling facility, and had previously utilized two <br /> 4,000-gallon underground storage tanks (UST's) containing diesel fuel and one 4,000-gallon UST <br /> containing unleaded gasoline <br /> On October 9, 1998, Wallace Kuhl & Associates supervised the drilling and sampling of two soil <br /> borings Laboratory analysis of soil samples collected near the UST's and the dispenser island <br /> detected elevated levels of petroleum hydrocarbons Analytical results are summarized in Table 1 <br /> The locations of the borings are shown on Figure 2 <br /> Woolsey/reports/soilmum doe <br /> 1 <br />