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r r �Op d7 <br /> GROUND ZERO ANALYSIS, INC. <br /> 1714 Maes Street <br /> Fscalon, California 95320 <br /> Telephone: (209)838-9888 <br /> Facsimile: (209) 838-9883 <br /> D <br /> December 17, 1999 ENEC <br /> S 21 <br /> IRON 7ggg <br /> AERN'M SNrgC y�q <br /> Mr Mchaellnfurna �RV/CESLTy <br /> San Joaquin County Public Health Services, <br /> Environmental Health Division <br /> 304 E Weber Ave, 3rd F1 <br /> Stockton, CA 95202 <br /> Subject Groundwater Monitoring Well Installation Report <br /> Woolsey Oil, Inc -Cardlock Facility <br /> 1501 W Charter, Stockton, California(Site Code 508175) <br /> Dear Mr Infurna <br /> Ground Zero Analysis, Inc (Ground Zero) is submitting this report summarizing the installation of <br /> three groundwater monitoring wells and analytical results of soul and groundwater sampling at the <br /> subject site (Figure 1) The work was conducted at the request of the San Joaquin County Public <br /> Health Services, Environmental Health Division (PHS/EHD) to determine the impact to groundwater <br /> from contaminants previously documented at the site <br /> SITE BACKGROUND <br /> The site formerly operated as an automated refueling facility, and had previously utilized two 4,000- <br /> gallon underground storage tanks(UST's) containing diesel fuel and one 4,000-gallon UST containing <br /> unleaded gasoline <br /> On October 9, 1998, Wallace Kuhl & Associates supervised the drilling and sampling of two soul <br /> bonngs Laboratory analysis of soul samples collected near the UST's and the dispenser island detected <br /> elevated levels of petroleum hydrocarbons Analytical results are summarnzed in Table 1 The <br /> locations of the bonngs are shown on Figure 2 <br /> 48 <br /> woolseychader=partslwelhptdoc <br />