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1 <br /> GEOTHASE <br /> 1 - ENVIRONMENTAL <br /> 1 <br /> REPORT <br /> 1 Quarterly Groundwater Monitor Lng Event <br /> Summer 2001 <br /> 1 Cutter Lumber Site <br /> 3422 & 3430 S. El Dorado Street <br />' Stockton, California <br />' Project No 102 2 <br /> December 19, 2001 <br /> 1.0 INTRODUCTION <br />' Groundwater monitoringwells were installed at the site in March of 1998 see <br /> � <br />' Report Groundwater Monitoring Well Installati 9n and Winter 1998 <br /> Groundwater Monitoring, Cutter Lumber Site, dated AlFril 24, 1998) The initial <br /> round of groundwater sampling was also completed a that time This report <br />' documents the fourteenth quarterly round of groundwater sampling completed <br /> on September 18th, 2001 <br /> 1.1 Site History <br /> The site of the subject gasoline release was discovered as a result of a <br /> groundwater monitoring event at the Western Lift Sit( in the southerly part of <br /> the subject Property (as shown in Figures 1, 2) during which a sample was <br /> collected from an on-site domestic well After a revs.-w of historic records, a <br />' former 1,000-gallon underground gasoline tank and an above ground diesel tank <br /> were identified along the western Property margin in ,he north central portion <br /> of the site Subsequent soil borings confirmed that the release had impacted the <br /> vadose zone soil and the groundwater In March of 1998, seven groundwater <br /> monitoring wells were installed to monitor the groundwater plume Two wells, <br /> MW-1 and MW-4 still remain from the initial Wester i Lift investigation near <br /> the south end of the Property <br /> 2937 Veneman Ave ,#B240 Geo-Phase Environmental Inc Phone (209) 569-0293 <br /> Modesto, CA 95356 Fax(209)569-0295 <br />