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1 <br /> 1 <br /> • - GEO-PHASE <br /> 1 - ENVIRONMENTAL <br /> 1 <br /> REPORT <br /> 1 Quarterly Groundwater Monitoring Event <br /> Winter 2001 <br /> 1 Cutter Lumber Site <br /> 3422 & 3430 S. El Dorado Street <br />' Stockton, California <br /> Project No 102 2 <br />' April 11,2001 <br /> 1.0 INTRODUCTION <br />' Groundwater monitoring wells were installed at the site in March of 1998 (see Report <br /> Groundwater Monitoring Well Installation and Winter 1998 Groundwater Monitoring, <br />' Cutter Lumber Site, dated April 24, 1998) The initial round of groundwater sampling was <br /> also completed at that time This report documents the twelfth quarterly round of <br /> groundwater sampling completed on March 12, 2001 <br />' 1.1 Site History <br /> The site of the subject gasoline release was discovered as a result of a groundwater <br /> monitoring event at the Western Lift Site in the southerly part of the subject Property (as <br />' shown in Figures 1, 2) during which a sample was collected from an on-site domestic well <br /> After a review of historic records, a former 1,000-gallon underground gasoline tank and an <br /> above ground diesel tank were identified along the western Property margin in the north <br /> I central portion of the site Subsequent soil borings confirmed that the release had impacted <br /> the vadose zone soil and the groundwater In March of 1998, seven groundwater monitoring <br /> wells were installed to monitor the groundwater plume Two wells, MW-1 and MW-4 still <br /> remain from the initial Western Lift investigation near the south end of the Property <br /> 2937 Veneman Ave,#5240 Geo-Phase Environmental Inc Phone(209)569-0293 <br /> Modesto,CA 95356 Fax(209)569-0295 <br /> I <br />