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Report on Additional Site Assessment and Soil Vapor Extraction Testing 5 <br /> 7-Eleven Store No 20632,4627 Da Vinci Drive Stockton,CA August 14,2002 <br /> Extracted flowrates were anomalously high given subsurface sod types, preliminary SVE observations will <br /> require additional verification through further testing <br /> 60 CONCLUSIONS AND RECOMMENDATIONS <br /> Permitting/access to install additional downgradient monitoring weli(s) as requested by the SJCPHS is <br /> underway The nearest downgradient well location is on private property, and new well installation is <br /> scheduled for late third quarter 2002 at this time Groundwater monitoring well groundwater analytical <br /> data and flow gradient information will be discussed in the second quarter 2002 monitoring report <br /> Further vertical delineation will also be pursued if requested by the SJCPHS, based on dissolved MTBE <br /> levels of 5,700 µg/L persisting to depths of 40 feet bg <br /> Site path forward, including any required further assessment and/or remediation, will be discussed with <br /> the SJCPHS, and implemented in accordance with agency requirements as documented in subsequent <br /> submittals <br /> a <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 20632sar doc <br /> - <br />