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F_ <br /> 7-Eleven Store #20632 <br /> Quarterly Groundwater Monitoring Report (1 Q2003) <br /> . June 13, 2003 <br /> Page 3 <br /> Groundwater analytical results are presented on Figure 3 and are summarized in Tables 1 and 2 <br /> Chemical concentrations were generally consistent with historical data, except in MW-7 TBA was <br /> first reported in MW-7 this quarter, at a concentration of 28,000 ug/L <br /> PURGE AND RINSATE WATER DISPOSAL <br /> Water generated during well sampling and equipment cleaning is pumped into a SECOR truck- <br /> mounted water tank The water is transferred into properly labeled 55-gallon drums and stored on- <br /> site The drummed non-hazardous petroleum hydrocarbon contaminated water is transported <br /> quarterly by Belshire Environmental to Demenno Kerdoon in Compton, California, for disposal <br /> ATTACHMENTS <br /> Figures <br /> Tables <br /> Attachment A— Field Notes <br /> Attachment B—Certified Laboratory Analytical Reports and Chain-of-Custody Documentation <br /> cc Mr James Barthovde, Regional Water Quality Control Board - Central Valley Region <br /> Mr Harlin Knoll, San Joaquin County Environmental Health Department <br /> i <br /> 20632 03-10 Report SECOR International Incorporated <br />