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F R - – — -- - <br /> 7-Eleven Store#20632 <br /> 10 Quarterly Groundwater Monitoring Report (3Q2003) <br /> November 25, 2003 <br /> Page 3 <br /> GROUNDWATER SAMPLE ANALYSES AND RESULTS <br /> The groundwater samples collected from MW-1, MW-2, MW-3, MW-4R, MW-5, MW-6, and MW-7 <br /> were analyzed for the presence of total petroleum hydrocarbons as gasoline (TPHg), benzene, <br /> toluene, ethylbenzene, and total xylenes (BTEX), and fuel oxygenates MtBE, tert-butyl alcohol <br /> (TBA), dusopropyl ether (DIPS), ethyl-tert-butyl ether (EtBE), and tert-amyl-methyl ether (TAME) <br /> using EPA Method 8260B The certified laboratory analytical report and chain-of-custody <br /> documentation are presented as Attachment B <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 <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 /> 20632 03-3Q Report doc SECOR tntemationa!incorporated <br />