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ISite Background Information <br /> COUNTRY CLUB FOOD & FUEL <br /> 1856 Country Club Boulevard, Stockton, California <br /> IUNDERGROUND STORAGE TANK REMOVAL <br /> On 05 March 1999, one 10,000-gallon diesel UST and two 10,000-gallon gasoline USTs and <br /> associated fuel dispensers and product piping were removed from the site Laboratory analysis of soil <br /> samples collected from beneath the former UST areas detected total petroleum hydrocarbons <br /> quantified as gasoline and diesel(TPH-g and TPH-d,respectively)at concentrations up to 300 mg/kg <br />' (milligrams per kilogram) Volatile aromatic compounds benzene, toluene, ethylbenzene, and <br /> xylenes (BTEX) were detected at concentrations up to 0 29 mg/kg, methyl tertiary-butyl ether <br /> I (MTBE) was detected in soil samples at concentrations up to 0 54 mg/kg <br /> Laboratory analysis of three grab ground water samples collected from beneath the former UST areas <br /> detected dissolved TPH-g at concentrations up to 5,900 µg/1 (micrograms per liter), BTEX <br /> compounds were detected in grab ground water samples at concentrations up to 0 29 µg11, MTBE <br /> was detected in grab ground water samples at concentrations up to 0 54 µg/1 <br /> PREVIOUS SITE ASSESSMENT ACTIVITIES <br /> • Four ground water monitoring wells were installed on the site on 10 July 2000 A total of 8 soil <br /> samples were collected and analyzed for TPH-g, TPH-d, BTEX, MTBE, and the suite of five <br /> oxygenated fuel additives by EPA Method 8260 Modified None of the analytes were detected at <br /> concentrations at or above the laboratory reporting limits <br /> To date, eleven quarterly monitoring events have been conducted at the site, MTBE has been the <br /> only analyte of concern detected in the ground water samples The vertical and the western, eastern, <br /> and southern lateral extents of the MTBE plume have not been defined <br /> I <br /> I <br /> Advanced GeoEnvironmental,Inc <br />