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Site Background• kg Information <br /> ma ion <br />' COUNTRY CLUB FOOD & FUEL <br /> 1856 Country Club Boulevard, Stockton, California <br />' UNDERGROUND 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 /> (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 µg/l, MTBE <br /> was detected in grab ground water samples at concentrations up to 0 54 gg/1 <br /> PREVIOUS SITE ASSESSMENT ACTIVITIES <br /> lie 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 />' Five direct push soil borings were advanced on 23, 25, and 27 May, 2005 with a van-mounted <br /> GeoProbe unit to further assess subsurface lithology and to define the ground water contamination <br />' To date,MTBE has been the only analyte of concern detected in the ground water samples By May <br /> 2005, the lateral extent of ground water contamination was defined by MW-2 to the north, boring <br />' B-4 to the east,MW-4 to the southeast,boring B-5 to the south,boring B-3 to the west, and boring <br /> B-2 to the northwest, vertical definition was provided by boring B-1 <br /> I <br /> I <br /> Advanced GeoEnvironmentai,Inc <br /> I <br />