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I Site Background Information : Stallworth Auto Sales Page 3 of 11 • One TPWg and TPH-d were detected in analyzed soil samples from boring MWA B at concentrations as high as 6 , 100 mg/kg and 2 ,600 mg/kg , respectively. BTEX compounds were detected in boring MW- 1 B soil samples at concentrations as high as 16 mg/kg , 220 mg/kg , 67 mg/kg and 360 mg/kg , respectively. Toluene was detected in the 25-foot soil sample collected from MW-2 at a concentration of 0 .0085 mg/kg . • Fuel oxygenates were not detected in the soil samples analyzed . • After the installation and development of the five ground water monitoring wells on- site , each well was sampled . The ground water samples were analyzed for the suite of five fuel additives and , with the exception of MW- 1B , for TPH-g , TPH-d and BTEX. • TPH-g was detected in the ground water samples collected from monitoring wells MW- 1 A, MW-2 and MW-3 at a maximum concentration of 380 ,000 pg/I (MW- 1A). TPH-d was detected in the ground watersample collected from monitoring well MW- 1A at a concentration of 13, 000 pgA . The highest concentration of hydrocarbon- impacted ground water resides in the area of the former USTs . • BTEX compounds were detected in the water samples analyzed from MW- 1A, MW- 2 and MW-4 at concentrations as high as 3, 000 pg/I , 100 ,000 pg/l , 6 , 500 pg/l and 32 , 000 pg/1 , respectively. Fuel oxygenates were not detected in the ground water samples analyzed . On 20 November 2001 , one soil boring (CPT- 1 ) was advanced on-site utilizing CPT technology to model the geological and hydrogeologic framework and to assess potential dissolved petroleum-migration pathways beneath the site . Lithologic data was collected from the boring . A twin boring was then advanced to collect grab ground water samples from selected depths. • Ground water samples were collected from CPT- 1 at the following intervals: 71 feet to 74 feet bsg , 104 feet to 106 feet bsg , 126 feet to 129 feet bsg and 145 feet to 148 feet bsg . • TPH-g was detected in all four water samples collected at concentrations of 16 , 000 micrograms per liter ( Ng/1), 500 pgA , 460 pg/1 and 140 , 000 pg/l , respectively. TPH-d was detected in three of the water samples collected at concentrations as high as 40 , 000 pg/I . • BTEX compounds were detected in all the water samples collected at concentrations as high as 560 pg/1 benzene , 12 , 000 pg/1 toluene , 3 , 000 pg/I ethylbenzene and 15,000 lag/I total xylenes. • DIPE was detected in the water sample collected from 126- 129 feet bsg at a concentration of 1 .4 pg/1 . EDB was detected in the sample collected from 145-148 Advanced GeoEnvironmental, Inc.