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q Site Background Information : Stallworth Auto Sales Page 4 of 11 feet bsg , at a concentration of 86 pg/I . 1 ,2-DCA was detected in the water samples collected from 71 -74 feet bsg , 126- 129 feet bsg and 145- 148 feet bsg at concentrations of 1 . 3 pg/I , 1 . 8 pg/I and 11 pg/l , respectively. On 24 June 2002 , two ground water monitoring wells (MW-5 and MW-6 ) were installed at the site . MW-5 and MW-6 are screened from 20 feet to 40 feet bsg . • No soil samples were collected from boring MW-6 . A total of 3 soil samples collected from well boring MW-5 were analyzed for TPH-g , TPH-d , BTEX, the suite of five fuel additives , 1 , 2-DCA and EDB . No analytes were detected at or above laboratory reporting limits . • After the installation and development of the two ground water monitoring wells on- site , all on-site wells were sampled . The ground water samples were analyzed for TPH-g , TPH-d , BTEX, the five fuel additives, 1 , 2-DCA and EDB . • TPH-g was detected in the water samples collected from MW- 1A and MW-6 at concentrations of 140 , 000 pg/I and 1 , 600 pg/I , respectively; TPHA was detected in water sample MW- 1A at a concentration of 37 , 000 pg/I . • BTEX compounds were detected in the water samples collected from MW- 1A and MW-6 at concentrations as high as 1 ,400 pg/I benzene, 51 , 000 pg/I toluene , 5 , 500 pg/I ethylbenzene and 26 ,000 pg/I total xylenes, in sample MW- 1A. • EDB was detected in the water sample collected from MW- 1A at a concentration of 210 pg/I . TBA was detected in water sample MW-6 at a concentration of 25 pg/I . In addition , the volatile organic compounds isopropyl benzene , n-propylbenzene , n- butylbenzene and napthalene were detected in water sample MW-6 at concentrations of 35 pg/I , 66 pg/I , 10 pg/I and 7. 0 pg/I , respectively. • No other analytes were detected at or above laboratory reporting limits in the ground water samples. On 15 , 16 and 17 June 2004 , soil borings CPT-2 , CPT-3 and CPT-4 were 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 initial borings. Twin borings were then advanced adjacent to the initial boring to collect grab ground water samples from selected depths . • Ground water samples were collected from CPT-2 at 105 to 109 feet bsg , 127 to 131 feet bsg , and 172 to 176 feet bsg ; ground water samples were collected from CPT-3 at 179 to 183 feet bsg , and 195 to 199 feet bsg ; and from CPT-4 at 76 to 80 feet bsg , 143 to 147 feet bsg , and 189 feet and 193 feet bsg . Advanced GeuEnvironmental, Inc.