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` U Site Background Information: Former Curtiss Pontiac-Buick AGE-NC Project No. 96-0254 Page 2 of 7 WELL SURVEY A survey of ground water wells was conducted on 08 September 2000. Four ground water wells wit hin 2 ,000 f eet o f t he su bject p roperty we re id entified a s d escribed b elow. Additionally, nineteen ground water moritoring wells were,observed at 3 diferent locations. Domestic W ells: A ccording t o Mr. Jo e T oste, Jr., t he p roperty o wner, t here a re t wo domestic water wells on Toste Road, one on-ste (2450T6ste Road) andthe other at2480 Toste road; these wells supply water tothe site andthe businesses located on Toste Road. The on-site well is completed to'a total depth of 220 feet bsg and contains a well screen from 195 feet to 220 feet bsg. The well located at 24 80 Toste Road is app roximately 300 feet southwest of the site. According to Mr. Toste, this well is completed to a total depth of 200 feet. No other information could be obtained regarding this well or two other domestic wells observed at 2040 and 2120 Grant Line Road. Threatened Well: The on-site domestic water well at 245 0 Toste Road is I orated just beyond the southern margin of the contaminant pi ume and up-gradient of the former dispensers and UST are a. This water well was sampled dur ing the first and se cond quarters of 2002 for total petroleum hydrocarbons quantified as gasoline and diesel (TFH-g and TPH -d), benz ene, toluene; ethylbenzene, total x ylenes (BTEX) and s even fuel additives. None of the analytes were detected at or above laboratory reporting limits in the samples collected. UST REMOVAL AGE was informed that three USTs, dispensers and piping were removed from the site on 31 Ju ly 1991, an d tha t the remo val w as w itnessed by,a repre sentative of the EHD; additional information regarding history of the UST use, tank tests, product inventory and repairs are not known to AGE. Six soil samples were collected from the sidewalls during the 31 July 1991 excavation, at a depth of five feet below surface',grade (bsg); no Excavation floor samples were collected because groundwater was encountered in the excavation at a depth of approximately six feet. In addition, one grab groundwater sample was collected from theexcavation and one soil sample was collected beneath the piping/dispenser area. The soil and ground water samples were analyzed for TPH=g, BTEX, lead and ethylene dibromide (EDB). Concentrations of TP H-g and BT EX compo unds were dete cted in each so it sample collected from the UST excavation. TPH-g was detected from the east wall of the U ST excavation atamaximum concentration of 62 miligrams perkiogram (mg/kg)and fromthe west wall of the UST excavation at a maximum concentration of 26 mg/kg. Benzene was Advanced GeoEnvironmental,Inc.