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' 20 January 2005 AGE-NC Project No 97-0343 ' Page 3 of 21 ' xylene TPH-d and xylene were detected in the soil sample at concentrations of 3,000 milligrams per kilogram(mg/kg) and 0 188 mg/kg, respectively Benzene and toluene were not detected above the analytical method reporting limit of 0 01 mg/kg Based upon results of the soil sample analysis, the ' EHD required assessment of the lateral and vertical extent of hydrocarbon-impacted soil and/or ground water in the area of the former UST 1 3.0. ASSESSMENT OF HYDROCARBON-IMPACTED SOIL AND GROUND WATER ' The following is a summary of significant assessment activities conducted to date at the former Fisco Warehouse site ' On 18 September 1997,five soil probe bonngs(B-1 through B-5)were advanced at the site to assess the lateral and vertical extent of petroleum-impacted soil TPH-g was detected in samples from B 1, B3 and B5 at concentrations as high as 14,000 ppm (reported as milligrams per kilogram) Benzene ' was detected in only one sample (B1-40),which contained a concentration of 0 042 ppm Toluene, ethylbenzene and xylenes were detected in samples from B1, B3 and B5 at concentrations as high as 1,600 ppm (xylenes in B5-25) TPH-d was detected in samples from B-1, B-3 and B-5 at concentrations as high as 12,000 ppm (B3-10, B3-15) None of the samples analyzed from borings B-2 or B-4 contained detectable concentrations of TPH-g, TPH-d, BTEX or MTBE From 22 to 24 February 2000, four soil borings (MW-1 through MW-3 and B-6)were advanced at the site TPH-g was detected in 9 of the 16 soil samples analyzed at concentrations as high as 6,700 parts per million(ppm,reported as milligrams per kilogram), TPH-d was detected in 7 of the 16 soil samples analyzed at concentrations as high as 5,800 ppm Benzene was detected in 4 of the 16 samples at concentrations as high as 0 027 ppm Toluene, ethylbenzene and xylenes were detected in 11 of 16 samples at concentrations as high as 370 ppm MTBE was not detected in any samples analyzed Petroleum hydrocarbons were not detected in 5 of the 16 soil samples analyzed In February 2001,four pilot soil bonngs were advanced at the site Pilot borings MW4 through MW7 were completed as ground water monitoring wells using two-inch diameter PVC casing with 0 020- inch slotted screen installed from approximately 60 feet to 40 feet bsg and with blank casing extended to the surface A total of 16 soil samples were analyzed for TPH-g,TPH-d,BTEX,MTBE, EDB, 1,2-DCA and the suite of five fuel additives None of the analytes were detected at or above laboratory reporting limits in the soil sample analysis On 10 and 11 January2002, three soil bona CPT-1, CPT-2 and CPT-3 were advanced on-site g ( ) utilizing CPT technology to model the geological and hydro-geological framework and to assess potential dissolved petroleum-migration pathways beneath the site Soil borings CPT-1,CPT-2 and CPT-3 were advanced vertically to total depths of 96 feet below surface grade (bsg), 134 feet bsg Advanced GeoEnvironmental,Inc