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04 February 2004 AGE-NC Project No 95-0173 IPage 5 of 10 I TPH-g was detected In the 20-, 35- and 50-foot soil samples at concentrations of 2,700 milligrams per kilogram (mg/kg), 3,300 mg/kg and 3 8 mg/kg, respectively, TPH-g was not detected in the 65-foot soil sample Utilizing EPA Method 8260, BTEX compounds were detected In all four soil samples at concentrations ranging as high as 440 mg/kg xylenes In the 35-foot soil sample Benzene was I detected in all samples at a maximum concentration of 15 mg/kg (EW 1-35) In addition, the VOCs 1,2,4-tnmethylbenzene, and 1,3,5-tnmethylbenzene were detected in all samples at maximum concentrations of 250 mg/kg and 66 mg/kg, respectively, n-butylbenzene, sec-butylbenzene, ' rsopropylbenzene and n-propylbenzene, in the 20-, 35- and 50-foot samples at maximum concentrations of 18 mg/kg, 7 mg/kg, 8 1 mg/kg and 26 mg/kg, respectively, tert-butylbenzene In sample EW 1-20 at 0 18 mg/kg, p-isopropyl toluene In samples EW 1-20 and EW 1-35 at a maximum ' concentration of 4 3 mg/kg, and napthalene In samples EW1-35 and EW1-50 at a maximum concentration of 39 mg/kg fTotal lead was detected in the 4 1 composite of soil samples collected from EW-1 at a concentration of 8 3 mg/kg '. No other constituents of concern were detected from the laboratory analysis The analytical results of selected soil samples are summarized in Table 1 The laboratory reports (Castle Analytical ' Laboratory Reference No 5400 and McCampb ell Analytical Inc Work Order 0302091)and chain- of-custody forms are included in Appendix C ' 3.0. GROUND WATER AQUIFER PUMPING TEST ' Variable- and constant-rate ground water aquifer pumping tests were performed on 09 and 11 July_ 2003, respectively, to assess the general ground water aquifer characteristics and to assess aquifer response to ground water extraction The pumping tests consisted of extracting ground water from ' extraction well EW-1 utilizing a 4-inch diameter Grundfos Redi-flo pump Monitoring wells AW-1 (A and B), AW-2 (A and B), AW-4, MW-1, MW-2 and MW-3 were utilized as observation wells to determine the draw-down radius of influence Extracted ground water was containerized in an on- site 10,000-gallon steel Baker tank During the pumping tests, 7/8-inch diameter, model 3001 Solmst Levelogger pressure transducers ' were deployed in well EW-1 at a depth of 40 feet bsg and observation wells AW-1 A, AW-2A and MW-1 at a depth of 35 feet bsg to collect draw-down data Each pressure transducer was preprogrammed prior to the pumping test to log water levels at one-minute intervals,copies of semi- logarithmic plots of draw-down versus time and the water level data logged from EW-1, AW-1 • Advanced GeoEnvironmental,Inc