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i 15 November 2005 • AGE-NC Project No 95-0130 Page 4 of 10 • September 2001 -AGE installed two multi-level ground water monitoring wells(MW-6 and MW-7) to depths of approximately 142 feet bsg at the site to assess the vertical extent of petroleum-impact Screen intervals were installed at depths between 35 and 45 feet bsg (Interval A),50 and 55 feet bsg(Interval B),70 and 75 feet bsg(Interval C), 100 and 110 feet bsg(Interval D)and between 125 and 142 feet bsg(Interval E) TPH-g and BTEX-impacted water was detected from both wells at sampling intervals B,C,D and E at concentrations as high as 160,000 µg/l(Table 3), MTBE-impacted water was detected from MW-6 (B and C) and MW-7 (B, C and D) at concentrations as high as 420 µg/1, 1,2-DCA was detected in samples collected from MW-6(B and C)and from MW-7B at concentrations as high as 210 µg/1 Results of the September 2001 investigation were reported in Multi-Level Monitoring Well Installation Report- Third Quarter 2001, dated 01 March 2002, prepared by AGE • July 2003 - AGE installed one single-completion ground water monitoring well (MW-8) at the site to a depth of approximately 55 feet bsg to assess the westward extent of petroleum- impact, two ground water extraction wells (EW-1 and EW-2) were installed at the site to depths of 5 5 feet bsg as part of interim ground water remediation TPH-g was detected in soil samples collected from EW-1 at 40, 50 and 55 feet bsg and from EW-2 at 55 feet bsg at concentrations as high as 280 mg/kg(Table 2),BTEX compounds were detected in the same 40samples at concentrations ranging as high as 12 mg/kg xylenes in the 55 foot sample collected from EW-2, MTBE was detected in the 40-foot, 50-foot and 55-foot soil samples collected from EW-1 and the 55-foot soil sample from EW-2 at concentrations ranging as high as 0 22 mg/kg (EW 1-40), 1,2-DCA was detected in the 55-foot soil samples at EW-1 and EW-2 at concentrations of 0 022 mg/kg and 0 019 mg/kg,respectively TPH-g and BTX- impacted water was detected from the initial MW-8 samples at concentrations of 200 pg/1 TPH-g,3 5 pg/l benzene,5 7 µg/1 toluene and 3 5 µg/l total xylenes Results of the July 2003 investigation were reported in Monitoring Well Installation Report - July 2003, dated 25 February 2004, prepared by AGE • August 2004-An SVE interim remediation system was initiated and continuously operated at the site The SVE system utilized a manifold network of two-inch diameter, Schedule 40 PVC piping installed underground from SVE wells VW-1 through VW-3 to the inlet of the SVE remediation system The SVE remediation system consisted of an electric catalytic oxidizer vapor recovery system (Solleco Ecat 250 ) Initial influent SVE air flow samples detected TPH-g at concentrations as high as 98,000µg/1,BTEX compounds as high as 1,400 gg/l benzene, 5,500 µg/1 toluene, 690 dig/l ethylbenzene, 3,100 pg/l xylenes and MTBE as high as 520 pg/l Results of the August 2004 SVE interim remediation start-up were reported in Quarterly Report - Third Quarter 2004, dated 29 December 2004, prepared by AGE • November 2004-A P&T interim remediation system was initiated and continuously operated at the site The P&T system utilized a manifold network of two-inch diameter, Schedule 40 • PVC piping installed underground from ground water extraction wells EW-1 and EW-2 to Advanced GeoEnvironmentab Inc