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1 15 November 2005 AGE-NC Protect No 95-0130 Page 3 of 10 to depths of 80 feet bsg Petroleum-impacted soil was encountered in all four boring locations at depths between 35 feet and 65 feet (Table 2) Dissolved TPH-g and BTEX compounds were detected in initial ground water samples from all three wells at concentrations up to 11,000 micrograms per liter (µg11) Results of the December 1994 investigation were reported in Preliminary Investigation and Evaluation Report(PIER)dated 10 April 1995,prepared by Geological Audit Services, Inc • December 1995 - Three soil vapor extraction (SVE) wells (VW-1,VW-2 and VW-3) were advanced to depths of 63 feet bsg near the former UST areas, one ground water monitoring well(MW-4)was advanced to a depth of 75 feet bsg and located in the warehouse building structure TPH-g and BTEX-impacted soil was encountered in all three SVE wells at depths between 15 feet and 60 feet at concentrations as high as 7,400 mg/kg, petroleum hydrocarbons were not detected in soil samples collected from MW-4 (Table 2) Dissolved TPH-g was not detected in initial ground water samples collected from MW-4 (Table 3) Results of the December 1995 investigation were reported in Corrective Action Plan (CAP), dated 20 March 1996, prepared by AGE • January 1996 - One ground water monitoring well (MW-5) was advanced off-site, approxunately 50 feet northwest of the former UST area to a depth of 70 feet TPH-g and BTEX-impacted soil was encountered at depths of 45 and 50 feet at concentrations as high as 940 mg/kg(Table 2) TPH-g and BTEX-impacted ground water was detected in the initial sample from MW-5 at a concentration of 23,000 µg/1(Table 3) Results of the January 1996 investigation were reported in the CAP An 8-hour SVE pilot test was conducted at the site by inducing a vacuum from well VW-1 B (screened 28 to 43 feet bsg) The pilot test was performed to provide vapor extraction data for proper system design of an SVE remediation system TPH-g and BTEX compounds were detected from influent SVE air flow samples at concentrations as high as 95,000 micrograms gg/1 Based on the observed results,a theoretical radius of influence for SVE at VW-1B was protected at approximately 30 feet Results of the January 1996 investigation were reported in the CAP • April 2000-Five soil borings(CPT-1,CPT-1 A,CPT-2,CPT-2A and CPT-3)were advanced on- and off- site to approximately 105 feet bsg utilizing cone penetrometer testing (CPT) technology to characterize the geological and hydra-geological framework and to assess preferential migration pathways Laboratory analysis of grab water samples detected substantial petroleum-impact from CPT-1A and CPT-2A to depths of 105 feet bsg (Table 4) Results of the CPT investigation were reported in Quarterly Report - Second Quarter 2000, dated 31 July 2000,prepared by AGE • September 2001 -AGE installed two multi-level.groundwater monitoring wells(MW-6 and • MW-7) to depths of approximately 142 feet bsg at the site to assess the vertical extent of Advanced GeoEnvironmental,Inc