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15 November 2005 . AGE-NC Project No 95-0130 Page 3 of 10 • January 1995 - Three ground water monitoring wells (MW-1, MW-2 and MW-3) and one soil boring (B-6) were advanced at the site as part of site assessment activities Soil boring B-6 was advanced to a depth of 65 feet bsg, wells MW-1,MW-2 and MW-3 were advanced 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 (µg/1) 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 offsite, approximately 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 µg/l Based on the observed results,a theoretical radius of influence for SVE at VW-1 B was projected 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 hydro-geological framework and to assess preferential migration pathways Laboratory analysis of grab water samples detected substantial petroleum-impact from CPT-IA 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 Advanced GeoEnvironmental,Inc