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Appendix A - Site Summary rY AGE-NC Project 95-0130 Page 3 of 5 µg/l Based on the observed results, a theoretical radius of influence for SVE at VW-IB 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-1 A and CPT-2A to depths of 105 feet bsg 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 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,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-713 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 i0 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 55 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, BTEX compounds were detected In the same samples 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 (EW1-40), 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 µg/l TPH-g, 3 5 pg/l benzene, 5 7 µg/l toluene and 3 5 dug/l total xylenes Results of the July 2003 Investigation were reported In Monitoring Well Installation Report - July 2003, dated 25 IFebruary 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 Advanced GeoEnvironmental,Inc