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21 March 2003 AGE-NC Project No. 95-0114 Page 2 of 11 and ground water. A total of 22 ground water monitoring events have occurred at the site. The following is a summary of milestone events at the site. • Ground water monitoring wells MW-1, MW-2 and MW-3 were installed at the site in October 1993.During well development a surge block was lodged within well MW-3;MW3 had consistently failed to produce sufficient ground water to meet the pre-sampling purge requirements. Subsequently MW-3 was over drilled on 07 December 1995 and grouted to surface grade with portland cement. • Three additional ground water monitoring wells(MW-3R,MW-4 and MW-5)were installed in December 1995. Petroleum hydrocarbons were not detected in soil samples collected during the installation of wells MW-4 or MW-5, however, hydrocarbon-impacted ground water was detected in samples collected from MW-3R. Results of installation procedures were included in the Quarterly Report-December 1995, prepared by AGE. • In January 2000, two soil borings were advanced at the site and two ground water wells (MW-6 and MW-7)were installed. The most intense TPH-ss-impacted ground water was detected within the former UST area. • In April 2001,extraction well EW-1 and monitoring wells MW-8,MW-9 and MW-10 were installed. • In August 2001 a ground water extraction test was conducted at the site.Ground water draw- down of at least 18 feet was observed in extraction well EW-1 following 720 minutes of continuous pumping(5 GPM); ground water draw-down was observed locally at 0.37 feet to 0.1 feet. The data indicated the following site conditions: transmissivity was calculated at 4,353 gallons per day/ft and a storativity value was calculated at 0.18. Based on a transmissivity value of 583 ft2/day and an extraction well-screen thickness equal to 25 ft (screen interval at EW-1), a hydraulic conductivity value was calculated at 0.061 cm/s; the hydraulic conductivity is consistent with a screened interval located within a silt or a silty to fine sand. • On 14, 15, 26 and 27 November 2002, seven paired soil borings (CPT-I through CPT-7) were advanced on and adjacent to the site, utilizing CPT technology, to refine subsurface lithologic and hydrostratigraphic models and collect grab ground water samples from selected depths. AGE identified a vadose zone extending from surface grade to approximately 25 feet bsg and six hydrologic units. Three hydrologic units(HUI,HU3 and HU5)were identified as clay layers of low dynamic pore pressures. Three units(HU2,HU4 and HU6) were identified as predominantly zones of interbedded clayey silt, silt and stiff fine-grained sediment, with occasional, laterally discontinuous sand lenses;pore pressures within these intervals vary from medium low to high. • Soil and ground water on the site have been impacted with petroleum hydrocarbons as stoddard solvents and BTEX.Additionally,tetrachloroethene(PCE),cis 1,2-dichloroethene Advanced GeoEnvironmental,Inc.