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. 12 July 2001 AGE-NC Project No 98-0432 Page 3 of 10 • April 2000-AGE conducted a sensitive receptor survey to locate potential vertical conduits within a 2,000-foot radius of the site The survey located an agricultural well 1,750 feet southeast of the site at the Van Ryan Nut processing facility and two adjacent residences One domestic water well was observed 1,800 southwest of the site on Industrial Park Drive Additionally, one colnmercial/agncultural well was located down gradient approximately 2,200 feet northwest at a pickling processor Results of the investigation were reported in Well Survey, dated 20 April 2000,prepared by AGE 11 December 2000- Ground water monitoring wells, MW-5 and MW-6 were Installed on- site to assess the lateral extent of MTBE-impacted soil and ground water - 20 December 2000 - Ground water extraction well EW-1 was installed at the site for performance of a ground water pumping test Soil borings EW-1 was advanced vertically to depths of 30 feet bsg Boring EW-1 was single-completed as a 6-inch diameter ground water extraction well with screen intervals between 15 and 30 feet bsg Soil and ground water samples were not collected during this investigation Results of the December 2000 investigation were reported in Additional Site Assessment Report-December 2000 dated 21 March 2001 prepared by AGE - 29 March 2001 - Ground water monitoring and sampling were performed at the wells on site Ground water levels were measured between 13 and 14 feet below the tops of the well casings, ground water flow direction at the site was inferred to be flowing towards the northwest at an approximate gradient of 0 003 Laboratory analysis of ground water samples detected TPH-d at the site at concentrations as high as 190 4g11, BTEX compounds were not detected, MTBE was detected at concentrations as high as 11,000µg/l Results of the march 2001 investigation were reported in Quarterly Report-First Quarter 2001, dated 20 June 2001,prepared by AGE 23 May 2001 - A ground water aquifer pump test was performed at the site to assess the general ground water aquifer characteristics and to assess aquifer response to ground water extraction utilizing wells EW-1, MW-1 through MW-6 at a constant pumping rate of 5 gallons per minute, purged ground water was contamenzed on-site in a 6,500-gallon poly tank(Baker tank) From data collected during the pumping test, a transmnssivity value was calculated at 700 ft�/day(5,223 gallons per day/ft), a storativity value calculated at 0 047, a hydraulic conductivity value of 348 ft/day, or 0 123 cm/s and an observed radius of influence was at 95 feet Results of the May 2001 investigation were reported in Ground Water Aquifer Pumping Test Report-Second Quarter 2001 dated 18 June 2001, prepared by , AGE i Advanced CeoEnvironmentai,Inc