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08 May 2008 AGE-NC Project No. 98-0465 Page 3 of 6 concentrations at or above the laboratory reporting limits. Five direct push soil borings were advanced on 23, 25, and 27 May 2005 with a van-mounted GeoProbe unit to further assess subsurface lithology and to define the ground water contamination. One additional monitoring well was installed at the site on 09 January 2006 to monitor the possible offsite migration of the dissolved MTBE plume. The well was completed with a 4-inch diameter casing so that it might be used as a ground water extraction well if necessary. One composite soil sample including soil from each of the barrels of auger returns was analyzed for TPH-g, TPH-d, BTEX,MTBE,and the suite of five oxygenated fuel additives by EPA Method 8260 Modified.None of the analytes were detected at concentrations at or above the laboratory reporting limits. To date, MTBE has been the only analyte of concern detected in the ground water samples. By January 2006,the lateral extent of ground water contamination was defined by MW-2 to the north, boring B4 to the east,MW4 to the southeast,boring B-5 to the south, boring B-3 to the west,and boring B-2/MW-5 to the northwest; vertical definition was provided by boring B-1. Analytical results for soil and ground water samples are summarized in Tables 1 and 2. 3.0. SCOPE OF WORK AGE proposes to advance and sample seven soil probe borings at the site to characterize soil vapor intrusion. The scope of work will consist of the following tasks: • Pre-field work activities; • Geoprobe advancement and soil vapor sample collection; • Soil vapor sample analysis; • Review and analysis of soil vapor data; and • Report preparation. 3.1. PERMITTING AND PRE-FIELD WORK ACTIVITIES A site specific health and safety plan will be prepared in accordance with Occupational Safety and Health Guidance Manual for Hazardous Waste Site Activities(National Institute for Occupational Safety and Health Administration, U.S. Coast Guard and U.S. Environmental Protection Agency, 1985). Prior to mobilization, each proposed soil probe boring location will be clearly marked and Advanced GeoEnvironmental,Inc.