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29 November 2001 AGE-NC Project No. 01-0887 Page 3 of 6 The map Lines of Equal Elevation of Groundwater, Fall 1999 (FCD&WCD) depicts the regional ground water flow direction towards the northeast. 3.0. SCOPE OF WORK Based upon the analytical results of soil samples collected during removal of the USTs, the PHS- EHD has required further investigation to determine the lateral and vertical extent of hydrocarbon- impacted soil and to assess for petroleum hydrocarbons in impacted ground water. Initially, AGE proposes to advance three soil probe borings at the site to collect soil and `grab' ground water samples for analysis. However, additional probe borings may be required to adequately define the lateral and vertical extent of hydrocarbon-impacted soil and ground water. The investigation will consist of the following tasks: • Permitting and pre-field work activities; • Soil sample collection and analysis; • Ground water collection and analysis; • Report preparation. Each of these tasks are discussed below in detail. 3.1. PERMITTING AND PRE-FIELD WORK ACTIVITIES Applicable site assessment permits will be obtained from the PHS-EHD.As required by PHS-EHD permitting, 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 initiating field work, each proposed digging location will be clearly marked and a utility clearance obtained through Underground Service Alert. 3.2. SOIL SAMPLE COLLECTION AND ANALYSIS AGE proposes to initially advance three soil probe borings: one soil boring will be advanced in the former UST pit; and two soil borings will be advanced near piping sample locations LS_ #3, LS #4 and LS #5. Proposed probe boring locations are illustrated in Figures 3 and 4. Advanced GeoEnvironmen#ai,Inc.