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1 <br /> • 0 <br /> 25 January 1999 <br /> . AGE-NC Protect No 97-0301 <br /> Page 3 of d <br /> Review of historical depth to ground water maps (FCD&WCD) dating back to 1971 suggests that <br /> ground water depth near the site has fluctuated between 40 and 50 feet bsg <br /> 3.0. SCOPE OF WORK <br /> Based upon analytical results of soil samples collected upon removal of the three USTs in September <br /> of 1998, the PHS-EHD is requiring investigation to determine the lateral and vertical extent of <br /> hydrocarbon-impacted soil and ground water Initially, AGE proposes to drill and sample five soil <br /> probe bonngs at the site However, additional probe borings may be required to adequately define <br /> the lateral and vertical extent of hydrocarbon-impacted soil and/or ground water <br /> The investigation will consist of the following tasks <br /> • Permitting and pre-field work activities, <br /> • Soil/ground water sample collection and analysis, <br /> • Report preparation <br /> Each of these tasks are discussed below in detail <br /> 3 1 PERMITTING AND PRE-FIELD WORK ACTIVITIES <br /> Applicable site assessment permits will be obtained from the PHS-EHD As required by PHS-EHD <br /> permitting, a health and safety plan will be prepared in accordance with Occupational Safety and <br /> Health Guidance Manual for Ha,ardous Waste Site Activities (National Institute for Occupational <br /> Safety and Health Administration, U S Coast Guard and U S Environmental Protection Agency, <br /> 1985) Prior to digging activities,each proposed digging location will be clearly marked and an utility <br /> clearance obtained through Underground Service Alert <br /> 32 SOIL/GROUND WATER SAMPLE COLLECTION AND ANALYSIS <br /> Initially,AGE proposes to advance five probe borings at the site to evaluate the lateral and vertical <br /> extent of petroleum hydrocarbon impaction Additional probe borings may be required,to completely <br /> delineate any impacted soil and/or ground water encountered Proposed soil boring locations are <br /> illustrated in Figure 2 <br /> Adranced GeoEm Lronmental,Inc <br />