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ao Orange County Trigon ProjeclNo 036-00-OIGB Hillsborouzh Landfill Site - J~ 24.2000 3.1 SOIL AND GROUNDWAT>;R SAMPLING 3.1.1 Soil Sampling In February 2000, Trigon collected soil samples from the ground surface to 1.,5 feet below ground surface using a hand auger in the northwestern portion of the property, including the baseball field constructed by Fairview neighborhood residents, Tluee lines of four soil borings each were advanced in this area (see Figure 2).. The soil saniples from each line of four borings were composited for a total of tluee samples (SS-1 tluough SS-3). In addition, one background sample, 55-4, was collected from a single location approximately 500 feet to the west of the property boundary in the Fairview Park, These samples were sent to Paradigm Analytical Laboratories, Inc., a North Carolina-certified laboratory, for analyses. In April 2000, Trigon began work on the geoteclmical evaluation of the property to assess the subsurface conditions at the site, and to delineate the landfill area. The work included advancing 49 geotechnieal borings across the 67-acre property.. Soil samples were collected from eight of the geoteehnical borings in the central portion of the property in areas expected to be the location of past landfilling activities.. Those eight samples were collected from the surface to a depth of nvo feet, and then were composited into one sample (SS-5) for analysis. In addition, two discrete soil samples (SS-6 and SS-7) were collected from the borings advanced for the two monitoring wells (MW-1 and MW-2) subsequently installed in the central portion of the site. All soil samples were collected in accordance with procedures outlined in the GTOUndwater• Sectiorr Guidelines far the Jm+estigation and Remediation of Soil and Groundwater, Volume II, January 2, 1998, TRlGONL'NGINL•L•RlNG CONSUL TAN7S, ING Page 3