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I <br /> 1 <br />' taken from 30 '-30.5 ' dad not have any odor or visable staining, <br /> laboratory results revealed small amounts of BTEX. The soil sample <br /> from 35-36.5 feet tested ND. <br /> IAt the completion of the drilling operations, all holes were <br /> properly grouted and witnessed by representatives of the County EHD. <br /> The properly preserved and cooled samples were delivered to FGL <br /> Ilaboratory under proper chain-of-custody; refer to Exhibit G. <br /> RESULTS OF LABORATORY ANALYSIS OF SOIL SAMPLES: As shown in Exhibits � <br /> A thru F, the soil samples obtained from boreholes NBH #1 ,27& 3, and <br /> I HBH #1 & 3 were all below detection limits. However , borehole HBH <br /> #2 revealed a manor amount of Benzene from the sample at 25 ' , and <br /> minor amounts of BTEX from the soil sample at 30' . <br /> IUsing Table 2-4, (Environmental Fate Worksheets, ) from the LUFT <br /> manual , only Benzene exceeds the allowable limns for leaving the <br /> Icontaminants an place. <br /> CONCLUSIONS: <br /> 1 . The vertical & horizontal limits of the plume have been defined <br /> to the northwest, north , east , and southeast, and appears to have a <br /> configuration as shown on Plate II . <br /> 2. Because contamination was found in HBH #2, the limits of the <br /> plume have not yet been delineated to the south on the Hammertown <br /> property. <br /> 3. The amounts of contaminants are very low, & only Benzene exceeds <br /> I the LUFT manuals criteria for leaving an place. The levels of BTEX <br /> found at 30 feet were higher than those at 25 feet, indicating that <br /> the plume has migrated both vertically as well as horizontally. <br /> Therefore, in an attempt to determine the limits of contamination to <br /> the south, at as proposed to place three (3) additional borings to <br /> approximately 40 as shown on Plate 11. A program to perform that <br /> Iwork follows. <br /> PROPOSED WORKPLAN <br /> 1. Move in Spectrum Exploration portable drilling rag equipped with <br /> •3 1/4" ID, (6" OD, ) flights & 18" split-spoon sampler. <br /> 2. Drill three (3) 6" auger holes at the approximate locations <br /> shown on Plate II . Auger holes to be drilled to approximately 40 <br /> feet bgl . <br />' 2 <br /> I <br />