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as the previous set will provide an insight into the temporal distribution <br />of product at the site. <br />5.2 Task 2 - Soil Sampling and Installation of Additional Monitoring Wells <br />Existing data indicate that fuel components may be present in the <br />soil and groundwater located between wells 9 and 1. This needs to be <br />investigated and additional data collected to estimate the areal extent of <br />hydrocarbons which may be floating on the water table. <br />It is proposed to drill 18 soil borings. These borings are to be <br />drilled in the approximate locations as shown on Drawing 7 so that the <br />lateral and longitudinal distribution of fuel components can be better <br />assessed. Additional borings may be installed if the proposed soil borings <br />show visible fuel product contamination. <br />The boreholes will be drilled with a standard (8-inch diameter) <br />hollow-stem continuous flight auger. The initial soil sample will be <br />collected at a depth interval of 0.5 to 2 feet, followed by samples <br />collected at 2 1/2-foot intervals until the water table is reached. A <br />final sample will be collected 5-foot below the water table. Samples will <br />be over-driven to obtain three 6-inch liner/containers of soil. The <br />contents of one of the continers collected will be examined both visually <br />and 1,41th an HNu photo-ionization detector. If elevated fuel product <br />concentrations are detected in this subsample the second subsample will be <br />sent to a certified laboratory for analysis and the third sample frozen for <br />later analysis. Soil subsamples suspected of containing elevated <br />concentrations of fuel product will be analyzed for BTX and TPH (EPA Method <br />8020) and organic lead. <br />If high concentrations of hydrocarbons are encountered, several <br />boreholes (a maximum of 3) may be converted into monitoring wells. It is <br />5-2 iiir;