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ESTIMATION OF PETROLEUM HYDROCARBONS <br /> ' EXISTING IN SOIL AFTER TO REMEDIATION <br /> Beacom Station No. 696 <br /> ' 2448 West Kettleman Lane <br /> Lodi,California <br /> 1 <br /> ' Assumptions: <br /> 1. Inferred lateral and vertical extent of impacted soil is illustrated on Figures 9, 10 and 12. <br /> ' 2. Average weight per cubic foot of soil= I10 lbs/cubic foot. <br /> 3. Impacted soil as indicated on Figures 9,10,and 12. <br /> ' 4. For borings with multiple soil samples in an interval,the highest concentration was utilized for <br /> calculation purposes. <br /> ' Layers Vertical Interval <br /> A 15-25 feet <br /> B 25-35 feet <br /> C 35-45 feet <br /> ' D 45-55 feet <br /> ' 5. Each laver is divided into 1-2 concentric volumes of average concentrations. The <br /> g inferred extent of <br /> the concentric volumes are illustrated on Figure 12. <br /> 6. Estimated impacted area after remediation i,based upon soil samples collected during drilling <br /> S <br /> activities conducted in 1994. <br /> ' 7. Pounds of petroleum hydrocarbons=(volume)(average weight per cubic foot)(ppm/IEE6). <br /> ' S. a: 3.14159 <br />