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ESTIMATION OF PETROLEUM HYDROCARBONS <br /> EXISTING IN SOIL AFTER REMEDIATION <br />. Beacon Station No 695 <br /> 900 South Cherokee Lane <br /> Lodi, California <br /> Assu i tip 'ons: <br /> 1 Inferred lateral and vertical extent of impacted soil is illustrated on Figures 18, 19, 21, <br /> 22, 23, and 24 <br /> 2 Average weight of per cubic foot of soil = 110 lbs/ft' <br /> 3 Impacted soil was divided into 6 layers <br /> Layers Vertical Interval (ft) <br /> B 10-19 <br /> C 20-29 <br /> D 30-39 <br /> E 40-49 <br /> F 50-59 <br /> G 60-69 <br /> 4 For borings with multiple soil samples in an interval, the highest concentration was <br /> utilized for calculation purposes <br /> 5 Each layer is divided into 2-3 concentric volumes of average concentrations The <br /> inferred extent of the concentric volumes are illustrated on Figure 26 <br /> 6 Estimated impacted soil is based on samples collected between March 20 through 26, <br /> 1996 <br /> 7 Pounds of petroleum hydrocarbons = (volume)(average weight per cubic <br /> foot)(ppm/1Xi06) <br /> I. Estimation of TPH as gasoline existing in soil after remediation <br /> (A) Layer A (0-9 feet) <br /> Note Soil samples were not collected from this interval <br /> MSOo2 915 <br />