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r <br />' APPENDIX F <br /> Adsorbed Mass-Volume Calculations <br /> MOORE TRUCK LINES <br /> 3400 Newton Road, Stockton, California <br />' Assumptions <br />' Utilizing Figures 11 and 12, the mass distribution of total petroleum hydrocarbon <br /> concentrations on-site can be approximated by five contoured zones, with the inner zone <br /> containing the highest TPH-g concentrations and the outer zone containing the lowest The <br />' volume of the inner zone can be approximated utilizing a half-sphere, the volume of the <br /> other zones were approximated utilizing AutoCAD and the cross-section A-A' <br />' The volume of a half sphere can be calculated by the formula <br />' V, = 1/20/37[ r3), where "r" is the radius of the sphere <br /> The volume of the second zone can be calculated by the formula <br />' V2= A h, where "A" is the area as calculated by AutoCAD (Figure 11) and <br /> "h" is the height of the zone (Figure 12) <br /> • The volume of the other zones can be calculated by the formula <br />' V0= A, h, + A2 li ,where "A" is the area as calculated by AutoCAD (Fig 11) and <br /> "h"is the height of the zone (Fig 12) , and 2 indicate splitting the zone into <br /> two parts to calculate the area more accurately <br />' 1) For the estimated inner zone 10,000 rn contour line r= 3 33 ft <br /> ( g/kg } <br /> 2) For the estimated second zone (1,000 mg/kg contour line) A z 440 ft' and h = 4 8 ft <br />' 3) For the estimated third zone (100 mg/kg contour line) <br /> A, = 316 ft, h, z 7 5 ft, Az = 416 ft and h2 5 5 ft <br /> 4) For the estimated fourth zone (10 mg/kg contour line) <br /> A, = 457 ft, h, = 11 ft, A2 = 552 ft and h2 7 f <br /> 5) For the estimated outer zone (1 0 mg/kg contour line) <br />' A, = 597 ft, h, = 15 ft, Az = 744 ft and h2 8 ft <br /> The average TPH-g concentration in each zone was estimated by adding all soil samples within the <br /> selected area and dividing by the total number of samples or adding the two boundary concentrations <br /> and dividing by two The average zones (reported as milligrams per kilogram, mg/kg) were as <br /> follows 19,900 mg/kg(0 0199), 5,320 mg/kg(0 0053), 550 mg/kg(0 00.055)_, 55 mg/kg(0 00005 5) <br /> and 5 5 mg/kg (0 0000055) <br /> Advanced GeoEnvironmental,Inc <br />