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.l <br /> APPENDIX E <br /> SOIL MASS BALANCE CALCULATION <br /> Based on the assumption presented in the section entrntled Soil Mass Balance Calculations, <br /> the mass of contaminant can be calculated using the following equation <br /> High C1 + C2 <br /> (Al — A2) 2 (T)(1 -71)(p,j ) Mass contaminant in Soil <br /> Low <br /> Al 3450 Area of outer isoconcentration area ft <br /> A2 Area of inner isoconcentration area ft <br /> C1 20 Concentration of outer isoconcentration mg/kg <br /> C2 Concentration of inner isoconcentration mg/kg <br /> T 85 Plume Thickness ft <br /> = <br /> 035 _ ;Solids J ff\ 1►, <br /> pd 155Particle Density g/cm3 <br /> 1841 lbs of 11 Toluene <br /> Chevron 9-2033 <br /> • <br />