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• <br />• <br />• <br />ATTACHMENT J <br />SOIL MASS BALANCE CALCULATION <br />Based on the assumption presented in the section entitled Soil Mass Balance Calculations, <br />the mass of contaminant can be calculated using the following equation <br />Hl h Cl +C2 <br />(Al — A2) 2 (T)(1— q)(pd) =Mass Contaminant in Soil <br />low2 <br />Where- (Al -A2) —Outer isoconcentration Area minus inner isoconcentratnon area <br />(C1+C2)/2 — Concentration of outer isoconcentration added to the inner <br />isoconcentratnon divided by two <br />(T) — PIume Tluckness <br />(n) -- Porosity <br />(1-n) — Solids <br />(pd) — Particle Density <br />