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I <br />' Table 5 <br /> Calculation of Residual Dissolved-Phase TPHg Mass <br />' 1817 South Fresno Ave., Stockton, CA <br /> TPHg mass (lbs) = Vol x (ft3)* TPHg con x (mg/L)* 28 31 (L/ft3) *0 0000022 (lbs/mg) <br />' where, Vol x(ft3)=Area x (ft2)*Thickness x(ft)* porosity(unitless) <br /> TPHg con x(mg/L) =Average TPHg concentration for specific volume <br />' (see below) <br /> Volume calculations <br />' Volume x Area x(ft2) h (ft) porosity Vol x(ft3) <br /> Vol 1 (TPHg 0 1 to 1 mgIL) 13,195 15 035 69,274 <br /> Vol 2 (TPHg 1 to 10 mg/L) 10,142 15 035 53,246 <br /> Vol 1 (TPHg X10 mg/L) 5,320 15 035 27,930 <br />' Volume x Vol x TPHg con x Conversion Conversion TPHg mass <br /> ft3) mg/L) LIft3 (Ibslm ) (lb) <br /> Vol 1 (TPHg 0 1 to 1 mg/L) 69,274 032 2831 00000022 14 <br /> Vol 2 (TPHg 1 to 10 mg/L) 53,246 32 2831 00000022 106 <br /> Vol 1 (TPHg >10 mg/L) 27,930 12 2831 00000022 209 <br />' Dissolved TPHg (lbs) = 329 <br /> Dissolved TPHg (gals) = 54 <br />' 150,449 1125435 615 <br /> 1 <br />