Laserfiche WebLink
. Soil - Contaminant Mass Estimated Removed <br /> Assumed residual saturation S (highest), S = 43% <br /> Retention, R= S(porosity n%)(1000 liters/meter) <br /> TPHG R= 0 43 x 0 30 x 0 000997 ppm x 0 3 m3/ft3 x 4590 ft3 x 7 48 gal/ft3 = <br /> 1.32 gallons <br /> Benzene R = 0 43 x 0 30 x 0 000001541 ppb x 0 3 m3/ft3 x 4590 ft3 x 7 48 gal/ft3 = <br /> 0 00204ag llons <br /> MTBE R = 0 43 x 0 30 x 0 000000875 ppb x 0 3 m3/ft3 x 4590 ft3 x 7 48 gal/ft3 = <br /> 0 00116 gallons <br /> Soil Mass Estimated Remaining <br /> TPHG R= 0 43 x 0 30 x 0 001328 ppm x 0 3 m3/ft3 x 2700 ft3 x 7 48 gal/ft3 = <br /> 1 03 gallons <br /> Benzene R = 0 43 x 0 30 x 0 000003134 ppb x 0 3 m3/ft3 x 2700 ft3 x 7 48 gal/ft3 = <br /> 0 000244alg lops <br /> MTBE R = 0 43 x 0 30 x 0 000001324 ppb x 0 3 m3/ft3 x 2700 ft3 x 7 48g al/ft3 = <br /> 0 00103 gallons <br /> Water ca illa Estimated Mass Remaining <br /> Concentration = (soil volume)(porosrty n%)(concentration observed), tank pit water <br /> assumed to represent concentrations remaining in capillary fnnge, averages from above <br /> Water capillary, tank pit data) estimated aquifer vicinity of tank pit area <br /> C =V(n) C observed <br /> C = 2700 ft3 x 0 3 x 7 48 gal/ft3 x 0 000042 ppm= 0 25 gal TPHG. <br /> C = 2700 ft3 x 0 3 x 7 48 gal/ft3 x 0 000003600 ppb= 0 021 gal Benzene. <br /> C = 2700 ft3 x 0 3 x 7 48 gal/ft3 x 0 000000058 ppb = 0 00035 gal MTBE. <br /> Page 6 <br />