Laserfiche WebLink
y CTABLE D-3 Page 1 of 1 <br /> ESTIMATED 1,2-DCA MASS IN GROUNDWATER(NOVEMBER 4,2011) <br /> INDEPENDENT SHELL-BRANDED SERVICE STATION <br /> 4315 WATERLOO ROAD <br /> STOCKTON,CALIFORNIA <br /> i <br /> Impacted GW Impacted GW Aquifer Volume Estimated Impacted Representative 1,2-DCA. Total Dissolved Total Dissolved <br /> Thickness Area Aquifer GW Volume Concentration 1,2-DCA Mass 1,2-DCA Volume. <br /> (ft) (sq-ft) (cu-ft) Porosity (gallons) (µg/1) (Ib) (gallons) <br /> 15.00 3,688 55,320 0.4 165,517 2.8 0.00 0.0004 <br /> 15.00 1,804 27,060 0.4 80,964 27.5 0.02 0.0018 <br /> 15.00 288 4,320 0.4 12,925 120.0 0.01 0.0012 <br /> Total Estimated Residual 1,2-DCA: 0.04 0.0034 <br /> Notes: <br /> Aquifer Volume=Impacted aquifer thickness x impacted aquifer area[excludes aquifer volume of greater impact] <br /> Impacted GW Volume=Aquifer volume(cu-ft)x est.porosity(%)x 7.48(gals/cu-ft) <br /> Total Dissolved 1,2-DCA Mass=GW volume(gals)x 3.785(1/gal)x Concentration(ug/1)x 2.205 lb/kg/ 1,000,000,000(ug/kg) <br /> Total Dissolved 1,2-DCA Volume=Mass(lb)/10.45(lbs/gal) <br /> Approximate density of 1,2-DCA=10.45 lb/gal <br /> Abbreviations: Soil Type: Porosity <br /> 1,2-DCA= 1,2-Dichloroethane Gravel 25-40 <br /> GW=Groundwater Sand 25-50 <br /> ft=feet Silt 35-50 <br /> sq-ft=square feet Clay 40-70 <br /> cu-ft=cubic feet <br /> kg=kilograms <br /> lb=pound <br /> µg/1=micrograms per liter <br /> lb/gal=pounds per gallon From:Groundwater;Freeze&Cherry,1979,Prentice-Hall,Inc.,pg.37. (based on Davis,1969) <br /> CRA 241,359 9) <br /> d <br /> 1 <br />