Laserfiche WebLink
• • <br /> CAMBRIA <br /> Table A3 Estimated MTBE Mass Remaining in Groundwater-Former Texaco Service Station/ARCO,440 West Charter Way,Stockton,California <br /> Contoured Impacted GW Impacted GW Aquifer Volume Estimated Impacted Representative Total Dissolved Tota]Dissolved <br /> Interval Thickness Area Aquifer GW Volume Concentration Mass Volume <br /> (ft) (sq-ft) (cu-ft) Porosity (gallons) (u ) (lb) ( alIons) <br /> Shallow Groundwater <br /> 10 contour 20 17,693 353,860 04 1,058,749 50 044 007 <br /> 1 contour 20 12,899 257,980 04 771,876 5 003 001 <br /> Total Estimated Residual MTBE 047 008 <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 MTBE Mass=GW volume(gals)x 3 785(11gal)x Concentration(ugll)x 2 205 lbtkg 1 1,000,000 000(ug/kg) <br /> Total Dissolved MTBE Volume=Mass(lb)16 17(lbs/gal) <br /> Approxintate density MTBE=6 17 lb/gal. <br /> Abbreviations Porosity <br /> GW=Groundwater Soil Tyne n % <br /> ft=feet Gravel 25-40 <br /> sq-ft=square feet Sand 25-50 <br /> cu ft=cubic feet Silt 35-50 <br /> Ib=pound Clay 40-70 <br /> ug/1=micrograms per liter <br /> From Groundwater,Freeze&Cherry, 1979,Prentice-Hall,Inc,pg 37 (based on Davis, 1969) <br /> 1399 Page 1 of 1 11=004 <br />