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Table 9: Contaminant Mass Estimate Calculations(MtBE) <br /> Valley Wholesale Druct_CompanY <br /> 1401 W Freemont <br /> Stockton,California <br /> Project No 989 2 <br /> matrix area volume Pounds Kilograms cont. load cont cont <br /> Layer zone type depth-ft zone thickness ft2 ft3 of soil of soil mgIkq mg K <br /> 1 Core silty clay 5 to 20 Vadose 15 4,000 60,000 5,700,000 2,585,520 0 011 2 84E+04 0 028 <br /> 2 Ring silty clay 5 to 20 15 33,000 495,000 47,025,000 21,330,540 0 004 8 53E+04 0 085 <br /> matrix area volume vol of H2O vol H2O cont load cont. load cont <br /> zone type de th-ft zone thickness ft2 ft3 ft3 liters mg/L kW L k <br /> 1 Core water 12 to 22 water table 10 5,000 50,000 17,500 495,544 0 045 4 50E-08 0 022 <br /> 2 Ring water 12 to 22 10 20,000 200,000 84,000 2,378,611 0 025 2 5012-08 0 059 <br /> 3 Ring water 12 to 22 10 15,000 150,000 63,000 1,783,958 0 008 8 OOE-09 0 014 <br /> Total Contaminant Kg= 0.210 <br /> lbs= 0 463 <br /> gals= 0 075 <br /> Sort Assumptions <br /> Used the area measured by Surfer generated contours <br /> Used average concentrations of MtBE in each zone to estimate mass <br /> Used a 15-foot thick zone of Impacted soli to maximize mass estimate <br /> Groundwater Assumptions <br /> Used the area measured by Surfer generated contours for conservative calculations <br /> Used the average concentrations generated by Surfer for each area(0-20 ugtL,20-40 ug/L and 40-75 uglL) <br /> *dogWrohidaft to/26/2W4 <br />