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6le'. <br /> i <br /> Estimate of Residual Mass-MTRE in Groundwater <br /> Former BP Station No.11193 <br /> 3202 West Hammer Lane,Stockton,CA <br /> MTBE <br /> Subarea 1 <br /> Assumption: 1/2 circle with 30 foot radius in vicinity of MW-9 by 18 feet deep <br /> area= 1414 sq ft Note: pi*r^2/2(for half circle) <br /> volume= 25446 cu ft soil+water Note: Multiplied above number by 18 feet <br /> Lkquid vol= 7634 Cu ft water Note: Multiplied above number by porosity(30%) <br /> mass of water= 476352 lbs of water Note: Multiplied above by 62.4 lbs/cu ft for water <br /> concentration of MTBE= 6.3 ug/L <br /> mass of MTBE= OA013 lbs Note: Multiplied mass of water by concentration(ppb)/1000000000 <br /> Volume, if it were water— 0.05 fluid ounces <br /> Specific Gravity of MTBE= 0.74 Note: Published value <br /> Volume of MTBE= 0.06 Fluid ounces Note:water volume/specific gravity <br /> teaspoons= 0.39 tsp Note.6 tsp to 1 fluid ounce <br /> Subarea 2 <br /> Assumption: 38.5 foot radius circle in vicinity of MW-11 by 18 feet deep <br /> area = 4656 sq ft Note: pi r r^2 <br /> volume= 83817 cu ft soil+water Note: Multiplied above number by 18 feet <br /> Liquid vol 25145 cu ft water Note: Multiplied above number by porosity(30%) <br /> mass of water= 1569050 Ibs of water Note: Multiplied above by 62".4 lbs/cu ft for water <br /> .concentration of MTBE- 1.5 ug/L <br /> mass of MTBE= 0.002 lbs Note: Multiplied mass of water by concentration(ppb)/1000000000 <br /> - Volume,if it were water— n.04 fluid ounces <br /> Specific Gravity of MTBE= 0.74 Note: Published value <br /> Volume of MTBE= 0.05 fluid ounces Note: water volume/specific gravity <br /> teaspoons= 0.31 tsp Note 6 tsp to 1 fluid ounce <br /> Subarea 3 <br /> Assumption: 2,400 square foot area in vicinity of MW-4 by 23 feet deep <br /> area= 2400 sq ft <br /> volume= 55200 cu ft soil+water .Note: Multiplied above number by 23 feet <br /> Liquid vol= 16560 Cu ft Water Note: Multiplied above number by porosity(30%) <br /> mass of water= 1033344 lbs.of'water Note:Multiplied above by 62.4 Ibs/cu ft for water <br /> concentration of MTBE= 4.7 ug/1- <br /> mass <br /> g/Lmass of MTBE= 0.005 Ibs Note: Multiplied mass of water by concentration(ppb)/1000000000 <br /> Volume,if it were water= 0.08 fluid ounces <br /> Specific Gravity of MTBE= 0.74 Note: Published value <br /> Volume of MTBE= 0.11 fluid ounces Note:water volume/specific gravity <br /> teaspoons= 0.63 tsp Note 6 tsp to 1 fluid ounce <br /> Total Mass of MTBE(lbs) <br /> Subarea 1. 0.003 <br /> Subarea 2 0.002 <br /> Subarea 3 0.005 <br /> f <br />