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Groundwater <br /> 1 .0 Average Concentrations <br /> Anal Contou Interval Avera e-Concentration a /L Comments/EIlanation <br /> TP <br /> H >>-50 16,513.33 IThird quarter 2008 data associated with MW1 , MW3, and VW1 . <br /> Total 16,513.33 <br /> 2.0 Volumetric Estimates <br /> Anal a Contour Interval Formula Volume ft Comments/Ez tanatlon - <br /> TPH >_50 (4/3*Tr*rl *r2*t)/2 51 ,616.32 Tr = 3. 14159, r, = 46.5, r2 = 26.5, r3 = 20 <br /> Total 519616.32 <br /> 3.0 Mass Calculations <br /> Estimated Mass = Volume (ft') * Conversion (Uft') * Average Concentration (ug/L)) * Conversion (lbs/ug) * Porosity (unitless) <br /> Anal a Contour Interval ft' 28.31 Avera a Concentration u L 2.206e90"e [ !u Poros91Y I Mass ibs <br /> TPH ?50 51 ,616. 32 1 x 1 28 .31 1XI 16,513.33 x1 2.205E-09 xj 0.20 1 = 1 10.641 <br /> Total 10.641 <br /> Notes <br /> NA denotes not applicable <br /> rj , r2 denotes radius in feet <br /> r3 denotes thickness of water column during 2008 Q3 event in feet using data associated with MW3. <br /> It' denotes cubic feet <br /> L denotes liters <br /> ug denotes micrograms <br /> lbs denotes pounds <br /> 28.31 liters per cubic foot per pound <br /> 2.205e-9 pounds per microgram <br /> Porosity (n) of sand , silt, and clay mixes are listed at a range of 6 to 33 percent. ATC estimates effective porosity to be 20 percent. <br /> Groundwater analytical results provided in Table 2 using fourth quarter 2008 data . <br /> Volumetric estimates based on Figure 5. <br />