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COMB RIA <br /> g <br /> Abbreviations&Notes <br /> TPHg=Total purgeable hydrocarbons as gasoline <br /> MTBE=Methyl tert butyl ether <br /> Cone =Concentration <br /> ppb=Parts per billion equivalent toµgIL <br /> µg1L=Micrograms per Mer <br /> L=liter <br /> Spm=Gallons per minute <br /> gal=Gallon <br /> g=Gram <br /> NS=Not sampled <br /> Mass removed based on the formula volume extracted(gal)x Concentration(µSIL)x(gll(6gg)x(pound/453 69)x(3 785 Ugal) <br /> When constituents are not detected,the concentration is assumed to be equal to half the detection limit in subsequent calculations <br /> Volume removal data based on the formula mass(pounds)x(density)1(cm3lg)x 453 6(g/pound)x(LI1000 cm')x(galla 765 L) <br /> Density inputs TPHg=0 73 glcm},TPHd=0 87 glcros,MTBE=0 74 glcm' <br /> TPHg benzene and MTBE analyzed by EPA Method 8260E <br /> I <br /> 0783 Page 3 of 3 <br />