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CAMBRIA <br /> jil� WON <br /> Abbreviations&Notes <br /> TPHg=Total purgeable hydrocarbons as gasoline <br /> MTBE=Methyl tert-butyl ether <br /> Conc =Concentration <br /> ppb=Parts per billion equivalent toµg/L <br /> µglL=Micrograms per liter <br /> L=Liter <br /> gpm=Gallons per minute <br /> gal=Gallon <br /> g=Gram <br /> N5=Not sampled <br /> Mass removed based on the formula volume extracted(gal)x Concentration(}µg/L)x(S/106µg)x(pound/453 6g)x(3 785 Ugal) <br /> When constituents are not detected,the concentration is assumed to be equal to half the detection hunt[in subsequent calculations <br /> Volume removal data based on the formula mass(pounds)x(density)-1(cmO/g)x 453 6(g/pound)x(Ul000 cm)x(galla 785 L) <br /> Density inputs TPHg=0 73&d,benzene=0 88 gluon',MTBE=0 74 glom' <br /> TPHg,benzene and MTBE analyzed by EPA Method 8260B <br /> Approximately 23,578 gallons of extracted groundwater was off hauled to Shell's Martinez Refinery using vacuum trucks between June I 1 and June 25 2004 <br /> I <br /> I <br /> 1 <br /> Page 4 of 4 <br /> 0783 <br />