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CAMBRIA <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 toµglL <br /> µg/L=Micrograms per liter <br /> L=liter <br /> gpm=Gallons per minute <br /> gal=Gallon <br /> g=Gram <br /> NS=Not sampled <br /> Macs removed based on the formula volume extracted(gal)x Concentration(}tg/L)x(g/106 tg)x(pound/453 6g)x(3 785 Ilgal) <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(cm3/g)x 453 6(g/pound)x(ul OW cm3)x(g&3 785 L) <br /> Density mputs. TPHg=0 73 g/cm3,benzene=0 88 g/em3,MTBE=0 74 g/cm3 <br /> TPHg,benzene and MTBE analyzed by EPA Method 8260B <br /> A roxvnately 23 578 gallons of extracted groundwater was off-hauled to Shell s Martinez Refinery using vacuum trucks between June 11 and June 25 2004 <br /> 1 <br /> Page 4 of 4 <br /> 0783 <br />