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CAMBRIA <br /> TPHg Benzene MTBE <br /> Site Flow Meter Cumulative Flow TPI Period Cumulative Benzene Period Cumulative MTBE Period Cumulative <br /> Visit Reading Volume Rate Conc Removal Removal Conc Removal Removal Conc Removal Removal Active <br /> (mm/dd/ ) (gal) ( al) ( m) (ppb) (pounds) (pounds) (ppb) (pounds) (pounds) (ppb) (pounds) (pounds) Wells Comments <br /> 10/07/02 953,205 953,185 136 23,000 489 3937 3,300 0 701 5743 36,000 7 65 5522 RW 1A <br /> 10/22/02 1,013,230 1,013,210 278 33,000 16.53 410.3 3,500 1753 5918 28,000 1402 5662 RW 1A <br /> 11/07112 1,051,409 1,051,389 166 17,000 542 4157 2,800 0 892 6007 39,000 1242 578 6 RW 1A <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 to ltg/L <br /> pg/L=Micrograms per liter <br /> L=Liter <br /> gpm=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(lig(L)x(g/106pg)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 bruit in subsequent calculations <br /> Volume removal data based on the formula mass(pounds)x(density)-1(crI x 453 6(g/pound)x(01000 cm)x(galla 785 L) <br /> Density inputs TPHg=0 73 g1cm3 TPHd=0 87 g/cm3 MTBE=0 74 g/cmi <br /> TPHg benzene and MTBE analyzed bX EPA Method 8260E <br /> f <br /> Page 2 of 2 <br /> 0783 <br />