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i i • <br /> CAMBRIA <br /> Tgble I Groundvaater Extrraction Mass Removal Data,Shell-branded Service Station,2575 Country Club Boulevard,Stockton,California <br /> TPHg Benzene _ _� MTBE <br /> Site Flow Meter Cumulative Flow TPHg Period Cumulative Benzene Period Cumulative MTBE Period Cumulative <br /> Visit Reading Volume Rate Cane Removal Removal Cone Removal Removal Conc Removal Removal Active i <br /> (mnVdd! ) ( al) ( al) ( m) (ppb) (pounds) (pounds) (ppb) (pounds) (pounds) (ppb) (pounds) (pounds) Wells Comments <br /> I <br /> 09/10/03 628 820 1 939 960 164 12 000 497 5732 3 900 1 614 7929 19 000 786 7212 RW 1A <br /> 09123/03 677 030 1988 170 258 17 000 684 5800 2 500 1006 8029 10 000 4 02 7252 RW IA <br /> 10/02/03 709,811 2,020 951 253 7 100 194 5919 1,600 0 438 8073 7 400 202 7273 RW IA <br /> 10/14/03 751 280 2 062 420 240 NS 246 5844 NS 0 554 8128 NS 256 7298 RW 1A System shut down <br /> ,rotal�; lousExf d,ed` 2,062020 TotalPoundAemtived 584 Total Pounds Removed 81.3 TotalPottodsBemaved 730 <br /> TotalGallorksXem6yed 959 Total Gallons Removed 112 Total GallonsRUNVO. 118 <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 toµg/L <br /> µg1L=Nficrograms 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(}tg/L)x(g/1061tg)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]unit in subsequent calculations <br /> Volume removal data based on the formula mass(pounds)x(density) 1(cm3/g)x 453 6(g/pound)x(U1000 cm3)x(gall3 785 L) <br /> Density inputs TPHg=0 73 glcm3 benzene=0 88 glcm3 MTBE=0 74 glem3 <br /> TPHg benzene and MTBE analyzed by EPA Method 8260B <br /> Page 3 of 3 <br /> 0783 <br />