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CAMBRIA <br /> Table 2 Mass Removal Data-Shell-branded Service Station, Incident 498996184,2575 Country Club Boulevard,Stockton,California <br /> Cumulative TPPH Benzene MTBE <br /> Volume Volume TPPH* TPPH Removed Benzene* Benzene Removed MTBE* %4TBE Removed <br /> Date Well Pumped Pumped Sample Concentration Removed To Date Concentration Removed To Date Concentration Removed To Date <br /> Pur ed ID a1 al Date b (pounds) (pounds) b (pounds) (pounds) b (pounds) (pounds) <br /> 05/08/00 RW-IA 5 000 163 255 04/18/00 64 400 268688 220 55132 14 400 060079 1394807 139,000 5 79933 241 63456 <br /> 05/22/00 RW-lA 5 000 168 255 04/18/00 64 400 268698 223 23821 14 400 060079 1454886 139,000 5 79933 247 43389 <br /> Vial Gallo-n-S Extratud• 168 53 Tufalll, tfmtds fit moved- 223�23821 14.54884 <br /> Tb�Ill'9 i�1Rjftkved 3659643 <br /> Abbreviations&Notes <br /> i <br /> TPPH=Total purgeable hydrocarbons as gasoline <br /> MTBE=Methyl tert-butyl ether <br /> pg/L=Micrograms per liter <br /> ppb=Paris per billion equivalent to pg1L <br /> L=Liter <br /> gal=Gallon <br /> g=Gram <br /> *=Concentration based on most recent groundwater monitoring results <br /> Mass removed based on the formula volume extracted(gal)x Concentration(pg1L)x(g/I O'pg)x(pound/453 6g)x(3 785 L/gal) <br /> Volume removal data based on the formula density(in gmslcc)x 9 339(ccxlbs/gmsxgals) <br /> TPPH benzene analyzed by EPA Method 8015/8020 <br /> MTBE analyzed by EPA Method 8260 in bold font all other MTBE analyzed by EPA Method 8020 <br /> Groundwater extracted by vacuum trucks provided by ECI Water disposed of at a Martinez refinery <br /> I <br /> I <br />