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i ! • <br /> CAMBRIA <br /> Table 1 Mass Removal Data-Shell-branded Service Station,3725 Tracy Boulevard,Tracy,California <br /> i <br /> Cumulative TPPH Benzene MTBE <br /> Volume Volume TPPH TPPH Removed Benzene Benzene Removed MTBE MTBE Removed <br /> Date Well Pumped Pumped Sample Concentration Removed To Date Concentration Removed To Date Concentration Removed To Date <br /> Purged ID (gal) (gal) Date WIL) (pounds) (pounds) (µg/L) _(Pounds) (pounds) (µg/1) (pounds) _pounds) <br /> *=Pounds removed based on most recent groundwater monitoring results <br /> Mass removed based on the formula volume extracted(gal)x Concentration(µg/ )x(00'")x(pound/453 6g)x(3 785 Llgal) <br /> Volume removal data based on the formula density(in gms/cc)x 9 339(ccxlbslgmsxgals) <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 Martinez Refining Company <br /> 0813 Page 2 of 2 <br />