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CAMBRIA <br /> Table 2 Mass Removal Data- Shell-branded Service Station, 2575 Country Club Boulevard,Stockton,California <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 1D (gal) (gal) Date (ppb) (pounds) (pounds) (ppb) (pounds) (pounds) (ppb) (pounds) (pounds) <br /> 12/07/00 RW-IA 5,000 337,725 10/19/00 38 200 1 59377 287 10950 9 850 041096 32 17849 87 100 363397 431 56237 <br /> 12/15/00 RW-IA 5 000 342,725 10/19/00 38,200 1 59377 288 70327 9 850 041096 3258945 87 100 363397 435 19634 <br /> 12/22/00 Poly Tank 5 000 347 725 10/19/00 38,200 1 59377 290 29704 9,850 041096 33 00041 87,100 363397 438 83030 <br /> 12/28/00 Poly Tank 4 800 352,525 10/19/00 38 200 1 53002 291 82706 9 850 039452 3339493 87,100 348861 442 31891 <br /> 12/30/00 Poly Tank 4 800 357 325 10/19/00 38 200 1 53002 293 35708 9,850 039452 3378945 87,100 348861 445 80752 <br /> 01/02/01 Poly Tank 4 800 362,125 10/19/00 38,200 1 53002 294 88710 9 850 039452 34 18397 87 100 348861 449 29613 <br /> 01/05/01 Poly Tank 4 800 366 925 10/19/00 38 200 1 53002 296 41712 9 850 039452 3457849 87 100 348861 452 78474 <br /> 01/08/01 Poly Tank 1 300 368 225 10/19/00 38 200 041438 296 83151 9 850 0 10685 3468534 87,100 094483 453 72957 <br /> 01/11/01 Poly Tank 4 619 372 844 10/19/00 38 200 147233 298 30383 9 850 037964 3506498 87 100 335706 457 08663 <br /> Total Gallons Extracted 372,844 'total Pounds Removed, 29830383 31.064M o7.#f* <br /> Total Gallons Removed 4890227 4,81342 <br /> Abbreviations&Notes <br /> TPPH=Total purgeable hydrocarbons as gasoline <br /> MTBE=Methyl tert-butyl ether <br /> gg1L=Micrograms per liter <br /> ppb=Parts per billion equivalent to pglL <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(µg/L)x(g/106-g)x(pound/453 6g)x(3 785 L1gal) <br /> Volume removal data based on the formula density(in gmslcc)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 a Martinez refinery <br /> 7/14100 No vacuum truck operation for this day <br /> 0781 3 of 3 <br />