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STA 4•■. ;_ e_ eller Analytical Results of Ground Wa P Sam les - 25 November 2002 PACIFIC CAR WASH 4405 Pacific Avenue, Stockton, California MW-1 MW-2 MW-3 MW-4 MW-5 MW-6 MW-7 MW-8 MW-9 MW-l0A MW-lOB MW-11 MW-12 48 to 53 25 to 45 29h to 30 to 50 25 to 45 25 to 45 20 to 40 20 to 40 20 to 40 23 to 43 50 to 55 25 to 45 25 to 45 49'/2 TPH-g 35,000 100,000 52,000 ND<50 ND<50 96,000 270 ND150 4,000 190 ND<50 ND<50 ND<50 Benzene 6,500 1,500 710 ND<O 5 ND<O 5 700 14 ND<O 5 270 ND<O 5 ND<O 5 ND<O 5 ND<O 5 Toluene EPA 520 5,500 500 ND<O 5 ND<O 5 4,300 ND<O 5 ND<O 5 16 ND<O 5 ND<O 5 ND<O 5 ND<O 5 8015M/ thylbenzene 8020 680 4,100 1 3,000 ND<O 5 ND<O 5 3,000 ND<O 5 ND<O 5 260 ND<O 5 ND<O 5 ND<O 5 ND<O 5 Xylene 3,000 23,000 14,000 ND<O 5 ND<O 5 24,000 ND<O 5 ND<O 5 110 ND<O 5 ND<O 5 ND<O 5 ND<O 5 MTBE 350 ND<100 ND<50 ND<O 5 ND<O 5 1,100 17 ND<O 5 42 500 62 is ND<O 5 MTBE 240 37 11 ND<O 5 ND<O 5 1,500 15 ND<O 5 41 470 66 19 ND<O 5 DIPE ND<10 ND<25 ND<10 ND<O 5 ND<O 5 ND<25 ND<O 5 ND<O 5 ND<2 5 ND<5 ND<1 ND<O 5 ND<O 5 TAME ND<10 ND<25 ND<10 ND<O 5 ND<O 5 ND<25 ND<O 5 ND<0 5 ND<2 5 ND<5 ND<1 ND<O 5 ND<O 5 ETBE 8260M ND<10 ND<25 ND<10 ND<O 5 ND<O 5 ND<25 ND<O 5 ND<O 5 ND<2 5 ND<5 ND<l ND<O 5 ND<O 5 TBA ND<400 ND<1000 ND<400 ND<20 ND<20 ND<1000 ND<20 ND<20 ND<100 ND<200 ND<40 ND<20 ND<20 EDB ND<10 ND<25 ND<10 ND<O 5 ND<O 5 ND<25 ND<0 5 ND<O 5 ND<2 5 ND<5 N ND<O 5 ND<O 5 1,2-DCA 144 ND<25 ND<10 ND<O 5 1 ND<O 5 ND<25 I ND<O 5 ND<O 5 ND<2 5 ND<5 2 =L=0 5 N13<0 5 Notes All samples reported in micrograms per liter(gg/l),TPH-g total petroleum hydrocarbons quantified as gasoline MTBE methyl ternary butyl ether,DIPE di-isopropyl ether,TAME tert-amyl methyl ether,ETBE ethyl tert-butyl ether,TBA tert-butanol,1,2-DCA 1,2-dichloroethane,EDB ethylene dibromide ND not detected,NA not analyzed < indicates constituents were not detected at concentration greater than the reporting limit shown i unmodified or weakly modified gasoline is significant t