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TABLE 4 Analytical Results of Ground Water Samples - 13 June 2003 PACIFIC CAR WASH 4405 Pacific Avenue, Stockton, Callfomia WWI MW-2 MW-3 MW-4 MW-5 MW-6 MW-7 MW-8 MW-9 I MW-104 MW-IOB MW-lI MW-12 48 to 53 25 to 45 129V2 to 49%2 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 TPH-g 27,004 84,000 13,000 ND<50 ND<50 63,000 160 110 1,200 ND<50 250 ND<50 ND<50 Benzene EPA 4,200 440 340 ND<O 5 ND<O 5 400 ND<O 5 ND<O 5 110 ND<O 5 ND<O 5 ND<O 5 ND<O 5 Toluene 8015M1 160 1,400 330 ND<O 5 82 2,300 11 48 ND<O 5 ND<O 5 ND<0 5 ND<O 5 ND<O 5 thylbenzene 8020 320 2,300 1,100 ND<O 5 ND<O 5 2,600 ND<O 5 ND<O 5 91 ND<O 5 ND<O 5 ND<O 5 ND<O 5 Xylene 1,100 8,600 1,300 ND<O 6 2 2 9,300 6 5 48 21 ND<O 6 ND<O 6 ND<O 6 ND<O 6 MTBE 150 33 14 ND<l ND DIPE 77 ND<l ND TAME ND c) ND<l ND<l ND ETBE 8EPA NDcA ND TBA ND<10 ND<1 O ND<10 ND<10 ND<10 ND<10 ND<l0 ND EDB ND<0 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<0 5 1,2-DCA 7-.I 4 2 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<0 5 Notes All samples reported in mu rograms per liter(µg/1) TPH-g total petroleum hydrocarbons quantified as gasoline MTBE methyl tertiary butyl ethei,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 modifiec gasoline is significant I