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rr r. rr rr �r■ ■r rt r� rr rr ar rr rr r rr � - r TABLE 2 CUMULATIVE ANALYTICAL RESULTS -GROUNDWATER San Joaquin County Parking Garage, 130 N Hunter Street Stockton California OXYGENATES SAMPLE DATE ETHYL- LOCATION SAMPLED TPH-G BENZENE TOLUENE BENZENE XYLENES MTBE DIPE ETBE TAME TBA 1,2-DCA TPH-D TPH-MO TPH-K G-1 02/02101 160,000 6,100 190 2,600 2,600 ND<50 ND<50 ND<50ND<50 ND<500 NA ND<60 000 ND<1 000 63,000 G-2 02102/01 2,200 68 ND<5 14 25 ND<5 ND<5 ND<5 ND<5 ND<50 NA N0<1,000 ND<100 1,000 G-3 02102101 50,000 1,900 220 6,400 5,700 ND<20 ND<20 ND<20 ND<20 N0<200 NA ND<120000 ND<1000 110,000 MW-1 07/24/02 69,000 660 960 2,700 5,200 ND<5 ND<5 ND<5 ND<5 ND<50 91 ND<50 ND<500 NA 11/25/02 140,000 610 790 1,400 1,000 ND<5 N0<5 ND<5 17 ND<50 NA 2,000 ND<500 NA MW-2 07/24/02 120,000 490 600 4,500 11,000 ND<5 ND<5 N0<5 ND<5 ND<50 15 ND<50 ND<500 NA 11/25/02 160,000 1,400 660 3,400 6,000 ND<5 ND<5 ND<5 14 ND<sa NA ND<50 ND<500 NA MW-3 07124102 170,000 1,400 640 3,300 6,000 ND<5 84 ND<5 ND<5 ND<50 38 ND<50 ND-500 NA 11/25/02 350,000 2,400 1,200 4,900 12,000 ND<5 94 N0<5 ND<5 ND<50 NA ND<50 ND<500 NA I MW-4 07/24/02 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND40 5 ND<0 5 ND<5 ND<0 5 ND<50 ND<500 NA i 1/25102 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 ND<0 5 ND<0 5 ND<C 5 ND<0 5L±iD<5 NA ND<50 ND<500 NA NOTES All results are reported in micrograms per liter(ug/1) which translates to parts per billion(ppb) Total Petroleum Hydrocarbons as Gasoline(TPH G)and Benzene,toluene,ethylbenzene xylenes(BTEX)analyzed by EPA Methods 802018015M or 82606 Oxygenates Methyl teriary butyl ether(MTBE) Dwsopropyl ether(DIPE) Ethyl-t-butyl ether(ETBE) Tert-amyl methyl ether(TAME)and Tert butanol(TBA)analyzed by EPA Method 82606 1 2-Dichloroethane(1 2-DCA)analyzed by EPA Method 82608 TPH-Diesel(TPH-D),TPH-Motor Oil(TPH-MO),and TPH-Kerosene(TPH-K)analyzed by EPA Method 8015M I ND<100=Not Detected at reporting limit of 100 ppb NA =Not analyzed for specified compound