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<br /> TAFE 2 •
<br /> CUMULATIVE ANALYTICAL RESULTS -GROUNDWATER
<br /> San Joaquin County Motor Pool, 1810 East Hazelton Avenue, Stockton, California
<br /> OXYGENATES
<br /> DATE ETHYL.
<br /> SAMPLE LOCATION SAMPLED TPH-D TPH-G BENZENE TOLUENE BENZENE XYLENES MTBE DIPE ETBE TAME TBA I 1,2-DCA
<br /> MW-1 04/14/99 240,000 244,000 47,600 48,000 4,280 21,750 46,500 ND<100 ND<100 ND<100 ND<500 NA
<br /> 12/18/00 ND<1000 220,000 51,000 37,000 ND<5000 20,900 75,000 NA NA NA NA NA
<br /> 12/06/01 FP FREE PRODUCT 0 33 FEET THICK FP FP FP FP FP FP
<br /> 03/29/02 NA 270,000 44,000 31,000 6,500 33,000 34,000 ND<200 N0<200 ND-200 ND<2,000 ND<200
<br /> 05/06/02 NA 230,000 49,000 48,000 4,700 25,000 83,000 ND<50 ND<50 N0<50 ND<500 ND<50
<br /> 081122102 FP FREE PRODUCT 0 41 FEET THICK FP FP FP FP FP FP
<br /> 11/26/02 FP FREE PRODUCT 0 22 FEET THICK FP FP FP FP FP FP
<br /> 03/07/03 FP FREE PRODUCT 0 45 FEET THICK FP FP FP FP FP FP
<br /> MW-2 04/14/99 86,000 90,100 28,900 5,060 1,890 11,750 644 N0<10 ND<10 N13<10 ND<50 NA
<br /> 12/18/00 N0<50 57,000 30,000 ND<2 500 ND<2,500 4,000 ND<2,500 NA NA NA NA NA
<br /> 12/06/01 NA 110,000 33,000 1,200 2,100 9,800 6,700 ND<100 ND<100 ND<100 ND<1000 ND<100
<br /> 03/29/02 NA 82,000 27,000 600 1,400 6,600 9,900 ND<1D0 N0<100 ND<100 ND<1000 ND<100
<br /> 05/06102 NA 90,000 35,000 650 2,400 9,600 5,500 ND<50 ND<50 ND<50 ND<500 ND<50
<br /> 08/22102 NA 100,000 36,000 620 31100 11,300 32,000 N0<50 ND<50 ND<50 5,300 100
<br /> 11/28/02 NA 94,000 40,000 320 2,000 51900 25,000 ND<50 ND<50 ND<50 ND<500 1,400
<br /> 03/07/03 NA 42,000 14,000 200 11000 1,800 15,000 ND<500 ND<500 ND<500 ND<5000 NA
<br /> MW-3 12/06/01 NA 3,000 310 400 61 360 21 ND<2 ND<2 ND<2 ND<20 ND<2
<br /> 03/29/02 NA 68 15 16 ND<0 5 22 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 N0<0 5
<br /> i
<br /> 05/06/02 NA ND<50 05 ND<0 5 ND<0 5 ND<1 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 ND<0 5
<br /> 08/22/02 NA ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 ND<0 5
<br /> I
<br /> 11/26/02 NA ND<5D ND<0 5 ND<0 5 ND<0 5 ND<1 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 ND<D 5
<br /> 03/07/03 NA 55 ND<0 5 ND<0 5 ND<0 5 ND<1 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 NA
<br /> CITY WELL 12/28/01 NA ND<50 ND-10 5 ND<0 5 ND<0 5 ND<0 5i ND<0 5 ND<0 5 ND<0 5 ND-10 5 ND<5 ND<0 5
<br /> NOTES All results are reported in micrograms per Iter(ug/1)which translates to parts per billion(ppb)
<br /> Total Petroleum Hydrocarbons as Diesel(TPH-D)analyzed by EPA Method 8015M
<br /> Total Petroleum Hydrocarbons as Gasoline(TPH-G),benzene toluene,ethylbenzene xylenes by EPA Method 82608 or 8020/8015M
<br /> Methyl-t-butyl ether(MTBE), Di-isopropyl ether(DIPE), Ethyl-t-butyl ether(ETBE),Tert-amyl methyl ether(TAME)and Tert-Butanol(TBA)by EPA 8260B
<br /> 1,2-Dichloroethane(1,2-DCA)and 1,2-Dibromoethane(EDB)analyzed by EPA Method 8260B
<br /> ND<0 5=Not Detected at reporting limit of 0 5 ppb
<br /> FP=Free Product,Well Not Sampled
<br /> NA =Not analyzed for specified compound
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