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TABLE 4
<br /> Analytical Results of Ground Water Samples
<br /> RAINWATER CAR WASH - 420 West Yosemite Avenue, Stockton, Califomia
<br /> Ground EPA 8015 Modified .EPA 8020 EPA 8260
<br /> Sample Sample Screen
<br /> Water
<br /> 1.D. Date Interval Ethyl
<br /> Depth TPH-g TPH-d Benzene Toluene Xylenes FMTBETMTBE DIPS TAME ETBETBA
<br /> benzene
<br /> 07-11-00 15.49 19200' NA 26 3.2 ND<0.6 120 18,000 20,000 ND<500 580 ND<500 ND<2500
<br /> 10-31-00 16.77 ND<1900 NA 17 9.6 ND<4 33 21,000 22,000 ND<500 1,100 ND<500 ND<2500
<br /> MW-1 01-31-01 15.68 12 to 32 420' ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 10,000 12,000 ND<170 200 ND<170 ND<850
<br /> 04-30-01 16.13 860' NA ND<2 ND<2 ND<0.5 ND<0.5 22,000 24,000 ND<500 ND<500 ND<500 ND<2500
<br /> 12-04-01 18.54 2,000 NA ND<0.5 ND<0.5 ND<0.5 ND<0.5 1,500 1,900 ND<l ND<l ND<1 ND<I
<br /> 07-11-00 16.12 140,000' NA 13,000 28,000 3,200 17,000 9809000 950,000 ND<25000 ND<25000 ND<25000 ND<12500
<br /> 10-31-00 17.44 140,000' NA 18,000 28,000 3,700 20,000 210,000 1809000 ND<5000 ND<5000 ND<5000 ND<25000
<br /> MW-2 01-31-01 16.36 12to32 120,000' 2,7003 9,900 23,000 3,100 16,000 950,000 730,000 ND<10000 ND<10000 ND<10000 ND<50000
<br /> 04-30-01 16.78 110,000' NA 12,000 17,000 2,600 13,000 450,000 530,000 ND<10000 ND<10000 ND<10000 ND<50000
<br /> 07-11-00 15.20 1,400' NA 280 6.7 16 110 18,000 21,000 ND<500 ND<500 ND<500 ND<2500
<br /> 10-31-00 16.44 1,500' NA 360 43 30 110 11,000 9,700 ND<350 ND<350 ND<350 N13<1800
<br /> MW-3 01-31-01 15.38 12 to 32 1,800' 1303 400 8.9 44 110 29,000 21,000 ND<350 ND<350 ND<350 ND<350
<br /> 04-30-01 15.78 1,400' NA 200 8.6 17 80 24,000 25,000 ND<500 ND<500 ND<500 ND<2500
<br /> 12-04-01 18.21 60,000 NA ND<0.5 ND<0.5 ND<0.5 ND<l 54,000 509000 Noel ND<l Noel ND<5
<br /> 07-11-00 15.77 1,2001 NA 48 1-3 ND<0.5 47 ND<0.5 ND<1 NIKI ND<1 ND<l ND<5
<br /> 10-31-00 17.15 2,10011 NA 140 14 36 21 ND<10 6.9 ND<l Noel ND<1 ND<5
<br /> MW-4 01-31-01 15.99 12 to 32 1,600" 1503 6.7 2.8 2.1 1.2 ND<10 ND<170 ND<170 ND<170 ND<170 ND<850
<br /> 04-30-01 16.40 1,300" NA 6 0.73 1.5 1.9 ND<5 2.3 ND<I ND<l ND<1 ND<5
<br /> 12-04-01 18.78 2,100 NA 2.8 ND<0.5 ND<0.5 2.4 ND<1 ND<5 ND<1 ND<1 ND<1 ND<5
<br /> 07-11-00 14.99 ND<50 NA ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<l ND<1 Noel ND<l ND<5
<br /> 10-31-00 16.36 ND<50 NA ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<1 ND<1 Noel ND<l ND<5
<br /> MW-5 01-31-01 15.30 . 8'h to 28% ND<50 ND<50 ND<0.5 ND<0.5 0.6 ND<0.5 ND<5 ND<1 ND<l ND<l ND<l ND<5
<br /> 04-30-01 15.63 ND<50 NA ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<1 ND<l NIXI ND<l ND<5
<br /> 12-04-01 18.16 ND<50 NA ND<0.5 ND<0.5 ND<0.5 ND<l ND<l ND<5 ND<l ND<1 ND<i ND<5
<br /> MW-6 04-30-01 17.05 L25 to 45 160,000NA 11,000 32,000 2,000 12,000 1,900,000 2,000,000 ND<50000 ND<50000 ND<50000 ND<25000
<br /> Nates:
<br /> All samples reported as micrograms per liter(µgfl)or parts per billion
<br /> TPH-g:total petroleum hydrocarbons quantified as gasoline;TPH-0:total petroleum hydrocarbons quantified as diesel;MTBE:methyl tertiary butyl ether
<br /> significant unmodified or weakly modified gasoline; 2:one to a few isolated peaks;3:gasoline range compounds are significant;no recognizable pattern
<br /> Advanced GwEnvironmental,Inc.
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