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TABLE 2 <br /> Laboratory Analysis of Water Samples <br /> Knowles Property - Stockton, CA <br /> Page 3 of 3 <br /> (in ppb) <br /> SAMPLE DATE WELL 1D B T E X TPHG7 <br /> 12/15/92 MW1 22 07 41 45 1,100 <br /> MW2 <05 1 3 <05 05 670 <br /> MW3 DRY WELL <br /> MW4 18 07 <05 07 410 <br /> M W5 630 410 200 1,100 20,000 <br /> MW6 <0 5 <05 <05 <05 <50 <br /> MW7 <0 5 09 <0 5 07 <50 <br /> MW8 <05 <05 <0 5 <0 5 <50 <br /> 03/12/93 MW1 190 24 40 32 2400* <br /> MW2 ND 23 ND ND 1100* <br /> MW3 DRY WELL <br /> MW4 ND ND ND ND 430* <br /> MW5 1600 800 280 1400 25,000 <br /> MW6 ND ND ND I ND ND <br /> MW7 ND ND ND ND ND <br /> MW8 ND ND ND ND ND <br /> NOTES <br /> ppb = parts per billion = iugll = micrograms per liter <br /> B = Benzene analyzed by EPA method 8020 <br /> T = Toluene analyzed by EPA method 8020 <br /> E — Ethylbenzene analyzed by EPA method 8020 <br /> X = Xylenes analyzed by EPA method 8020 <br /> TPHG = Total Petroleum Hydrocarbons as Gasoline analyzed by EPA method modified 8015 <br /> < = Not Detected at or above method detection limits <br /> = Sample chromatogram does not match gasoline fingerprint <br /> 2 = Sample chromatogram contains an unidentified peak which does not match gasoline <br /> fingerprint <br /> = When compared to the gasoline standard, chromatogram contains a higher proportion <br /> of peaks that elute before benzene <br /> TABLES%90-93TBL SAY <br />