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' TABLE 3 <br /> . LABORATORY ANALYSES - GROUNDWATER <br />' Knowles Property - Stockton, CA <br /> Page 7 of 7 <br /> (in parts per billion) <br />' DATE WELL ID BENZENE TOLUENE ETHYLBENZENE XYLENES TPHG <br />' 08/10/00 MW1 13 <0 5 33 14 610 <br /> MW2 <05 <05 <05 <05 <50 <br /> MW3 <05 08 <0 5 <0 5 <50 <br /> MW4 <05 <0 5 <0 5 <05 <50 <br /> MW5 7 600 730 230 2 800 46 000 <br />' MW8 <05 <05 <0 5 <05 <50 <br /> 11/14/00 MW1 27 <05 71 25 250 <br /> MW4 <O 5 <05 <05 <05 <50 <br />' MW5 7,400 7 200 1 600 8 800 100,000 <br /> MW8 <05 <05 <05 <05 <50 <br /> 02/09/01 M W 1 15 16 32 33 70 <br /> MW3 <0 5 <05 <0 5 <0 5 <50 <br /> MW4 <05 <0 5 <0 5 <05 <50 <br /> MW5 4 800 1 500 540 3 600 33,000 <br /> MW8 <05 <0 5 <05 <05 <50 <br /> 05/22/01 MW1 21 <05 7 7 45 290 <br /> MW4 <05 <0 5 <0 5 <05 <50 <br /> MW5 6,300 2,800 1,700 9 500 66,000 <br /> MW8 40 32 47 28 210 <br /> 08/06/01 M W 1 2 5 <05 3 2 0 7 180 <br /> MW2 <05 <05 <05 <05 <50 <br /> MW3 <0 5 <0 5 <0 5 <0 5 <50 <br /> MW4 <0 5 <0 5 <0 5 <0 5 <50 <br /> MW5 4 100 860 300 1 2 600 35 000 <br /> MW8 <0 5 <05 <0 5 <0 5 <50 <br /> 11/09/01 MW1 73 <05 27 12 560 <br /> MW4 <05 <05 <05 <10 <50 <br /> MW5 2,700 1 000 330 2,300 24,000 <br /> Primary MCLs 10 156 780 1,750 NA <br /> NOTES — <br /> TPHG Total Petroleum Hydrocarbons as Gasoline, Analyzed by EPA Method 8015 Benzene Toluene <br /> Ethylbenzene Xylenes analyzed by EPA Method 8020 <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 fingerprint <br /> ' = When compared to the gasoline standard chromatogram contains a higher proportion of peaks that <br /> elute before benzene <br /> MCLS Maximum Contaminant Levels <br /> NA Not Applicable <br /> groundze\knowles hamlgwlah doc. <br />