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TABLE 3 <br /> LABORATORY ANALYSES - GROUNDWATER <br /> Knowles Property - Stockton, CA <br /> Page 7 of 7 <br /> (in pans per billion) <br /> DATE WELL tD BENZENE TOLUENE ETHYLBENZENE XYLENES TPHG <br /> 08/10/00 M W 1 13 <05 33 14 610 <br /> MW2 <05 <O 5 <O 5 <05 <50 <br /> MW3 <05 08 <05 <05 <50 <br /> MW4 <0 5 <05 <05 <06 <50 <br /> MW6 7,600 730 230 2 800 46 000 <br /> MW8 <05 <06 <05 <05 <50 <br /> 11/14/00 MW1 27 <0 5 7 1 25 260 <br /> MW4 <05 <0 5 <0 5 <05 <60 <br /> MW6 7,400 7,200 1,600 8,800 100 000 <br /> MW8 <05 <0 6 <06 <05 <50 <br /> Primary MCLs 1 0 160 780 1,750 NA <br /> NOTES <br /> TPHG = Total Petroleum Hydrocarbons as Gasoline, Analyzed by EPA Method 8016, 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 /> a = When compared to the gasoline standard chromatogram contains a higher g g proportion of peaks that <br /> elute before benzene <br /> MCLS = Maximum Contaminant Levels <br /> NA = Not Applicable <br /> groundzalknowle&hamlgwlab doo <br />