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TABLE 3 <br /> LABORATORY ANALYSES - GROUNDWATER <br /> Knowles Property - Stockton, CA <br /> Page 6 of 6 <br /> (in parts per billion) <br /> DATE WELL ID BENZENE. TOLUENE ETHYLBENZENE XYLENES ' TPHG <br /> 11/05/98 MW1 20 <0 5 23 18 1,000 <br /> MW4 <05 <0 6 <0 5 <06 <50 <br /> MW5 7,900 2,900 1,100 7,000 66,000 <br /> MW8 <05 <0 5 <0 5 <O 5 <50 <br /> Primary MCLs 1 O 100 680 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 /> 3 = When compared to the gasoline standard, proportion chromatogram contains a higher ro of <br /> g g p p peaks that <br /> elute before benzene <br /> MCLS = Maximum Contaminant Levels <br /> NA = Not Applicable <br /> groundze\ nowles hamlgwlab doc <br />