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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 XYLENESr TPHG <br /> 11/05/98 MW1 20 <05 23 18 1,000 <br /> MW4 <05 <05 <06 <06 <50 <br /> MW5 7,900 2,900 1,100 7,000 56,000 <br /> MW8 <05 <05 <06 <06 <60 <br /> 02/24/99 MW1 08 <06 10 15 63 <br /> MW3 <05 <05 <05 <05 <60 <br /> MW4 <05 <05 <06 <06 <50 <br /> MW6 10,000 5,000 1,500 9,500 65,000 <br /> MW8 <05 <05 <06 <05 <50 <br /> 05/11/99 MW1 <05 <05 <05 <05 <50 <br /> MW4 <05 <05 <06 <06 <50 <br /> MW6 9,400 4,300 1,200 9,000 63,000 <br /> MW8 <05 <05 <06 <05 <50 <br /> Primary MCL, 10 100 680 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, chromatogram contains a higher proportion of peaks that <br /> elute before benzene <br /> MCLS - Maximum Contaminant Levels <br /> NA = Not Applicable <br /> groundzelknowles hamlgwlab doc <br />