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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 <05 33 14 610 <br /> MW2 <06 <05 <05 <05 <50 <br /> MW3 <05 08 <05 <05 <50 <br /> MW4 <05 <05 <05 <05 <50 <br /> MW5 7,600 730 230 2,800 46,000 <br /> MW8 <06 <05 <06 <06 <50 <br /> 11/14/00 MW1 27 <06 71 2 6 260 <br /> MW4 <06 <06 <05 <05 <50 <br /> MW5 7,400 7,200 1,600 8,800 100,000 <br /> MW8 <05 <06 <06 <06 <50 <br /> 02/09/01 M W 1 15 16 32 33 70 <br /> MW3 <05 <06 <05 <05 <60 <br /> MW4 <05 <05 <05 <06 <50 <br /> MW5 4,800 1,600 640 3,600 33,000 <br /> MW8 <05 <05 <06 <05 <50 <br /> 5/22/01 MW1 21 <05 7 7 45 290 <br /> MW4 <05 <05 <05 <06 <60 <br /> MW5 5 300 2,800 1,700 9,500 66,000 <br /> MW8 40 32 47 28 210 <br /> Primary MCLs 1 0 150 780 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 /> 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 doe <br />