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TABLE 2 <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 /> 12/30/96 MW1 57 27 69 99 2,500 <br /> MW2 <05 <05 <05 <05 <60 <br /> MW4 <05 <05 <0 5 <05 <50 <br /> MW5 32,000 29,000 4,600 38,000 190,000 <br /> MW8 <05 <05 <0 5 <05 <50 <br /> 2121197 M W 1 10 24 13 12 270 a <br /> MW3 <05 <05 <05 <05 <50 <br /> MW4 <06 <0 6 <06 <05 <60 <br /> MW5 13,000 6,600 1,200 10,000 97,000 <br /> MW8 <05 <05 <0 5 <05 <50 <br /> 6/09/97 MW1 88 15 97 88 3,600 <br /> MW4 <0 6 <06 <0 5 <0 6 <50 <br /> MW5 12,000 6,600 1,300 11,000 95,000 <br /> MW8 <05 <0 5 <0 5 <05 <50 <br /> 8/13/97- M W 1 96 46 150 120 5,000 0 t <br /> r <br /> 8/14/97 MW2 <05 <0 5 <0 5 <05 <50 <br /> MW3 <06 <05 <0 6 <05 <50 <br /> MW4 <06 <05 <05 <05 <50 <br /> MW6 11,000 7,800 1,600 12,000 94,000 <br /> MW8 <05 <05 <06 <05 <50 <br /> Primary MCLs 1 0 100 680 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 /> 1 = 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 /> grouodzellmowl"hz=Vnble2 dao <br />