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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 1 BENZENE TOLUENE ETHYLBENZENE XYLENES TPHG <br /> I <br /> 08/10/00 MW1 13 <05 33 14 610 <br /> MW2 <05 <05 <05 <05 <50 <br /> MW3 <05 08 <05 <05 <50 <br /> MW4 <0 5 <05 <06 <05 <50 <br /> MW5 7,600 730 230 2,800 46,000 <br /> MW8 <05 <05 <05 <05 <50 <br /> 11/14/00 MW1 27 <05 71 2 5 250 <br /> MW4 <05 <05 <05 <05 <60 <br /> MW5 7,400 7,200 1 600 8 800 100,000 <br /> MW8 <06 <05 <05 <05 <50 <br /> 02/09/01 MW1 15 16 32 3 3 70 <br /> MW3 <05 <05 <0 5 <05 <50 <br /> MW4 <05 <05 <05 <05 <50 <br /> • MW5 4,800 1,600 540 3,600 33,000 <br /> MW8 <05 <05 <0 6 <05 <50 <br /> 05/22/01 MW1 21 <06 7 7 4 5 290 <br /> MW4 <05 <05 <05 <06 <50 <br /> MW5 6,300 2,800 1 700 9 500 66,000 <br /> MW8 40 32 47 28 210 <br /> 08/06/01 MW1 26 <05 32 07 180 <br /> MW2 <06 <05 <05 <05 <50 <br /> MW3 <05 <05 <05 <05 <50 <br /> MW4 <06 <05 <05 <05 <50 <br /> MW5 4,100 860 300 2 600 35 000 <br /> MWS <05 <0 6 <0 5 <05 <60 <br /> Primary MCLS 1 0 160 780 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 /> e[ute before benzene <br /> MCLS = Maximum Contaminant Levels <br /> •, NA = Not Applicable <br /> groundze\ nowles hamlgwlab dou <br />