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Table 3-2. Summary of Groundwater Monitoring Results ` Method Compound Name MW1 10/15/2002`. Water MW2 10/16/2002 Water ...:` 3 10/16/2002 Water MW4 10/16/2002 Water 82608 Carbon tetrachloride < 1 < 2.5 < 1 < 2 B260B Chlorobenzene < 1 < 2.5 < 1 < 2 82608 Chloroethane < 2 < 5 < 2 < 4 82608 Chloroform < 1 < 2.5 < 1 < 2 8260B Chloromethane < 2 < 5 < 2 < 4 8260B cis-1,2-Dichloroethene < 1 < 2.5 < 1 < 2 82608 cis-1,3-Dichloropropene < 1 < 2.5 < 1 < 2 8260B Dibromochloromethane < 1 < 2.5 < 1 < 2 8260B Dibromomethane < 1 < 2.5 < 1 < 2 8260B Dichlorodifluoromethane < 2 < 5 < 2 < 4 82608 Ethylbenzene < 1 2.6 < 1 < 2 8260B Hexachlorobutadiene < 1 < 2.5 < 1 < 2 82608 Isopropylbenzene < 1 1 1 < 1 < 2 8260B Methyl tert-butyl ether < 5 < 12 < 5 < 10 82608 Methylene chloride < 5 < 12 < 5 < 10 8260B m-Xylene & p-Xylene < 2 1.4 J < 2 < 4 82608 Naphthalene < 1 < 2.5 < 1 < 2 82608 n-Butylbenzene < 1 < 2.5 < 1 < 2 8260B n-Propylbenzene < 1 < 2.5 < 1 < 2 8260B o-Xylene < 1 0.72 J < 1 < 2 82608 p-Isopropyltoluene < 1 < 2.5 < 1 < 2 8260B sec-Butylbenzene < 1 < 2.5 < 1 < 2 8260B Styrene < 1 < 2.5 < 1 < 2 B260B tert-Butylbenzene < 1 < 2.5 < 1 < 2 82608 Tetrachloroethene < 1 < 2.5 < 1 < 2 B260B Toluene < 1 <2.5 < 1 1.8 1 82606 trans-1,2-Dichloroethene < 0.5 < 0.5 < 1 B260B trans-1,3-Dichloropropene < 1 R < 1 < 2 82608 Trichloroethene < 1 < 1 2 8260B Trichlorofluoromethane < 2 < 2 < 4 8260B Vinylchloride < 1 < 1 < 2 8260B Xylene (Total) < 2 2.1 J < 2 < 4 Notes: All units in ug/L unless otherwise noted B Method blank contamination. The associated method blank contains the target analyte at a reportable level. J Estimated result. Result is less than Reporting Limit. G:\AProject\Holcim\00000884.0001 - LaPorte Phase 2\Report Final\Phase 11 ESA\Final CKD Wells Report_Gordon Benton Request 042805.xls Page 2 of 2