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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client EMCON Associates Date Received 11/01/93 <br /> Project: EMCON Project No OG71-038 01 Service Request No SJ93-1339 <br /> ARCO Facility No 2168 Sample Matrix Water <br /> Halogenated Volatile Organic Compounds <br /> EPA Methods 5030/601 <br /> ug/L (ppb) <br /> Sample Name MW-4 (59) MW-5 (55) ` MW-6 (47) • <br /> Date Analyzed 11/03/93 11/03/93 11/03/93 <br /> Analyte MRL <br /> Dichlorodifluoromethane (Freon 12) 1 NO <20 < 100 <br /> Chloromethane 1 NO <20 <100 <br /> Vinyl Chloride 05 ND < 10 <50 <br /> Bromomethane 05 ND < 10 <50 <br /> I Chloroethane 05 ND < 10 <50 <br /> Trichlorofluoromethane (Freon 1 1) 0 5 ND < 10 <50 <br /> 1,1-Dichloroethene 0 5 NO < 10 <50 <br /> Trichlorotrifluoroethane (Freon 113) 0 5 ND < 10 <50 <br /> Methylene Chloride 0 5 ND < 10 <50 <br /> trans-1,2-Dichloroethene 0 5 NO < 10 <50 <br />�. cis-1,2-Dichloroethene 0 5 NO < 10 <50 <br /> 1,1-Dichloroethane 0 5 NO < 10 <50 <br /> Chloroform 0 5 ND < 10 <50 <br /> 1,1,1-Trichloroethane (TCA) 0 5 NO < 10 <50 <br /> Carbon Tetrachloride 0 5 NO < 10 <50 <br /> 1 ,2-Dichloroethane 0 5 73 210 690 <br /> Trichloroethene (TCE) 0 5 NO < 10 <50 <br /> 1,2-Dichloropropane 0 5 30 12 <50 <br /> Bromodichloromethane 0 5 ND < 10 <50 <br /> 2-Chloroethyl Vinyl Ether 5 NO < 100 <500 <br /> trans-l,3-Dichloropropene 0 5 NO < 10 <50 <br /> cis-1 ,3-Dichloropropene 05 NO < 10 <50 <br /> 1,1,2-Trichloroethane 05 ND < 10 <50 <br /> I Tetra chIoroethene (PCE) 0 5 NO < 10 <50 <br /> DEbromochloromethane 0 5 NO < 10 <50 <br /> Chlorobenzene 0 5 NO < 10 <50 <br /> Bromoform 0 5 ND < 10 <50 <br /> 1 ,1,2,2-Tetrachloroethane 0 5 NO < 10 <50 <br /> 1 ,3-Dichlorobenzene 1 NO <20 < 100 <br /> 1 ,4-Dichlorobenzene 1 NO <20 < 100 <br /> I 1,2-Dichlorobenzene 1 ND <20 < 100 <br /> 1 <br /> Raised MILL due to high analyte concentration requiring sample dilution <br /> Approved by ( &19:� & _ Date /( ' /oz -q 3 <br /> 7 <br />