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COLUMBIA ANALYTICAL SERVICES, INC <br /> 4 <br /> Analytical Report <br /> Client EMCON Associates Date Received 06/11/93 <br /> Project EMCON Project No OG71-038 01 Service Request No SJ93-0776 <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 Method Blank <br /> Date Analyzed 06/15/93 06/14/93 06/14/93 <br /> Analyte MRL <br /> Dichlorodifluoromethane (Freon 12) 1 < 10 <20 NO <br /> Chloromethane 1 < 10 <20 ND <br /> Vinyl Chloride 05 <5 < 10 NO <br /> Bromornethane 0 5 <5 < 10 ND <br /> Chloroethane 05 <5 < 10 ND <br /> Trichlorofluoromethane (Freon 1 1) 0 5 <5 < 10 ND <br /> 1,1-Dichloroethene 05 <5 < 10 ND <br /> Trichlorotrifluoroethane (Freon 1 13) 0 5 <5 < 10 NO <br /> Methylene Chloride 05 <5 < 10 ND <br /> trans-1,2-Dichloroethene 0 5 <5 < 10 ND <br /> cis-1,2-Dichloroethene 05 <5 < 10 ND <br /> 1,1-Dichloroethane 05 <5 <10 ND <br /> Chloroform 0 5 <5 < 10 ND <br /> 1,1,1-Trichloroethane (TCA) 05 <5 < 10 NO <br /> Carbon Tetrachloride 0 5 <5 < 10 ND <br /> 1,2-Dichloroethane 0 5 43 130 NO <br /> Trichloroethene (TCE) 05 <5 < 10 ND <br /> 1,2-Dichloropropane 0 5 <5 < 10 ND <br /> Bromodichloromethane 0 5 <5 < 10 ND <br /> 2-Chloroethy! Vinyl Ether 5 <50 < 100 ND <br /> trans-l,3-Dichloropropene 0 5 <5 < 10 ND <br /> cls-1,3-Dichloropropene 0 5 <5 < 10 NO <br /> 1,1,2-Trichloroethane 0 5 <5 < 10 N D <br /> Tetrachloroethene (PCE) 0 5 <5 < 10 ND <br /> Dibromoch(oromethane 0 5 <5 < 10 ND <br /> Chlorobenzene 0 5 <5 < 10 NO <br /> Bromoform 0 5 <5 < 10 ND <br /> 1,1,2,2-Tetrachloroethane 0 5 <5 < 10 NO <br /> 1,3-Dichlorobenzene 1 <10 <20 ND <br /> 1,4-Dichlorobenzene 1 < 10 <20 NO <br /> 1,2-Dichlorobenzene 1 <10 <20 ND <br /> * Raised MRL due to high analyte concentration requiring sample dilution <br /> Approved by LC/(M Dated <br /> 7 <br />