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COLUMBIA ANALYTICAL SERVICES, INC ;`' <br /> QA/QC Report ' <br /> Client EMCON Associates Date Received 06/11/93 <br /> 1 Project EMCON Project No OG71-038 01 Service Request No SJ93-0776 <br /> ARCO Facility No 2168 Sample Matrix Water <br /> I <br /> Surrogate Recovery Summary <br /> Halogenated Volatile Organic Compounds <br /> EPA Methods 5030/601 <br /> I <br /> Sample Name Date Analyzed Percent Recovery <br /> 4-Bromofluorobenzene <br /> MW-1 (54) 06/14/93 105 <br /> MW-2 (53) 06/14/93 97 <br /> MW-3 (53) 06/14/93 104 <br /> MW-4 (59) 06/15/93 98 <br /> MW-5 (55) 06/14/93 108 <br /> I� MW-1 (54) MS 06/14/93 106 <br /> MW-1 (54) DMS 06/14/93 107 <br /> Method Blank 06/14/93 110 <br /> Method Blank 06/15/93 114 <br /> 1 <br /> CAS Acceptance Criteria 70-130 <br /> 1 <br /> I <br /> 1 <br /> ff <br /> Approved by xgiv 0 Date <br /> 14 <br />