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COLUMBIA ANALYTICAL SERVICES, INC. <br /> Client: EMCON Associates Date Received: 08/26/92 �. <br /> Project: EMCON Project No, G71-38.01 Work Order#. SJ92-1071 <br /> Arco Facility No. 2168 Sample Matrix: Water <br /> QA/QC Report <br /> Surrogate Recovery Summary <br /> Halogenated Volatile Organic Compounds <br /> EPA Methods 5030/601 <br /> B-amnle Name Date Analyzed PgrcenJ Recoym <br /> 4-Bromofluarobenzene <br /> MW-1 (54) 09/02/92 105 <br /> MW-2 (53) 09/02/92 101 <br /> MW-3 (54) 09/02/92 102 <br /> MW-1 (54) MS 09/02/92 123 <br /> MW-1 (54) DMS 09/02/92 123 <br /> Method Blank 09/02/92 87 <br /> CAS Acceptance Criteria 70-130 <br /> Approved by _" __ Date �q Z <br /> 12 <br />