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COLUMBIA ANALYTICAL SERVICES, INC. <br /> . QA/QC Report <br /> Client: EMCON Associates Service Request: 5941510 <br /> Project: TOSCO #11193 10952-091.02 Date Collected: 11/22/94 <br /> Sample Matrix: Water Date Received: 11/22/94 <br /> Date Extracted: NA <br /> Date Analyzed: 11/29/94 <br /> Surrogate Recovery Summary <br /> Halogenated Volatile Organic Compounds <br /> EPA Methods 5030/8010 <br /> Percent Recovery <br /> Sample Name Lab Code 4-Bromofluorobeamne <br /> 11193-THP 1 W-25 5941510-007 125 <br /> Method Blank S941129-WB 115 <br /> �s <br /> CAS Acceptance Limits: 76-138 - <br /> �j <br /> Approved By: Date. (! <br /> SURIM2991 <br /> Page 15 of 16 <br />