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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: EMCON Associates Service Request: 5941406 <br /> Project: TOSCO# It 191 1 0952-089.02 Date Collected: 11/8/94 <br /> Sample Matrix: Soil Date Received: 1119/94 <br /> Date Extracted: NA <br /> Date Analyzed: 11/10,11/94 <br /> Surrogate Recovery Summary <br /> Halogenated Volatile Organic Compounds <br /> EPA Methods 5030/8010 <br /> 4 t <br /> 1 <br /> Percent Recovery <br /> Sample Name Lab Code + y 4-Bromofluorobenzene <br /> r > <br /> 11191-THP 1 S-10 5941406-001 102 <br /> 11191-THP 15-20 _ S941406-002 103 <br /> 11191-THP l 5-60 5941406-003 ` 105 <br /> Method Blank S941110-SB 103 <br /> t � <br /> v ` <br /> _ CAS Acceptance Limits: 79-141 <br /> l <br /> Approved By: Date: ./' �"�9 <br /> SURM62"4 ' <br /> Page 11 of 11 r <br />