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COLUMBIA ANALYTICAL SERVICES, INC. <br /> QA/QC Report <br /> Client: F , EMCON Associates �i <br /> . Service Request: 5941406 <br /> Project: TOSCO # 1 11,91 10952-089.02 Date Collected: 11/8/94 <br /> Sample Matrix: Soil Date Received: t 1/9/94 <br /> Date Extracted: NA <br /> Date Analyzed: 11/11,12194 <br /> Surrogate Recovery Summary <br /> .BTEX and TPH as Gasoline <br /> EPA Methods 503018020/California DHS LUFT Method <br /> Percent Recovery <br /> Sample Name Lab Code a,a,a-Trifluorotoluene <br /> 11191-THPIS-10 �.t - 5941406-OOI 98 <br /> 11191-THPiS-20 5941406-002 106 <br /> 11191-THP 1 S-00 S941406-003 99 <br /> 11191-THP2S-10 S941406-004 102 <br /> 11191-THP2S 25 5941406=005 105 <br /> 11 191-THP3S-10 S941406-006 99 <br /> 11 191-THP3S-15 S941406-007 99 <br /> Method Blank 5941111-SB 113 <br /> i . <br /> CAS Acceptance Limits: 51-137 <br /> Approved 13Y 10,t R Date: <br /> SUR I M62994 - L <br />