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rl ` <br /> COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: EMCON Associates Service Request: 5941510 <br /> Project: TOSCO 4 11193 /0952-091,02 Date Collected: 11/22/94 <br /> Sample Matrix: Soil Date Received: 11/22/94 <br /> Date Extracted: NA <br /> Date Analyzed: 12/2-5/94 <br /> Surrogate Recovery Summary <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LUFr Method <br /> Percent Recovery <br /> Sample Name Lab Code a,a,a-Trifluorotoluene <br /> 11193-TD-2 5941510-005 92 <br /> 11193-TD-3 5941510-006 95 <br /> . Method Blank S941202-SB 98 <br /> Method Blank 5941205-SB 42 <br /> CAS Acceptance Limits: 59-115' <br /> Approved By: <br /> Date: <br /> suaIro62vc4 <br /> Dw.... 1 7 _C l L <br />