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r'y <br /> COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report s. <br /> s <br /> Client: EMCON Associates Service Request: 5941406 <br /> Project: TOSCO# 11191 10952-089.02 Date Collected: 1118194 <br /> Sample Matrix: Soil Date Received: 11/9/94 j <br /> Date Extracted: NA <br /> Date Analyzed: 11114,15194 <br /> Surrogate Recovery Summary <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LUFr Method <br /> i <br /> Percent Recovery <br /> Sample Name Lab Code a,a,a-Trifluorotoluene <br /> s <br /> 11191-TD-1 5941406-008 96 <br /> 11191-TD-2 5941406-009 95 <br /> Method Blank S941114-SB 93 <br /> CAS Acceptance Limits: 59-115 <br /> Approved By: _. r— � �s Date: <br /> SURIMM4 <br /> Page 9 of 1 I <br />