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COLUMBIA ANALYTICAL SERVICES,INC. ' <br /> 1. <br /> QA/QC Report <br /> Client: EMCON Associates Service Request: 5941424 <br /> Project: TOSCO#11192/0952-090.02 Date Collected: 11/9,10194 <br /> Sample Matrix: Soil Date Received: 11/11/94 <br /> Date Extracted: 11/16/94 <br /> Date Analyzed: 11/16,17/94 <br /> Surrogate Recovery Summary <br /> Hydrocarbon Scan <br /> California DHS LUFT Method <br /> Percent Recovery <br /> Sample Name Lab Code p-Terphenyl <br /> 11192-THP4S-10 S941424-001 43 <br /> 11192-THP4S-25 5941424-002 93 <br /> 11192-THP1S-10 S941424-003 91 <br /> 11192 TBPIS-25 S941424-004 100 <br /> 11192-THP2S-10 S941424-005 102 <br /> 11192-THP2S-25 5941424-006 96 <br /> 11192-THP3S-10 S941424-007 97 <br /> 11192-THP3 S-25 S941424-008 98 <br /> Method Blank S941115-SB 99 <br /> CAS Acceptance Limits: 41-140 <br /> 0 <br /> Approved By: Date: <br /> SURIM2994 <br /> Page 11 of 15 <br />