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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: EMCON Associates Service Request: S9415I0 <br /> Project: TOSCO#1119310952-091.02 Date Collected: 11/22/94 <br /> Sample Matrix: Soil Date Received: 11/22/94 <br /> Date Extracted: 11/30/94 <br /> Date Analyzed: 12/3,4/94 <br /> Surrogate Recovery Summary <br /> Hydrocarbon Scan <br /> California DHS LUFr Method <br /> Percent Recovery <br /> Sample Name Lab Code p-Terphenyl <br /> 11193-TPH J S-10 S941510-001 85 <br /> 11193-TPH1S-15 S941510-002 82 <br /> • 11193-TPH2S-10 S941510-003 $0 <br /> 11193-TPH2S-15 S941510-004 77 <br /> 11193-TD-2 5941510-005 37 « <br /> 11193-TD-3 5941510-006 59 <br /> Method Blank 5941130-SB 62 <br /> CAS Acceptance Limits: 41-140 <br /> * Surrogate recovery outside of acceptance limits due to matrix interference. <br /> Approved By: V ` ' r ? � �J <br /> Date: `` <br />