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' • COLUMBIA ANALYTICAL SERVICES,INC. <br /> ' QA/QC Report <br /> Client: EMCON Service Request: K9504048 <br /> Project: Tosco-Tracv/#2788-100.002 <br /> Sample Matrix: Soil Date Collected: 6/29/95 <br /> Date Received: 6/30/95 <br /> ' Date Extracted: 7/3/95 <br /> Date Analyzed: 7/5-6/95 <br /> Surrogate Recovery Summary <br /> ' Total Petroleum Hydrocarbons as Diesel and Oil <br /> California DHS Luft Method <br /> ' Sample Name Percent Recovery <br /> Lab Code o-Terphenyl <br /> ' HP-1-10.0' K9504048-007 84 <br /> HP-2-11' K9504048-011 78 <br /> ' HP-3 K9504048-013 75 <br /> Method Blank K950703-NM 83 <br /> i 1 <br /> CAS Acceptance Limits 56-116 <br /> 1 <br /> 1 - <br /> ' ApprovedBv: Date: 7( 7 /73 <br /> SUR I/111594 <br /> ' 04048P14C.LP3-TPHeSUR 7R/9 <br /> Page No.: <br /> it A n • - <br />