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' 0 0 <br /> COLUMBIA ANALYTICAL SERVICES,INC. <br /> ' QA/QC Report <br /> Client: EMCON Service Request: K9504048 <br /> Project: Tosco-Tracy/#2788-100.002 <br /> Date Collected: 6/29/95 <br /> Sample Matrix: Water Date Received: 6/30/95 <br /> Date Extracted: NA <br /> Date Analyzed: 7/5/95 <br /> Surrogate Recovery Summary <br /> BTEX and Total Petroleum Hydrocarbons as Gasoline <br /> EPA Methods 5030A/8020 and California DHS LUFr Method <br /> ' <br /> Sample Name Percent Recovery Percent Recovery <br /> Lab Code 4-BFB BTE <br /> (PID- � 4-BFB (FID-GAS) <br /> HP-1 K9504048-001 <br /> 92 <br /> -2 K9504048-002 96 93 <br /> ' HP-3 K9504048-003 96 97 <br /> Method BlankK950705-WB 96 <br /> 96 96 <br /> CAS Acceptance Limits: 69-114 65-117 <br /> Approved Bv: D <br /> SURL11119< Date: <br /> ' 040MPHC.W02-B7XwS /695 <br /> Page No.: <br />