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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: ARCO Products Company Service Request: S951234 <br /> ' Project: 1775-237.001 /TO# 17075.00/2186 Stockton Date Collected: 9/25/95 <br /> Sample Matrix: Water Date Received: 1012/95 <br /> Date Extracted: NA <br /> ' Date Analvzed: 1014,5195 <br /> Surrogate Recovery Summary <br /> ' TPH as Gasoline <br /> BPA Methods 5030/California DHS LUFT Method <br /> PID Detector FID Detector <br /> ' Percent Recovery Percent Recovery <br /> n <br /> Sample Name Lab Code 4-Bromofluorobenzee cx,(x,a—Trifluorotoh1ene <br /> MW-1 (75) 5951234-001 97 92 <br /> MW-2 (75) S951234-002 102 87 <br /> MW-3 (74) S95I234-003 100 90 <br /> MS 5951203-0(11 MS 97 104 <br /> DMS S951203-0 I1 DMS 98 103 <br /> Method BIank S951004-WB 94 90 <br /> Method Blank 5951005-WB 95 88 <br /> 1 <br /> 1 CAS Acceptance Limits: 69-116 69-116 <br /> suRvoaw9a <br /> t Page 5 <br />