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v <br /> COLUMBIA ANALYTICAL SERVICES.INC. <br /> QA/QC ReportClient: ARCO Products Company Service Request: 59601538 <br /> Project: 2186 Stockton/#21775-237.002/TO##19350.00 Date Collected: 9/19196 <br /> Sample Matrix: Water Date Received: 9/20/96 <br /> Date Extracted: NA <br /> Date Analyzed: 10/1-2/96 <br /> Surrogate Recovery Summary <br /> BTEX,MTBE and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LL` 7 Method <br /> PID Detector FID Detector <br /> Percent Recovery Percent Recovery <br /> Sample Name Lab Code 4-Bromofluorobenzene oc,a.,a—Trifluorotoluene <br /> MW-1 (74) S9601538-001 99 106 <br /> MW-2 (74) S9601538-002 102 107 <br /> MW-3 (74) S9601538-003 104 103 <br /> VW-31) (60) S9601538-004 106 113 <br /> MW-2 (74)(MS) 59601538-002MS I01 110 <br /> MW-2 (74) (DMS) 59601538-002DMS 101 111 <br /> Method Blank S961001-WB1 100 102 <br /> Method Blank S951002-WBI 102 99 <br /> CAS Acceptance Limits: 69-116 69-116 <br /> SUR2/0 0194 <br /> Page 6 <br />