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y 11 <br /> COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client ARCO Products Company Service Request: S9601539 <br /> Project: 2130 Stockton 1#21775-229 002/TO#19350 00 Date Collected- 9/18196 <br /> Sample Matnx: Water Date Received- 9/20/96 <br /> Date Extracted: NA <br /> Date Analyzed. 9/30-10/2/96 <br /> Surrogate Recovery Summary <br /> BTEX,MTBE and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LUFY'Method <br /> PID Detector FID Detector <br /> Percent Recovery Percent Recovery <br /> Sample Name Lab Code 4-Bromofluorobenzene a.,a.,a-Tnfluorotoluene <br /> MW-1 (73) S9601539-001 99 104 <br /> MW-2(7 1) S9601539-002 96 106 <br /> MW-3 (73) 59601539-003 103 102 <br /> MW-4(74) 59601539-004 102 103 <br /> MW-5 (76) S9601539-005 99 102 <br /> MW-6(72) 59601539-006 98 107 <br /> MW-7(72) S960t539-007 102 104 <br /> MW-10 (71) 59601539-008 88 101 Y <br /> MW-3 (73)(MS) S960t539-003MS 105 102 <br /> MW-3 (73)(DMS) S960t539-003DMS 104 105 <br /> Method BIank 5960930-WB1 101 95 <br /> Method Blank 5961001-WB1 !00 102 <br /> Method BIank S961002-VMI 102 99 <br /> CAS Acceptance Limits 69-116 69-116 <br /> Y The surrogate used for this sample was 4-Bromofluorobenzene <br /> SURV060194 <br /> Page 8 <br />