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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br />' Client: EMCON Service Request: S950650 <br /> Project: ARCO Facilitv No 2130/EMCON Project No 1775-229 001 Date Collected: 5/19/95 <br /> Sample Matrix Water Date Received: 5122/95 <br /> Date Extracted: NA <br /> Date Analyzed: 5/26-31195 <br /> Surrogate Recovery Summary <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/Caltforma DHS LUFT Method <br /> Percent Recovery <br /> r Sample Name Lab Code cx,cx,Lx-Trifluorotoluene <br /> MW-1 (73) 5950650-001 105 <br /> MW-2 (72) 5950650-002 <br /> 108 <br /> MW-3 (73) S950650-003 94 <br /> MW-4(74) 5950650-004 94 <br /> MW-5 (76) S950650-005 <br /> 94 <br /> MW-6 (72) 5950650-006 98 <br /> MW-7 (72) 5950650-007 95 <br /> MW-8(74) 5950650-008 94 <br /> MW-10 (71) S950650-009 100 <br /> MW-7 (72)(MS) S950650-007MS 104 <br /> MW-7 (72) (DMS) 5950650-007DMS 105 <br /> Method Blank S950525-WB 1 8$ <br /> ' Method Blank 5950526-WB2 92 <br /> 1 <br /> CAS Acceptance Luiuts 69-116 <br /> Approved By Date 6 3 <br /> ' `�6Rl/062994 <br /> 0650 XLS GR1 SrW 6/N9S Pip Na 05 <br />