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COLUMBIA ANALYTICAL SERVICES, INC <br /> QA/QC Report <br /> Client EM- CON associates Service Request 5950271 <br /> Project ARCO FacuitN No 414 / EMCON Project No 1775-700 01 Date Collected. 3/2/95 <br /> Sample Matrix eater Date Received 313/95 <br /> Date Extracted NA <br /> Date Analvzed- 3/14 15/95 <br /> Surrogate Recovery Summary <br /> BTEX and TP14 as Gasoline <br /> EPA Methods 5030/8020/California DHS LUFT Method <br /> Percent Recovery <br /> Sample Name Lab Code U,a,cx-Tnfluorotoluene <br /> W-I A(77') S95027I-001 94 <br /> W-2(78� 5950271-002 99 <br /> W-2A(64') 5950271-003 94 <br /> . W-2B (86') S950271-004 95 <br /> W-3 (68') 5950271-005 95 <br /> W-5 (69') S95027I-006 96 <br /> W-7(69') S950271-007 95 <br /> W-8(69') S950271-008 98 <br /> W-9(78') S950271-009 97 <br /> W-10 (78') 5950271-010 99 <br /> W-11 (79') S950271-011 96 <br /> W-12 (77) S950271-012 96 <br /> W-2B (86') MS 5950271-004MS 102 <br /> W-2B (86') DMS S95027I-004DMS 102 <br /> Method Blank 5950314-WB 96 <br /> CAS Acceptance Ltrrmts 69-116 <br /> Approved By <br /> Date /7 <br /> SUR I/462494 <br /> Page 5 <br /> 1�7� Rfr1 F1WAf1f� Avcn„n • Cnn In<n r..11. .",, !]q A-1A - T..1,..L......, rnnrin� n nr r� e•++ . <br />