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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client EMCON Service Request- 5951091 <br /> Project Teschert- Stockton/OF'90-002 004 Date Collected. 8/30/95 <br /> Sample Matrix Water Date Received, 8/31/95 <br /> Date Extracted* NA <br /> Date Analyzed: 9/8-11/95 <br /> Surrogate Recovery Surnmary <br /> B=and TPH as Gasoline <br /> EPA Methods 5030/8020/Caltforma DHS LUFT Method <br /> Percent Recovery <br /> Sample Dame Lab Code a,a,a-Trtfluorotoluene <br /> MW-9 5951091-001 97 <br /> MW-10 595109I-002 98 <br /> MW-I 1 5951091-003 96 <br /> MW-14 S951091-004 ill <br /> Method Blank 5950908-WB 94 <br /> Method Blank 5950911-WB 98 <br /> CAS Acceptance Limits 69-116 <br /> SURI1062994 <br /> Page 5 <br />