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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Blaes Environmental Service Request: L9605070 <br /> Project: U-Haul/#709-83 Date Collected: NA <br /> Sample Matrix: Soil Date Received: NA <br /> Date Extracted: NA <br /> Date Analyzed: NA <br /> Surrogate Recovery Summary <br /> MTBE,BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/Modifled 8015/California DHS LUFT Method <br /> Percent Recovery Percent Recovery <br /> Sample Name Lab Code 4-Bromofluorobenzene 4-Bromofluorobenzene <br /> Tl-1 14' L9605070-001 91 93 <br /> T1-2 14' L9605070-002 93 92 <br /> T2-1 14' L9605070-003 93 89 <br /> T2-2 14' L9605070-004 91 96 <br /> SP-1 L9605070-005 109 <br /> SP-2 L9605070-006 86 88 <br /> SP-3 L9605070-007 91 91 <br /> Method Blank L961223-MB 108 113 <br /> Matrix Spike L9605020-OO1MS 85 87 <br /> Duplicate Matrix Spike L9605020-OOIDMS 87 90 <br /> li <br /> CAS Acceptance Limits: 60-130 40 <br /> p 60 1 <br /> * Not Applicable because of the sample matrix. The gas chromatogram showed target <br /> components that interfered with determination of the surrogate. The sample was not reanalyzed. <br /> Approved By: Date: <br /> sua2/120594 —1J <br /> L9605D70.3a,S N20.Mw <br />