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COLUMBIA ANALYTICAL SERVICLS, INC <br /> QA/QC Report <br /> CIient EMCON Service Request 59901190 <br /> Project Apache Plastics,Stockton/22640-100 001 Date Collected NA <br /> Sample Matrix Water Date Received NA <br /> Date Extracted NA <br /> Date Analyzed NA <br /> Surrogate Recovery Summary <br /> BTEX, MTBE and TPH as Gasoline <br /> Prep Method EPA 5030 Units PERCENT <br /> Analysis Method 8020 CA/LUFT Basis NA <br /> Test Percent Recovery <br /> Sample Name Lab Code Notes 4-Bromofluorobenzene a,a,a-Trifluorotoluene <br /> MW-8 59901190-001 87 100 <br /> MW-9 59901190-002 97 97 <br /> Method Blank 5990421-WB 1 99 97 <br /> Method Blank S990420-WB l 99 93 <br /> �y <br /> CAS Acceptance Limits 69-116 69-116 <br /> i <br /> QR2102039?p <br /> Pao, !7 <br />