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•r <br /> COLUMBIA ANALYTICAL SERVICES, INC <br /> QA/QC Report <br /> Client EMCON Service Request- S9900683 <br /> wti Piolect Apache Pla,,ticJ22640-100 001 Date Collected NA <br /> Sample MAI it Soil Date Rccerved NA <br /> Date Extracted NA <br /> Date Analyzed NA <br /> Surrogate Recovery Summary <br /> BTEX and TPH as Gasohne <br /> Prep Method EPA 5030 Units PERCENT <br /> Analysis Method 8020 CA/LU1"T Basis NA <br /> Test Percent Recovery <br /> Sample Name LAI) Code Notes 4-Bromofluorobenzene a,a,a-Tritluorotoluene <br /> STP-1234 59900683-005 79 95 <br /> B-1(66) S9900683-006 77 96 <br /> B-1(74) S9900683-007 93 100 <br /> B-1(82) 59900683-008 99 97 <br /> B-1(105) S9900693-009 97 91 <br /> B-2(82) 59900683-010 101 86 <br /> B-2(96) 59900683-011 75 89 <br /> B-2(102) 59900683-012 81 93 <br /> B-2(108) 59900683-013 79 94 <br /> Method Blank 5990304-SBI 75 81 <br /> Method Blank S990306-SBI 77 76 <br /> CAS Acceptance Limits 51-137 51-137 <br /> WR2/02M7P <br /> Page 53 <br />