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COLUMBIA ANALYTICAL SERVICES, INC <br /> QA/QC Report <br /> •) Client I-M(-ON Service Request 59900683 <br /> Project Apache Pldstic,/22640-100 001 Date Collected NA <br /> Sample Mati ix water Date Received NA <br /> Date Extracted NA <br /> Date Analyzed NA <br /> Surrogate Recovery Sammary <br /> BTEX, MTBE and TPH as Gasoline <br /> Prep Method EPA 5030 Units PERCENT <br /> Analysis Method 8020 CAILM Basis NA <br /> Test Percent Recovery <br /> Sample Name Lab Code Notes 4-Bromofluorobenzene a,a,a-Trifluorotoluene <br /> HP-1(70) 59900683-014 97 88 <br /> HP-1(100) S9900683-015 97 91 <br /> HP-2(64) 59900683-016 95 91 <br /> HP-2(76) S9900683-017 98 88 <br /> HP-2(90) S9900693-018 89 88 <br /> HP-2(102) S9900683-019 97 89 <br /> Method Bldnk((YC2) 5990308-WB1 98 85 <br /> Method Blank((YC2) 5990307-WBI 102 91 <br /> Method Bldnk(OC 1) S990306-WBI 96 90 <br /> CAS Acceptance Limits 69-116 69-116 <br /> i <br /> 'UR2l020197y <br /> Page 54 <br />