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COLUMBIA ANALYTICAL SERVICES, INC. <br /> QA/QC Report <br />• Client: Equiva Service~ Service Request 59901977 <br /> Project SAP 121258/In+ident 88870583 Date Collected NA <br /> Sample Matrix Soil Date Received- NA <br /> Date Extracted NA <br /> Date Analyzed NA <br /> Surrogate Recovery Summlary <br /> BTEX 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 4-13romofluorobenzene a,a,a-Tnfluorotoluene <br /> SP-IAB COMP S9901977-037 99 103 <br /> SP-2AB COMP 59901977-038 106 93 <br /> SP-3AB COMP 59901977-039 102 95 <br /> SP-4AB COMP 59901977-040 100 105 <br /> SP-5AB COMP 59901977-041 100 100 <br /> SP-6AB COMP S9901977-042 97 101 <br /> SP-7AB COMP 59901977-043 103 94 <br /> SP-8A13 COMP 59901977-044 102 96 <br />• SP-9AB COMP S9901977-045 100 97 <br /> SP-10AB COMP 59901977-046 98 95 <br /> SP-1 IAB COMP 59901977-047 99 98 <br /> SP-12AB COMP 59901977-048 100 92 <br /> SP-13AB COMP 59901977-049 100 95 <br /> SP-14AB COMP 59901977-050 102 97 <br /> SP-ISAB COMP S9901977-051 104 98 <br /> SP-16AB COMP 59901977-052 107 90 <br /> SP-17AB COMP 59901977-053 111 93 <br /> SP-I8AB COMP 59901977-054 104 99 <br /> SP-14AB COMP 59901977-050 MS 96 112 <br /> SP-14AB COMP 59901977-050 DMS 99 110 <br /> SP-14AB COMP S9901977-050 MS 98 104 <br /> SP-14AB COMP 59901977-050 DMS 99 99 <br /> Method Blank 5990701-SBI 103 87 <br /> CAS Acceptance Limits 51-137 51-137 <br />�1 <br /> Approved By a4� Dater <br /> SUR21020397p <br /> Page 36 <br />