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COLUMBIA ANALYTICAL SERVICES, INC. <br /> 6Client: EQA/QC Report <br /> lv(CON Service Request: S9900996 <br /> Project: Teichert&Sons,Stockton/20F90-002.007 Date Collected: NA <br /> Sample Matrix: Soil Date Received: NA <br /> Date Extracted: NA <br /> Date Analyzed: NA <br /> Surrogate Recovery Summary <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-Bromofluorobenzene a,a,a-Trifluorotoluene <br /> TK-5E S9900996-001 80 105 <br /> TK-5CE 59900996-002 93 105 <br /> TK-5CW 59900996-003 76 108 <br /> TK-5W S9900996-004 89 98 <br /> TK-6E S9900996-005 85 96 <br /> TK-6CE 59900996-006 86 102 <br /> TK-6CW S9900996-007 90 104 <br /> TK-6W S9900996-008 84 102 <br /> Method Blank 5990402-SBI 102 102 <br /> • <br /> CAS Acceptance Limits: 51-137 51-137 <br /> SUR21020391p <br />