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Surrogate Summary <br /> Client: Conestoga-Rovers&Associates, Inc. TestAmerica Job ID: 720-65573-1 <br /> Project/Site: TUSD/080238 <br /> Method: 8082 - Polychlorinated Biphenyls (PCBs) by Gas Chromatography <br /> Matrix: Solid Prep Type:Total/NA <br /> Percent Surrogate Recovery(Acceptance Limits) <br /> TCX1 DCB1 <br /> Lab Sample ID Client Sample ID (45-132) (42-146) <br /> 720-65573-1 B-20-0.5 98 92 <br /> 720-65573-1 MS B-20-0.5 105 103 <br /> 720-65573-1 MSD B-20-0.5 101 94 <br /> 720-65573-2 B-20-5 95 100 <br /> 720-65573-3 B-21-0.5 87 89 <br /> 720-65573-4 B-21-5 86 98 <br /> 720-65573-5 B-22-0.5 65 82 <br /> 720-65573-6 B-22-5 64 81 <br /> 720-65573-7 CONCRETE-1 69 84 <br /> 720-65573-8 CONCRETE-2 65 81 <br /> LCS 720-183964/2-A Lab Control Sample 99 117 <br /> MB 720-183964/1-A Method Blank 94 110 <br /> Surrogate Legend <br /> TCX=Tetrachloro-m-xylene <br /> DCB=DCB Decachlorobiphenyl <br /> TestAmerica Pleasanton <br /> Page 15 of 31 6/23/2015 <br />