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Surrogate Summary <br />Job ID: 310-305029-1Client: Braun Intertec Corporation <br />SDG: B2502087Project/Site: 2026 PMP Improvements <br />Method: 8082A - Polychlorinated Biphenyls (PCBs) by Gas Chromatography <br />Prep Type: Total/NAMatrix: Solid <br />Lab Sample ID Client Sample ID (15-150) (24-150) <br />DCB2 TCX2 <br />94 99310-305026-B-1-F MS <br />Percent Surrogate Recovery (Acceptance Limits) <br />Matrix Spike <br />104 114310-305026-B-1-G MSD Matrix Spike Duplicate <br />69 79310-305029-1 O-1 <br />78 73310-305029-2 O-2 <br />54 56310-305029-3 O-3 <br />84 95LCS 310-453316/2-A Lab Control Sample <br />91 99MB 310-453316/1-A Method Blank <br />Surrogate Legend <br />DCB = DCB Decachlorobiphenyl (Surr) <br />TCX = Tetrachloro-m-xylene (Surr) <br />Method: 8082A - Polychlorinated Biphenyls (PCBs) by Gas Chromatography <br />Prep Type: Total/NAMatrix: Solid <br />Lab Sample ID Client Sample ID (15-150) (24-150) <br />DCB1 TCX1 <br />66 70310-305029-4 <br />Percent Surrogate Recovery (Acceptance Limits) <br />O-4 <br />56 56310-305029-5 O-5 <br />Surrogate Legend <br />DCB = DCB Decachlorobiphenyl (Surr) <br />TCX = Tetrachloro-m-xylene (Surr) <br />Eurofins Cedar Falls <br />Page 14 of 41 5/13/2025 (Rev. 2) <br />1 <br />2 <br />3 <br />4 <br />5 <br />6 <br />7 <br />8 <br />9 <br />10 <br />11 <br />12 <br />13 <br />14 <br />15