Document EqdLQjJpBB544nweDL9B0OnrR

UBIEGILO2see##241-1280 Diaoorrratatit206638@3 FFfilek1006/2Y221224 Plgge431 of @28 IN THE UNITED STATES COURT OF APPEALS FOR THE DISTRICT OF COLUMBIA CIRCUIT ELECTRIC GENERATORS FOR A SENSIBLE TRANSI"FIC)N, Petitioner, Case No.: 24-1128 U.S. ENVIRONMENTAL PROTECTION AGENCY, Respondent. DECLARATION OF DALE E. LEBSACK, JR. I, Dale E. Lebsack, Jr., declare as follows: 1. I currently work as Chief Fossil Officer for Talen Energy Corporation ("Talen"). I am over the age of 18 years, and I am competent to testify concerning the matters in this declaration. I have personal knowledge of the facts set forth in this declaration, and if called and sworn as a witness, could and would competently testify to them. 2. Petitioners Talen Generation, LLC and Talen Montana I Ioldings, LLC (the "Talen Entities") are wholly owned subsidiaries of Talen. Talen is an independent power producer that owns and operates approximately 10.7 gigawatts of power infrastructure in the United States. Talen produces and sells electricity, capacity, and ancillary services Sierra Club FOIA 2025-EPA-04883 ED_018388_00000309-00051 SC_EVERSPLIT0006214