EQC202411itemF-AttE

DETP/24/947

434th regular meeting of the Oregon Environmental Quality Commission Item F: 2024 Total Dissolved Gas Modification Order for the Mainstem Columbia River (Action) DEQ will present the 2024 Total Dissolved Gas Modification Order for the mainstem Columbia River for commission action. Oregon's current TDG Modification Order expired on Aug. 31, 2024. The U.S. Army Corps of Engineers requested DEQ renew its TDG modification to allow for the anticipated operations to proceed in the upcoming 2025 fish passage spill season.