The Nebraska DWEE is proposing to issue a Class I operating permit to NPPD-Hebron Peaking Unit for two internal combustion turbines at 1377 County Road, Hebron, Thayer County, under Title 129 Nebraska Air Quality Regulations. Potential emissions include 9,585 tpy sulfur dioxide, 3,374 tpy nitrogen oxides, 627,259 tpy greenhouse gases, and 7.68 tpy total hazardous air pollutants. The public comment period runs from April 22 through May 21, 2026; Thayer County currently meets NAAQS for regulated pollutants. The proposed permit requires fuel flow meters, opacity monitoring, and applicable recordkeeping and reporting.