The Environmental Protection Agency (EPA) is partially approving and partially disapproving a regional haze state implementation plan (SIP) revision submitted by the State of North Dakota on August 11, 2022 (North Dakota's 2022 SIP submission) to address applicable requirements under the Clean Air Act (CAA) and the EPA's Regional Haze Rule (RHR) for the regional haze program's second implementation period. The EPA is taking this action pursuant to the CAA.