EPA is approving a State Implementation Plan (SIP) revision submitted by the State of North Dakota. The revision, adopted by North Dakota on February 1, 2005, to Chapter 33-15-15 of the North Dakota Administrative Code (Prevention of Significant Deterioration of Air Quality), incorporates EPA's December 31, 2002 NSR Reforms. North Dakota submitted the request for approval of these rule revisions into the State Implementation Plan (SIP) on February 10, 2005. North Dakota has a federally-approved Prevention of Significant Deterioration (PSD) program for new and modified sources impacting attainment areas in the State. North Dakota is in attainment for all pollutants, and does not have a SIP-approved non-attainment permit program. This action is being taken under section 110 of the Clean Air Act.