§ 81.345 Utah.

Utah—1971 Sulfur Dioxide NAAQS

[Primary and Secondary]

¹ EPA designation replaces State designation.

Utah—2010 Sulfur Dioxide NAAQS

[Primary]

¹ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the boundaries of any area of Indian country in this table, including any area of Indian country located in the larger designation area. The inclusion of any Indian country in the designation area is not a determination that the state has regulatory authority under the Clean Air Act for such Indian country. The lands of the Navajo Nation, including those lands located geographically within Utah, are excluded, as they are separately designated under Section 81.303.

² This date is April 9, 2018, unless otherwise noted.

Utah—Carbon Monoxide

¹ This date is November 15, 1990, unless otherwise noted.

Utah—Ozone (1-Hour Standard) ²

¹ This date is October 18, 2000, unless otherwise noted.

² The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Utah. The Salt Lake City area is a maintenance area for the 1-hour NAAQS for purposes of 40 CFR part 51 subpart X.

Utah—PM-10

¹ Denotes a single area designation for PSD baseline area purposes.

Utah—1997 Annual PM_2.5 NAAQS

[Primary and Secondary]