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§ 81.351 Wyoming.
Wyoming—1971 Sulfur Dioxide NAAQS
[Primary and Secondary]
| Designated area | Does not meet primary standards | Does not meet secondary standards | Cannot be classified | Better than national standards |
|---|---|---|---|---|
| Entire State | X |
Wyoming—2010 Sulfur Dioxide NAAQS
[Primary]
| Designated area 1 | Designation | |
|---|---|---|
| Date 2 | Type | |
| Albany County | Attainment/Unclassifiable. | |
| Big Horn County | Attainment/Unclassifiable. | |
| Campbell County | Attainment/Unclassifiable. | |
| Carbon County | 4/30/2021 | Attainment/Unclassifiable. |
| Converse County | 4/30/2021 | Attainment/Unclassifiable. |
| Crook County | Attainment/Unclassifiable. | |
| Fremont County (part) | Attainment/Unclassifiable. | |
| All areas west of the western border of Township 40North-Range 93West, T39N–R93W, and T38N–R93W, and south of U.S. Route 20. | ||
| Freemont County (remainder) | 4/30/2021 | Attainment/Unclassifiable. |
| Goshen County | Attainment/Unclassifiable. | |
| Hot Springs County | Attainment/Unclassifiable. | |
| Johnson County | Attainment/Unclassifiable. | |
| Lincoln County | Attainment/Unclassifiable. | |
| Natrona County | Attainment/Unclassifiable. | |
| Niobrara County | Attainment/Unclassifiable. | |
| Park County | Attainment/Unclassifiable. | |
| Platte County | Attainment/Unclassifiable. | |
| Sheridan County | Attainment/Unclassifiable. | |
| Sublette County | Attainment/Unclassifiable. | |
| Sweetwater County (part) | Attainment/Unclassifiable. | |
| All areas of the county east of U.S. Route 191. | ||
| Sweetwater County (remainder) | 4/30/2021 | Attainment/Unclassifiable. |
| Teton County | Attainment/Unclassifiable. | |
| Uinta County | Attainment/Unclassifiable. | |
| Washakie County | Attainment/Unclassifiable. | |
| Weston County | Attainment/Unclassifiable. | |
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.
2 This date is April 9, 2018, unless otherwise noted.
Wyoming—Carbon Monoxide
| Designated Area | Designation | Classification | ||
|---|---|---|---|---|
| Date 1 | Type | Date 1 | Type | |
| Statewide | Unclassifiable/Attainment | |||
| Albany County | ||||
| Big Horn County | ||||
| Campbell County | ||||
| Carbon County | ||||
| Converse County | ||||
| Crook County | ||||
| Fremont County | ||||
| Goshen County | ||||
| Hot Springs County | ||||
| Johnson County | ||||
| Laramie County | ||||
| Lincoln County | ||||
| Natrona County | ||||
| Niobrara County | ||||
| Park County | ||||
| Platte County | ||||
| Sheridan County | ||||
| Sublette County | ||||
| Sweetwater County | ||||
| Teton County | ||||
| Uinta County | ||||
| Washakie County | ||||
| Weston County | ||||
1 This date is November 15, 1990, unless otherwise noted.
Wyoming—Ozone (1-Hour Standard) 2
| Designated area | Designation | Classification | ||
|---|---|---|---|---|
| Date 1 | Type | Date 1 | Type | |
| Statewide | Unclassifiable/Attainment | |||
| Albany County | ||||
| Big Horn County | ||||
| Campbell County | ||||
| Carbon County | ||||
| Converse County | ||||
| Crook County | ||||
| Fremont County | ||||
| Goshen County | ||||
| Hot Springs County | ||||
| Johnson County | ||||
| Laramie County | ||||
| Lincoln County | ||||
| Natrona County | ||||
| Niobrara County | ||||
| Park County | ||||
| Platte County | ||||
| Sheridan County | ||||
| Sublette County | ||||
| Sweetwater County | ||||
| Teton County | ||||
| Uinta County | ||||
| Washakie County | ||||
| Weston County | ||||
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 Wyoming.
Wyoming—PM–10
| Designated Area | Designation | Classification | ||
|---|---|---|---|---|
| Date | Type | Date | Type | |
| Sheridan County: | ||||
| City of Sheridan | 5/4/2018 | Attainment | ||
| Trona Industrial Area | 11/15/90 | Unclassifiable | ||
| Campbell County (part) | 11/15/90 | Unclassifiable | ||
| Converse County (part). | ||||
| That area bounded by Township 40 through 52 North, and Ranges 69 through 73 West, inclusive of the Sixth Principal Meridian, Campbell and Converse Counties, excluding the areas defined as the Pacific Power and Light Area, the Hampshire Energy Area, and the Kennecott/Puron PSD Baseline Area—Powder River Basin. | ||||
| Campbell County (part), That areabounded by NW1/4 of Section 27, T50N, R71W, Campbell County, Wyoming—Pacific Power and Light Area | 11/15/90 | Unclassifiable | ||
| Campbell County (part), That area bounded by Section 6 excluding the SW 1⁄4; E 1⁄2 Section 7; Section 17 excluding the SW 1⁄4; Section 14 excluding the SE 1⁄4; Sections 2, 3, 4, 5, 8, 9, 10, 11, 15, 16 of T48N, R70W and Section 26 excluding the NE 1⁄4; SW 1⁄4 Section 23; Sections 19, 20, 21, 22, 27, 28, 29, 30, 31, 32, 33, 34, 35 of T49N, R70W.—Hampshire Energy Area | 11/15/90 | Unclassifiable | ||
| Campbell County (part), That area described by the W 1⁄2SW 1⁄4 Section 18, W 1⁄2NW 1⁄4, NW 1⁄4SW 1⁄4 Section 19, T47N, R70W, S 1⁄2 Section 13, N 1⁄2, N 1⁄2SW 1⁄4, N 1⁄2SE 1⁄4 Section 24, T47N, R71W.—Kennecott/Puron PSD Baseline Area | 11/15/90 | Unclassifiable | ||
| Rest of State 1 | 11/15/90 | Unclassifiable | ||