Nevada.

§ 81.329 Nevada.

Nevada—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
(Township Range):
Steptoe Valley (179) (10-29N, 61-67E):
CentralX
Northern (area which is north of Township 21 North and within the drainage basin of the Steptoe Valley)X
Southern (area which is south of Township 15 North and within the drainage basin of the Steptoe Valley)X
Boulder Flat (61) (31-37N, 45-51E):
Upper Unit 61X
Lower Unit 61X
Rest of State 1X

1 Rest of State refers to hydrographic areas as shown on the State of Nevada Division of Water Resources' map titled Water Resources and Inter-basin Flows (September 1971), excluding the designated areas specifically listed in the table.

Nevada—2010 Sulfur Dioxide NAAQS

[Primary]

Designated area 1Designation
Date 2Type
State of Nevada 3Attainment/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.

3 Rest of State refers to hydrographic areas as shown on the State of Nevada Division of Water Resources' map titled “Water Resources and Inter-basin Flows” (September 1971), as revised to include a division of Carson Desert (area 101) into two areas, a smaller area 101 and area 101A, and a division of Boulder Flat (area 61) into an Upper Unit 61 and a Lower Unit 61. See also 67 FR 12474 (March 19, 2002).

Nevada—Carbon Monoxide

Designated Area Designation Classification
Date 1Type Date 1Type
Lake Tahoe Nevada Area
Hydrographic Area 90 Carson City County (part) Douglas County (part) Washoe County (part)2/13/04Attainment
Las Vegas Area:9/27/2010Attainment
Clark County (part)
Las Vegas Valley
Hydrographic Area 212
Reno Area: Washoe County (part) Truckee Meadows Hydrographic Area 878/4/08Attainment
Rest of StateUnclassifiable/Attainment
Carson City County (part)
Area outside Hydrographic Area 90
Churchill County
Clark County (part)
Area outside Las Vegas Valley Hydrographic Area 212
Douglas County (part)
Area outside Hydrographic Area 90
Elko County
Esmeralda County
Eureka County
Humboldt County
Lander County
Lincoln County
Lyon County
Mineral County
Nye County
Pershing County
Storey County
Washoe County (part)
Remainder of county
White Pine County
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