CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER C—AIR PROGRAMS (Parts 50–99) > PART 81—DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES > SUBPART C—Section 107 Attainment Status Designations (§81.300 to §81.356) > 81.329—Nevada.

81.329—Nevada.

Nevada—TSP
Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
(Township Range):
Clark County:
Las Vegas Valley (212)(15-24S, 56-64E) X
Colorado River Valley (213) (22-33S, 63-66E) X 1
Rest of County 2 X
Carson Desert (101)(15-24.5N, 25-35E) X
Winnemucca Segment (70)(34-38N, 34-41E) X
Code of Federal Regulations 364
Lower Reese Valley (59)(27-32N, 42-48E) X
Fernley Area (76)(19-21N, 23-26E) X
Truckee Meadows (87)(17-20N, 18-21E) X
Mason Valley (108)(9-16N, 24-26E) X
Clovers Area (64)(32-39N, 42-46E) X
1 EPA designation replaces State designation.
2 Rest of County refers to 27 hydrographic areas either entirely or partially located within Clark County as shown on the State of Nevada Division of Water Resources' map titled Water Resources and Inter-basin Flows (September 1971), excluding the two designated areas in Clark County specifically listed in the table.
Nevada—SO2
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):
Central X
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 61 X
Lower Unit 61 X
Rest of State 1 X
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—Carbon Monoxide
Designated Area Designation Classification
Date 1 Type Date 1 Type
Lake Tahoe Nevada Area
Hydrographic Area 90 Carson City County (part) Douglas County (part) Washoe County (part) 2/13/04 Attainment
Las Vegas Area: 9/27/10 Attainment
Clark County (part)
Las Vegas Valley
Hydrographic Area 212
Reno Area: Washoe County (part) Truckee Meadows Hydrographic Area 87 8/4/08 Attainment
Rest of State Unclassifiable/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
Code of Federal Regulations 365
White Pine County
1 This date is November 15, 1990, unless otherwise noted.
Nevada—Ozone (1-Hour Standard)3
Designated area Designation Classification
Date 1 Type Date 1 Type
Reno Area:
Washoe County (2) Nonattainment (2) Marginal.
Rest of State Unclassifiable/Attainment
Carson City
Churchill County
Clark County
Douglas County
Elko County
Esmeralda County
Eureka County
Humboldt County
Lander County
Lincoln County
Lyon County
Mineral County
Nye County
Pershing County
Storey County
White Pine County
1 This date is October 18, 2000, unless otherwise noted.
2 This date is January 16, 2001.
3 The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Nevada except the portion of Clark County designated nonattainment for the 8-hour ozone standard effective September 13, 2004 for which the 1-hour ozone standard is revoked effective September 13, 2005.
Nevada—PM-10
Designated area Designation Classification
Date Type Date Type
Washoe County:
Reno planning area 11/15/90 Nonattainment 02/07/01 Serious.
Hydrographic area 87
Clark County:
Las Vegas planning area 11/15/90 Nonattainment 02/08/93 Serious.
Hydrographic area 212
Boulder Flat (61) (31-37N, 45-51E):
Upper Unit 61 11/15/90 Unclassifiable
Lower Unit 61 11/15/90 Unclassifiable
Rest of State 1 11/15/90 Unclassifiable
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), as revised to include a division of Carson Desert (area 101) into two areas, a smaller area 101 and area 101A, and excluding the designated areas specifically listed in the table.
Nevada—NO2
Designated area Does not meet primarystandards Cannot beclassifiedor better than national standards
Boulder Flat (61)(31-37N, 45-51E):
Upper Unit 61 X
Lower Unit 61 X
Rest of State 1 X
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—Ozone (8-Hour Standard)
Designated area Designation a Category/classification
Date 1 Type Date 1 Type
Las Vegas, NV:
Clark County (2) Nonattainment (2) Subpart 1 .
That portion of Clark County that lies in hydrographic areas 164A, 164B, 165, 166, 167, 212, 213, 214, 216, 217, and 218 but excluding the Moapa River Indian Reservation and the Fort Mojave Indian Reservation. b
Rest of State Unclassifiable/Attainment
Carson City
Churchill County
Clark County
(part) remainder
Douglas County
Elko County
Esmeralda County
Eureka County
Humboldt County
Lander County
Lincoln County
Lyon County
Mineral County
Nye County
Pershing County
Storey County
Washoe County (Reno Area)
White Pine County
a Includes Indian Country located in each county or area, except as otherwise specified.
b The use of reservation boundaries for this designation is for purposes of CAA planning only and is not intended to be a federal determination of the exact boundaries of the reservations. Nor does the specific listing of the Tribes in this table confer, deny or withdraw Federal recognition of any of the Tribes listed or not listed.
1 This date is June 15, 2004, unless otherwise noted.
2 The effective date is September 13, 2004.
Nevada—PM2.5 (Annual NAAQS)
Designated area Designation a
Date 1 Type
Statewide 2 Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after January 5, 2005, unless otherwise noted.
2 Statewide 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—PM2.5 [24-hour NAAQS]
Designated area Designation for the 1997 NAAQS a Designation for the 2006 NAAQS a
Date 1 Type Date 2 Type
Statewide 3 Unclassifiable/Attainment Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after January 5, 2005, unless otherwise noted.
2 This date is 30 days after November 13, 2009, unless otherwise noted.
3 Statewide 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).

Code of Federal Regulations

[43 FR 8964, Mar. 3, 1978]

Code of Federal Regulations

Editorial Note: For Federal Register citations affecting § 81.329 see the List of CFR Sections Affected which appears in the Finding Aids section of the printed volume and at www.fdsys.gov.