Idaho.

  1. Law
  2. CFR 40
  3. Protection of Environment
  4. Environmental Protection Agency
  5. Air Programs
  6. Designation of Areas for Air Quality Planning Purposes
  7. Section 107 Attainment Status Designations
  8. Idaho.

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§ 81.313 Idaho.

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Idaho - 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
Eastern Idaho Intrastate AQCR 61:
Pocatello X
Remainder of AQCR 61 X
Eastern Washington-Northern Idaho Interstate AQCR 62 (Idaho Portion):
Silver Valley (Shoshone County) X
Remainder of AQCR 62 (Idaho Portion) X
Idaho Intrastate AQCR 63 X
Metropolitan Boise Intrastate AQCR 64 X
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Idaho - 2010 Sulfur Dioxide NAAQS

[Primary]

Designated area1 Designation
Date2 Type
Entire State 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.

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Idaho - Carbon Monoxide

Designated Area Designation Classification
Date1 Type Date1 Type
Boise - Northern Ada County Area:
The Boise-Ada County nonattainment area is described as follows: Beginning at a point in the center of the channel of the Boise River which the section line between sections fifteen (15) and sixteen (16), Township three (3) north, range four (4) east crosses said river; thence down the center of the channel of the Boise River to a point opposite the mouth of Mores Creek. Thence in a straight line north forty four (44) degrees and 36 minutes west until the said line intersects the north line of Township five (5) north (12 Ter. Ses. 67); thence west to the northwest corner of Township five (5) north, range one (1) west; thence southerly to the northwest corner of Township three (3) north, range one (1) west; thence east to the northwest corner of Section four (4) township three (3) north, range one (1) west; thence south to the southeast corner of section thirty-two (32), township two (2) north, range one (1) west; thence, west to the northwest corner township one (1) north, range one (1) west; thence southerly to the southwest corner of township one (1) north, range one (1) west; thence east to the southwest corner of section thirty-three (33), township one (1) north, range four (4) east; thence in a northerly direction along the north and south centerline of township one (1), two (2) and three (3) north, range four (4) east, Boise Meridian, to a point in the center of the channel of the Boise River where the section line between section fifteen (15) and sixteen (16) township three (3) north, range four (4) east, Boise Meridian crosses said Boise River, the point of beginning 12/27/02 Attainment.
AQCR 61 Eastern Idaho Intrastate Unclassifiable/Attainment
Bannock County
Bear Lake County
Bingham County
Bonneville County
Butte County
Caribou County
Clark County
Franklin County
Fremont County
Jefferson County
Madison County
Oneida County
Power County
Teton County
AQCR 62 Eastern Washington N Idaho Interstate Unclassifiable/Attainment
Benewah County
Kootenai County
Latah County
Nez Perce County
Shoshone County
AQCR 63 Idaho Intrastate Unclassifiable/Attainment
Adams County
Blaine County
Boise County
Bonner County
Boundary County
Camas County
Cassia County
Clearwater County
Custer County
Elmore County
Gem County
Gooding County
Idaho County
Jerome County
Lemhi County
Lewis County
Lincoln County
Minidoka County
Owyhee County
Payette County
Twin Falls County
Valley County
Washington County
AQCR 64 Metropolitan Boise Intrastate (Remainder of) Unclassifiable/Attainment
Ada County (part)
Remainder of County
Canyon County

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

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Idaho - Ozone (1-Hour Standard)2

Designated area Designation Classification
Date1 Type Date1 Type
AQCR 61 Eastern Idaho Intrastate Unclassifiable/Attainment
Bannock County
Bear Lake County
Bingham County
Bonneville County
Butte County
Caribou County
Clark County
Franklin County
Fremont County
Jefferson County
Madison County
Oneida County
Power County
Teton County
AQCR 62 E Washington-N Idaho Interstate Unclassifiable/Attainment
Benewah County
Kootenai County
Latah County
Nez Perce County
Shoshone County
AQCR 63 Idaho Intrastate Unclassifiable/Attainment
Adams County
Blaine County
Boise County
Bonner County
Boundary County
Camas County
Cassia County
Clearwater County
Custer County
Elmore County
Gem County
Gooding County
Idaho County
Jerome County
Lemhi County
Lewis County
Lincoln County
Minidoka County
Owyhee County
Payette County
Twin Falls County
Valley County
Washington County
AQCR 64 Metropolitan Boise Interstate Unclassifiable/Attainment
Ada County
Canyon 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 Idaho.

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Idaho PM-10

Designated area Designation Classification
Date Type Date Type
Eastern Idaho IntraState AQCR 61: 08/14/06 Attainment.
Power-Bannock Counties, part of: (Pocatello)
State Lands-Portneuf Valley Area:
T.5S, R.34E Sections 25-36
T.5S, R.35E Section 31
T.6S, R.34E Sections 1-36
T.6S, R.35E Sections 5-9, 16-21, 28-33, plus the west 1⁄2 of sections 10, 15, 22, 27, 34
T.7S, R.34E Sections 1-4, 10-14, and 24
T.7S, R.35E Sections 4-9, 16-21, 28-33, plus the west 1⁄2 of sections 3, 10, 15, 22, 27, 34
T.8S, R.35E Section 4 plus the west 1⁄2 of section 3
Power-Bannock Counties, part of: (Pocatello) 11/15/90 Nonattainment 11/15/90 Moderate
Fort Hall Indian Reservation:
T.5S, R.34E Sections 15-23
T.5S, R.33E Sections 13-36
T.6S, R.33E Sections 1-36
T.7S, R.33E Sections 4, 5, 6
T.7S, R.34E Section 8
Pocatello: 336 square mile area from Schiller at the northwest to Inkom at southeast, excluding the Portneuf Valley and Fort Hall nonattainment areas 11/15/90 Unclassifiable
Soda Springs: 96 square mile area encompassing Soda Springs, Conda and the industrial area in between 11/15/90 Unclassifiable
Remainder of AQCR 61 11/15/90 Unclassifiable
Eastern Washington-Northern Idaho Interstate AQCR 62 (Idaho portion):
Shoshone County: Pinehurst Expansion Area Northwest quarter of the Northwest quarter, Section 8, Township 48 North, Range 2 East; Southwest quarter of the Northwest quarter, Section 8, Township 48, North, Range 2 East; Northwest quarter of the Southwest quarter, Section 8, Township 48 North, Range 2 East; Southwest quarter, Section 8, Township 48 North, Range 2 East; Southwest quarter of the Southwest quarter, Section 48 North, Range 2 East, Boise Base (known as “Pinehurst expansion area”) 10/11/18 Attainment
City of Pinehurst 10/11/18 Attainment
Idaho Intrastate AQCR 63:
Bonner County: Sandpoint Area: Section 1-3, 9-12, 15, 16, 21, 22, 27, 28 of range 2 west and Township 57 north; and the western 3⁄4 of Sections 14, 23 and 26 of the same Township and range coordinates 06/3/13 Attainment
Remainder of AQCR 63 11/15/90 Unclassifiable
Metropolitan Boise the Intrastate AQCR 64:
Ada County: Boise - Northern Boundary - Beginning at a point in the center of the channel of the Boise River, where the line between sections 15 and 16 in Township 3 north (T3N), range 4 east (R4E), crosses said Boise river; thence, west down the center of the channel of the Boise River to a point opposite the mouth of More's Creek; thence, in a straight line north 44 degrees and 38 minutes west until the said line intersects the north line T5N (12 Ter. Ses. 67); thence west to the northwest corner T5N, R1W Western Boundary - Thence, south to the northwest corner of T3N, R1W; thence east to the northwest corner of section 4 of T3N, R1W; thence south to the southeast corner of section 32 of T2N, R1W; thence, west to the northwest corner of T1N, R1W; thence, south to the southwest corner of section 32 of T2N, R1W; thence, west to the northwest corner of T1N, R1W; thence south to the southwest corner of T1N, R1W Southern Boundary - Thence, east to the southwest corner of section 33 of T1N, R4E Eastern Boundary - Thence, north along the north and south center line of Townships T1N, R4E, T2N, R4E, and T3N, R4E, Boise Meridian to the beginning point in the center of the channel of the Boise River. 12/26/2003 Attainment
Remainder of AQCR 64 11/15/90 Unclassifiable.
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Idaho - 1997 Annual PM2.5 NAAQS

[Primary and Secondary]

Designated area Designationa Classification
Date1 Type Date Type
AQCR 61 Eastern Idaho Intrastate:
Bannock County Unclassifiable/Attainment
Bear Lake County Unclassifiable/Attainment
Bingham County Unclassifiable/Attainment
Bonneville County Unclassifiable/Attainment
Butte County Unclassifiable/Attainment
Caribou County Unclassifiable/Attainment
Clark County Unclassifiable/Attainment
Franklin County Unclassifiable/Attainment
Fremont County Unclassifiable/Attainment
Jefferson County Unclassifiable/Attainment
Madison County Unclassifiable/Attainment
Oneida County Unclassifiable/Attainment
Power County Unclassifiable/Attainment
Teton County Unclassifiable/Attainment
AQCR 62 E Washington-N Idaho Interstate:
Benewah County Unclassifiable/Attainment
Kootenai County Unclassifiable/Attainment
Latah County Unclassifiable/Attainment
Nez Perce County Unclassifiable/Attainment
Shoshone County Unclassifiable/Attainment
AQCR 63 Idaho Intrastate:
Adams County Unclassifiable/Attainment
Blaine County Unclassifiable/Attainment
Boise County Unclassifiable/Attainment
Bonner County Unclassifiable/Attainment
Boundary County Unclassifiable/Attainment
Camas County Unclassifiable/Attainment
Cassia County Unclassifiable/Attainment
Clearwater County Unclassifiable/Attainment
Custer County Unclassifiable/Attainment
Elmore County Unclassifiable/Attainment
Gem County Unclassifiable/Attainment
Gooding County Unclassifiable/Attainment
Idaho County Unclassifiable/Attainment
Jerome County Unclassifiable/Attainment
Lemhi County Unclassifiable/Attainment
Lewis County Unclassifiable/Attainment
Lincoln County Unclassifiable/Attainment
Minidoka County Unclassifiable/Attainment
Owyhee County Unclassifiable/Attainment
Payette County Unclassifiable/Attainment
Twin Falls County Unclassifiable/Attainment
Valley County Unclassifiable/Attainment
Washington County Unclassifiable/Attainment
AQCR 64 Metropolitan Boise Interstate:
Ada County Unclassifiable/Attainment
Canyon County 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.

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Idaho - 2012 Annual PM2.5 NAAQS

[Primary]

Designated area1 Designation Classification
Date2 Type Date2 Type
West Silver Valley, ID:
Shoshone County (part) 11/16/2021 Attainment
That portion of Shoshone County, which is described as follows: T50N, R02E, Sections 14, 15, 22-27, 29-36; T49N, R01E, Sections 2, 11-14, 23-26, 35, 36 and Sections 10,15, 22, 27, 34 east of Kootenai County boundary; T49N, R02E, Sections 1-36; T49N, R03E, Sections 7, 13-36; T49N, R04E, Sections 19, 30, 31; T48N, R01E, Sections 1, 2, 11-14, 22-27, 34-36 and Sections 3, 10, 15 east of Kootenai County boundary; T48N, R02E, Sections 1-36; T48N, R03E, Sections 2-10, 16-20, 30, 31; T48N, R03E, Section 1, NWNW, SWNW, NWSW, SWSW; T48N, R03E, Section 11, NW 1⁄4, NE 1⁄4, NWSW, NESW, NWSE, NESE; T48N, R03E, Section 12, NWNW, SWNW, NWSW; T47N, R01E, Sections 1-3, 10-15, 22-27; T47N, R02E, Sections 1-23, 28-30; T47N, R03E, Sections 5-8, 17, and 18
AQCR 61 Eastern Idaho Intrastate:
Bannock County Unclassifiable/Attainment
Bear Lake County Unclassifiable/Attainment
Bingham County Unclassifiable/Attainment
Bonneville County Unclassifiable/Attainment
Butte County Unclassifiable/Attainment
Caribou County Unclassifiable/Attainment
Clark County Unclassifiable/Attainment
Franklin County Unclassifiable/Attainment
Fremont County Unclassifiable/Attainment
Jefferson County Unclassifiable/Attainment
Madison County Unclassifiable/Attainment
Oneida County Unclassifiable/Attainment
Power County Unclassifiable/Attainment
Teton County Unclassifiable/Attainment
AQCR 62 E Washington-N Idaho Interstate:
Benewah County Unclassifiable/Attainment
Kootenai County Unclassifiable/Attainment
Latah County Unclassifiable/Attainment
Nez Perce County Unclassifiable/Attainment
Shoshone County (remainder) Unclassifiable/Attainment
AQCR 63 Idaho Intrastate:
Adams County Unclassifiable/Attainment
Blaine County Unclassifiable/Attainment
Boise County Unclassifiable/Attainment
Bonner County Unclassifiable/Attainment
Boundary County Unclassifiable/Attainment
Camas County Unclassifiable/Attainment
Cassia County Unclassifiable/Attainment
Clearwater County Unclassifiable/Attainment
Custer County Unclassifiable/Attainment
Elmore County Unclassifiable/Attainment
Gem County Unclassifiable/Attainment
Gooding County Unclassifiable/Attainment
Idaho County Unclassifiable/Attainment
Jerome County Unclassifiable/Attainment
Lemhi County Unclassifiable/Attainment
Lewis County Unclassifiable/Attainment
Lincoln County Unclassifiable/Attainment
Minidoka County Unclassifiable/Attainment
Owyhee County Unclassifiable/Attainment
Payette County Unclassifiable/Attainment
Twin Falls County Unclassifiable/Attainment
Valley County Unclassifiable/Attainment
Washington County Unclassifiable/Attainment
AQCR 64 Metropolitan Boise Interstate:
Ada County Unclassifiable/Attainment
Canyon County Unclassifiable/Attainment

1 Includes areas of Indian country located in each county or area, except as otherwise specified.

2 This date is April 15, 2015, unless otherwise noted.

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Idaho - 1997 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designationa Classification
Date1 Type Date Type
Logan, UT-ID:
Franklin County (part) Unclassifiable/Attainment.
Begin in the bottom left corner (southwest) of the nonattainment area boundary, southwest corner of the PLSS-Boise Meridian, Township 16 South, Range 37 East, Section 25. The boundary then proceeds north to the northwest corner of Township 15 South, Range 37 East, Section 25; then the boundary proceeds east to the southeast corner of Township 15 South, Range 38 East, Section 19; then north to the Franklin County boundary at the northwest corner of Township 13 South, Range 38 East, Section 20. From this point the boundary proceeds east 3.5 sections along the northern border of the county boundary where it then turns south 2 sections, and then proceeds east 5 more sections, and then north 2 sections more. At this point, the boundary leaves the county boundary and proceeds east at the southeast corner of Township 13 South, Range 39 East, Section 14; then the boundary heads north 2 sections to northwest corner of Township 13 South, Range 39 East, Section 12; then the boundary proceeds east 2 sections to the northeast corner of Township 13 South, Range 40 East, Section 7. The boundary then proceeds south 2 sections to the northwest corner of Township 13 South, Range 40 East, Section 20; the boundary then proceeds east 6 sections to the northeast corner of Township 13 South, Range 41 East, Section 19. The boundary then proceeds south 20 sections to the southeast corner of Township 16 South, Range 41 East, Section 30. Finally, the boundary is completed as it proceeds west 20 sections along the southern Idaho state boundary to the southwest corner of the Township 16 South, Range 37 East, Section 25.
Rest of State: AQCR 61 Eastern Idaho Intrastate:
Bannock County Unclassifiable/Attainment.
Bear Lake County Unclassifiable/Attainment.
Bingham County Unclassifiable/Attainment.
Bonneville County Unclassifiable/Attainment.
Butte County Unclassifiable/Attainment.
Caribou County Unclassifiable/Attainment.
Clark County Unclassifiable/Attainment.
Franklin County (remainder) Unclassifiable/Attainment.
Fremont County Unclassifiable/Attainment.
Jefferson County Unclassifiable/Attainment.
Madison County Unclassifiable/Attainment.
Oneida County Unclassifiable/Attainment.
Power County Unclassifiable/Attainment.
Teton County Unclassifiable/Attainment.
AQCR 62 E Washington-N Idaho Interstate:
Benewah County Unclassifiable/Attainment.
Kootenai County Unclassifiable/Attainment.
Latah County Unclassifiable/Attainment.
Nez Perce County Unclassifiable/Attainment.
Shoshone County Unclassifiable/Attainment.
AQCR 63 Idaho Intrastate:
Adams County Unclassifiable/Attainment.
Blaine County Unclassifiable/Attainment.
Boise County Unclassifiable/Attainment.
Bonner County Unclassifiable/Attainment.
Boundary County Unclassifiable/Attainment.
Camas County Unclassifiable/Attainment.
Cassia County Unclassifiable/Attainment.
Clearwater County Unclassifiable/Attainment.
Custer County Unclassifiable/Attainment.
Elmore County Unclassifiable/Attainment.
Gem County Unclassifiable/Attainment.
Gooding County Unclassifiable/Attainment.
Idaho County Unclassifiable/Attainment.
Jerome County Unclassifiable/Attainment.
Lemhi County Unclassifiable/Attainment.
Lewis County Unclassifiable/Attainment.
Lincoln County Unclassifiable/Attainment.
Minidoka County Unclassifiable/Attainment.
Owyhee County Unclassifiable/Attainment.
Payette County Unclassifiable/Attainment.
Twin Falls County Unclassifiable/Attainment.
Valley County Unclassifiable/Attainment.
Washington County Unclassifiable/Attainment.
AQCR 64 Metropolitan Boise Interstate:
Ada County Unclassifiable/Attainment.
Canyon County 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.

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Idaho - 2006 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designationa Classification
Date1 Type Date2 Type
Logan, UT-ID:
Franklin County (part) 5/21/2021 Attainment
Begin in the bottom left corner (southwest) of the nonattainment area boundary, southwest corner of the PLSS-Boise Meridian, Township 16 South, Range 37 East, Section 25. The boundary then proceeds north to the northwest corner of Township 15 South, Range 37 East, Section 25; then the boundary proceeds east to the southeast corner of Township 15 South, Range 38 East, Section 19; then north to the Franklin County boundary at the northwest corner of Township 13 South, Range 38 East, Section 20. From this point the boundary proceeds east 3.5 sections along the northern border of the county boundary where it then turns south 2 sections, and then proceeds east 5 more sections, and then north 2 sections more. At this point, the boundary leaves the county boundary and proceeds east at the southeast corner of Township 13 South, Range 39 East, Section 14; then the boundary heads north 2 sections to northwest corner of Township 13 South, Range 39 east, Section 12; then the boundary proceeds east 2 sections to the northeast corner of Township 13 South, Range 40 East, Section 7. The boundary then proceeds south 2 sections to the northwest corner of Township 13 South, Range 40 East, Section 20; the boundary then proceeds east 6 sections to the northeast corner of Township 13 South, Range 41 East, Section 19. The boundary then proceeds south 20 sections to the southeast corner of Township 16 South, Range 41 East, Section 30. Finally, the boundary is completed as it proceeds west 20 sections along the southern Idaho state boundary to the southwest corner of the Township 16 South, Range 37 East, Section 25
Rest of State: AQCR 61 Eastern Idaho Intrastate:
Bannock County Unclassifiable/Attainment.
Bear Lake County Unclassifiable/Attainment.
Bingham County Unclassifiable/Attainment.
Bonneville County Unclassifiable/Attainment.
Butte County Unclassifiable/Attainment.
Caribou County Unclassifiable/Attainment.
Clark County Unclassifiable/Attainment.
Franklin County (remainder) Unclassifiable/Attainment.
Fremont County Unclassifiable/Attainment.
Jefferson County Unclassifiable/Attainment.
Madison County Unclassifiable/Attainment.
Oneida County Unclassifiable/Attainment.
Power County Unclassifiable/Attainment.
Teton County Unclassifiable/Attainment.
AQCR 62 E Washington-N Idaho Interstate:
Benewah County Unclassifiable/Attainment.
Kootenai County Unclassifiable/Attainment.
Latah County Unclassifiable/Attainment.
Nez Perce County Unclassifiable/Attainment.
Shoshone County Unclassifiable/Attainment.
AQCR 63 Idaho Intrastate:
Adams County Unclassifiable/Attainment.
Blaine County Unclassifiable/Attainment.
Boise County Unclassifiable/Attainment.
Bonner County Unclassifiable/Attainment.
Boundary County Unclassifiable/Attainment.
Camas County Unclassifiable/Attainment.
Cassia County Unclassifiable/Attainment.
Clearwater County Unclassifiable/Attainment.
Custer County Unclassifiable/Attainment.
Elmore County Unclassifiable/Attainment.
Gem County Unclassifiable/Attainment.
Gooding County Unclassifiable/Attainment.
Idaho County Unclassifiable/Attainment.
Jerome County Unclassifiable/Attainment.
Lemhi County Unclassifiable/Attainment.
Lewis County Unclassifiable/Attainment.
Lincoln County Unclassifiable/Attainment.
Minidoka County Unclassifiable/Attainment.
Owyhee County Unclassifiable/Attainment.
Payette County Unclassifiable/Attainment.
Twin Falls County Unclassifiable/Attainment.
Valley County Unclassifiable/Attainment.
Washington County Unclassifiable/Attainment.
AQCR 64 Metropolitan Boise Interstate:
Ada County Unclassifiable/Attainment.
Canyon County Unclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 30 days after November 13, 2009, unless otherwise noted.

2 This date is July 2, 2014, unless otherwise noted.

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Idaho - NO2 (1971 Annual Standard)

Designated area Does not meet primary standards Cannot be classified or better than national standards
Eastern Idaho Intrastate AQCR 61 X
Eastern Washington-Northern Idaho Interstate AQCR 62 (Idaho Portion) X
Idaho Intrastate AQCR 63 X
Metropolitan Boise Intrastate AQCR 64 X
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Idaho - NO2

[2010 1-Hour standard]

Designated area Designationa
Date1 Type
State of Idaho Unclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is 90 days after October 31, 2011, unless otherwise noted.

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Idaho - 1997 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designationa Category/classification
Date1 Type Date1 Type
AQCR 61 Eastern Idaho Intrastate Unclassifiable/Attainment
Bannock County
Bear Lake County
Bingham County
Bonneville County
Butte County
Caribou County
Clark County
Franklin County
Fremont County
Jefferson County
Madison County
Oneida County
Power County
Teton County
AQCR 62 E Washington-N Idaho Interstate Unclassifiable/Attainment
Benewah County
Kootenai County
Latah County
Nez Perce County
Shoshone County
AQCR 63 Idaho Intrastate Unclassifiable/Attainment
Adams County
Blaine County
Boise County
Bonner County
Boundary County
Camas County
Cassia County
Clearwater County
Custer County
Elmore County
Gem County
Gooding County
Idaho County
Jerome County
Lemhi County
Lewis County
Lincoln County
Minidoka County
Owyhee County
Payette County
Twin Falls County
Valley County
Washington County
AQCR 64 Metropolitan Boise Interstate Unclassifiable/Attainment
Ada County
Canyon County

a Includes Indian Country located in each county or area, except as otherwise specified.

1 This date is June 15, 2004, unless otherwise noted.

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Idaho - 2008 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area2 Designation Classification
Date1 Type Date1 Type
Statewide and Any Areas of Indian Country Unclassifiable/Attainment

1 This date is July 20, 2012, unless otherwise noted.

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Idaho - 2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area1 Designation Classification
Date2 Type Date Type
Statewide 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 January 16, 2018, unless otherwise noted.

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Idaho - 2008 Lead NAAQS

Designated area Designation for the 2008 NAAQSa
Date1 Type
Whole State Unclassifiable/Attainment.

a Includes Indian Country located in each county or area, except as otherwise specified.

1 December 31, 2011 unless otherwise noted.

[54 FR 27344, June 29, 1989]

Editorial Note

Editorial Note:

For Federal Register citations affecting § 81.313, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.


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