1. Regulations
  2. title 40
  3. chapter I-i19
  4. part 81
  5. subpart C
  6. § 81.313

View all text of Subpart C [§ 81.300 - § 81.356]

§ 81.313 - Idaho.

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

Idaho—2010 Sulfur Dioxide NAAQS

[Primary]

Designated area 1Designation Date 2Type Entire StateAttainment/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.

Idaho—Carbon Monoxide

Designated Area Designation Classification Date 1Type Date 1Type 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 beginning12/27/02Attainment. AQCR 61 Eastern Idaho IntrastateUnclassifiable/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 InterstateUnclassifiable/Attainment Benewah County Kootenai County Latah County Nez Perce County Shoshone County AQCR 63 Idaho IntrastateUnclassifiable/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.

Idaho—Ozone (1-Hour Standard) 2

Designated area Designation Classification Date 1Type Date 1Type AQCR 61 Eastern Idaho IntrastateUnclassifiable/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 InterstateUnclassifiable/Attainment Benewah County Kootenai County Latah County Nez Perce County Shoshone County AQCR 63 Idaho IntrastateUnclassifiable/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 InterstateUnclassifiable/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.

Idaho PM-10

Designated area Designation Classification Date Type Date Type Eastern Idaho IntraState AQCR 61:08/14/06Attainment. 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)11/15/90Nonattainment11/15/90Moderate 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 areas11/15/90Unclassifiable Soda Springs: 96 square mile area encompassing Soda Springs, Conda and the industrial area in between11/15/90Unclassifiable Remainder of AQCR 6111/15/90Unclassifiable 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”)10/11/18Attainment City of Pinehurst10/11/18Attainment 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 coordinates06/3/13Attainment Remainder of AQCR 6311/15/90Unclassifiable 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.12/26/2003Attainment Remainder of AQCR 6411/15/90Unclassifiable.

Idaho—1997 Annual PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation aClassification Date 1Type Date Type AQCR 61 Eastern Idaho Intrastate: Bannock CountyUnclassifiable/Attainment Bear Lake CountyUnclassifiable/Attainment Bingham CountyUnclassifiable/Attainment Bonneville CountyUnclassifiable/Attainment Butte CountyUnclassifiable/Attainment Caribou CountyUnclassifiable/Attainment Clark CountyUnclassifiable/Attainment Franklin CountyUnclassifiable/Attainment Fremont CountyUnclassifiable/Attainment Jefferson CountyUnclassifiable/Attainment Madison CountyUnclassifiable/Attainment Oneida CountyUnclassifiable/Attainment Power CountyUnclassifiable/Attainment Teton CountyUnclassifiable/Attainment AQCR 62 E Washington-N Idaho Interstate: Benewah CountyUnclassifiable/Attainment Kootenai CountyUnclassifiable/Attainment Latah CountyUnclassifiable/Attainment Nez Perce CountyUnclassifiable/Attainment Shoshone CountyUnclassifiable/Attainment AQCR 63 Idaho Intrastate: Adams CountyUnclassifiable/Attainment Blaine CountyUnclassifiable/Attainment Boise CountyUnclassifiable/Attainment Bonner CountyUnclassifiable/Attainment Boundary CountyUnclassifiable/Attainment Camas CountyUnclassifiable/Attainment Cassia CountyUnclassifiable/Attainment Clearwater CountyUnclassifiable/Attainment Custer CountyUnclassifiable/Attainment Elmore CountyUnclassifiable/Attainment Gem CountyUnclassifiable/Attainment Gooding CountyUnclassifiable/Attainment Idaho CountyUnclassifiable/Attainment Jerome CountyUnclassifiable/Attainment Lemhi CountyUnclassifiable/Attainment Lewis CountyUnclassifiable/Attainment Lincoln CountyUnclassifiable/Attainment Minidoka CountyUnclassifiable/Attainment Owyhee CountyUnclassifiable/Attainment Payette CountyUnclassifiable/Attainment Twin Falls CountyUnclassifiable/Attainment Valley CountyUnclassifiable/Attainment Washington CountyUnclassifiable/Attainment AQCR 64 Metropolitan Boise Interstate: Ada CountyUnclassifiable/Attainment Canyon CountyUnclassifiable/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.

Idaho—2012 Annual PM2.5 NAAQS

[Primary]

Designated area 1Designation Classification Date 2Type Date 2Type West Silver Valley, ID: Shoshone County (part)11/16/2021Attainment 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 CountyUnclassifiable/Attainment Bear Lake CountyUnclassifiable/Attainment Bingham CountyUnclassifiable/Attainment Bonneville CountyUnclassifiable/Attainment Butte CountyUnclassifiable/Attainment Caribou CountyUnclassifiable/Attainment Clark CountyUnclassifiable/Attainment Franklin CountyUnclassifiable/Attainment Fremont CountyUnclassifiable/Attainment Jefferson CountyUnclassifiable/Attainment Madison CountyUnclassifiable/Attainment Oneida CountyUnclassifiable/Attainment Power CountyUnclassifiable/Attainment Teton CountyUnclassifiable/Attainment AQCR 62 E Washington-N Idaho Interstate: Benewah CountyUnclassifiable/Attainment Kootenai CountyUnclassifiable/Attainment Latah CountyUnclassifiable/Attainment Nez Perce CountyUnclassifiable/Attainment Shoshone County (remainder)Unclassifiable/Attainment AQCR 63 Idaho Intrastate: Adams CountyUnclassifiable/Attainment Blaine CountyUnclassifiable/Attainment Boise CountyUnclassifiable/Attainment Bonner CountyUnclassifiable/Attainment Boundary CountyUnclassifiable/Attainment Camas CountyUnclassifiable/Attainment Cassia CountyUnclassifiable/Attainment Clearwater CountyUnclassifiable/Attainment Custer CountyUnclassifiable/Attainment Elmore CountyUnclassifiable/Attainment Gem CountyUnclassifiable/Attainment Gooding CountyUnclassifiable/Attainment Idaho CountyUnclassifiable/Attainment Jerome CountyUnclassifiable/Attainment Lemhi CountyUnclassifiable/Attainment Lewis CountyUnclassifiable/Attainment Lincoln CountyUnclassifiable/Attainment Minidoka CountyUnclassifiable/Attainment Owyhee CountyUnclassifiable/Attainment Payette CountyUnclassifiable/Attainment Twin Falls CountyUnclassifiable/Attainment Valley CountyUnclassifiable/Attainment Washington CountyUnclassifiable/Attainment AQCR 64 Metropolitan Boise Interstate: Ada CountyUnclassifiable/Attainment Canyon CountyUnclassifiable/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.

Idaho—1997 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation aClassification Date 1Type 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 CountyUnclassifiable/Attainment. Bear Lake CountyUnclassifiable/Attainment. Bingham CountyUnclassifiable/Attainment. Bonneville CountyUnclassifiable/Attainment. Butte CountyUnclassifiable/Attainment. Caribou CountyUnclassifiable/Attainment. Clark CountyUnclassifiable/Attainment. Franklin County (remainder)Unclassifiable/Attainment. Fremont CountyUnclassifiable/Attainment. Jefferson CountyUnclassifiable/Attainment. Madison CountyUnclassifiable/Attainment. Oneida CountyUnclassifiable/Attainment. Power CountyUnclassifiable/Attainment. Teton CountyUnclassifiable/Attainment. AQCR 62 E Washington-N Idaho Interstate: Benewah CountyUnclassifiable/Attainment. Kootenai CountyUnclassifiable/Attainment. Latah CountyUnclassifiable/Attainment. Nez Perce CountyUnclassifiable/Attainment. Shoshone CountyUnclassifiable/Attainment. AQCR 63 Idaho Intrastate: Adams CountyUnclassifiable/Attainment. Blaine CountyUnclassifiable/Attainment. Boise CountyUnclassifiable/Attainment. Bonner CountyUnclassifiable/Attainment. Boundary CountyUnclassifiable/Attainment. Camas CountyUnclassifiable/Attainment. Cassia CountyUnclassifiable/Attainment. Clearwater CountyUnclassifiable/Attainment. Custer CountyUnclassifiable/Attainment. Elmore CountyUnclassifiable/Attainment. Gem CountyUnclassifiable/Attainment. Gooding CountyUnclassifiable/Attainment. Idaho CountyUnclassifiable/Attainment. Jerome CountyUnclassifiable/Attainment. Lemhi CountyUnclassifiable/Attainment. Lewis CountyUnclassifiable/Attainment. Lincoln CountyUnclassifiable/Attainment. Minidoka CountyUnclassifiable/Attainment. Owyhee CountyUnclassifiable/Attainment. Payette CountyUnclassifiable/Attainment. Twin Falls CountyUnclassifiable/Attainment. Valley CountyUnclassifiable/Attainment. Washington CountyUnclassifiable/Attainment. AQCR 64 Metropolitan Boise Interstate: Ada CountyUnclassifiable/Attainment. Canyon CountyUnclassifiable/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.

Idaho—2006 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation aClassification Date 1Type Date 2Type Logan, UT-ID: Franklin County (part)5/21/2021Attainment 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 CountyUnclassifiable/Attainment. Bear Lake CountyUnclassifiable/Attainment. Bingham CountyUnclassifiable/Attainment. Bonneville CountyUnclassifiable/Attainment. Butte CountyUnclassifiable/Attainment. Caribou CountyUnclassifiable/Attainment. Clark CountyUnclassifiable/Attainment. Franklin County (remainder)Unclassifiable/Attainment. Fremont CountyUnclassifiable/Attainment. Jefferson CountyUnclassifiable/Attainment. Madison CountyUnclassifiable/Attainment. Oneida CountyUnclassifiable/Attainment. Power CountyUnclassifiable/Attainment. Teton CountyUnclassifiable/Attainment. AQCR 62 E Washington-N Idaho Interstate: Benewah CountyUnclassifiable/Attainment. Kootenai CountyUnclassifiable/Attainment. Latah CountyUnclassifiable/Attainment. Nez Perce CountyUnclassifiable/Attainment. Shoshone CountyUnclassifiable/Attainment. AQCR 63 Idaho Intrastate: Adams CountyUnclassifiable/Attainment. Blaine CountyUnclassifiable/Attainment. Boise CountyUnclassifiable/Attainment. Bonner CountyUnclassifiable/Attainment. Boundary CountyUnclassifiable/Attainment. Camas CountyUnclassifiable/Attainment. Cassia CountyUnclassifiable/Attainment. Clearwater CountyUnclassifiable/Attainment. Custer CountyUnclassifiable/Attainment. Elmore CountyUnclassifiable/Attainment. Gem CountyUnclassifiable/Attainment. Gooding CountyUnclassifiable/Attainment. Idaho CountyUnclassifiable/Attainment. Jerome CountyUnclassifiable/Attainment. Lemhi CountyUnclassifiable/Attainment. Lewis CountyUnclassifiable/Attainment. Lincoln CountyUnclassifiable/Attainment. Minidoka CountyUnclassifiable/Attainment. Owyhee CountyUnclassifiable/Attainment. Payette CountyUnclassifiable/Attainment. Twin Falls CountyUnclassifiable/Attainment. Valley CountyUnclassifiable/Attainment. Washington CountyUnclassifiable/Attainment. AQCR 64 Metropolitan Boise Interstate: Ada CountyUnclassifiable/Attainment. Canyon CountyUnclassifiable/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.

Idaho—NO2 (1971 Annual Standard)

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

Idaho—NO2

[2010 1-Hour standard]

Designated area Designation aDate 1Type State of IdahoUnclassifiable/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.

Idaho—1997 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation aCategory/classification Date 1Type Date 1Type AQCR 61 Eastern Idaho IntrastateUnclassifiable/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 InterstateUnclassifiable/Attainment Benewah County Kootenai County Latah County Nez Perce County Shoshone County AQCR 63 Idaho IntrastateUnclassifiable/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 InterstateUnclassifiable/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.

Idaho—2008 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area 2Designation Classification Date 1Type Date 1Type Statewide and Any Areas of Indian CountryUnclassifiable/Attainment

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

Idaho—2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area 1Designation Classification Date 2Type Date Type StatewideAttainment/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.

Idaho—2008 Lead NAAQS

Designated area Designation for the 2008 NAAQS aDate 1Type Whole StateUnclassifiable/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: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.

AUTHORITY: 42 U.S.C. 7401,

SOURCE: 36 FR 22421, Nov. 25, 1971, unless otherwise noted.

CITE AS: 40 CFR 81.313