Regulations last checked for updates: Feb 07, 2026

Title 40 - Protection of Environment last revised: Dec 22, 2026
All TitlesTitle 40Chapter IPart 81Subpart C - Subpart C—Section 107 Attainment Status Designations
View all text of Subpart C [§ 81.300 - § 81.356]
§ 81.338 - Oregon.

Oregon—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
Central Oregon Intrastate AQCR 190X
Eastern Oregon Intrastate AQCR 191X
Northwest Oregon Intrastate AQCR 192X
Portland Interstate AQCR 193 (Oregon Portion)X
Southwest Oregon Intrastate AQCR 194X

Oregon—2010 Sulfur Dioxide NAAQS

[Primary]

Designated area 1 Designation
Date 2 Type
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.

Oregon—Carbon Monoxide

Designated Area Designation Classification
Date 1 Type Date 1 Type
Eugene-Springfield Area
Lane County (part)1/5/1994Attainment1/5/1994
The Eugene-Springfield Area is described as: The area within the bounds beginning at the Northwest corner of T17S, R4W; extending South to the Southwest corner of Section 6, T17S, R4W; thence East to the Northwest corner of Section 8, T17S, R4W; thence South to the Southwest corner of Section 32, T17S, R4W; thence East to the Northeast corner of Section 4, T18S, R4W; thence South to the Southwest corner of Section 3, T18S, R4W; thence East to the Northwest corner Section 12, T18S, R4W; thence South to the Southwest corner of Section 13, T18S, R4W; thence East to the Northeast corner of Section 24, T18S, R4W; thence South to the Southeast corner of Section 24, T18S, R4W; thence East to the Northeast corner of Section 21, T18S, R3W; thence North to the Northeast corner of Section 21, T18S, R3W; thence East to the Northeast corner of Section 22, T18S, R3W; thence South to the Southwest corner of Section 23, T18S, R3W; thence East to the Southeast corner of Section 24, T18S, R3W; thence North to the Southeast corner of Section 1, T18S, R3W; thence East to the Southeast corner of Section 2, T18S, R2W; thence North to the Northeast corner of Section 26, T17S, R2W; thence West to the Southwest corner of Section 20, T17S, R2W; thence North to the Northwest corner of Section 20, T17S, R2W; thence West to the Southwest corner of Section 13, T17S, R3W; thence North to the Northwest corner of Section 13, T17S, R3W; thence West to the Southwest corner of Section 11, T17S, R3W; thence North to the Northwest corner of Section 11, T17S, R3W; thence West to the Southwest corner of Section 6, T17S, R3W; thence North to the Northwest corner of Section 31, T16S, R3W; thence West to the Northwest corner of Section 34, T16S, R4W; thence South to the Southwest corner of Section 34, T16S, R4W; thence West to the point of beginning
Grants Pass Area:
Josephine County (part) Central Business District10/30/2000Attainment
Klamath Falls Area
Klamath County (part)11/9/2001Attainment
Urban Growth Boundary
Medford Area
Jackson County (part)9/23/2002Attainment
Medford Urban Growth Boundary
Portland Area
Portland Metro Service District Boundary
Clackamas County (part)Attainment
Multnomah County (part)Attainment
Washington County (part)Attainment
Salem Area:
Salem Area Transportation Study
Marion County (part)3/2/2009
Polk County (part)3/2/2009
AQCR 190 Remainder of Central Oregon IntrastateUnclassifiable/Attainment
Crook County
Deschutes County
Hood River County
Jefferson County
Klamath County (part)
area outside Urban Growth Boundary
Lake County
Sherman County
Wasco County
AQCR 191 Eastern Oregon IntrastateUnclassifiable/Attainment
Baker County
Gilliam County
Grant County
Harney County
Malheur County
Morrow County
Umatilla County
Union County
Wallowa County
Wheeler County
AQCR 192 Northwest Oregon IntrastateUnclassifiable/Attainment
Clatsop County
Lincoln County
Tillamook County
AQCR 193 Remainder of Portland InterstateUnclassifiable/Attainment
Benton County
Clackamas County (part)
area outside Portland Metro Service District Boundary
Columbia County
Lane County (part)
area outside of Air Quality Maintenance area
Linn County
Marion County (part)
area outside the city of Salem
Multnomah County (part)
area outside Portand Metro Service District Boundary
Polk County (part)
area outside of Salem
Washington County (part)
area outside Portland Metro Service District Boundary
Yamhill County
AQCR 194 Remainder of Southwest OregonUnclassifiable/Attainment
Coos County
Curry County
Douglas County
Jackson County (part)
area outside Medford Urban growth boundary
Josephine County (part)
area outside of Central Business District

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

Oregon—Ozone (1-Hour Standard) 3

Designated area Designation Classification
Date 1 Type Date 1 Type
Portland-Vancouver AQMA Area:Attainment
Air Quality Maintenance Area
Clackamas County (part)
Multnomah County (part)
Washington County (part)
Salem Area:
Salem Area Transportation Study
Marion County (part)( 2)Nonattainment( 2)Incomplete Data.
Polk County( 2)Nonattainment( 2)Incomplete Data.
AQCR 190 Central Oregon Intrastate (Remainder of)Unclassifiable/Attainment
Crook County
Deschutes County
Hood River County
Jefferson County
Klamath County
Lake County
Sherman County
Wasco County
AQCR 191 Eastern Oregon IntrastateUnclassifiable/Attainment
Baker County
Gilliam County
Grant County
Harney County
Malheur County
Morrow County
Umatilla County
Union County
Wallowa County
Wheeler County
AQCR 192 Northwest Oregon IntrastateUnclassifiable/Attainment
Clatsop County
Lincoln County
Tillamook County
AQCR 193 Portland Interstate (part)Unclassifiable/Attainment
Lane County (part) Eugene Springfield Air Quality Maintenance Area
AQCR 193 Portland Interstate (Remainder of)Unclassifiable/Attainment
Benton County
Clackamas County (part) Remainder of county
Columbia County
Lane County (part) Remainder of county
Linn County
Marion County (part) area outside the Salem Area Transportation Study
Multnomah County (part) Remainder of county
Polk County (part) area outside the Salem Area Transportation Study
Washington County (part) Remainder of county
Yamhill County
AQCR 194 Southwest Oregon Intrastate (part)
Jackson County (part)
Medford-Ashland Air Quality Maintenance AreaUnclassifiable/Attainment
AQCR 194 Southwest Oregon Intrastate (Remainder of)Unclassifiable/Attainment
Coos County
Curry County
Douglas County
Jackson County (part) Remainder of county
Josephine 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 Oregon. Portland-Vancouver AQMA is a maintenance area for the 1-hour NAAQS for purposes of 40 CFR part 51 subpart X.

Oregon—PM-10

Designated Area Designation Classification
Date Type Date Type
Central Oregon Intrastate AQCR 190:
Lakeview (the Urban Growth Boundary area)7/19/2006Attainment
Klamath Falls (the Urban Growth Boundary area)12/22/2003Attainment
Remainder of AQCR 19011/15/1990Unclassifiable
Eastern Oregon Intrastate AQCR 191:
La Grande (the Urban Growth Boundary area)7/19/2006Attainment
Remainder of AQCR 19111/15/1990Unclassifiable
Northwest Oregon Intrastate AQCR 19211/15/1990Unclassifiable
Portland Interstate AQCR 193 (Oregon Portion):
Portland-Vancouver (portion of the Air Quality Maintenance Area)11/15/1990Unclassifiable
Eugene/Springfield (the Urban Growth Boundary area)6/10/2013Attainment
Oakridge (the Urban Growth Boundary area)8/22/2022Attainment
Remainder of AQCR 193 (Oregon Portion)11/15/1990Unclassifiable
Southwest Oregon Intrastate AQCR 194:
Medford Air Quality Maintenance Area (including White City)8/18/2006Attainment
Grants Pass (the Urban Growth Boundary area)12/26/2003Attainment
Remainder of AQCR 19411/15/1990Unclassifiable

Oregon—1997 Annual PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation a Classification
Date 1 Type Date Type
Portland-Vancouver AQMA: (Air Quality Maintenance Area):
Clackamas County (part)Unclassifiable/Attainment.
Multnomah County (part)Unclassifiable/Attainment.
Washington County (part)Unclassifiable/Attainment.
Salem Area: (Salem Area Transportation Study):
Marion County (part)Unclassifiable/Attainment.
Polk CountyUnclassifiable/Attainment.
AQCR 190 Central Oregon Intrastate (remainder of):
Crook CountyUnclassifiable/Attainment.
Deschutes CountyUnclassifiable/Attainment.
Hood River CountyUnclassifiable/Attainment.
Jefferson CountyUnclassifiable/Attainment.
Klamath CountyUnclassifiable/Attainment.
Lake CountyUnclassifiable/Attainment.
Sherman CountyUnclassifiable/Attainment.
Wasco CountyUnclassifiable/Attainment.
AQCR 191 Eastern Oregon Intrastate:
Baker CountyUnclassifiable/Attainment.
Gilliam CountyUnclassifiable/Attainment.
Grant CountyUnclassifiable/Attainment.
Harney CountyUnclassifiable/Attainment.
Malheur CountyUnclassifiable/Attainment.
Morrow CountyUnclassifiable/Attainment.
Umatilla CountyUnclassifiable/Attainment.
Union CountyUnclassifiable/Attainment.
Wallowa CountyUnclassifiable/Attainment.
Wheeler CountyUnclassifiable/Attainment.
AQCR 192 Northwest Oregon Intrastate:
Clatsop CountyUnclassifiable/Attainment.
Lincoln CountyUnclassifiable/Attainment.
Tillamook CountyUnclassifiable/Attainment.
AQCR 193 Portland Interstate (part):
Lane County (part)Unclassifiable/Attainment.
Eugene Springfield Air Quality Maintenance Area
AQCR 193 Portland Interstate (remainder of):
Benton CountyUnclassifiable/Attainment.
Clackamas County (remainder)Unclassifiable/Attainment.
Columbia CountyUnclassifiable/Attainment.
Lane County (remainder)Unclassifiable/Attainment.
Linn CountyUnclassifiable/Attainment.
Marion County (part)Unclassifiable/Attainment.
The area outside the Salem Area Transportation Study
Multnomah County (remainder)Unclassifiable/Attainment.
Polk County (part)Unclassifiable/Attainment.
The area outside the Salem Area Transportation Study
Washington County (remainder)Unclassifiable/Attainment.
Yamhill CountyUnclassifiable/Attainment.
AQCR 194 Southwest Oregon Intrastate (part):
Jackson County (part)Unclassifiable/Attainment.
Medford-Ashland Air Quality Maintenance Area
AQCR 194 Southwest Oregon Intrastate (remainder of):
Coos CountyUnclassifiable/Attainment.
Curry CountyUnclassifiable/Attainment.
Douglas CountyUnclassifiable/Attainment.
Jackson County (remainder)Unclassifiable/Attainment.
Josephine 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.

Oregon—2012 Annual PM2.5 NAAQS

[Primary]

Designated area 1 Designation Classification
Date 2 Type Date 2 Type
AQCR 190 Central Oregon Intrastate
Crook CountyUnclassifiable/Attainment
Deschutes CountyUnclassifiable/Attainment
Hood River CountyUnclassifiable/Attainment
Jefferson CountyUnclassifiable/Attainment
Klamath CountyUnclassifiable/Attainment
Lake CountyUnclassifiable/Attainment
Sherman CountyUnclassifiable/Attainment
Wasco CountyUnclassifiable/Attainment
AQCR 191 Eastern Oregon Intrastate
Baker CountyUnclassifiable/Attainment
Gilliam CountyUnclassifiable/Attainment
Grant CountyUnclassifiable/Attainment
Harney CountyUnclassifiable/Attainment
Malheur CountyUnclassifiable/Attainment
Morrow CountyUnclassifiable/Attainment
Umatilla CountyUnclassifiable/Attainment
Union CountyUnclassifiable/Attainment
Wallowa CountyUnclassifiable/Attainment
Wheeler CountyUnclassifiable/Attainment
AQCR 192 Northwest Oregon Intrastate
Clatsop CountyUnclassifiable/Attainment
Lincoln CountyUnclassifiable/Attainment
Tillamook CountyUnclassifiable/Attainment
AQCR 193 Portland Interstate (Oregon Portion)
Benton CountyUnclassifiable/Attainment
Clackamas CountyUnclassifiable/Attainment
Columbia CountyUnclassifiable/Attainment
Lane CountyUnclassifiable/Attainment
Linn CountyUnclassifiable/Attainment
Marion CountyUnclassifiable/Attainment
Multnomah CountyUnclassifiable/Attainment
Polk CountyUnclassifiable/Attainment
Washington CountyUnclassifiable/Attainment
Yamhill CountyUnclassifiable/Attainment
AQCR 194 Southwest Oregon Intrastate
Coos CountyUnclassifiable/Attainment
Curry CountyUnclassifiable/Attainment
Douglas CountyUnclassifiable/Attainment
Jackson CountyUnclassifiable/Attainment
Josephine 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.

Oregon—1997 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation a Classification
Date 1 Type Date Type
Klamath Falls, OR:
Klamath County (part)Unclassifiable/Attainment.
Townships and ranges defined by T37S R9E Sections 31-32. T38S R8E Sections 1-5, 8-16, 22-26, 35-36. T38S R9E Sections 5-8, 14-15, 17-36. T39S R8E Sections 1-2, 11-13, 24. T39S R9E Sections 1-27. T39S R10E Sections 3-10, 15-20, 29-30.
Oakridge, OR:
Lane County (part)Unclassifiable/Attainment.
Boundary is defined as a line from Township 21 South, Range 2 East, Section 11 (northwest corner) east to Township 21 South, Range 3 East, Section 11 (northeast corner), south to Township 21 South, Range 3 East, Section 23 (southeast corner), west to Township 21 South, Range 2 East, Section 23 (southwest corner) connecting back to Township 21 South, Range 2 East, Section 11 (northwest corner).
Rest of State:
Portland-Vancouver AQMA: (Air Quality Maintenance Area)
Clackamas County (part)Unclassifiable/Attainment.
Multnomah County (part)Unclassifiable/Attainment.
Washington County (part)Unclassifiable/Attainment.
Salem Area: (Salem Area Transportation Study):
Marion County (part)Unclassifiable/Attainment.
Polk CountyUnclassifiable/Attainment.
AQCR 190 Central Oregon Intrastate:
Crook CountyUnclassifiable/Attainment.
Deschutes CountyUnclassifiable/Attainment.
Hood River CountyUnclassifiable/Attainment.
Jefferson CountyUnclassifiable/Attainment.
Klamath County (remainder)Unclassifiable/Attainment.
Lake CountyUnclassifiable/Attainment.
Sherman CountyUnclassifiable/Attainment.
Wasco CountyUnclassifiable/Attainment.
AQCR 191 Eastern Oregon Intrastate:
Baker CountyUnclassifiable/Attainment.
Gilliam CountyUnclassifiable/Attainment.
Grant CountyUnclassifiable/Attainment.
Harney CountyUnclassifiable/Attainment.
Malheur CountyUnclassifiable/Attainment.
Morrow CountyUnclassifiable/Attainment.
Umatilla CountyUnclassifiable/Attainment.
Union CountyUnclassifiable/Attainment.
Wallowa CountyUnclassifiable/Attainment.
Wheeler CountyUnclassifiable/Attainment.
AQCR 192 Northwest Oregon Intrastate:
Clatsop CountyUnclassifiable/Attainment.
Lincoln CountyUnclassifiable/Attainment.
Tillamook CountyUnclassifiable/Attainment.
AQCR 193 Portland Interstate (part):
Lane County (part)Unclassifiable/Attainment.
Eugene Springfield Air Quality Maintenance AQCR 193 Portland Interstate:
Benton CountyUnclassifiable/Attainment.
Clackamas County (remainder)Unclassifiable/Attainment.
Columbia CountyUnclassifiable/Attainment.
Lane County (remainder)Unclassifiable/Attainment.
Linn CountyUnclassifiable/Attainment.
Marion County (part)Unclassifiable/Attainment.
The area outside the Salem Area Transportation Study:
Multnomah County (remainder)Unclassifiable/Attainment.
Polk County (part)Unclassifiable/Attainment.
The area outside the Salem Area Transportation Study:
Washington County (remainder)Unclassifiable/Attainment.
Yamhill CountyUnclassifiable/Attainment.
AQCR 194 Southwest Oregon Intrastate (part):
Jackson County (part)Unclassifiable/Attainment.
Medford-Ashland Air Quality Maintenance Area AQCR 194 Southwest Oregon Intrastate: (remainder of):
Coos CountyUnclassifiable/Attainment.
Curry CountyUnclassifiable/Attainment.
Douglas CountyUnclassifiable/Attainment.
Jackson County (remainder)Unclassifiable/Attainment.
Josephine 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.

Oregon—2006 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Designated area Designation a Classification
Date 1 Type Date 2 Type
Klamath Falls, OR:
Klamath County (part)NonattainmentModerate.
Townships and ranges defined by T37S R9E Sections 31-32. T38S R8E Sections 1-5, 8-16, 22-26, 35-36. T38S R9E Sections 5-8, 14-15, 17-36. T39S R8E Sections 1-2, 11-13, 24. T39S R9E Sections 1-27. T39S R10E Sections 3-10, 15-20, 29-30.
Oakridge, OR:
Lane County (part)8/22/2022Attainment
Boundary is defined as a line from Township 21 South, Range 2 East, Section 11 (northwest corner) east to Township 21 South, Range 3 East, Section 11 (northeast corner), south to Township 21 South, Range 3 East, Section 23 (southeast corner), west to Township 21 South, Range 2 East, Section 23 (southwest corner) connecting back to Township 21 South, Range 2 East, Section 11 (northwest corner).
Rest of State:
Portland-Vancouver AQMA: (Air Quality Maintenance Area)
Clackamas County (part)Unclassifiable/Attainment.
Multnomah County (part)Unclassifiable/Attainment.
Washington County (part)Unclassifiable/Attainment.
Salem Area: (Salem Area Transportation Study):
Marion County (part)Unclassifiable/Attainment.
Polk CountyUnclassifiable/Attainment.
AQCR 190 Central Oregon Intrastate:
Crook CountyUnclassifiable/Attainment.
Deschutes CountyUnclassifiable/Attainment.
Hood River CountyUnclassifiable/Attainment.
Jefferson CountyUnclassifiable/Attainment.
Klamath County (remainder)Unclassifiable/Attainment.
Lake CountyUnclassifiable/Attainment.
Sherman CountyUnclassifiable/Attainment.
Wasco CountyUnclassifiable/Attainment.
AQCR 191 Eastern Oregon Intrastate:
Baker CountyUnclassifiable/Attainment.
Gilliam CountyUnclassifiable/Attainment.
Grant CountyUnclassifiable/Attainment.
Harney CountyUnclassifiable/Attainment.
Malheur CountyUnclassifiable/Attainment.
Morrow CountyUnclassifiable/Attainment.
Umatilla CountyUnclassifiable/Attainment.
Union CountyUnclassifiable/Attainment.
Wallowa CountyUnclassifiable/Attainment.
Wheeler CountyUnclassifiable/Attainment.
AQCR 192 Northwest Oregon Intrastate:
Clatsop CountyUnclassifiable/Attainment.
Lincoln CountyUnclassifiable/Attainment.
Tillamook CountyUnclassifiable/Attainment.
AQCR 193 Portland Interstate (part):
Lane County (part)Unclassifiable/Attainment.
Eugene Springfield Air Quality Maintenance AQCR 193 Portland Interstate:
Benton CountyUnclassifiable/Attainment.
Clackamas County (remainder)Unclassifiable/Attainment.
Columbia CountyUnclassifiable/Attainment.
Lane County (remainder)Unclassifiable/Attainment.
Linn CountyUnclassifiable/Attainment.
Marion County (part)Unclassifiable/Attainment.
The area outside the Salem Area Transportation Study:
Multnomah County (remainder)Unclassifiable/Attainment.
Polk County (part)Unclassifiable/Attainment.
The area outside the Salem Area Transportation Study:
Washington County (remainder)Unclassifiable/Attainment.
Yamhill CountyUnclassifiable/Attainment.
AQCR 194 Southwest Oregon Intrastate (part):
Jackson County (part)Unclassifiable/Attainment.
Medford-Ashland Air Quality Maintenance Area AQCR 194 Southwest Oregon Intrastate: (remainder of):
Coos CountyUnclassifiable/Attainment.
Curry CountyUnclassifiable/Attainment.
Douglas CountyUnclassifiable/Attainment.
Jackson County (remainder)Unclassifiable/Attainment.
Josephine CountyUnclassifiable/Attainment.

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

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

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

Oregon—NO2 (1971 Annual Standard)

Designated area Does not meet primary standards Cannot be classified or better than national standards
Central Oregon Intrastate AQCR 190X
Eastern Oregon Intrastate AQCR 191X
Northwest Oregon Intrastate AQCR 192X
Portland Interstate AQCR 193 (Oregon Portion)X
Southwest Oregon Intrastate AQCR 194X

Oregon—NO2

[2010 1-Hour standard]

Designated area Designation a
Date 1 Type
StatewideUnclassifiable/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.

Oregon—1997 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area Designation area a Category/classification
Date 1 Type Date 1 Type
Portland-Vancouver AQMA: (Air Quality Maintenance Area)Unclassifiable/Attainment
Clackamas County (part)
Multnomah County (part)
Washington County (part)
Salem Area: (Salem Area Transportation Study)
Marion County (part)Unclassifiable/Attainment
Polk CountyUnclassifiable/Attainment
AQCR 190 Central Oregon Intrastate (remainder of)Unclassifiable/Attainment
Crook County
Deschutes County
Hood River County
Jefferson County
Klamath County
Lake County
Sherman County
Wasco County
AQCR 191 Eastern Oregon IntrastateUnclassifiable/Attainment
Baker County
Gilliam County
Grant County
Harney County
Malheur County
Morrow County
Umatilla County
Union County
Wallowa County
Wheeler County
AQCR 192 Northwest Oregon IntrastateUnclassifiable/Attainment
Clatsop County
Lincoln County
Tillamook County
AQCR 193 Portland Interstate (part)Unclassifiable/Attainment
Lane County (part) Eugene Springfield Air Quality Maintenance Area
AQCR 193 Portland Interstate (remainder of)Unclassifiable/Attainment
Benton County
Clackamas County (part) remainder
Columbia County
Lane County (part) remainder
Linn County
Marion County (part) The area outside the Salem Area Transportation Study
Multnomah County (part) remainder
Polk County (part) The area outside the Salem Area Transportation Study
Washington County (part) remainder
Yamhill County
AQCR 194 Southwest Oregon Intrastate (part)
Jackson County (part) Medford-Ashland Air Quality Maintenance AreaUnclassifiable/Attainment
AQCR 194 Southwest Oregon Intrastate (remainder of)Unclassifiable/Attainment
Coos County
Curry County
Douglas County
Jackson County (part) remainder
Josephine 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.

Oregon—2008 8-Hour Ozone NAAQS

[Primary and Secondary]

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

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

Oregon—2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Designated area 1 Designation Classification
Date 2 Type Date 2 Type
Baker County1/16/2018Attainment/Unclassifiable
Benton CountyAttainment/Unclassifiable
Clackamas CountyAttainment/Unclassifiable
Clatsop County1/16/2018Attainment/Unclassifiable
Columbia CountyAttainment/Unclassifiable
Coos County1/16/2018Attainment/Unclassifiable
Crook County1/16/2018Attainment/Unclassifiable
Curry County1/16/2018Attainment/Unclassifiable
Deschutes County1/16/2018Attainment/Unclassifiable
Douglas County1/16/2018Attainment/Unclassifiable
Gilliam County1/16/2018Attainment/Unclassifiable
Grant County1/16/2018Attainment/Unclassifiable
Harney County1/16/2018Attainment/Unclassifiable
Hood River County1/16/2018Attainment/Unclassifiable
Jackson County1/16/2018Attainment/Unclassifiable
Jefferson County1/16/2018Attainment/Unclassifiable
Josephine County1/16/2018Attainment/Unclassifiable
Klamath County1/16/2018Attainment/Unclassifiable
Lake County1/16/2018Attainment/Unclassifiable
Lane County1/16/2018Attainment/Unclassifiable
Lincoln County1/16/2018Attainment/Unclassifiable
Linn CountyAttainment/Unclassifiable
Malheur County1/16/2018Attainment/Unclassifiable
Marion CountyAttainment/Unclassifiable
Morrow County1/16/2018Attainment/Unclassifiable
Multnomah CountyAttainment/Unclassifiable
Polk CountyAttainment/Unclassifiable
Sherman County1/16/2018Attainment/Unclassifiable
Tillamook County1/16/2018Attainment/Unclassifiable
Umatilla County1/16/2018Attainment/Unclassifiable
Union County1/16/2018Attainment/Unclassifiable
Wallowa County1/16/2018Attainment/Unclassifiable
Wasco County1/16/2018Attainment/Unclassifiable
Washington CountyAttainment/Unclassifiable
Wheeler County1/16/2018Attainment/Unclassifiable
Yamhill CountyAttainment/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 August 3, 2018, unless otherwise noted.

Oregon—2008 Lead NAAQS

Designated area Designation for the 2008 NAAQS a
Date 1 Type
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 27345, June 29, 1989] Editorial Note:For Federal Register citations affecting § 81.338, 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 81.338
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