Washington—TSP

Open Table
Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
Eastern Washington-Northern Idaho Interstate AQCR 62 (Washington Portion):
Spokane X
Clarkston X
Remainder of AQCR 62 (Washington Portion) X
Portland Interstate AQCR 193 (Washington Portion):
Longview—industrial area X
Vancouver—small portions of the industrial port area X
Remainder of AQCR 193 (Washington Portion) X
Northern Washington Intrastate AQCR 227 X
Olympic-Northwest Washington Intrastate AQCR 228:
Port Angeles—small area of the CBD X
Remainder of AQCR 228 X
Puget Sound Intrastate AQCR 229 Seattle—that area including the north portion of the Duwamish industrial area, and extending to the southern boundary of the CBD X
Seattle—an area of the Duwamish extending approximately 212 miles further south than the above area X
Renton X
Kent X
Tacoma—that area, including the Tide Flats industrial area, east end of the CBD and the north end of the South Tacoma Way corridor X
Remainder of AQCR 229 X
South Central Washington Intrastate AQCR 230 X

Washington—1971 Sulfur Dioxide NAAQS

[Primary and Secondary]

Open Table
Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
Eastern Washington-Northern Idaho Interstate AQCR 62 (Washington Portion) X
Portland Interstate AQCR 193 (Washington Portion) X
Northern Washington Intrastate AQCR 227 X
Olympic-Northwest Washington Intrastate AQCR 228 X
Puget Sound Intrastate AQCR 229:
Tacoma-a parabolic shaped area extending approximately 312 miles SSW from the ASARCO copper smelter X
Remainder of AQCR 229 X
South Central Washington Intrastate AQCR 230 X

Washington—2010 Sulfur Dioxide NAAQS

[Primary]

Open Table
Designated area1 Designation
Date2 Type
Lewis County Unclassifiable.
Thurston County Unclassifiable.
Rest of State:3
Adams Attainment/Unclassifiable.
Asotin Attainment/Unclassifiable.
Benton Attainment/Unclassifiable.
Clallam Attainment/Unclassifiable.
Clark Attainment/Unclassifiable.
Columbia Attainment/Unclassifiable.
Cowlitz Attainment/Unclassifiable.
Ferry Attainment/Unclassifiable.
Franklin Attainment/Unclassifiable.
Garfield Attainment/Unclassifiable.
Grant Attainment/Unclassifiable.
Grays Harbor Attainment/Unclassifiable.
Island Attainment/Unclassifiable.
Jefferson Attainment/Unclassifiable.
King Attainment/Unclassifiable.
Kitsap Attainment/Unclassifiable.
Kittitas Attainment/Unclassifiable.
Klickitat Attainment/Unclassifiable.
Lincoln Attainment/Unclassifiable.
Mason Attainment/Unclassifiable.
Okanogan Attainment/Unclassifiable.
Pacific Attainment/Unclassifiable.
Pend Oreille Attainment/Unclassifiable.
Pierce Attainment/Unclassifiable.
San Juan Attainment/Unclassifiable.
Skagit Attainment/Unclassifiable.
Skamania Attainment/Unclassifiable.
Snohomish Attainment/Unclassifiable.
Spokane Attainment/Unclassifiable.
Stevens Attainment/Unclassifiable.
Wahkiakum Attainment/Unclassifiable.
Walla Walla Attainment/Unclassifiable.
Whitman Attainment/Unclassifiable.
Yakima Attainment/Unclassifiable.

1Includes 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.

2This date is April 9, 2018, unless otherwise noted.

3Chelan, Douglas, and Whatcom Counties will be designated by December 31, 2020.

Washington-Carbon Monoxide

Open Table
Designated Area Designation Classification
Date1 Type Date1 Type
Seattle-Tacoma Area:
Seattle-Tacoma Urban Area (as defined by the Washington Department of Transportation urban area maps)
King County (part) Attainment
Pierce County (part) Attainment
Snohomish County (part) Attainment
Spokane Area
Spokane County (part)
Spokane urban area (as defined by the Washington Department of Transportation urban area maps) 8/29/05 Attainment
Vancouver Area:
Clark County (part) Air Quality Maintenance Area     Attainment
Yakima Area:
Yakima County (part) 12/31/2002 Attainment
Portion of the Central Business District Street intersections: S. 16th Ave. & W Mead Ave, S. 16th Ave & Hathaway Ave., E “I” St. & N 1st St., N 1st St & E “G” St., E “G” St & N 8th St., N 8th St. & Pitcher St., Pitcher St. & I-82 Interchange, Nob Hill Blvd & I-82 Interchange, Rudkin Rd & I-82 Interchange, S 1st St. & Old Town Rd., Old Town Rd & Main St., W Washington & S 1st St., E Mead Ave & S 1st St., S 16th Ave & W Mead Ave.
AQCR 062 E. Washington-N. Idaho Interstate (Remainder of) Unclassifiable/Attainment
Adams County
Asotin County
Columbia County
Garfield County
Grant County
Lincoln County
Spokane County (part)
area outside Spokane urban area
Whitman County
AQCR 193 Portland Interstate (Remainder of) Unclassifiable/Attainment
Clark County (part)
area outside of Vancouver AQMA
Cowlitz County
Lewis County
Skamania County
Wahkiakum County
AQCR 227 Northern Washington Intrastate Unclassifiable/Attainment
Chelan County
Douglas County
Ferry County
Okanogan County
Pend Oreille County
Stevens County
AQCR 228 Olympia-Northwest Washington Intrastate Unclassifiable/Attainment
Clallam County
Grays Harbor County
Island County
Jefferson County
Mason County
Pacific County
San Juan County
Skagit County
Thurston County
Whatcom County
AQCR 229 Puget Sound Intrastate (Remainder of) Unclassifiable/Attainment
King County (part)
area outside the Seattle-Tacoma Urban Area
Kitsap County
Pierce County (part)
area outside the Seattle-Tacoma Urban Area
Snohomish County (part)
area outside the Seattle-Tacoma Urban Area
AQCR 230 S. Central Washington Intrastate (Remainder of) Unclassifiable/Attainment
Benton County
Franklin County
Kittitas County
Klickitat County
Walla Walla County
Yakima County (part)
portion outside the Central Business District

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

Washington—Ozone (1-Hour Standard)2

Open Table
Designated area Designation Classification
Date1 Type Date1 Type
Portland-Vancouver AQMA Area:
Clark County (part) Air Quality Maintenance Area Attainment
Seattle-Tacoma Area:
The following boundary includes all of Pierce County, and all of King County except a small portion on the north-east corner and the western portion of Snohomish County: Starting at the mouth of the Nisqually river extend northwesterly along the Pierce County line to the southernmost point of the west county line of King County; thence northerly along the county line to the southernmost point of the west county line of Snohomish County; thence northerly along the county line to the intersection with SR 532; thence easterly along the north line of SR 532 to the intersection of I-5, continuing east along the same road now identified as Henning Rd., to the intersection with SR 9 at Bryant; thence continuing easterly on Bryant East Rd. and Rock Creek Rd., also identified as Grandview Rd., approximately 3 miles to the point at which it is crossed by the existing BPA electrical transmission line; thence southeasterly along the BPA transmission line approximately 8 miles to point of the crossing of the south fork of the Stillaguamish River; thence continuing in a southeasterly direction in a meander line following the bed of the River to Jordan Road; southerly along Jordan Road to the north city limits of Granite Falls; thence following the north and east city limits to 92nd St. N.E. and Menzel Lake Rd.; thence south-southeasterly along the Menzel Lake Rd. and the Lake Roesiger Rd. a distance of approximately 6 miles to the northernmost point of Lake Roesiger; thence southerly along a meander line following the middle of the Lake and Roesiger Creek to Woods Creek; thence southerly along a meander line following the bed of the Creek approximately 6 miles to the point the Creek is crossed by the existing BPA electrical transmission line; thence easterly along the BPA transmission line approximately 0.2 miles; thence southerly along the BPA Chief Joseph-Covington electrical transmission line approximately 3 miles to the north line of SR 2; thence southeasterly along SR 2 to the intersection with the east county line of King County; thence south along the county line to the northernmost point of the east county line of Pierce County; thence along the county line to the point of beginning at the mouth of the Nisqually River Attainment
AQCR 062 E Washington-N Idaho Interstate (part) Attainment
Spokane County Unclassifiable/Attainment
AQCR 062 E Washington-N Idaho Interstate (Remainder of) Unclassifiable/Attainment
Adams County
Asotin County
Columbia County
Garfield County
Grant County
Lincoln County
Whitman County
AQCR 193 Portland Interstate (Remainder of) Unclassifiable/Attainment
Clark County (part) Remainder of county
Cowlitz County
Lewis County
Skamania County
Wahkiakum County
AQCR 227 Northern Washington Intrastate Unclassifiable/Attainment
Chelan County
Douglas County
Ferry County
Okanogan County
Pend Oreille County
Stevens County
AQCR 228 Olympic-Northwest Washington Intrastate Unclassifiable/Attainment
Clallam County
Grays Harbor County
Island County
Jefferson County
Mason County
Pacific County
San Juan County
Skagit County
Thurston County
Whatcom County
AQCR 229 Puget Sound Intrastate (Remainder of) Unclassifiable/Attainment
King County (Part) Remainder of County
Kitsap County
Snohomish County (Part) Remainder of County
AQCR 230 South Central Washington Intrastate Unclassifiable/Attainment
Benton County
Franklin County
Kittitas County
Klickitat County
Walla Walla County
Yakima County

1This date is October 18, 2000, unless otherwise noted.

2The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Washington. The Portland-Vancouver AQMA and Seattle-Tacoma areas are maintenance areas for the 1-hour NAAQS for purposes of 40 CFR part 51 subpart X.

Washington—PM-10

Open Table
Designated Area Designation Classification
Date Type Date Type
King County:
The portion of the City of Seattle bounded on the east by I-5/East Duwamish Greenbelt, on the south by 104th street, on the west by the West Duwamish Greenbelt north to Fairmont Avenue, S.W., north on Fairmont Avenue to Elliot Bay, and Dearborn Street to I-5 5/14/01 Attainment
The City of Kent and a portion of the Green River valley bounded on the east and west by the 100 foot contour, on the north by South 212th Street, and on the south by Highway 516 5/14/01 Attainment
Pierce County:
Tacoma metropolitan area bounded on the north by Marine View Drive from Commencement Bay east to the 100 foot contour, southeast along the 100 foot contour to 64th Avenue east, south along 64th Avenue east as extended to I-5, I-5 west to the 100 foot contour near Pacific Avenue, and north along the 100 foot contour to Commencement Bay 5/14/01 Attainment
Spokane County:
The area bounded on the south by a line from Universal Transmercator (UTM) coordinate 489000mE, 5271000mN west to 458000mE, 5271000mN, thence north along a line to coordinate 458000mE, 5288000mN, thence east to 463000mE, 5288000mN, thence north to 463000mE, 5292000mN, thence east to 481000mE, 5292000mN, thence south to 481000mE, 5288000mN, thence east to 489000mE, 5288000mN, thence south to the beginning coordinate, 489000mE, 5271000mN 8/30/05 Attainment
Yakima County
The area bounded on the south by a line from UTM coordinate 694000mW, 5157000mN, west to 681000mW, 5157000mN, thence north along a line to coordinate 681000mN, 5172000mN, thence east to 694000mW, 5172000mN, thence south to the beginning coordinate 694000mW, 5157000mN, excluding the area within the exterior boundary of the Yakama Indian Reservation 3/10/05 Attainment
Thurston County
Cities of Olympia, Tumwater, and Lacey 12/04/00 Attainment
Walla Walla and Benton Counties
Wallula:
The area bounded on the south by a line from UTM coordinate 5099975mN, 362500mE, west to 5099975mN, 342500mE, thence north along a line to coordinate 5118600mN, 342500mE, thence east to 5118600mN, 362500mE, thence south to the beginning coordinate 5099975mN, 362500mE 9/26/05 Attainment.
Rest of State 11/15/90 Unclassifiable

Washington—1997 Annual PM2.5 NAAQS

[Primary and Secondary]

Open Table
Designated area Designationa Classification
Date1 Type Date Type
Portland—Vancouver AQMA:
Clark County (part) Unclassifiable/Attainment
Air quality maintenance area
Seattle—Tacoma Area: Unclassifiable/Attainment
The following boundary includes all of Pierce County, and all of King County except a small portion on the north-east corner and the western portion of Snohomish County: Starting at the mouth of the Nisqually River extend northwesterly along the Pierce County line to the southernmost point of the west county line of King County; thence northerly along the county line to the southernmost point of the west county line of Snohomish County; thence northerly along the county line to the intersection with SR 532; thence easterly along the north line of SR 532 to the intersection of I-5, continuing east along the same road now identified as Henning Rd., to the intersection with SR 9 at Bryant;
thence continuing easterly on Bryant East Rd. and Rock Creek Rd., also identified as Grandview Rd., approximately 3 miles to the point at which it is crossed by the existing BPA electrical transmission line; thence southeasterly along the BPA transmission line approximately 8 miles to point of the crossing of the south fork of the Stillaguamish River; thence continuing in a southeasterly direction in a meander line following the bed of the River to Jordan Road; southerly along Jordan Road to the north city limits of Granite Falls; thence following the north and east city limits to 92nd St. N.E. and Menzel Lake Rd.; thence south-southeasterly along the Menzel Lake Rd. and the Lake Roesiger Rd. a distance of approximately 6 miles to the northernmost point of Lake Roesiger; thence southerly along a meander line following the middle of the Lake and Roesiger Creek to Woods Creek; thence southerly along a meander line following the bed of the Creek approximately 6 miles to the point the Creek is crossed by the existing BPA electrical transmission line; thence easterly along the BPA transmission line approximately 0.2 miles; thence southerly along the BPA Chief Joseph-Covington electrical transmission line approximately 3 miles to the north line of SR 2; thence southeasterly along SR 2 to the intersection with the east county line of King County; thence south along the county line to the northernmost point of the east county line of Pierce County; thence along the county line to the point of beginning at the mouth of the Nisqually River.
AQCR 062 E Washington-N Idaho Interstate (part):
Spokane County Unclassifiable/Attainment
AQCR 062 E Washington-N Idaho Interstate (remainder of):
Adams County Unclassifiable/Attainment
Asotin County Unclassifiable/Attainment
Columbia County Unclassifiable/Attainment
Garfield County Unclassifiable/Attainment
Grant County Unclassifiable/Attainment
Lincoln County Unclassifiable/Attainment
Whitman County Unclassifiable/Attainment
AQCR 193 Portland Interstate (remainder of):
Clark County (remainder) Unclassifiable/Attainment
Cowlitz County Unclassifiable/Attainment
Lewis County Unclassifiable/Attainment
Skamania County Unclassifiable/Attainment
Wahkiakum County Unclassifiable/Attainment
AQCR 227 Northern Washington Intrastate:
Chelan County Unclassifiable/Attainment
Douglas County Unclassifiable/Attainment
Ferry County Unclassifiable/Attainment
Okanogan County Unclassifiable/Attainment
Pend Oreille County Unclassifiable/Attainment
Stevens County Unclassifiable/Attainment
AQCR 228 Olympic-Northwest Washington Intrastate:
Clallam County Unclassifiable/Attainment
Grays Harbor County Unclassifiable/Attainment
Island County Unclassifiable/Attainment
Jefferson County Unclassifiable/Attainment
Mason County Unclassifiable/Attainment
Pacific County Unclassifiable/Attainment
San Juan County Unclassifiable/Attainment
Skagit County Unclassifiable/Attainment
Thurston County Unclassifiable/Attainment
Whatcom County Unclassifiable/Attainment
AQCR 229 Puget Sound Intrastate (remainder of):
King County (remainder) Unclassifiable/Attainment
Kitsap County Unclassifiable/Attainment
Snohomish County (remainder) Unclassifiable/Attainment
AQCR 230 South Central Washington Intrastate:
Benton County Unclassifiable/Attainment
Franklin County Unclassifiable/Attainment
Kittitas County Unclassifiable/Attainment
Klickitat County Unclassifiable/Attainment
Walla Walla County Unclassifiable/Attainment
Yakima County Unclassifiable/Attainment
Seattle-Tacoma Area:
Pierce County Unclassifiable/Attainment

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

1This date is 90 days after January 5, 2005, unless otherwise noted.

Washington—2012 Annual PM2.5 NAAQS

[Primary]

Open Table
Designated area1 Designation Classification
Date2 Type Date2 Type
Statewide:
Adams County Unclassifiable/Attainment
Asotin County Unclassifiable/Attainment
Benton County Unclassifiable/Attainment
Clark County Unclassifiable/Attainment
Clallam County Unclassifiable/Attainment
Columbia County Unclassifiable/Attainment
Cowlitz County Unclassifiable/Attainment
Douglas County Unclassifiable/Attainment
Ferry County Unclassifiable/Attainment
Franklin County Unclassifiable/Attainment
Garfield County Unclassifiable/Attainment
Grant County Unclassifiable/Attainment
Grays Harbor County Unclassifiable/Attainment
Island County Unclassifiable/Attainment
Jefferson County Unclassifiable/Attainment
King County Unclassifiable/Attainment
Kitsap County Unclassifiable/Attainment
Kittitas County Unclassifiable/Attainment
Klickitat County Unclassifiable/Attainment
Lincoln County Unclassifiable/Attainment
Mason County Unclassifiable/Attainment
Okanogan County Unclassifiable/Attainment
Pacific County Unclassifiable/Attainment
Pend Oreille County Unclassifiable/Attainment
Pierce County Unclassifiable/Attainment
San Juan County Unclassifiable/Attainment
Skagit County Unclassifiable/Attainment
Skamania County Unclassifiable/Attainment
Snohomish County Unclassifiable/Attainment
Spokane County Unclassifiable/Attainment
Stevens County Unclassifiable/Attainment
Thurston County Unclassifiable/Attainment
Wahkiakum County Unclassifiable/Attainment
Walla Walla County Unclassifiable/Attainment
Whatcom County Unclassifiable/Attainment
Whitman County Unclassifiable/Attainment
Yakima County Unclassifiable/Attainment

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

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

Washington—1997 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Open Table
Designated area Designationa Classification
Date1 Type Date Type
Tacoma, WA:
Pierce County (part) Unclassifiable/Attainment
Starting from where an extension of Kennedy Road Northeast would intersect Commencement Bay, proceed north to the intersection of Marine View Drive (State Route 509) and Kennedy Road Northeast. Proceed south on Marine View Drive to Hylebos Creek. Proceed south along Hylebos Creek to 12th Street East. Proceed east on 12th Street East to 70th Avenue East. Proceed south on 70th Avenue East to State Route 99 (S.R. 99). Proceed north on S.R. 99 0.1 mile north of Birch Street to a driveway to the east. Proceed east along the driveway and continue east along the same alignment to the Pierce County Line/Comprehensive Urban Growth Area (CUGA) boundary. Proceed east along the Pierce County Line/CUGA boundary to the eastern boundary of Edgewood. Proceed south along the eastern boundary of Edgewood to eastern boundary of the Sumner Urban Service Area. Proceed south along eastern boundary of the Sumner Urban Service Area to the eastern boundary of the Puyallup Urban Service Area. Proceed south along the eastern boundary of the Puyallup Urban Service Area to the eastern boundary of Puyallup/CUGA boundary. Proceed south and then west along the CUGA boundary to the eastern boundary of McChord Air Force Base. Proceed north along the eastern boundary of McChord Air Force Base to the northernmost point on the eastern boundary. Proceed from the northernmost point on the eastern boundary of McChord Air Force Base to the south right-of-way of S.R. 512. Proceed west along the south right-of-way of S.R. 512 to the south right-of-way of I-5. Proceed south along the south right-of-way to I-5 to the point opposite the boundary between Lakewood and Camp Murray. Proceed north across I-5 to the boundary between Lakewood and Camp Murray. Proceed north along the western boundary of Lakewood to the point where the western boundary coincides with the CUGA boundary. Proceed north along the CUGA boundary to the southern boundary of Point Defiance Park. Proceed east along the southern boundary of Point Defiance Park to Commencement Bay/CUGA boundary. Proceed southeast, then northeast, and finally northwest along the CUGA boundary to the starting point.
Rest of State:
Adams County Unclassifiable/Attainment
Asotin County Unclassifiable/Attainment
Benton County Unclassifiable/Attainment
Clark County Unclassifiable/Attainment
Clallam County Unclassifiable/Attainment
Columbia County Unclassifiable/Attainment
Cowlitz County Unclassifiable/Attainment
Douglas County Unclassifiable/Attainment
Ferry County Unclassifiable/Attainment
Franklin County Unclassifiable/Attainment
Garfield County Unclassifiable/Attainment
Grant County Unclassifiable/Attainment
Grays Harbor County Unclassifiable/Attainment
Island County Unclassifiable/Attainment
Jefferson County Unclassifiable/Attainment
King County Unclassifiable/Attainment
Kitsap County Unclassifiable/Attainment
Kittitas County Unclassifiable/Attainment
Klickitat County Unclassifiable/Attainment
Lincoln County Unclassifiable/Attainment
Mason County Unclassifiable/Attainment
Okanogan County Unclassifiable/Attainment
Pacific County Unclassifiable/Attainment
Pend Oreille County Unclassifiable/Attainment
Pierce County (remainder) Unclassifiable/Attainment
San Juan County Unclassifiable/Attainment
Skagit County Unclassifiable/Attainment
Skamania County Unclassifiable/Attainment
Snohomish County Unclassifiable/Attainment
Spokane County Unclassifiable/Attainment
Stevens County Unclassifiable/Attainment
Thurston County Unclassifiable/Attainment
Wahkiakum County Unclassifiable/Attainment
Walla Walla County Unclassifiable/Attainment
Whatcom County Unclassifiable/Attainment
Whitman County Unclassifiable/Attainment
Yakima County Unclassifiable/Attainment

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

1This date is 90 days after January 5, 2005, unless otherwise noted.

Washington—2006 24-Hour PM2.5 NAAQS

[Primary and Secondary]

Open Table
Designated area Designationa Classification
Date1 Type Date2 Type
Tacoma, WA
Pierce County (part) 3/12/15 Attainment
Starting from where an extension of Kennedy Road Northeast would intersect Commencement Bay, proceed north to the intersection of Marine View Drive (State Route 509) and Kennedy Road Northeast. Proceed south on Marine View Drive to Hylebos Creek. Proceed south along Hylebos Creek to 12th Street East. Proceed east on 12th Street East to 70th Avenue East. Proceed south on 70th Avenue East to State Route 99 (S.R. 99). Proceed north on S.R. 99 0.1 mile north of Birch Street to a driveway to the east. Proceed east along the driveway and continue east along the same alignment to the Pierce County Line/Comprehensive Urban Growth Area (CUGA) boundary. Proceed east along the Pierce County Line/CUGA boundary to the eastern boundary of Edgewood. Proceed south along the eastern boundary of Edgewood to eastern boundary of the Sumner Urban Service Area. Proceed south along eastern boundary of the Sumner Urban Service Area to the eastern boundary of the Puyallup Urban Service Area. Proceed south along the eastern boundary of the Puyallup Urban Service Area to the eastern boundary of Puyallup/CUGA boundary. Proceed south and then west along the CUGA boundary to the eastern boundary of McChord Air Force Base. Proceed north along the eastern boundary of McChord Air Force Base to the northernmost point on the eastern boundary. Proceed from the northernmost point on the eastern boundary of McChord Air Force Base to the south right-of-way of S.R. 512. Proceed west along the south right-of-way of S.R. 512 to the south right-of-way of I-5. Proceed south along the south right-of-way to I-5 to the point opposite the boundary between Lakewood and Camp Murray. Proceed north across I-5 to the boundary between Lakewood and Camp Murray. Proceed north along the western boundary of Lakewood to the point where the western boundary coincides with the CUGA boundary. Proceed north along the CUGA boundary to the southern boundary of Point Defiance Park. Proceed east along the southern boundary of Point Defiance Park to Commencement Bay/CUGA boundary. Proceed southeast, then northeast, and finally northwest along the CUGA boundary to the starting point
Rest of State:
Adams County Unclassifiable/Attainment
Asotin County Unclassifiable/Attainment
Benton County Unclassifiable/Attainment
Clark County Unclassifiable/Attainment
Clallam County Unclassifiable/Attainment
Columbia County Unclassifiable/Attainment
Cowlitz County Unclassifiable/Attainment
Douglas County Unclassifiable/Attainment
Ferry County Unclassifiable/Attainment
Franklin County Unclassifiable/Attainment
Garfield County Unclassifiable/Attainment
Grant County Unclassifiable/Attainment
Grays Harbor County Unclassifiable/Attainment
Island County Unclassifiable/Attainment
Jefferson County Unclassifiable/Attainment
King County Unclassifiable/Attainment
Kitsap County Unclassifiable/Attainment
Kittitas County Unclassifiable/Attainment
Klickitat County Unclassifiable/Attainment
Lincoln County Unclassifiable/Attainment
Mason County Unclassifiable/Attainment
Okanogan County Unclassifiable/Attainment
Pacific County Unclassifiable/Attainment
Pend Oreille County Unclassifiable/Attainment
Pierce County (remainder) Unclassifiable/Attainment
San Juan County Unclassifiable/Attainment
Skagit County Unclassifiable/Attainment
Skamania County Unclassifiable/Attainment
Snohomish County Unclassifiable/Attainment
Spokane County Unclassifiable/Attainment
Stevens County Unclassifiable/Attainment
Thurston County Unclassifiable/Attainment
Wahkiakum County Unclassifiable/Attainment
Walla Walla County Unclassifiable/Attainment
Whatcom County Unclassifiable/Attainment
Whitman County Unclassifiable/Attainment
Yakima County Unclassifiable/Attainment

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

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

2This date is July 2, 2034, unless otherwise noted.

Washington—NO2 (1971 Annual Standard)

Open Table
Designated area Does not meet primary standards Cannot be classified or better than national standards
Eastern Washington-Northern Idaho, Interstate AQCR 62 (Washington Portion) X
Portland Interstate AQCR 193 (Washington Portion) X
Northern Washington Intrastate AQCR 227 X
Olympic-Northwest Washington, Intrastate AQCR 228 X
Puget Sound Intrastate AQCR 229 X
South Central Washington Intrastate AQCR 230 X

Washington—NO2

[2010 1-Hour standard]

Open Table
Designated area Designationa
Date1 Type
Puget Sound Intrastate AQCR Unclassifiable/Attainment.
Portland (Oregon)-Southwest Washington Interstate AQCR (Washington portion) Unclassifiable/Attainment.
Eastern Washington-Northern Idaho Interstate AQCR (Washington portion) Unclassifiable/Attainment.
Northern Washington Intrastate AQCR Unclassifiable/Attainment.
Olympic-Northwest Washington Intrastate AQCR Unclassifiable/Attainment.
South Central Washington Intrastate AQCR Unclassifiable/Attainment.

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

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

Washington—1997 8-Hour Ozone NAAQS

[Primary and Secondary]

Open Table
Designated area Designationa Category/classification
Date1 Type Date1 Type
Portland-Vancouver AQMA Area:
Clark County (part) Unclassifiable/Attainment
Air Quality Maintenance Area
Seattle-Tacoma Area: Unclassifiable/Attainment
The following boundary includes all of Pierce County, and all of King County except a small portion on the north-east corner and the western portion of Snohomish County: Starting at the mouth of the Nisqually river extend northwesterly along the Pierce County line to the southernmost point of the west county line of King County; thence northerly along the county line to the southernmost point of the west county line of Snohomish County; thence northerly along the county line to the intersection with SR 532; thence easterly along the north line of SR 532 to the intersection of I-5, continuing east along the same road now identified as Henning Rd., to the intersection with SR 9 at Bryant; thence continuing easterly on Bryant East Rd. and Rock Creek Rd., also identified as Grandview Rd., approximately 3 miles to the point at which it is crossed by the existing BPA electrical transmission line; thence southeasterly along the BPA transmission line approximately 8 miles to point of the crossing of the south fork of the Stillaguamish River; thence continuing in a southeasterly direction in a meander line following the bed of the River to Jordan Road; southerly along Jordan Road to the north city limits of Granite Falls; thence following the north and east city limits to 92nd St. NE., and Menzel Lake Rd.; thence south-southeasterly along the Menzel Lake Rd., and the Lake Roesiger Rd., a distance of approximately 6 miles to the northernmost point of Lake Roesiger; thence southerly along a meander line following the middle of the Lake and Roesiger Creek to Woods Creek; thence southerly along a meander line following the bed of the Creek approximately 6 miles to the point the Creek is crossed by the existing BPA electrical transmission line; thence easterly along the BPA transmission line approximately 0.2 miles; thence southerly along the BPA Chief Joseph-Covington electrical transmission line approximately 3 miles to the north line of SR 2; thence southeasterly along SR 2 to the intersection with the east county line of King County; thence south along the county line to the northernmost point of the east county line of Pierce County; thence along the county line to the point of beginning at the mouth of the Nisqually River
AQCR 062   E Washington-N Idaho Interstate (part) Unclassifiable/Attainment
Spokane County Unclassifiable/Attainment
AQCR 062   E Washington-N Idaho Interstate (remainder of) Unclassifiable/Attainment
Adams County
Asotin County
Columbia County
Garfield County
Grant County
Lincoln County
Whitman County
AQCR 193   Portland Interstate (remainder of) Unclassifiable/Attainment
Clark County (part) remainder
Cowlitz County
Lewis County
Skamania County
Wahkiakum County
AQCR 227   Northern Washington Intrastate Unclassifiable/Attainment
Chelan County
Douglas County
Ferry County
Okanogan County
Pend Oreille County
Stevens County
AQCR 228   Olympic-Northwest Washington Intrastate Unclassifiable/Attainment
Clallam County
Grays Harbor County
Island County
Jefferson County
Mason County
Pacific County
San Juan County
Skagit County
Thurston County
Whatcom County
AQCR 229   Puget Sound Intrastate (remainder of) Unclassifiable/Attainment
King County (part) remainder
Kitsap County
Snohomish County (part) remainder
AQCR 230   South Central Washington Intrastate Unclassifiable/Attainment
Benton County
Franklin County
Kittitas County
Klickitat County
Walla Walla County
Yakima County

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

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

Washington—2008 8-Hour Ozone NAAQS

[Primary and Secondary]

Open Table
Designated area Designation1 Classification
Date2 Type Date1 Type
Clark County Unclassifiable/Attainment
King County Unclassifiable/Attainment
Pierce County Unclassifiable/Attainment
Spokane County Unclassifiable/Attainment
Thurston County Unclassifiable/Attainment
Rest of state and rest of Indian country Unclassifiable/Attainment

1Includes any Indian country in each county or area, unless otherwise specified.

2This date is July 20, 2012, unless otherwise noted.

Washington—2015 8-Hour Ozone NAAQS

[Primary and Secondary]

Open Table
Designated area1 Designation Classification
Date2 Type Date2 Type
Tri-Cities Area, WA 1/16/18 Unclassifiable
Benton County.
Franklin County.
Walla Walla County.
Adams County 1/16/18 Attainment/Unclassifiable
Asotin County 1/16/18 Attainment/Unclassifiable
Chelan County 1/16/18 Attainment/Unclassifiable
Clallam County 1/16/18 Attainment/Unclassifiable
Clark County Attainment/Unclassifiable
Columbia County 1/16/18 Attainment/Unclassifiable
Cowlitz County Attainment/Unclassifiable
Douglas County 1/16/18 Attainment/Unclassifiable
Ferry County 1/16/18 Attainment/Unclassifiable
Garfield County 1/16/18 Attainment/Unclassifiable
Grant County 1/16/18 Attainment/Unclassifiable
Grays Harbor County 1/16/18 Attainment/Unclassifiable
Island County 1/16/18 Attainment/Unclassifiable
Jefferson County 1/16/18 Attainment/Unclassifiable
King County 1/16/18 Attainment/Unclassifiable
Kitsap County 1/16/18 Attainment/Unclassifiable
Kittitas County 1/16/18 Attainment/Unclassifiable
Klickitat County 1/16/18 Attainment/Unclassifiable
Lewis County 1/16/18 Attainment/Unclassifiable
Lincoln County 1/16/18 Attainment/Unclassifiable
Mason County 1/16/18 Attainment/Unclassifiable
Okanogan County 1/16/18 Attainment/Unclassifiable
Pacific County 1/16/18 Attainment/Unclassifiable
Pend Oreille County 1/16/18 Attainment/Unclassifiable
Pierce County 1/16/18 Attainment/Unclassifiable
San Juan County 1/16/18 Attainment/Unclassifiable
Skagit County 1/16/18 Attainment/Unclassifiable
Skamania County Attainment/Unclassifiable
Snohomish County 1/16/18 Attainment/Unclassifiable
Spokane County 1/16/18 Attainment/Unclassifiable
Stevens County 1/16/18 Attainment/Unclassifiable
Thurston County 1/16/18 Attainment/Unclassifiable
Wahkiakum County 1/16/18 Attainment/Unclassifiable
Whatcom County 1/16/18 Attainment/Unclassifiable
Whitman County 1/16/18 Attainment/Unclassifiable
Yakima County 1/16/18 Attainment/Unclassifiable

1Includes 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.

2This date is August 3, 2018, unless otherwise noted.

Washington—2008 Lead NAAQS

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

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

1December 31, 2011 unless otherwise noted.

[54 FR 27346, June 29, 1989]


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