SIP Status Reports

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Status of Washington Designated Areas

Washington Areas by NAAQS
As of 11/19/2017

Jump to Washington section for: CO (1971) Lead (1978) Lead (2008) NO2 (1971) Ozone-1Hr (1979) Ozone-8Hr (1997) Ozone-8Hr (2008) PM-10 (1987) PM-2.5 (1997) PM-2.5 (2006) PM-2.5 (2012) SO2 (1971) SO2 (2010)


Washington CO (1971) Areas    Return to map
 
Click on the Area name
to view SIP Required Elements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
Annual
(ppm)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/
Approved
Clean Air
Determination
Citation
Effective Date
Click to view
FR notice
Redesignation
Request Date
Redesignation
Citation
Effective Date
Click to view
FR notice
Seattle-Tacoma Area Maintenance 11/15/1990 Moderate > 12.7ppm 3,016,710 2016 1.4 Yes 7 / 7 10/11/1996
61 FR 53323
03/04/1996 10/11/1996
61 FR 53323
Spokane Area Maintenance 11/15/1990 Serious 363,834 2016 1.8 Yes 7 / 7 08/29/2005
70 FR 37269
11/29/2004 08/29/2005
70 FR 37269
Vancouver Area: Clark County (part) Maintenance 11/15/1990 Moderate <= 12.7ppm 400,271 2016   No Data 5 / 5 10/21/1996
61 FR 54560
03/21/1996 10/21/1996
61 FR 54560
Yakima Area Maintenance 11/15/1990 Not Classified 69,565 2016   No Data 1 / 1 12/31/2002
67 FR 66555
08/23/2001 12/31/2002
67 FR 66555

Washington Lead (1978) Areas     Return to map Top of page

No designated areas for this pollutant.

Washington Lead (2008) Areas     Return to map Top of page

No designated areas for this pollutant.

Washington NO2 (1971) Areas     Return to map Top of page

No designated areas for this pollutant.

Washington Ozone-1Hr (1979) Areas    Return to map     Top of page

Click on the Area name
to view SIP Required Elements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
Annual
(ppm)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/
Approved
Clean Air
Determination
Citation
Effective Date
Click to view
FR notice
Redesignation
Request Date
Redesignation
Citation
Effective Date
Click to view
FR notice
Portland-Vancouver AQMA Area Maintenance (NAAQS revoked) 11/15/1990 Marginal 410,990 2014-2016 0.082 Yes 4 / 4 06/18/1997
62 FR 27204
06/25/1996 06/18/1997
62 FR 27204
Seattle-Tacoma Area Maintenance (NAAQS revoked) 01/06/1992 Marginal 3,439,810 2014-2016 0.092 Yes 4 / 4 11/25/1996
61 FR 50438
03/04/1996 11/25/1996
61 FR 50438

Washington Ozone-8Hr (1997) Areas     Return to map Top of page

No designated areas for this pollutant.

Washington Ozone-8Hr (2008) Areas     Return to map Top of page

No designated areas for this pollutant.

Washington PM-10 (1987) Areas    Return to map     Top of page

Click on the Area name
to view SIP Required Elements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
(entire area)
Meets
NAAQS
SIP
Requirements
Original/
Approved
Clean Air
Determination
Citation
Effective Date
Click to view
FR notice
Redesignation
Request Date
Redesignation
Citation
Effective Date
Click to view
FR notice
King County; Kent Maintenance 11/15/1990 Moderate 47,315 2014-2016   No Data 3 / 3 05/14/2001
66 FR 14492
08/23/1999 05/14/2001
66 FR 14492
King County; Seattle Maintenance 11/15/1990 Moderate 661,062 2014-2016   No Data 3 / 3 05/14/2001
66 FR 14492
08/23/1999 05/14/2001
66 FR 14492
Pierce County; Tacoma Maintenance 11/15/1990 Moderate 238,725 2014-2016   No Data 3 / 3 05/14/2001
66 FR 14492
08/23/1999 05/14/2001
66 FR 14492
Spokane County; (part) Maintenance 11/15/1990 Moderate 230,807 2014-2016   Insufficient Data 3 / 3 10/24/2001
66 FR 48808
11/30/2004 08/30/2005
70 FR 38029
Thurston County; Cities of Olympia, Tumwater, and Lacey Maintenance 11/15/1990 Moderate 98,562 2014-2016   No Data 3 / 3 12/04/2000
65 FR 59128
08/16/1999 12/04/2000
65 FR 59128
Walla Walla County; Wallula Maintenance 11/15/1990 Serious 426 2014-2016   No Data 3 / 3 11/21/2002
67 FR 64815
03/29/2005 09/26/2005
70 FR 50212
Yakima County; (part) Maintenance 11/15/1990 Moderate 69,565 2014-2016   Insufficient Data 3 / 3 03/10/2005
70 FR 6591
07/15/2004 03/10/2005
70 FR 6591

Washington PM-2.5 (1997) Areas     Return to map Top of page

No designated areas for this pollutant.

Washington PM-2.5 (2006) Areas    Return to map
Area designated nonattainment for the 24-hour standard     Top of page

Click on the Area name
to view SIP Required Elements


Area
Status Designation
Date
Classification 2010
Population
(state portion)
Meets NAAQS
Basis
Design Value
24-Hr
(µg/m3)
(entire area)
Meets
NAAQS
SIP
Requirements
Original/
Approved
Clean Air
Determination
Citation
Effective Date
Click to view
FR notice
Redesignation
Request Date
Redesignation
Citation
Effective Date
Click to view
FR notice
Tacoma Maintenance 12/14/2009 Moderate 539,682 2014-2016 28 Yes 6 / 1 10/04/2012
77 FR 53772
11/04/2014 03/12/2015
80 FR 7347

Washington PM-2.5 (2012) Areas     Return to map Top of page

No designated areas for this pollutant.

Washington SO2 (1971) Areas     Return to map Top of page

No designated areas for this pollutant.

Washington SO2 (2010) Areas     Return to map Top of page

No designated areas for this pollutant.
We have made our best effort to ensure that the data contained in these reports is accurate. We note that there may be brief delays in updating the reports as we receive new state submissions and we take rulemaking action on plans. In order to assist us in providing accurate information, we request that you contact us by clicking on the "Contact Us" link near the top of this page with any comments regarding or corrections to the posted information, including concerns about whether the entries reflect the most recent status.

Current and historical design value data can be found on the EPA Air Quality Design Values website and the EPA Green Book contains comprehensive nonattainment area, designation status, and historical information.

The level of the 1-hour NAAQS for sulfur dioxide is 75 parts per billion (ppb) calculated as the 3-year average of the 99th percentile of the annual distribution of daily maximum 1-hour average concentrations.