SIP Status Reports

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Status of Alaska Designated Areas

Alaska Areas by NAAQS
NOTE: As of 03/12/2021, these reports are no longer being updated. For the latest information, see the SIP Status Tools.

Jump to Alaska section for: CO (1971) Lead (1978) Lead (2008) NO2 (1971) Ozone-1Hr (1979) Ozone-8Hr (1997) Ozone-8Hr (2008) Ozone-8Hr (2015) PM-10 (1987) PM-2.5 (1997) PM-2.5 (2006) PM-2.5 (2012) SO2 (1971) SO2 (2010)

Alaska 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
Anchorage Area	Maintenance	11/15/1990	Serious	286,227	2019	2.7	Yes	7 / 7		02/18/2004	07/23/2004 69 FR 34935
Fairbanks Area	Maintenance	11/15/1990	Serious	46,211	2019	2.1	Yes	6 / 6		06/21/2004	09/27/2004 69 FR 44601
Alaska Lead (1978) Areas Return to map Top of page
No designated areas for this pollutant.
Alaska Lead (2008) Areas Return to map Top of page
No designated areas for this pollutant.
Alaska NO2 (1971) Areas Return to map Top of page
No designated areas for this pollutant.
Alaska Ozone-1Hr (1979) Areas Return to map Top of page
No designated areas for this pollutant.
Alaska Ozone-8Hr (1997) Areas Return to map Top of page
No designated areas for this pollutant.
Alaska Ozone-8Hr (2008) Areas Return to map Top of page
No designated areas for this pollutant.
Alaska Ozone-8Hr (2015) Areas Return to map Top of page
No designated areas for this pollutant.
Alaska 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	Average Estimated Exceedances (est. exc.) (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
Anchorage; Eagle River	Maintenance	11/15/1990	Moderate	219,193	2017-2019	0.4	Yes	3 / 3	12/20/2010 75 FR 64162	09/29/2010	03/08/2013 78 FR 900
Juneau; Mendenhall Valley area	Maintenance	11/15/1990	Moderate	14,030	2017-2019		Insufficient Data	3 / 3	09/14/2010 75 FR 41379	05/14/2009	07/08/2013 78 FR 27071
Alaska PM-2.5 (1997) Areas Return to map Top of page
No designated areas for this pollutant.
Alaska 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
Fairbanks	Nonattainment	12/14/2009	Serious	87,456	2017-2019	69	No	21 / 8
Alaska PM-2.5 (2012) Areas Return to map Top of page
No designated areas for this pollutant.
Alaska SO2 (1971) Areas Return to map Top of page
No designated areas for this pollutant.
Alaska 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.