Division of Air Quality Air Permit Program

State of Alaska Air Quality Regulations

• Alaska Air Quality Control Regulations 18 AAC 50, Effective September 7, 2022 (PDF)
• Reference Materials for 18 AAC 50
• 18 AAC 50 Alaska Air Quality Control Definitions Document, Updated November 7, 2018 (PDF)

For all current and future revisions to 18 AAC 50 regulations, please refer to the Alaska SIP and Regulation Revisions webpage.

18 AAC 50 - Air Quality Regulations, 2019 Adoption Updates, Standard Conditions, PAEL revisions to 18 AAC 50. The regulations went into effect on November 7, 2020.  Details of the proposed revisions can be found at the link below.

• 2019 Adoption Updates, Standard Conditions, PAEL Updates

18 AAC 50 - Air Quality Regulations, 2018 Adoption Updates to 18 AAC 50. The regulations updates part of this package went into effect on September 15, 2018. The Standard Conditions and related regulatory language parts of this package will be adopted in a future adoption action.

• Public Notice; January 18, 2018 (PDF)
• Proposed Regulations, 18 AAC 50 (PDF)
• Questions and Answers Web Page
• Responsiveness Summary (PDF)
• Please see the 2018 Adoption Updates Proposal Webpage for all documents relating to this package.

18 AAC 50 - Air Quality Regulations, 18 AAC 50.240 Updates regarding Excess Emissions - These regulations went into effect on December 29, 2016. ↓

18 AAC 50 - Air Quality Regulations, 2016 Updates - Regulations were signed and filed by the Lt. Governor's office on July 21, 2016. These regulations went into effect on August 20, 2016.

• Public Notice; February 17, 2016 (PDF)
• Public Notice Cancelling Public Hearing scheduled for March 22, 2016 (posted March 17, 2016, PDF)
• Proposed Regulations, 18 AAC 50, 2016 Updates; February 17, 2016 (PDF)
• Explanation of Changes; February 2016 (PDF)
• Standard Condition I - Emission Fees (PDF)
• Standard Condition VII - Operating Reports (PDF)
• Standard Condition XV -Emission Inventory Reporting (PDF)
• Standard Condition XVI - Emission Inventory Reporting Form (PDF)
• Reference Materials for 18 AAC 50 (PDF)
• Questions and Answers Web Page
• Responsiveness Summary, May 18, 2016 (PDF)

18 AAC 50 - Air Quality Regulations, Administration and Emission Fees - Public Comment Period ended on June 30, 2015. The regulations went into effect on September 26, 2015.

• Public Notice, May 21, 2015 (PDF)
• Public Notice Cancelling Public Hearing on June 24, 2015 (posted June 19, 2015, PDF)
• Proposed Regulations, 18 AAC 50, Permit Administration and Emission Fees (PDF)
• 2014 Fee Study Report, May 2015 (PDF)
• Fee Study Report Appendix
• Explanation of Changes (PDF)
• Questions and Answers Web Page
• Revised Fee Spreadsheet for Appendix, Revised July 2015 (PDF)
• Response to Comments, August 7, 2015 (PDF)

18 AAC 50 - Air Quality Regulations, Conformity, SIP Updates - ADEC public noticed this package of revisions on March 19, 2014. The "regulated NSR pollutant" definition portion of the regulations went into effect on November 9, 2014; the remainder of the revisions went into effect on April 17, 2015.

• Public Notice (PDF)
• Public Notice Cancelling Public Hearing, April 18, 2014 (posted April 16, 2014, PDF)
• Proposed Regulations Changes (PDF)
• Explanation of Proposed Changes (PDF)
• State Air Quality Control Plan Amendments - Vol. II, Section III.I: Transportation Conformity (PDF)
• State Air Quality Control Plan Amendments - Vol. III, Appx. III.J: General Conformity-Repealed (PDF)
• State Air Quality Control Plan Amendments - Vol. III: Appendices (PDF)

18 AAC 50 - Adoption Updates Package - ADEC public noticed this package of revisions on April 30, 2013. The Public Comment Period ran from April 30 - June 3, 2013. The revisions went into effect on October 6, 2013.

• Public Notice (PDF)
• Public Notice Cancelling the Public Hearing, May 13, 2013 (PDF)
• Proposed Regulation Changes (PDF)
• Explanation of Proposed Changes (PDF)
• Response to Comments, June 2013 (PDF)

18 AAC 50 - 1-hr NO2 Standards and Infrastructure SIP - this package is now effective, as of January 4, 2013.

• Public Notice (PDF)
• Public Notice Cancelling Public Hearing (PDF)
• Supplemental Public Notice, extending comment deadline to April 24, 2012 (PDF)
• Proposed Regulation Changes (PDF)
• Explanation of Proposed Changes (PDF)
• Amendments to State Air Quality Control Plan; Volume II, Section II (PDF)
• Amendments to State Air Quality Control Plan; Volume II, Section III.H.1 (PDF)
• Amendments to State Air Quality Control Plan; Volume III (PDF)
• Response to Comments, September 2012 (PDF)

18 AAC 50 - Adoption by Reference Updates and Title V Standard Application and Forms - This package has been signed and filed by the Lt. Governor's office, and the regulation changes went into effect on September 14, 2012.

• Public Notice (PDF)
• Supplemental Public Notice, extending comment deadline to October, 17, 2011 (PDF)
• Proposed Regulation Changes (PDF)
• Explanation of Proposed Changes (PDF)
• Title V Standard Application Submittal Instructions (PDF)
• Title V Standard Application Checklist (PDF)
• Title V Standard Form A documents (PDF)
• Title V Standard Form B documents (PDF)
• Title V Standard Form C documents (PDF)
• Title V Standard Form D documents (PDF)
• Title V Standard Form E documents (PDF)
• Response to Comments, May 22, 2012 (PDF)

18 AAC 50 - PM-2.5, 1-hour SO2, and other revisions - this package was signed and filed by the Lt. Governor on August 18, 2011. The revised regulations went go into effect on September 17, 2011.

• Public Notice
• Proposed Regulation Changes (PDF)
• Frequently Asked Questions (PDF)
• Response to Comments (PDF)

18 AAC 50, Adoption by Reference Updates and Standard Conditions:

• Public Notice
• Proposed Regulation Changes (PDF)
• Explanation of Proposed Changes (PDF)
• Proposed Changes and New Standard Conditions (PDF)
• Response to Comments (PDF)

18 AAC 50, Permit Administration and Emission Fees:

• All Permit Fees Table (PDF)
• Public Notice
• Supplemental Public Notice
• Proposed Regulation Changes (PDF)
• Fee Rate Evaluation Report (PDF)
• Fee Rate Evaluation Report Appendices
• Permit Fee Table (PDF)

Best Available Retrofit Technology (BART):

• Response to Comment (PDF)
• Public Workshop Transcript 04-03-2007 (PDF)
• Public Workshop Transcript 05-29-2007 (PDF)
• BART Modeling Discussion (PDF)
• Public Notice
• Proposed Regulation Changes (PDF)
• Proposed Change to State Air Quality Control Plan (PDF)
• BART-Eligible Emission Unit Table (PDF)
• EPA Additional Regional Haze Questions (PDF)
• Air Non-Point and Mobile Source Regional Haze

Oil and Gas Rig Regulations:

• Response to Comments (PDF)

Other Links:

• Air Quality Statute AS 46.14 (PDF)
• Standard Permit Conditions
• State Implementation Plan

If you are unable to download the regulations from the link above, you may request a copy of the Air Quality Regulations by calling 907-465-5121 or e-mail: Rebecca.Smith@alaska.gov

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