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DEPT. OF ENVIRONMENTAL CONSERVATION OFFICE OF THE COMMISSIONER SEAN PARNELL, GOVERNOR 410 Willoughby Avenue, Suite 303 Post Office Box 111800 Juneau, Alaska 99811-1800 Phone: 907-465-5066 Fax: 907-465-5070 www.dec.state.ak.us
September 20, 2011 11.0210 Dennis McLerran, Regional Administrator U.S. EPA Region 10 1200 6th Avenue, Suite 900 (Mail Stop RA-140) Seattle, WA 98101 Dear Mr. McLerran: 

## R eceived SEP 2 3 2011 Office Of Air, Wast e And Toxics This letter provides for your approval amendments to Alaska's State Air Quality Control Plan or State Implementation Plan (SIP), adopted by reference into the Alaska Administrative Code (AAC) at 18 AAC 50.030, with an effective date of September 17, 2011. The Anchorage Transportation Control Program (SIP Volume II, Section III. B) is being revised to update the Municipality of Anchorage's (MOA's) Carbon Monoxide Maintenance Plan with revised data related to the use of EPA's motor vehicle emissions model called MOVES. Volume III (Appendix to Volume II) is also being revised to include MOA's "Anchorage 2007 Carbon Monoxide Emission Inventory and 2007-2023 Emission Projections"; and MOA's "Analysis of Probability of Complying with the National Ambient Air Quality Standards for Carbon Monoxide in Anchorage between 2007 and 2023". We are providing one paper copy and one electronic version of the following documents to Wayne Elson of your staff (note that the electronic version is an exact duplicate of the paper copy):

• Alaska Administrative Code, Title 18, Chapter 50 Air Quality Control with an effective date of September 17, 2011, to be published in Register 199, October 2011; and

• Sections of the State Air Quality Control Plan, adopted by reference under 18 AAC 50.030 as amended July 13, 2011, including the following:

• Volume II, Section III.B.: Anchorage Transportation Control Program; and
• Volume III, Appendix to Volume II (includes 18 AAC Chapter 50 regulations).Dennis McLerran 2 September 20, 2011

The following supporting documents are also being provided: 1. Signed Adoption Order and certified Filing Certificate for Permanent Regulations, with an effective date of regulation September 17, 2011, along with appropriate delegations; 2. Notice of Public Comment, signed May 24, 2011; 3. Affidavit of Publication for the Public Notice, signed June 30, 2011; 4. Affidavit of Agency Record of Public Comment, signed July 12, 2011; 5. Affidavit of Oral Hearing, signed June 29, 2011; 6. Public Hearing Transcripts and Certification of Public Hearing, signed June 30, 2011; 7. Affidavit of Notice of Proposed Adoption of Regulations and Furnishing of Additional Information, signed July 12, 2011; 8. Public Review Draft of 18 AAC 50 regulations which shows the changes made to the regulations, with bold lettering as new language and bracketed language as deleted language, dated May 24, 2011; and 9. A copy of the tracked regulation amendments prepared by the Department of Law in their transmittal packet to the Lt. Governor for filing, dated August 15, 2011. Mr. Scott Sloane is available to your staff to respond to questions or to otherwise assist. He can be phoned at (907) 465-5176. As always, I would be pleased to discuss this with you.

Enclosures
cc: Rick Albright, EPA Region 10 (w/o enclosures) Wayne Elson, EPA Region 10 (w enclosures)

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