UPDATE: Ecology's new website will be live on Monday morning! Our official web address will be https://ecology.wa.gov

Program Template photo identifier

Rule Making

Chapter 173-401 WAC
Air Operating Permit (AOP) Rule

Public Involvement

Public Comment Period: August 4, 2015 - September 18, 2015

Rulemaking Announcement Phase

Ecology is holding one public hearing on this rule proposal. The hearing will begin with a short presentation followed by a question and answer (Q&A) session. Testimony will start after the Q&A session. Comments may be provided orally by those who attend in person or via the webinar. Staff will also accept written comments submitted at the hearing, but cannot accept written comments via the webinar.

Date: September 10, 2015
Time: 10 a.m.
Location: Ecology, 300 Desmond Drive SE, Lacey, WA
Directions: http://www.ecy.wa.gov/directory_hq.html

Webinar: Ecology is also offering the presentation, Q&A session, and public hearing through a webinar. A webinar is an online meeting forum that can be accessed from any computer or smart phone with an internet connection.

Submit Your Comments

You can submit comments on this rule proposal August 4 - September 18, 2015. You can give us your official comments in the following ways:

  • Email your comments to AQComments@ecy.wa.gov
  • Mail comments to:
    Margo Thompson
    Air Quality Program
    Washington State Department of Ecology
    P.O. Box 47600
    Olympia, WA 98504-7600
  • Testify or submit written comments in person at the public hearing
  • Testify through the webinar during the public hearing
  • Fax comments to: (360) 407-7534
More information

General answers about Ecology's rulemaking process are listed in the Laws & Rules Frequently Asked Questions page.


For special accommodations or documents in alternate format, call (360) 407-6800, 711 (relay service), or 877-833-6341 (TTY).

Ecology's ADA Accessibility page



Margo Thompson
(360) 407-6827

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Washington Clean Air Act
Air Quality Rules