Chapters 173-405, 173-410, 173-415 WAC

On April 23, 2019, Ecology amended three rules:

to align with the August 2018 amendments to Chapter 173-400 WAC — General Regulations for Air Pollution Sources.  Ecology revised Chapter 173-400 WAC to comply with EPA’s direction in the Startup-Shutdown-Malfunction State Implementation Plan Call (SSM SIP Call) (80 FR 33840).

Changes include:

  • Allow more time to submit source test report.
  • Delete outdated provisions.
  • Correct errors.
  • Clarify rule language to make it easier to understand.

Rulemaking timeline


Announcement phase (CR-101)

Filing date:
June 20, 2018

Announcement documents

Rule development phase

June 20, 2018 — November 6, 2018

Public input & involvement

Ecology's meeting with stakeholders

Date Documents Location
Tuesday, 2 p.m.
July 17, 2018
Draft rule 405
Draft rule 410
Draft rule 415
Meeting summary
Ecology, Lacey (map to location)
Tuesday, 2 p.m.
August 14, 2018
Draft rule 405
Draft rule 410
Draft rule 415
Meeting summary
Ecology, Lacey (map to location)

Rule proposal phase (CR-102)

Filing date:
Nov. 7, 2018

Rule proposal documents:

Comment period

Comments were due by December 20, 2018.  We accepted comments in the following ways:
  • Comment online. View comments.
  • Attend a public hearing (in person and webinar):
           December 12, 2018 at 2:30 p.m.
           Department of Ecology
           300 Desmond Drive SE
           Lacey, WA  98503
  • Mail to:  Debebe Dererie
                  Department of Ecology
                  P.O. Box 47600
                  Olympia, WA 98504-7600

Hearing location

Date/Time:  December 12, 2018 at 2:30 p.m.

Location:  In person and webinar
                  Department of Ecology
                  300 Desmond Drive SE
                  Lacey, WA  98503

Agenda: Presentation, question-and-answer session, followed by public hearing

To request ADA accommodations, contact Teresa Reno by December 5, 2018 at:

Rule adoption phase (CR-103)

Adoption date:
April 23, 2019

Rule effective date:
May 24, 2019

Rule implementation information:

Additional languages

Español (Spanish) 中文 (Chinese) Tiếng Việt (Vietnamese) 한국어 (Korean)


To request ADA accommodation for disabilities, or printed materials in a format for the visually impaired, contact Ecology's ADA Coordinator by email at, or call 360-407-6831. People with impaired hearing may call Washington Relay Service at 711. People with speech disability may call TTY at 877-833-6341.