Chapter 173-04 WAC

On June 25, 2021, Ecology repealed Chapter 173-04 WAC Practice and Procedure. 

This chapter is no longer needed, as more contemporary rules and laws have replaced this chapter.

Rulemaking timeline


Rule proposal phase (CR-102)

Filing date:
Feb. 4, 2021

Rule proposal documents:

Comment period

Comments due April 6, 2021.
Ecology will review all comments received and plans to adopt the repeal on April 9, 2021  See above for documents related to the proposal phase of the rulemaking.

The comment period on the rule proposal ends April 6, 2021.   

You can give us your comments in any of the following ways:

  • At a public hearing (as described above)
  • You can submit comments through one of the following ways:
    • Submit comments online.
    • Mail to:
      Laura Ballard
      Department of Ecology
      Governmental Relations
      P.O. Box 47600
      Olympia, WA 98504-7600

      For Parcel Service-
      Laura Ballard
      Department of Ecology
      Governmental Relations
      300 Desmond Dr SE
      Lacey, WA 98503
  • Attend a public hearing – see below

Public Hearing via webina

Ecology will hold a public hearing on this rule repeal proposal.  The hearing will begin with a short presentation and question-and-answer session, followed by the opportunity to provide testimony. 

You can attend this hearing by joining our online webinar:

Date: March 24, 2021

Time: 10 a.m. 

Place: Join the webinar – This is an online meeting forum that you can attend from any computer with internet access.  To join the webinar, click on the link above for more information and instructions:

For audio only, call US toll number +1-240-454-0887 and enter access code 803 394 380.  Or to receive a free call back, provide your phone number when you join the event.

Ecology will accept comments at the hearing through the webinar. We recommend you provide your phone number when you join the event to receive a free call back from the system.

Any information (e.g., personal or contact) you provide may be publicly disclosed and posted on the internet.

To request ADA accommodations, contact Ecology’s ADA Coordinator by March 17, 2021:

Rule adoption phase (CR-103)

Adoption date:
June 25, 2021

Rule effective date:
July 25, 2021

Rule adoption documents:

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.