Search Results

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Looking for a report, publication or form?
Search our Publications & Forms collection.

Specialty Minerals Longview

Comment Period: May 27, 2025, 12 a.m. - July 1, 2025, 11:59 p.m.
Specialty Minerals Longview

https://ecology.wa.gov/events/swm/specialty-minerals-longview/specialty-minerals-longview

Organics management rulemaking

Public Event: Nov. 5, 2025, 2 p.m., in Online webinar
We invite you to join us for our third public meeting about organics management rulemaking.

https://ecology.wa.gov/events/swm/organics-rulemaking/organics-rulemaking-public-meeting-3

Organics management rulemaking

Comment Period: Oct. 21, 2025, 12 a.m. - Nov. 21, 2025, 11:59 p.m.
We invite you to review and comment on the draft language for the organics management rulemaking.

https://ecology.wa.gov/events/swm/organics-rulemaking/organics-rulemaking-informal-comment-period

Flame Cap Kilns, Chapters 173-425, 173-430, 173-400 WAC

Public Event: Jan. 6, 2026, 10 a.m., in online webinar
We are holding a public hearing about the rulemaking to update three rules:

https://ecology.wa.gov/events/aq/rulemaking-173-425/173-425-public-hearing-1-6-26

Lincoln Rock Hydrogen Facility

Comment Period: April 29, 2025, 12:01 a.m. - June 5, 2025, 11:59 a.m.
State Waste Discharge Permit Application

https://ecology.wa.gov/events/swm/lincoln-rock-hydrogen-facility/lincoln-rock-hydrogen-facility

Organics management rulemaking

Public Event: Nov. 5, 2025, 12 p.m., in Online webinar
We invite you our Environmental Justice listening session about organics management rulemaking.

https://ecology.wa.gov/events/swm/organics-rulemaking/organics-rulemaking-ej-listening-session

Draft guidance chapters

Comment Period: May 1, 2025, 12 a.m. - Nov. 21, 2025, 11:59 p.m.
We are accepting comments on the remaining draft guidance chapters.

https://ecology.wa.gov/events/wq/voluntary-clean-water-ag-guidance/voluntary-clean-water-guidance

Flame Cap Kilns and Air Curtain Incinerators, Chapters 173-425, 173-430, and 173-400 WAC

Comment Period: Nov. 13, 2025, 12 a.m. - Jan. 20, 2026, 11:59 p.m.
We are proposing to update three rules:

https://ecology.wa.gov/events/aq/rulemaking-173-425/173-425-comment-ends-1-20-26