| Title (link to summary) | Number | Date (released or updated) |
|
Rule Implementation Plan - WAC 173-167, Emergency Grant Funding
| 26-11-015 | August 2026 |
|
Implementation Plan: Chapters 173-455, 173-400, and 173-50 WAC – Application Fee and Other Clarifying Updates
| 26-01-012 | August 2026 |
|
Implementation Plan for Chapter 173-446 WAC, Offsets Rulemaking—US Forest Protocol
| 26-14-047 | June 2026 |
|
Rule Implementation Plan: Chapter 173-400 WAC, General Regulations for Air Pollution Sources, Chapter 173-425 WAC, Outdoor Burning, and Chapter 173-430 WAC, Agricultural Burning
| 26-02-006 | June 2026 |
|
Implementation Plan, Amendment to Chapters 173-507, 173-508, 173-513, 173-514, 173-515 WAC, Instream Resource Protection
| 26-11-002 | May 2026 |