This is a rulemaking announcement (CR-101) for Chapter 173-400 WAC General regulation for air pollution sources; Chapter 173-455 WAC Air quality fee regulation and Chapter 173-491 WAC Emission standards and controls for sources emitting gasoline vapors.

Part Three: 310 Transfer stations and drop box facilities, -320 Piles used for storage or treatment, -330 Surface impoundments and tanks, -350 Waste tire storage, -355 Waste tire transportation, and -360 Moderate risk waste handling.

This is draft rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources. (2/28/18)

This is proposed rule language for WAC 173-557 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer.

This is draft rule language for WAC 173-400 General Regulations for Air Pollution Sources.

This is a draft analaysis of Ecology staff workload to manage the registration program for a meeting on 05/24/17 for for WAC 173-455 Air Quality Fee Rule; WAC 173-400 General Regulations for Air Pollution Sources.

This is the notice to withdraw the earlier announcement to expand the scope of the rulemaking.

This is a rulemaking adoption notice (CR-103) for Chapter 173-443 WAC, Hydrofluorocarbons (HFCs) and Chapter 173-455 WAC, Air Quality Fee Rule.

Harborview Marina fire at Gig Harbor

Highway 730 diesel spill near Walla Walla

This rulemaking was withdrawn August 19, 2021 regarding WAC 173-491, WAC 173-400 and WAC 173-455.

This is the rulemaking page for Chapters 173-443 and 173-455 WAC.

This is the rulemaking page for Chapter 173-503A WAC.

This is the emergency rulemaking page for Chapter 173-167 WAC.

This is the rulemaking page to repeal Chapters 173-422 and 173-422A WAC.

This is the rulemaking page for Chapter 173-455 WAC.

This is the rulemaking page for Chapter 173-525 WAC.

This is the rulemaking page for Chapter 173-526 WAC.

This is the rulemaking page for Chapter 173-167 WAC.