Laws & Rules photo identifier

Laws & Rules

Closed Rulemaking

Once Ecology finishes a rulemaking, documents are moved to this closed rulemaking page. Links to documents for closed rulemakings are kept on this page for 2 years after the date of adoption.  To find the complete list of rules Ecology currently implements, visit the Rules by Program or Rules by Topic lists.

Ecology has a rule-making suspension archive site describing the agency’s implementation of executive orders 11-03 and 10-06, both of which suspended non-critical rulemaking between Nov. 2010 and Dec. 2012.

Administration | Air Quality | Environmental Assessment | Grants | Hazardous Waste | Spill Prevention, Preparedness, and Response | Nuclear Waste | Office of Columbia River | State Environmental Policy Act (SEPA) | Shorelands and Wetlands |  Toxic Cleanup | Waste 2 Resources | Water Quality | Water Resources


Air Quality

Chapter 173-400 WAC, General regulations for air pollution sources

Chapter 173-401 WAC, Operating permit regulation

Chapter 173-423 WAC, Low emission vehicles

Chapter 173-441 WAC, Reporting of emissions of greenhouse gases

Chapter 173-442 WAC, Clean Air Rule

Chapter 173-476 WAC, Ambient air quality standards

Environmental Assessment

  • Nothing to report at this time.

Grants and Loans

  • Nothing to report at this time.

Hazardous Waste

  • Nothing to report at this time.

Nuclear Waste

  • Nothing to report at this time.

Office of Columbia River

Spill Prevention, Preparedness, and Response

Chapter 173-182 WAC, Oil spill contingency plan

Chapter 173-185 WAC, Oil Movement by Rail and Pipeline Notification

Chapter 173-186 WAC - Oil Spill Contingency Plan – Railroad

State Environmental Policy Act (SEPA)

Chapter 197-11 WAC, State Environmental Policy Act Rule (SEPA)

Shorelands and Wetlands

  • Nothing to report at this time.

Toxics Cleanup and Sediments

  • Nothing to report at this time.

Waste 2 Resources

Chapter 173-351 WAC, Criteria for municipal solid waste landfills

Chapter 173-900 WAC, Electronic product recycling

Chapter 173-910 WAC, Mercury-Containing Lights Product Stewardship Program

Other Waste 2 Resources Rulemaking

Water Quality

Chapter 173-201A WAC, Water quality standards for surface waters of the state of Washington

Additional WQ standards archival rules documents.

Wastewater discharge permit fees

Water Resources

Chapter 173-167 WAC, Emergency Drought Funding

Water resource inventory areas