Regulations & Permits

Use this portal to filter and search for all of our regulatory information.

We oversee many state and federal laws designed to protect Washington's land, air, and water. See our laws, rules, & rulemaking page for more information about our current rules and rulemaking.

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Dam construction & modification guidance

We provide guidance and technical notes for dam construction and modification.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dam-construction-modification-guidance

Dam operation & maintenance guidance

We provide guidance to assist dam owners with operations and maintenance.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dam-operation-maintenance-guidance

Dangerous waste guidance

Businesses in Washington that generate dangerous waste must follow the Dangerous Waste Regulations.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance

E-Cycle WA guidance and reports

This page includes E-Cycle WA frequently asked questions and annual reports.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/electronics-ecycle-guidance-and-reports

Financial responsibility for oil spills

Tank vessels are required to have financial responsibility to pay for costs & damages from spills.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/financial-responsibility-for-oil-spills

Cannabis licensing and the environment

Environmental permits may be required for cannabis growers and processors.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-cannabis-businesses

Frequently flooded areas: Critical Areas Ordinance

Frequently flooded areas are covered by Critical Areas Ordinances promoting safety from floods.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-floodplains-critical-areas-ordinanc

Online cleanup guide for homeowners and small businesses

An online cleanup guide for homes and small business properties that might be contaminated.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-residential-cleanups

Information for air monitoring professionals

Standard procedures, quality assurance, and monitoring guidance for air monitoring professionals.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/information-for-air-monitoring-professionals

Learning from incidents and spills

We learn from incidents and spills through investigations and share what we learn with others.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/learning-from-incidents-and-spills

EPA guidance on managing moderate risk waste

U.S. Environmental Protection Agency regulatory guidance on common moderate risk waste topics.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/managing-moderate-risk-waste-guidance

Municipal water law

We help regulate municipal water suppliers to ensure a safe and reliable drinking water supply.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/municipal-water-law

Pollution prevention services for businesses

Pollution prevention resources and technical assistance for businesses in Washington.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/pollution-prevention-services

Bunkering requirements for ships

Learn about best practices and rules that promote safe, spill-free fuel loading in Washington waters.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/requirements-for-bunkering

Safer alternatives to toxic chemicals

We provide tools, training, and other resources to help you find alternatives to toxic chemicals.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/safer-alternatives

Shoreline Master Programs Handbook

The Handbook helps local governments update their shoreline master programs.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/shoreline-master-plan-handbook

Stormwater permittee guidance & resources

Resources for general permit application, reporting on monitoring, and technical requirements.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/stormwater-permittee-guidance-resources

Terrestrial Ecological Evaluations

Terrestrial Ecological Evaluations (TEEs) identify and protect native plants and animals at sites.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/terrestrial-ecological-evaluation

Acronyms & glossary for the Toxics Cleanup Program

We have a list of acronyms and terms commonly used in contaminated site cleanup work.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/toxic-cleanup-acronyms

Rules for used oil generators

Follow these rules if you are a used oil generator.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/used-oil-generators-rules