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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Prevention of Significant Deterioration (PSD) permit

Prevention of Significant Deterioration (PSD) permits for major sources of air pollution.

https://ecology.wa.gov/regulations-permits/permits-certifications/air-quality-permits/prevention-of-significant-deterioration-psd

Operations manual requirements

Operations manuals help prevent spills during the transfer, storage, and handling of oil.

https://ecology.wa.gov/regulations-permits/plans-policies/operations-manual-for-regulated-facilities

Infrastructure, rule, & program plans

Our plans and rules to improve air quality and meet national air quality standards.

https://ecology.wa.gov/regulations-permits/plans-policies/state-implementation-plans/infrastructure-sips

Appealing a Shoreline Permit

Information on how to appeal a shoreline permit.

https://ecology.wa.gov/regulations-permits/permits-certifications/shoreline-permits-enforcement/appealing-a-shoreline-permit

Dangerous waste treatment by generator

Learn how your business may be allowed to treat your own dangerous waste on-site.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/dispose-recycle-or-treat/treatment-by-generator

Western Washington Hydrology Model

Western WA Hydrology Model models most hydrologic conditions for stormwater control and design.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/stormwater-permittee-guidance-resources/stormwater-manuals/western-washington-hydrology-model

Exploratory rulemaking for Chapter 173-460 WAC – Controls for New Sources of Toxic Air Pollutants

This is the rulemaking page for Chap. 173-460 WAC, Controls for New Sources of Toxic Air Pollutants.

https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/rulemaking/wac-173-460-exploratory-rulemaking