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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Chehalis flood reduction project draft EIS presentation

Presentation of draft EIS for Chehalis Basin flood-reduction project

https://ecology.wa.gov/chehalis-draft-sepa-eis-presentation

Goldendale Environmental Impact Statement (EIS) summary

Ecology released the final Environmental Impact Statement (EIS) for the Goldendale Energy Storage Project. The EIS examines significant adverse environmental impacts if the project is built. The document also identifies if those impacts may be reduced or eliminated through mitigation measures.

https://ecology.wa.gov/goldendale-eis

Publication index: State Environmental Policy Act (SEPA) documents

List of links to all Ecology publications related to the State Environmental Policy Act (SEPA)

https://ecology.wa.gov/sepa-publications

State Environmental Policy Act (SEPA) Register

Searchable register of all SEPA and NEPA documents posted by Ecology since 2000.

https://ecology.wa.gov/sepa-register

ECY to Pend Oreille County regarding SEPA lead request

ECY response to Pend Oreille County Commissioners' letter requesting Ecology take the lead agency role in Environmental review of PacWest Silicon’s proposal

https://ecology.wa.gov/ecy-to-po-commissoners_lead-ag_july2018

Online tool: Ecology's publications

Search through all of our publications and forms, using Keyword, Title, Publication Number, Agency program, Type of publication or Year published.

https://ecology.wa.gov/search-ecologys-publications-database