Regulations & Permits - Washington State Department of Ecology

State Environmental Policy Act (SEPA)

We provide information about the State Environmental Policy Act (SEPA).

https://ecology.wa.gov/regulations-permits/sepa/environmental-review

Ecology as SEPA lead agency

For some proposals, we lead or co-lead the environmental review.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-at-ecology

SEPA lead agency contacts

Browse tables containing SEPA contacts at state and local agencies in Washington.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-lead-agency-contacts

SEPA Guide for lead agencies

SEPA guidance for lead agencies.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/guide-for-lead-agencies

SEPA Frequently Asked Questions

SEPA questions and answers.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-faq

SEPA guide for project applicants

SEPA guidance for private proponents.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/guide-for-project-applicants

Determining whether SEPA is required

Guidance on whether a proposal needs environmental review under SEPA.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/guide-for-lead-agencies/determining-if-sepa-is-required

SEPA checklist guidance, Section A: Background

Guidance helps applicants complete SEPA part A environmental checklist.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-a-background

Lead agency determination and responsibilities

SEPA guidance for determining lead agency and evaluating the proposal.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/guide-for-lead-agencies/lead-agency-determination-and-responsibilities

SEPA checklist guidance, Section B: Environmental Elements

Checklist guidance Part B Environmental Elements

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements

SEPA checklist guidance, Section C: Signature

Guidance for SEPA environmental checklist Part C.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-c-signature

SEPA Guidance on Categorical Exemptions

Guidance on SEPA exemptions.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/guide-for-lead-agencies/exemptions

SEPA Guidance for Nonproject proposals

Completing SEPA review for "nonproject" proposals.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/guide-for-lead-agencies/non-project-proposals

Revising and adopting existing documents

Guidance for using existing SEPA documents

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/guide-for-lead-agencies/revising-and-adopting-existing-documents

SEPA guidance on appeal process

SEPA guidance on administrative and judicial appeals

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/guide-for-lead-agencies/appeals

SEPA checklist guidance, Section B: Plants

SEPA Guidance for Plants section, Part B for the state Environmental Checklist.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-4-plants

SEPA checklist guidance, Section B: Animals

Guidance for Part B, Animals section for SEPA environmental checklist.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-5-animals

SEPA checklist guidance, Section B: Energy & natural resources

Guidance for Energy & natural resources section for Part B, SEPA environmental checklist.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-6-energy-natural-resou

SEPA checklist guidance, Section B: Environmental health

Guidance for Environmental Health section of Part B for SEPA environmental checklist.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-7-environmental-health

SEPA checklist guidance, Section B: Land & shoreline use

Guidance for Land & shoreline use in Part B of SEPA environmental checklist.

https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-8-land-shoreline-use