NEPA & SEPA

Use this guidance to disclose potential project impacts through the NEPA and SEPA (National and State Environmental Policy Acts) processes in environmental documents.

Determine NEPA/SEPA Strategy

Read Environmental Manual Chapter 300: Project scoping & programming (PDF 329KB) to learn more about determining project classification.

Determine if your project requires one or more federal agencies to take an action. The NEPA guidance on this page is applicable to projects with only a Federal Highway Administration (FHWA) nexus. If other federal agencies will take an action on your project, then you must contact those federal agencies to determine their process and requirements. Some agencies may accept the environmental documentation we prepare under FHWA’s NEPA process.

Use the Model Comprehensive Tribal Consultation Process for the National Environmental Policy Act to learn more about when and how to consult with tribes during the environmental review process. The tribal consultation process varies based on the project classification.

Check for past environmental documents related to your project. Reference, incorporate, or append any relevant information to the environmental document.

Use our NEPA/SEPA strategy checklist (PDF 615KB) to help develop a strategy for environmental documentation. Use this when Determining what discipline reports are needed (PDF 488KB)

Use the Federal Nexus Requirements (PDF 736KB) to understand which regulations your project must comply with based on WSDOT’s most common federal nexus types.

Access ERS

Use Environmental Review Summary (ERS) to document your environmental scoping as part of the Project Summary package. Copy this information into the ECS which serves as your NEPA document for Categorically Excluded projects.

Staff with a WSDOT login, follow these directions to gain access to ERS-ECS:
    1. Contact region IT to have ‘TEIS Capital Projects’ system installed. 
    2. Contact hqithelpdesk@WSDOT.WA.GOV for access.
    3. Launch the application to activate your account.
    4. Contact Keisha.Chinn@wsdot.wa.gov to be added to the environmental group.

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Improved access to 98.2 miles of upstream fish habitat

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28% increase in the value of exports and imports 

from $90.2 billion in 2020 to $115.5 billion in 2021.