UPDATE: Ecology's new website will be live on Monday morning! Our official web address will be https://ecology.wa.gov


Welcome to the on-line edition of the SEPA Handbook. The focus of the handbook is to provide guidance on the State Environmental Policy Act (SEPA). We have provided explanations of the purpose and importance of each step in the SEPA process, and tips on how to best complete them. We have also included information on the history and purpose of SEPA and its relationship with other associated environmental laws.

We hope you find the format and content of the SEPA Handbook helpful in your work with SEPA, whether you are a responsible official, reviewing agency, applicant, concerned citizen, or tribal member. If you have additional questions (or comments you would like to make on this publication), please contact our office:

Washington Department of Ecology
PO Box 47703
Olympia WA 98504-7703
(360) 407-6922

Email: sepahelp@ecy.wa.gov

The SEPA Handbook is intended to be used in conjunction with the State Environmental Policy Act (Chapter 43.21C RCW) and the SEPA Rules (Chapter 197-11 WAC). Should a conflict be found at any time between the guidance in this handbook and either the SEPA Rules or the RCW, it should be understood that this handbook is intended as guidance only, and does not have the legal standing of the RCW or the Rule.


Previous Section | Next Section