No. 26-318
 
Title: PacifiCorp, an Oregon Business Corporation, Petitioner
v.
Casey Sixkiller, Director, Washington State Department of Ecology
Docketed: September 10, 2026
Lower Ct: United States Court of Appeals for the Ninth Circuit
   Case Numbers: (24-4803)
   Decision Date: August 7, 2026
 
Proceedings and Orders
Sep 04 2026 Petition for a writ of certiorari filed. (Response due October 13, 2026)
Petition Appendix Certificate of Word Count Proof of Service
Oct 13 2026 Waiver of right of respondent Casey Sixkiller to respond filed.
Main Document
Oct 21 2026 DISTRIBUTED for Conference of 11/6/2026.
Oct 27 2026 Response Requested. (Due November 27, 2026)
Attorneys
Attorneys for Petitioner
Theodore J. Boutrous Jr.
Counsel of Record
Gibson, Dunn & Crutcher LLP
333 South Grand Ave.
Los Angeles, CA 90071

TBOUTROUS@GIBSONDUNN.COM
Ph: (213) 229-7804
Party name: PacifiCorp


Attorneys for Respondent
Noah Guzzo Purcell
Counsel of Record
Office of the Attorney General
1125 Washington Street, SE
P.O. Box 40100
Olympia, WA 98504-0100

noah.purcell@atg.wa.gov
Ph: 360-753-6200
Party name: Casey Sixkiller