The state of Washington is divided into six regions for the purpose of designating Class B noxious weeds.
Wash. Admin. Code § 16-750-004
Statutory Authority: Chapters 17.10 and 34.05 RCW. 13-01-038, § 16-750-004, filed 12/12/12, effective 1/12/13. Statutory Authority: Chapter 17.10 RCW. 99-24-029, § 16-750-004, filed 11/23/99, effective 1/3/00; 91-24-072, § 16-750-004, filed 12/2/91, effective 1/2/92; 88-18-001 (Order 24, Resolution No. 24), § 16-750-004, filed 8/25/88.