Wash. Admin. Code § 352-32-050
(1) The director or designee establishes for each state park area, according to existing conditions, times, and periods when it will be open or closed to the public. Such times and periods shall be posted at the entrance to the state park area affected and at the park office. No person may enter or be present in a state park area after the posted closing time except:
[Statutory Authority: Chapter 79A.05 RCW. WSR 19-04-075, § 352-32-050, filed 2/1/19, effective 3/4/19. Statutory Authority: RCW 79A.05.030 and 79A.05.035. WSR 13-17-037, § 352-32-050, filed 8/13/13, effective 9/13/13. Statutory Authority: Chapter 79A.05 RCW, including RCW 79A.05.030, 79A.05.035, 79A.05.055, and 79A.05.070. WSR 00-13-070, § 352-32-050, filed 6/16/00, effective 7/17/00. Statutory Authority: RCW 43.51.180. WSR 96-02-015, § 352-32-050, filed 12/21/95, effective 1/21/96. Statutory Authority: RCW 43.51.040 and 43.51.180(7). WSR 92-19-098, § 352-32-050, filed 9/17/92, effective 10/18/92. Statutory Authority: RCW 43.51.040. WSR 90-07-062, § 352-32-050, filed 3/20/90, effective 4/20/90. Statutory Authority: RCW 43.51.040 and 43.51.060. WSR 86-06-020 (Order 91), § 352-32-050, filed 2/25/86; WSR 80-05-007 (Order 45), § 352-32-050, filed 4/4/80; Order 21, § 352-32-050, filed 3/20/75; Order 9, § 352-32-050, filed 11/24/70.]