Wash. Admin. Code § 172-141-060
Information that falls within the definition of "first amendment activities" as set forth in WAC 172-141-030, may be distributed in open spaces on campus. The distributor is encouraged, but not required, to include its name and address on the distributed information. All individuals and groups may distribute information in outdoor space. Anyone may personally distribute noncommercial announcements, handbills, pamphlets, or materials in any outdoor area of campus consistent with the orderly conduct of university operations, maintenance of university property, and the free flow of vehicular and pedestrian traffic. Efforts must be made to avoid litter. Materials may not be posted or affixed to any university property unless such posting is done in accordance with the university's poster policy. A copy of the poster policy is available on the university's web site.
Wash. Admin. Code § 172-141-060