WAC 388-78A-4000
WAC 388-78A-4000. Notice—Service complete
Service of the department notices is complete when:
(1) Personal service is made;
(2) The notice is addressed to the individual or facility at his or her last known address, and deposited in the United States mail;
(3) The notice is faxed and the department receives evidence of transmission;
(4) Notice is delivered to a commercial delivery service with charges prepaid; or
(5) Notice is delivered to a legal messenger service with charges prepaid.