PDFWAC 110-03-0090
Proof of service.
A party may prove that an opposing party was served with documents by providing any of the following:
(1) A sworn statement by the person who served the document;
(2) The certified mail receipt signed by the recipient;
(3) An affidavit or certificate of mailing;
(4) A signed receipt from the person who accepted the commercial delivery service or legal messenger service package;
(5) Proof of fax transmission; or
(6) Acknowledgment by the party being served.
[Statutory Authority: RCW 34.05.220, 43.216.020, and 43.216.065. WSR 20-02-031, ยง 110-03-0090, filed 12/19/19, effective 1/19/20.]