Wash. Admin. Code § 308-15-075
(1) You must apply your stamp/seal, signature, and the date on every final geology or specialty geology work product prepared by you or under your supervision or direction, and submitted to other parties, as part of the public practice of geology.
(3) The terms "signature" or "signed" as used in chapter 18.220 RCW and this chapter, mean the following:
(a) A handwritten identification or a digital representation of your handwritten identification that represents the act of putting your name on a document to attest to its validity. The handwritten or digital identification must be:
(b) A digital identification is an electronic authentication process attached to or logically associated with an electronic document. The digital identification may include a scanned or digitized signature. The digital identification must be:
[Statutory Authority: RCW 18.220.040, 18.220.050, and 43.24.086. WSR 19-22-034, § 308-15-075, filed 10/31/19, effective 12/1/19. Statutory Authority: RCW 18.220.040. WSR 07-13-038, § 308-15-075, filed 6/13/07, effective 7/14/07. Statutory Authority: RCW 18.220.040, 18.220.050. WSR 05-01-174, § 308-15-075, filed 12/21/04, effective 1/21/05. Statutory Authority: Chapter 18.220 RCW. WSR 01-12-023, § 308-15-075, filed 5/25/01, effective 6/25/01.]