Wash. Rev. Code § 18.130.186
(1) To implement a substance abuse monitoring program for license holders specified under RCW 18.130.040, who are impaired by substance abuse, the disciplinary [disciplining] authority may enter into a contract with a voluntary substance abuse program under RCW 18.130.175. The program may include any or all of the following:
[ 1993 c 367 s 9; 1989 c 125 s 3.]