(a) [(1)] Any registration, or exemption from registration, issued pursuant to the provisions of this chapter shall not be denied, suspended, or revoked unless the commission denies, suspends, or revokes such registration, or exemption from registration, by proceedings consistent with the administrative procedure act, chapter 34.05 RCW.

(b) [(2)] The commission may suspend any registration simultaneously with the institution of proceedings under RCW 69.50.304, or where renewal of registration is refused, if it finds that there is an imminent danger to the public health or safety which warrants this action. The suspension shall continue in effect until the conclusion of the proceedings, including judicial review thereof, unless sooner withdrawn by the commission or dissolved by a court of competent jurisdiction.