(1) The practice of any fraud or deceit in obtaining a certificate of registration;
(2) Any negligence, gross negligence, incompetence or misconduct in the practice of geology as a registered geologist;
(3) Any felony; or
(4) The commission of any unlawful act as set forth in ORS 672.505 to 672.705. [1977 c.612 §19; 1995 c.154 §2; 2001 c.232 §3]