(1) All meetings of the board are open to the public pursuant to 90-6-105, MCA.   Notice of the board's regular meetings shall be given by:

(a) posting a statement of the time and place of the meeting on a bulletin board at the entrance to the board's offices;

(b) mailing the said notice to a newspaper of general circulation in Helena, Montana, and

(c) mailing said notice to any interested parties who have notified the board in writing.

(2) Notice of the board's special or emergency meetings and notice of committee meetings shall be given by posting a statement of the time, place and nature of the meeting on a bulletin board at the entrance to the board's offices.

(3) In the case of matters determined by the board to be of significant interest to the public, notice shall be given by any of the means in (1) above, and by any additional appropriate means of notice, given sufficiently prior to a final decision to permit public comment on the matter.