(1) The Occupational Health Advisory Council has been afforded not less than 30 days notice prior to publication of the proposed text to comment thereon.

(2) Notice shall be given by public advertisement not less than 20 nor more than 30 days prior to the date for such hearing; such notice shall be given in a newspaper of general circulation published in the state capital and also in such newspapers of the four most populous cities of the state, excluding the capital. The published notice shall be published once a week for a period of three weeks.

(3) Nothing herein shall be construed to require a hearing prior to the issuance of an emergency order pursuant to 50-70-117 , MCA.