(a) All rules, regulations or standards shall be adopted by and promulgated by the Environmental Management Commission. With the exception of editorial changes, no rule, regulation or standard shall be adopted, amended or repealed unless such rule, regulation or standard has been reviewed by the director and until after a public hearing has been held. Unless different notice provisions are specifically required elsewhere by law, at least 45 days prior to the scheduled date of the hearing the department shall give notice of such hearing by public advertisement in the three newspapers of this state with the largest regional circulation of the date, time, place and purpose of such hearing; and make available to any person upon request copies of the proposed rules, regulations or standards, together with summaries of the reasons supporting their adoption, amendment or repeal.

(b) Any public hearing relating to the adoption, amendment or repeal of department rules, regulations or standards under this section shall be held before a department representative, who shall be designated by the Environmental Management Commission. All such hearings shall be open to the public, and reasonable opportunity to be heard with respect to the subject of the hearing shall be afforded to any person. All testimony taken before the department representative shall be recorded and transcribed. The transcript, any exhibits or any written submissions to the department in relation to such hearings shall be open to public inspection.

(c) After such hearing, the department may revise the proposed rules, regulations or standards, before adoption in response to testimony, written submissions or exhibits introduced at the hearing, without conducting a further hearing on the revisions.

(d) Nothing in this section shall be construed to require a hearing prior to the issuance of any temporary emergency rule or regulation.