Rule 38.3.2506 - NOTICE OF CHANGE(1) Section 69-12-504, MCA, requires that all changes in rates, or in rules that affect rates, shall be filed with the commission at least 45 days before the date upon which they are to become effective unless otherwise authorized by the commission.Mont. Admin. r. 38.3.2506
IMP, Sec. 69-12-504, MCA, Eff. 12/31/72.