Rule 42.2.102 - INTRODUCTION(1) A person taking or wishing to take a particular action may be unsure whether a department rule or statute applies to that action. Section 2-4-501, MCA, provides a person the opportunity to petition the department for a declaratory ruling as to the applicability of a statute, regulation, or order applicable to a petitioner's activity or proposed activity.NEW, 2000 MAR p. 1340, Eff. 5/26/00.15-1-201, MCA; IMP, 2-4-501, MCA;