101.07 DETERMINATION OF LEGISLATIVE INTENT.
(a)   In enacting a regulation, it is presumed that:
(1)   Compliance with the constitutions of the State and of the United States is intended;
(2)   The entire regulation is intended to be effective;
(3)   A just and reasonable result is intended;
(4)   A result feasible of execution is intended.
         (ORC 1.47)
(b)   A regulation is presumed to be prospective in its operation unless expressly made retrospective. (ORC 1.48)
(c)   If a regulation is ambiguous, the court, in determining the intention may consider among other matters:
(1)   The object sought to be attained;
(2)   The circumstances under which the regulation was enacted;
(3)   The legislative history;
(4)   The common law or former legislative provisions, including laws upon the same or similar subjects;
(5)   The consequences of a particular construction;
(6)   The administrative construction of the regulation.
         (ORC 1.49)