In lieu of filing a petition for a declaratory order, any person subject to the board's jurisdiction may request an advisory opinion pursuant to rule 351-1.2 (68B). However, as provided in 351-subrule 1.3(6), the board will refuse to issue a declaratory order to a person who has previously received a board opinion on the same question unless the petitioner demonstrates a significant change in circumstances from those in the board opinion.
Iowa Admin. Code r. 351-12.12