(b) Upon a finding by the secretary that the petition represents not less than 51 percent of the producers of the commodity who produce not less than 51 percent of the total quantity of the commodity marketed in the preceding marketing season, the secretary shall do all of the following:

1. (1) Declare the commodity exempt from this article.
2. (2) Immediately repeal all regulations pertaining to the commodity adopted by the secretary pursuant to this division.
3. (3) Make a determination concerning a refund of any assessments collected pursuant to this article.