1. (a) Not later than December 1, 2026, the department shall do the following:

   1. (1) Conduct a review of the Indiana Storm Water Quality Manual to determine whether:

      1. (A) the recommendations in the Indiana Storm Water Quality Manual are cost effective; and
      2. (B) any new or revised recommendations are necessary.
   2. (2) Submit a report of its findings and recommendations under subdivision (1) to the legislative council in an electronic format under IC 5-14-6 .

2. (b) The Indiana Storm Water Quality Manual with respect to storm water management basins:

   1. (1) may not require a pond bank ratio greater than three (3) to one (1); and

   2. (2) must require a ten (10) foot maintenance ledge or a ten (10) foot safety ledge, but may not require both.

      The department shall make changes to the Indiana Storm Water Quality Manual to comply with this subsection not later than December 1, 2026.

As added by P.L.73-2026, SEC.4.