Wis. Admin. Code NR § 203.04
The regulations in this chapter prescribe the policies and procedures to be followed in issuing the notice of and the conducting of a public informational hearing and deciding the final determination as to whether to issue or deny a permit authorizing discharges into the waters of the state of Wisconsin. A public informational hearing, either mandatory or discretionary on the department, is to give all interested persons an additional opportunity to make a statement with respect to a proposed permit or permit application and to have such statements considered in the final determination. Exceptions to the requirements for holding a public informational hearing are provided in s. NR 203.015. The promulgation of the regulations in this chapter is by authority of ss. 283.49(1) (c) and (2) (b), Stats.
Wis. Admin. Code Department of Natural Resources § NR 203.04