Section NR 216.025 - Designation criteriaThe department may require the owner or operator of any municipal separate storm sewer system to obtain permit coverage under this subchapter if the system meets any of the following:
(1) It serves an area contiguous to an area served by a municipal separate storm sewer system that is required to have permit coverage under this subchapter and it receives runoff from 320 or more total acres from any combination of the following land uses including all pervious and impervious land covers such as roof tops, parking lots, roads, sidewalks and grassed areas:(d) Residential with greater than 4.0 homes per acre.(2) The department has site-specific information that the municipal separate storm sewer system has a physical, chemical or biological impact that threatens or impairs the designated uses of waters of the state.(3) The department determines that controls are needed on the municipal separate storm sewer system based on wasteload allocations that are part of a U.S. EPA approved or established TMDL or equivalent analysis that addresses the pollutants of concern.Wis. Admin. Code Department of Natural Resources NR 216.025
CR 03-028: cr. Register July 2004 No. 583, eff. 8-1-04.