New MS4 Permit Resources
The Indiana Department of Environmental Management (IDEM) has converted the 327 IAC 15-13 (Rule 13 – Municipal Separate Storm Sewer Permit) and 327 IAC 15-5 (Rule 5 – Construction Stormwater Permit) to master general permits.
Helpful information and supplemental links are included below:
IDEM's web site with more information on stormwater permits:
The new MS4 general permit: mgp_ms4_final.pdf
The new Construction Stormwater General Permit (CSGP): mgp_csgp_final.pdf
Stormwater Model Ordinance and Technical Standards publications: