The USEPA issued the new “2021 Multi-Sector General Permit (MSGP)” for industrial storm water discharges on January 15, 2021. This permit replaces the 2015 MSGP Permit. All new and existing industrial storm water discharges, as determined by your facility’s NAIC/SIC code, must apply for coverage under the new Permit by submitting a Notice of Intent (NOI) to USEPA or the state, if they have an authorized program. Your facility’s written storm water pollution prevention plan (SWPPP) will also need to be revised to comply with the new Permit. The new Permit is effective March 1, 2021. Deadlines to submit an NOI for Permit coverage are (read more).