Highlights
The U.S. Environmental Protection Agency (EPA) has published its National Pollutant Discharge Elimination System (NPDES) 2021 Issuance of the Multi-Sector General Permit for Stormwater Discharges Associated with Industrial Activity (MSGP).
Several items from the proposed 2020 MSGP were not adopted in the final version, including a coal-tar sealcoat prohibition, expansion beyond the 2015 MSGP provisions for permitted discharges to CERCLA/Superfund sites, automatic delays to new discharger authorization due to enforcement, universal benchmark monitoring for all dischargers (as opposed to sector-specific requirements) and requiring sector-specific control measure fact sheet checklists.
The permit's effective date is March 1, 2021. Operators with permit coverage under the 2015 MSGP (which has been administratively continued) have until May 30, 2021, to submit a new Notice of Intent (NOI). Eligible new dischargers are required to submit an NOI for permit coverage at least 30 days prior to commencing discharge.