MS4 General Permit reissuance

The MPCA is in the process of reissuing the MS4 General Permit. At this time, the MPCA anticipates the MS4 General Permit to be reissued in Fall 2019. Although the current MS4 General Permit expired on July 31, 2018, those covered under the current permit will continue to operate under it until the MPCA reissues the new permit. The new permit is subject to the NPDES Stormwater Final MS4 General Permit Remand Rule, which emphasizes permit requirements to be “clear, specific, and measurable.”

Informal pre-public notice documents

The following documents are open for informal review and comment through June 6, 2019:

Draft MS4 General Permit: File:Draft MS4 Permit (5.7.2019).pdf

Draft MS4 Permit TMDL Requirements: File:Draft MS4 Permit TMDL Requirements Summary (5.7.2019).pdf

(Added May 21, 2019) Draft MS4 General Permit-Highlighted Version: File:Draft MS4 Permit (5.7.2019)-Highlighted Version.pdf This version highlights permit requirements the MPCA finds notable, such as new requirements or existing requirements where additional specificity was included from the 2013 MS4 General Permit. Please note this version does not highlight every change from the 2013 MS4 General Permit, such as requirements that were reorganized, reworded, or removed.

Comments?

To provide comments, please follow the instructions in the survey form at http://survey.mn.gov/s.asp?k=154110622799. The MPCA will review and consider all comments received and may make changes to the draft permit based on those comments, but the MPCA will not respond to each comment. The MPCA will provide formal responses to public comments, in accordance with Minn. R. 7001.1070, after the formal public comment period, which is planned for later this summer.

Questions?

Please send questions to Cole Landgraf at cole.landgraf@state.mn.us.