Maine MS4 General Permit Renewal

The Maine General Permit for Stormwater Discharges from Municipal Separate Storm Sewer Systems (Maine MS4 General Permit) was last issued in 2013.  Clean Water Act permits, such as this one, are supposed to be re-issued every 5 years.  The Maine Department of Environmental Protection has been issuing drafts of the next MS4 General Permit since approximately January of 2018.  Eleven (11) drafts have been issued, and many comments have been received and addressed.

The Final permit was issued on October 15, 2020, and is provided below:

MS4 Final Signed Permit & Fact Sheet October 2020

An Appeal to the Permit was filed with the Maine Board of Environmental Protection on 11/13/2020 by Friends of Casco Bay.  The Final Permit will still be implemented as issued on 10/15/2020 until some action is taken by either Maine DEP or the Board.  Here is a copy of the Appeal:

11132020 FOCB Appeal of MS4 Permit to BEP

11132020 FOCB Filing Cover Letter Appeal MS4 Permit

The remainder of this page provides copies of some of the most recent drafts and comments.

MS4 General Permit Drafts and Comments

MS4 Final Draft Permit June 2020.docx

Comments from AVSWG, BASWG, ISWG, SMSWG, MEWEA, MMA, DOT, and MTA on 6_23_2020 MS4 Final Draft

GP07082020 FOCB Final Comments MS4 letterhead

07082020 FOCB Typo Corrections for final draft MS4