General Permit, Forms, & FAQs

Final MS4 General Permit

The Agency of Natural Resources (ANR) issued the VT MS4 General Permit 2017 on Friday, July 27, 2018. The most significant changes to in the 2018 MS4 permit is the requirement for municipalities to develop Phosphorus Control Plans to comply with the Lake Champlain Phosphorus TMDLs.

Final VT MS4 General Permit 2018
Final VT MS4 GP 2018 Response to Comments

Annual Report - Due April 1, 2022

  • Annual Report Form - A complete Annual Report for the 2021 calendar year consists of the Annual Report Form, the Annual Report Workbook, and the BMP Tracking Table. 
  • Annual Report Workbook
  • BMP Tracking Table (updated 3/13/2020) - latest change only affects practices with <0.1" of storage depth. 

Application Documents

Past Presentations and Forms

To submit your MS4's REI, first upload the data to the MRGP Implementation Table.  Once it has been uploaded, complete the REI Submittal Form and submit both the form and the MS4's complete SWMP to the Stormwater Program.  Submittal of the REI requires a permit amendment, so the complete application will be placed on public notice for 30 days.  At the end of that period, when the application has been reviewed and any comments have been addressed, the MS4 will receive an amended permit authorization.  There is no fee associated with this amendment.  

  • REI Guidance & Implementation Table - available on MRGP website

Frequently Asked Questions

Frequently Asked Questions and Guidance

MS4 Baseload and Reduction Target Calculations
Catch Basin Outlet Interim Methodology
MS4 Operational Tracking and Accounting Interim SOP

Stormwater Impaired Waters Flow Monitoring



WSMD - Stormwater Home