MPCA MS4 Compliance Assistance MPCA MS4 Compliance Assistance

Residents stenciling storm drains in St. Paul

Below are guidance documents for MS4 staff to use. We are working to continuously update and add documents. If you have specific guidance request, please let us know in the Help improve this page box below.

• MS4 Staff Site Plan Review Guidance
• Documentation requirements and documents to retain under the MS4 permit