Commercial stormwater credit application
Before you begin
Be sure you have the required application materials:
- Basic Salt Management Plan (SMP)
- Maps, plans, and diagrams detailing:
- The drainage for the entire site including:
- Drainage area delineations to each stormwater management facility.
- Impervious area for each delineation and facility.
- All related infrastructure to the stormwater management facilities, including pre-treatment, inlets, outlets, storm pipes, manholes and underdrains
- Any connection points to the City of Minneapolis stormwater system
- The drainage for the entire site including:
- Provide modeling information or calculations to prove that credit criteria are met as follows:
- Water Quality Credit: Provide water quality model inputs and results using one of these models
- P8 (version 2.4 or newer)
- WinSLAMM (version 9.4 or newer)
- MIDS Calculator
- Rate control credits:
- HydroCAD
- XP SWMM
- EPA SWMM
- Volume control credit:
- Calculation in conjunction with HydroCAD
- Water Quality Credit: Provide water quality model inputs and results using one of these models
- Operations & Maintenance (O&M) Plan: Include pollution prevention practices for the properties, such as covering material storage areas.
- Advanced SMP (if applying for Advanced SMP Credit Type): This is separate from the Basic SMP and must demonstrate that winter maintenance practices are reducing and/or eliminating salt use in applicable areas.
Get templates and examples of supporting materials
Applicant guide
Types of stormwater credits
|
Credit Type |
Description |
% of Stormwater Charge |
Applied to |
|
|
1 |
Chapter 54 |
Meet the minimum standards for water quality treatment, peak discharge rate control, and volume control of Chapter 54 as a part of development approval. |
10% |
Property area meeting the standard. |
|
2 |
Advanced Salt Management Plan (SMP) |
Implement a SMP that demonstrates winter management salt reduction: Advanced SMP Form Here |
Up to 30% |
Portions of property where winter site management is required. |
|
3 |
Voluntary/Unregulated |
|
Up to 30% |
Property area meeting the standard. |
|
4 |
Above and Beyond |
|
20%
60% |
Property area meeting the standard. |
|
5 |
Equity |
Credit added for implementing stormwater best management practices on properties located in Green Zones |
10% |
Property area meeting the standard. |
Request accessible format
If you need help with this information, please email 311, or call 311 or 612-673-3000.
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