In regulatory compliance with Michigan’s National Pollutant Discharge Elimination System (NPDES), permit application for discharge of stormwater to surface- waters from a Municipal Separate Storm Sewer System (MS4), new and redevelopment projects are required to meet Minimum Post-Construction Stormwater Runoff regulations. Controls for this type of runoff are necessary to maintain or restore stable hydrology in receiving waters by limiting surface runoff rates and volumes as well as reducing pollutant loadings from sites that undergo development or significant redevelopment.
Following its values of Accountability, Collaboration, Customer Service, Equity, Innovation, and Sustainability, the City welcomes creative approaches to stormwater management. Stormwater management has and continues to change. The old way was all about getting it out fast. The new mantra is slow it down, spread it out, and soak it in. The Stormwater Credit Trading Program aligns with all these values and to the new way of doing things.
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The Stormwater Credit Trading Program is a way for property owners to comply with post-construction stormwater runoff standards, even if their property does not allow them to capture stormwater onsite, by allowing for the selling and purchasing of Stormwater Credits between property owners in the same geographical zone.
By purchasing Stormwater Credits from participating properties who have generated them, properties with limited capacity for infiltration can meet post-construction regulatory obligations.
Property owners and developers who are required to meet Municipal Separate Storm Sewer System (MS4) post-construction stormwater minimums have the following compliance options:
Step 2 - Submit LUDS application for project that adds GSI capacity
Step 4 - Enable the City to list SVCs in Marketplace (check box on LUDS application)
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311 or 616-456-3000
Water Resource Recovery Facility
1300 Market Ave SW
Grand Rapids, MI 49503
Grand Rapids Green Infrastructure Standards (the Green Book)
Grand Rapids MS4 Stormwater Management Manual
Developer's Guide Brochure
LGROW Rainscaping for Business
Stormwater Standards Manual
LGROW Design Spreadsheet
LGROW Design Spreadsheet Tutorial
Link to ESD Website
Link to Planning Department Website
How-to Guide for Stormwater Credit Trading in Grand Rapids
Purchase Contract Template
Maintenance Agreement Template
Stormwater Credit Price Calculator