Grand Rapids Green Infrastructure Portfolio Standard Policy

Grand Rapids Green Infrastructure Portfolio Standard Policy establishes goals for water quality and infiltration volume for green infrastructure constructed in City projects. The policy includes a definition of green infrastructure, and lists, among other goals, “to infiltrate 1.0% of the baseline first flush runoff volume over the course of 5 years and to provide water quality treatment for an additional 0.25% of the first flush volume on top of the infiltration volume over the course of 5 years.”