St. Cloud State University Q Parking Lot Pollution Reduction Project
Projects and Practices 2014
BWSR Bioretention Estimator
This project resulted in estimated reductions of 12 lb. of phosphorus per year and 2 tons of sediment per year
LOCAL LEVERAGED FUNDS
The Q-Lot at St. Cloud State University (SCSU) is an 8 acre (1,000 spaces) gravel and asphalt parking lot. The parking lot's surface is impervious, which means it doesn't allow for rainfall or snow melt to soak into the ground. Instead, the water runs off directly into storm sewers, taking with it sediment, bacteria, automotive fluids and other pollutants which flow straight into the Mississippi River. SCSU staff has frequently witnessed plumes of sediment the color of chocolate milk where the storm sewer discharges into the river. This project's goal is to reduce the pollutant load (chocolate milk colored discharge) currently entering the river from Q-Lot by capturing and treating the first inch of rainfall in a treatment train of best management practices, including bioretention basins or infiltration trenches.