Permeable Pavement Parking Lot Demonstration Site This experimental parking lot demonstrates and allows EPA to docu- ment the capabilities of three types of porous pavement: interlocking concrete pavers, porous concrete, and porous asphalt. Stormwater runoff passes through porous pavement and seeps, or infiltrates, into the ground, mimicking natural hydrological processes, reducing the amount of pollutants in the runoff, and reducing the runoff volume. \ \ \ Research Runoff flows from the conventional asphalt of the driving lanes to drain into the three porous surfaces. Runoff is collected after it filters through the porous pavement, allow- ing researchers to measure volume, flow rates, and quality. Monitoring instruments installed in and beneath the porous pavement allow study of the movement of runoff through the pavement, underlying layers, xand into the native soil. \ \ \\ Results The parking lot will help EPA determine whether the three different permeable surfaces: • Cool more effectively than conventional surfaces. • Reduce stormwater volume flowing to receiving waters. • Improve water quality by removing solids and other environmental contaminants. _.. \ Acknowledgements This project is a joint effort between EPA's Office of Administration and Resources Management, Region 2, and Office of Research and Development. Conventional Impervious Asphalt ------- |