scope:

The Environmental Protection Agency (EPA) recognizes that stormwater runoff is the single largest contributor to surface water impairment in the United States. Stormwater runoff also has the potential to pollute surface and groundwater supplies. Furthermore, as land is developed, stormwater runoff leaves the site in higher rates and volumes than predevelopment, leading to downstream flooding and bank erosion. Pervious concrete pavement reduces the impact of development by reducing the rate of or eliminating stormwater runoff and protecting water supplies. This report provides technical information on pervious concrete applications, design methods, materials, properties, mixture proportioning, construction methods, testing, and inspection.