This EPA-recognized stormwater-infiltration Best Management Practice (BMP) earned a 2013 Water Environment Federation Imagine H2O award for at least two reasons. Even after 18 months of no maintenance, 4,000 inches of rain filtered through PaveDrain within an hour (per ASTM C1701/C1701M-09). It’s also the only paver system that lets customers remove and re-install the same mat to clean out the subgrade. The permeable articulating concrete block/mat’s patented arch provides an internal storage chamber for stormwater runoff. The system meets AASHTO HS-20 and H-20 load testing and ADA design guidelines requiring that surface openings not exceed ½ inch.