Porous Pave, Inc. is the manufacturer of Porous Pave, a pour-in-place permeable paving material. An eco-friendly green building product, Porous Pave infiltrates stormwater on-site, reduces the volume and slows the velocity of peak stormwater flow into storm drains and storm sewers, decreases erosion from runoff, filters out water pollutants, and recharges groundwater. Engineered with 29 percent void space, Porous Pave allows water to permeate through its surface, filter down through the compacted aggregate base on which it is poured, and then seep into the soil. Porous Pave XL consists of 50 percent recycled rubber chips and 50 percent stone aggregate with a moisture-cured binding agent. Porous Pave XLB is a special 50-50 rubber-rock formulation for Sand Guard. Porous Pave XLS is 100 percent recycled rubber chips with a more elastic binder.