Paved areas are the biggest culprits.
For most road surfaces, impervious asphalt and concrete pavement are the only practical options. But for parking areas, low-use driveways, utility access roads, pedestrian pathways, highway shoulders, and fire lanes, there are many advantages to surfaces that can absorb surface water instead of shedding it. Advantages of Grasspave 2 are numerous. The product can handle concentrated loads in excess of 5,000 psi, which is greater than that of most tractor-trailers and fire trucks. Over the life cycle of the product, maintenance requirements will be lower than those of conventional asphalt pavement, according to Invisible Structures co-owner and landscape architect Bill Bohnhoff.