The owner of this self-storage facility was about to develop his site. His engineers, as well as the city, told him he would need to use 2.5 acres of his 14-acre site to build a detention pond. Gravel alone would not be counted as pervious cover.

He took his plan, did a Google search for permeable pavers, and chose TRUEGRID over all other options. Working hand-in-hand with TRUEGRID, his civil engineers calculated that the entire site’s detention volume requirements could be met with 8″of sub-base under the TRUEGRID surface. The base and fill material was locally sourced 3/4″ limestone. The land was graded with a slight slope so any minimal storm water that did not infiltrate the sub-soils could be sheet flowed toward the rear of the property. A porous pinpoint fabric was also used between the soil and the sub-base rock for added stabilization of the clay soils.