Tidewater Stone, Stormwater Brick 5" x 11", Stormwater Brick 4" x 8" & Duragreen. The Genest Stormwater Control products used as part of a permeable pavement system is an excellent way to control runoff water. The aggregate base used in the system helps to filter and reduce pollutants. The ground water is recharged because the water is not running off the pavement. Not only does it collect and properly handle storm water, but provides a functional and attractive paving solution.