J&M has a long history of installing this environmentally LEED®-friendly form of concrete pavement which channels storm water directly down to the native subgrade thereby greatly reducing undesirable and in some jusristictions, illegal surface run-off. J&M is one of the largest concrete contractors in Southern California specializing in installing pervious concrete. J&M’s ACI-Certified pervious concrete installers have constructed over 750,000 square feet of pervious concrete on over 52 projects throughout California.