R-Tank modular stormwater tanks provide retention / detention, infiltration and underground storage of stormwater. The hallmark features of this system approach are high capacity storage (because of the tanks’ 95% void space) and flexibility of project design (because of the modular nature of the R-Tanks). With hundreds of project installations throughout the US, R-Tank systems have proven easy to integrate into stormwater treatment chains PaveDrain Permeable Pavement System incorporates a patented arch design in the middle of an articulating concrete block to create an internal storage chamber that can be used as a reservoir for stormwater runoff, while simultaneously providing strength for heavy vehicular loads. The PaveDrain system is designed to be a critical component of Low Impact Development (LID) allowing for the infiltration of stormwater runoff. Learning Objectives