The left image is a before photograph and the right image is an after photograph.
I just completed a project in May 2014 in the Bloomingdale neighborhood in Washington DC. The client and I worked with the RiverSnmart grant program that gives the homeowner up to $1200 to remove impervious material (such as the concrete in the left before photo) encouraging the installation of a pevious surface such as the EP Henry Eco II pavers used for this project. This link will direct you to the RiverSmart program: http://ddoe.dc.gov/service/riversmart-homes-pervious-pavers. Here you can join the program and hire myself or any other approved contractor to perform the work.