[RenewableEnergyAccess.com] The American Society of Landscape Architects (ASLA) plans to replace the roof on its downtown Washington, DC headquarters building with a green roof. Michael Van Valkenburgh Associates will lead the design process, collaborating with Conservation Design Forum to develop the design and specifications for the approximately 3,300 square foot roof surface. Gensler will provide architectural services relating to the roof access. Executive Vice President of ASLA Nancy Somerville said the demonstration project is “only fitting”, and the association hopes to “provide a catalyst for more green roof development in Washington and beyond.” Founded in 1899, ASLA is the national professional association for landscape architects representing more than 15,000 members. ASLA is a co-sponsor of the Green Roofs for Healthy Cities’ annual meeting May 4-6, in Washington, D.C.