The Environmental Protection Agency (E.P.A.) recently initiated a national rulemaking to establish a comprehensive program to strengthen its stormwater program, during which it will evaluate sustainable green infrastructure design techniques that mimic natural processes to evapo-transpire, infiltrate and recharge, and harvest and reuse stormwater. The EPA asked the American Society of Landscape Architects to collect case studies on projects that successfully and sustainably manage stormwater. Rock Mill Park in the City of Alpharetta was selected. Breedlove Land Planning was the lead designer for this project, which includes such innovative systems such as bioretention, vegetated sand filters, a greenroof pavilion and a constructed wetland.