OP’s proposed revisions to the zoning code include several elements designed to improve the city’s sustainability, including the Green Area Ratio (GAR) for commercial and multifamily properties, pervious surface requirements for the lower density residential zones, increased landscaping requirements for parking lots, and increased availability of bike parking and car sharing; however, the inclusion of green code provisions is just one of many efforts by the District to support its sustainability goals. Last week Mayor Vincent Gray released the Sustainable DC Plan to ensure that the District is the healthiest, greenest, and most livable city in the nation. The plan is the culmination of 20 months of work by the Sustainable DC initiative, launched in September 2011 and co-led by the DC Office of Planning and the District Department of the Environment.