Working with a developer-led consultant team, WRT prepared a Specific Plan for this 548-acre brownfield site adjoining San Francisco’s southern border. As a former landfill and rail yard, the site poses significant challenges in terms of geotechnical and contamination issues, while unique site features such as regional transportation facilities, wetlands, bay views, a tidal channel and lagoon, and historic structures shaped the community design. Envisioned as a high-density, transit-oriented mixed-use neighborhood, a key challenge was the balancing of land uses and the effective integration of regional transit systems to minimize increases of vehicle trips on already constrained regional roadways and optimize transit, bicycle and pedestrian travel. Altogether, the plan provides for 4,000 new residential units, a million square feet of retail, hotel and conference facilities, and 6 million square feet of office and R&D uses, while retaining nearly a third of the area in parks and open space.