of the World Trade Center, began in the summer of 2010. This project, scheduled for completion by April 20, 2012, uses floating frames to build a "wetlands" in Baltimore's inner harbor. The Waterfront Partnership, a nonprofit group serving the businesses located at the inner harbor, started the project with eight small wetland floats, funded in 2010 with a grant from Blue Water Baltimore. Although the original floats were destroyed by Hurricane Irene, students from the Living Classrooms Foundation and volunteers from T. Rowe Price have built 50 new floating frames to restore the floating wetland system. The inner harbor wetlands system is expected to extract at least two pounds of nitrogen from the water for every 100 pounds of grass growing on the floats. Its underside will also provide a habitat for small marine life, such as worms, barnacles, eels, crabs and mussels. Plants selected for the floats include a variety of marsh grasses which feed on nutrients from sewage leaks and storm runoff. Plastic beverage bottles, retrieved from trash floating in the inner harbor, are embedded in the structure of the floats to provide buoyancy. Notable tenants Maryland Department of Business and Economic Development Maryland Port Administration World Trade Center Institute Ballenger & Roche, LLC See also The Pentagon World Trade Center (Manhattan) September 11, 2001 terrorist attacks List of world trade centers World Trade Centers Association References External links World Trade Center Institute Baltimore World Trade Center - Pei Cobb Freed & Partners Inner Harbor, Baltimore Skyscraper office buildings in Baltimore World Trade Centers Economy of Baltimore Office buildings completed in 1977 1977 establishments in Maryland