More than one-third of the development is parkland. The land upon which it is built was created by land reclamation on the Hudson River using over 3 million cubic yards (2. 3×10^6 m3) of soil and rock excavated during the construction of the World Trade Center, the New York City Water Tunnel, and certain other construction projects, as well as from sand dredged from New York Harbor off Staten Island. The neighborhood, which is the site of Brookfield Place (formerly the World Financial Center), along with numerous buildings designed for housing, commercial, and retail, is named for adjacent Battery Park. Battery Park City is part of Manhattan Community District 1 and its primary ZIP Codes are 10280 and 10282. It is patrolled by the 1st Precinct of the New York City Police Department. Battery Park City is bounded on the east by West Street, which separates the area from the Financial District of Lower Manhattan.