created throughout the port, including large swaths that are now Battery Park City, Ellis Island, Liberty State Park, Flushing Meadows–Corona Park, and the Meadowlands Sports Complex. From 1924 until 1986, sewerage sludge was hauled by tugboat and barge to a point offshore in the Atlantic. From 1986 to 1992 it was dumped at a site 106 nautical miles from Atlantic City, after which ocean dumping was banned. Barges were also used to transport waste to Fresh Kills Landfill, the world's largest, which operated from 1948 to 1991. Both operations were known to be detrimental to Long Island and Jersey Shore beaches, notably the 1987 Syringe Tide. Shipwrecks and abandoned boats The port has many sunken ships, some of which can be seen, others that lie on the floor of the ports waterways. The Staten Island boat graveyard is a marine scrapyard located in the Arthur Kill near the Fresh Kills Landfill, on the West Shore of Staten Island. Tourism and recreation Harbor-related historic sites, promenades, and nature preserves within the port district include: South Street Seaport USS Intrepid Sea, Air & Space Museum (Pier 86) Gateway National Recreation Area Statue of Liberty National Monument, Ellis Island and Liberty Island and Governor's Island Hudson River Park, Hudson River Waterfront Walkway, Brooklyn Bridge Park Liberty State Park and Communipaw Terminal Battery Park and Castle Clinton Hackensack Meadowlands, Riverwalk, and Environment Center Pier 63, New York Central Railroad 69th Street Transfer Bridge, and 79th Street Boat Basin Gantry Plaza State Park Manhattan Waterfront Greenway Hoboken Terminal City Island Economy In 2010, 4,811 ships entered the harbor carrying over 32.2 million metric tons of cargo valued at over $175 billion. In 2010, the New York-New Jersey Port industry supported: 170,770 direct jobs 279,200 total jobs in the NY-NJ region Nearly $11.6 billion in personal income Over $37.1 billion in business income Almost $5.2 billion in federal, state and local tax revenues Local and State Tax Revenue: $1.6 billion Federal Tax Revenue: $3.6 billion Approximately 3.2 million twenty-foot equivalent units (TEU) of containers and 700,000 automobiles are handled per year. In the first half of 2014, the port handled 1,583,449 containers, a 35,000-container increase above the six-month record set in 2012, while the port handled a monthly record of 306,805 containers in October 2014. In 2014, the port handled 3,342,286 containers and 393,931 automobiles. In January through June 2015, the top 10 imports that went