Tulalip Landfill is a 147-acre site located on North Ebey Island, within the boundaries of the Tulalip Indian Reservation near Marysville, Washington. The landfill is surrounded by Ebey Slough to the north and Steamboat Slough to the south. Surface water from these sloughs flows into northern Puget Sound, a federally designated national estuary that is a recognized habitat for shellfish and some endangered species, including salmon. The Tulalip Tribe leased land to the Seattle Disposal Company from 1964 to 1979. During that time, an estimated four million tons of commercial, industrial, and hospital waste were deposited in the landfill. In 1979, the landfill was closed.