The Arthur R. Marshall Loxahatchee National Wildlife Refuge is a wildlife sanctuary is located west of Boynton Beach, in Palm Beach County, Florida. It is also known as Water Conservation Area 1 (WCA-1). It includes the most northern remnant of the historic Everglades wetland ecosystem. Bordering the Everglades Agricultural Area (EAA) to the west and the urban communities of Palm Beach County to the east, the conservation area contains nearly 145,000 acres of Everglades wetland habitat. Owned by the state, WCA-1 is currently managed by U.S. Fish and Wildlife Service and provides an area specified for recreation, wildlife population maintenance and habitat management and restoration. Overview The Arthur R. Marshall Loxahatchee National Wildlife Refuge is located seven miles west of the city of Boynton Beach in Palm Beach County, Florida. The refuge was established in 1951 under the authority of the Migratory Bird Conservation Act and is managed through a license agreement between the South Florida Water Management District and the U.S. Fish and Wildlife Service. In total, the refuge includes nearly 145,000 acres of northern Everglades habitat. The refuge contains one of three water conservation areas (WCAs) in south Florida and is maintained to provide water storage and flood control, as well as habitat for native fish and wildlife populations. Water is regulated by a series of pumps, canals, water control structures, and levees built by the Army Corps of Engineers. These freshwater storage areas and part of the Everglades National Park are all that remain of the original Everglades. Controversy In 2016, the South Florida Water Management District announced that it was providing notice to the U.S. Fish and Wildlife Service that it would cancel the lease of the property to the federal government for failure to control invasive species. SFWMD is believed to have created the invasive species problem in the first place. It is believed that this approach is being taken to allow for polluted water in excess of 10 ppb phosphorus to be stored on the land. Management activities According to the U.S. Fish and Wildlife Service, the refuge's management activities focus primarily on wetland habitat restoration, particularly through water quality and hydropattern improvement, and exotic plant control. A large portion of refuge management effort is spent controlling exotic and invasive plants and pursuing funding to eliminate these threats. The three most problematic exotic plant species on the refuge are melaleuca, Brazilian pepper, and Old