runway 6–24 was also lengthened to . In 1965, the Hangar Row apron was expanded and Runway 15–33 was modified to become the x taxiway T-10, There were three seaplane runways on the eastern coast. They were numbered 12–30, 18–36, and 7–25; the first two runways were built as part of the original seaplane base in 1933, while runway 7–25 was added later. There was also a turning basin at the intersection of runways 18–36 and 7–25. The eastern coast also contains a , taxiway for the Coast Guard. It ends in a wooden seaplane ramp that was long by wide. Field The Goldenrod and Tamarack Campgrounds are located near Hangar B. It is the only legal campground in New York City. However, the 46 campsites in the Floyd Bennett Field campground are classified as primitive: there are only portable toilets, and no electricity is provided. The General Management Plan of 1979 also called for the maintenance of grasslands around the field. The region's grasslands, the Hempstead Plains, had declined from its historic range due to urban sprawl. As a result, the Grasslands Restoration And Management Project (GRAMP), a joint venture between the National Park Service and the Audubon Society, was created to maintain the grasslands in the middle of the field. The area managed by GRAMP consists of about of land at the intersection of runways 6-24 (old), 1-19, and 12-30. It is closed to the public. Runways 1-19 and 12-30 were also vegetated, and vehicular barriers were placed across some of the runways. The triangle-shaped Ecology Village is located at the south end of the field, between runways 30 and 33. There are several hundred pine trees in the Ecology Village, which were first planted around 1974. The Ecology Village, an environmental education program for students and specially trained teachers in cooperation with the New York City Department of Education, allows classes of students from the fourth to eighth grades to camp there for a night. In the summer, the campgrounds are available on a permit basis for non-profit organizations and certified adult leaders. The North Forty Natural Area is located on the northern side of the airport, to the south of the Belt Parkway. It was formerly the Navy's munition storage area. The natural area contains a hiking trail, a natural woodland area, and a sandy area with shrubs. The freshwater Return-A-Gift pond, built circa 1980, is