The airport is 3 miles (4.8 kilometres) northwest of the downtown area. Near the 650-acre (260-hectare) airport are the Water Reclamation Plant and the Las Positas Golf Course. There are two parallel asphalt runways. The main lighted runway is 5,250 ft (1,600 m) long. The second runway, unlighted, built in 1985, is 2,700 ft (820 m) long and is used mainly for training. Besides the 2,400-square-foot (220 m2) terminal building, built in 1969, there are nearly 400 aircraft storage hangar units, a corporate-style hangar building containing 20,000 square feet (1,900 m2) of space and an aircraft storage shelter. About 600 aircraft are based on Livermore Airport.