Regulations driving the studies

In the U.S. the National Environmental Policy Act (NEPA) of 1969 set forth requirements for analysis of major projects in terms of specific environmental criteria. Numerous state laws have echoed these mandates, applying the principles to local-scale actions. The upshot has been an explosion of documentation and study of environmental consequences before the fact of development actions. One can examine the specifics of environmental science by reading examples of Environmental Impact Statements prepared under NEPA such as: Wastewater treatment expansion options discharging into the San Diego/Tijuana Estuary, Expansion of the San Francisco International Airport, Development of the Houston, Metro Transportation system, Expansion of the metropolitan Boston MBTA transit system, and Construction of Interstate 66 through Arlington, Virginia. In England and Wales the Environment Agency (EA), [6] formed in 1996, is a public body for protecting and improving the environment and enforces the regulations listed on the communities and local government site.[7] (formerly the office of the deputy prime minister). The agency was set up under the Environment Act 1995 as an independent body and works closely with UK Government to enforce the regulations. San Francisco International Airport (IATA: SFO, ICAO: KSFO, FAA LID: SFO) is a major international airport located 13 miles (21 km) south of downtown San Francisco, Californi

, United States, near the cities of Millbrae and San Bruno in unincorporated San Mateo County.[3] It is often referred to as SFO. The airport has flights to points throughout North America and is a major gateway to Europe and Asia. It is the largest airport in the San Francisco Bay Area and the second busiest airport in California after Los Angeles International Airport. In 2009 San Francisco International Airport was the tenth busiest in the United States[4] and the twentieth largest airport in the world,[5] by passenger count. It is the fifth largest hub of United Airlines. It also serves as Virgin America's principal base of operations.[6] It is the sole maintenance hub of United Airlines. SFO has numerous passenger amenities, including a range of food and drink establishments, shopping, baggage storage, public showers, a medical clinic, and assistance for lost or stranded travelers and military personnel. It has the Louis A. Turpen Aviation Museum, the San Francisco Airport Commission Aviation Library, and permanent and temporary art exhibitions in several places in the terminals. Free Wi-Fi is available to the public in most of the terminal area.[7] Although located in San Mateo County, SFO is owned by the City and County of San Francisco. SFO Enterprises Inc. was created by the San Francisco Airport Commission to oversee its business purchases and operations of ventures such as owning Honduran airports.