The purpose of the proposed action is to develop facilities to support the West Coast basing of the Navy's new F/A-18E/F aircraft. Development of the larger, longer-range F/A-18E/F aircraft was necessary to provide an airframe capable of accommodating new weapons and weapon systems. It is necessary that these aircraft be based on the West Coast to provide a balance in the force structure and to be near the West Coast stationed aircraft carriers on which the aircraft deploy. The proposed action includes siting 164 F/A-18E/F aircraft, locating associated military personnel and family members, and providing associated training functions at the receiving installation. In addition to the increased staffing and equipment levels, the proposed action would increase Navy activity and flight operations at the receiving installation. Specific facilities will be required to support the training operations and associated personnel. The two installations considered for the West Coast base are Naval Air Station (NAS) Lemoore and Naval Air Facility (NAF) El Centro. NAS Lemoore is the preferred alternative evaluated in this environmental impact statement (EIS). This EIS evaluates the potential impacts to the human and natural environment that may result from development of facilities to support Navy basing of aircraft and personnel at a naval air station on the West Coast. This EIS has been prepared in accordance with the National Environmental Policy Act (NEPA) of 1969 as amended, the Council on Environmental Quality (CEQ) implementing regulations Title 40 Code of Federal Regulations (CFR) Parts 1500-1508, and the Navy's NEPA implementing regulations OPNAVINST (Office of the Chief of Naval Operations Instruction) 5090. 1B.