Pursuant to the Defense Base Closure and Realignment Act of 1990, Rickenbacker Air National Guard Base is scheduled for realignment on September 30, 1994. This ElS, prepared in accordance with the National Environmental Policy Act, analyzes potential environmental impacts of disposal. Although disposal will have few direct effects, future use by others will create indirect effects. The document includes analyses of potential impacts a range of reasonable foreseeable reuses could have on local land use and aesthetics, transportation, utilities, hazardous materials/wastes, geology and soils, water resources, air quality, noise, biological resources, and cultural resources. All reuse alternatives, including the Proposed Action and the No-Action Alternative, incorporate aviation and land use areas. Potential impacts associated with the Proposed Action include land use conflicts, aircraft-related noise, traffic increases, increased air emissions and wetland disturbance. Proposed mitigations include restricting residential development near the airport; incorporation of FAA-mandated Stage III engines on all commercial aircraft by the year 2000; planned improvement to local roads; application of state control measures to reduce traffic trips, especially during peak hours; and avoiding wetland areas to the extent possible. Because the Air Force is disposing of the property, some of the mitigation measures are beyond Air Force control. Remediation of Installation Restoration Program sites will continue to be the responsibility of the Air Force. jg.