The U.S. Department of Agriculture, Animal Plant Health Inspection Service (USDA, APHIS) is seeking to lease existing hangar space in Riverton, Wyoming, due to the area's susceptibility to flooding at or above the 100-year flood level. This procurement is part of the agency's compliance with Executive Order 11988 on Floodplain Management, which necessitates a review of potential alternative solutions; however, no practical alternatives were identified as the entire area is classified as an "Area of Undetermined Flood Hazard." Interested parties are invited to submit public comments regarding possible alternatives within fifteen days of this notice, and further information can be obtained by contacting Grace Connolly at grace.connolly@usda.gov or by phone at 612-336-3259 during business hours.