U.S. Army Corps of Engineers
The Spring Valley Formerly Used Defense Site (FUDS) consists of approximately 660 acres in the northwest section of Washington, D.C. During the World War I‐era, the site was known as the American University Experiment Station, and was used by the U.S. government for research and testing of chemical agents, equipment and munitions. Today, the site encompasses approximately 1,600 private properties, including several embassies and foreign properties, as well as the American University and Wesley Seminary.