Note: 4/21/2021. This dataset is currently under review by the Department on Energy and Environment (DOEE) for updates. Underground Storage Tank (UST) locations. The dataset contains locations and attributes of Underground Storage Tanks, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies. A database provided by the Department of Energy and Environment identified Underground Storage Tank locations. The Underground Storage Tank (UST) branch's services protects human health and the environment from the adverse effects of petroleum, petroleum-related products and hazardous materials from USTs in the District of Columbia. This branch is organized into two programs: Underground Storage Tanks (UST) and Leaking Underground Storage Tanks (LUST).