How many active USTs and UST Facilities are known to DDOE?
As of April 2010, there are approximately 628 active UST Facilities and 1069 active UST tank systems in the District of Columbia, including federal and district-only regulated tanks. There are about 300 active federally regulated UST facilities in the District and 618 tanks (excluded heating oil tanks). Significant Compliance Inspections (SOC) of the federal facilities are conducted at least once every 3 years by EPA and DDOE.