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The FAA said in a statement Monday that fumes from construction work got into the control room at a facility in Leesburg, Virginia, that handles high altitude flights over the area. The FAA said the facility was ordered evacuated by local fire officials around 6:40 p.m. The FAA said that as a result of the evacuation, the facility stopped accepting new flights to handle and handed off airborne flights to other traffic control facilities.
According to WRC, air-traffic controllers were cleared to re-enter the building at 9 p.m.
Update via #RIC Ops: Washington Center has lifted ground stop and planes should be departing soon.