The IRS headquarters at 1111 Constitution Ave. will remain closed for at least a month due to damage caused by torrential rains in the Washington, D.C. area. The basement flooded and damaged the building’s electrical, heating, and air conditioning systems.  From Reuters:

The IRS said it has executed business resumption plans to relocate the 2,400 employees who work in the building to 12 other sites in the Washington metro area.

The IRS said the building’s sub-basement, which holds all of the building’s electrical and maintenance equipment, was submerged in over 20 feet of water during heavy rains in Washington earlier this week. These systems appear to be 95 percent damaged or destroyed. The basement level was flooded with five feet of water, destroying the fitness center, food service canteens, and office equipment, fixtures and computers on these levels. Vehicles garaged in the building also were destroyed.

Other press reports:

• Associated Press