5.According to the Congressional Research Service (using NEI data), there were 62,683 metric tons of commercial spent fuel accumulated in the United States as of the end of 2009.
a.Of that total, 48,818 metric tons – or about 78 percent – were in pools.
b.13,856 metric tons – or about 22 percent – were stored in dry casks.
c.The total increases by 2,000 to 2,400 tons annually.