"120 Tons of Contaminated Water Leaks at Fukushima Nuclear Plant"
"About 120 tons of contaminated water has leaked from an underground storage tank at the Fukushima No. 1 nuclear plant and may have mixed with underground water, Tokyo Electric Power Co. said April 6."
"TEPCO estimated that the water contained about 710 billion becquerels of radioactivity and leaked through the joints of protective sheets of the storage tank.
The water had passed through a filtration system before leaking, and its radioactivity level was about half that of water that has yet to be filtered, according to TEPCO."
SEE ALSO:Source: Asahi Shimbun, 04/08/2013