Via NHK World: Water leaks found near Fukushima tank barrier. Click through to see a video of the report.
The operator of the damaged Fukushima Daiichi nuclear power plant says 1.6 tons of radioactive water is estimated to have drained into the ground from the barrier surrounding tanks storing contaminated water.
TEPCO officials said they found water coming from the barrier's foundation joints on Saturday afternoon.
They also said they measured 93 becquerels per liter of strontium 90 in the water remaining within the fence. The radiation level is about 9 times the national limit for water allowed to be released from the barrier.
The officials said they believe cause of the leakage was deteriorated joints.
They also said that, from the radiation level, they believe the leaked water is not radioactive water from the tanks but rainwater that had collected inside the fence.
They added that they think the high level of strontium 90 was detected because the rainwater absorbed radioactive materials that have been spreading in the environment since the March 2011 accident.
They confirmed that no radioactive water leaked into the ocean, as there are no drainage systems leading to the sea near the site.
Meanwhile, Mainichi Shimbun reports that the Fukushima cleanup will have to be extended for another three years.