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TEPCO finds groundwater contaminated with radioactive cesium

TEPCO finds groundwater contaminated with radioactive cesium

Submitted By: 5 June 2013 No Comment

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Tokyo Electric Power Co. said Monday that it has detected radioactive cesium in groundwater samples taken from the premises of the crippled Fukushima Daiichi nuclear complex, reversing an earlier announcement that any contamination was negligible.

The announcement came as TEPCO is trying to secure the understanding of local fishermen over the dumping in the Pacific Ocean of groundwater that has been pumped out from wells at the site, saying it has confirmed that concentrations of radioactive substances are sufficiently low.

TEPCO had said radioactive cesium in the groundwater was at a level that could not be detected by an instrument at the Fukushima Daiichi complex. But the same sample was found to contain 0.22 becquerel of cesium-134 and 0.39 becquerel of cesium-137 per liter when checked at the Fukushima Daini plant, where radiation levels are lower.

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