Air decontamination to begin at stricken nuclear plant, Deutsche Presse-Agentur, May 2, 2011:
[L]ocal officials in Koriyama City, 50 kilometres west of the plant, said they found sewage sludge containing 26,400 becquerels of radioactive caesium per kilogram, Jiji Press reported citing local government officials.
Slag at the plant, made from reduced sewage, had 334,000 becquerels per kilogram, Jiji said.
The caesium could have been released by explosions and fires at the nuclear plant after the quake and tsunami, and been washed into the sewage system by rain, the officials were quoted as saying. [...]
Published: May 2nd, 2011 at 12:27 pm ET