On March 28th 2011, we received advice from Nuclear Safety Commission of
Japan to conduct a sampling survey of the water on the first basement of
the turbine building of Fukushima Daiichi Nuclear Power Station as well
as to reinforce the sampling survey of seawater in order to secure safety
and to monitor the leakage of the water on the basement into underground 
and/or the sea. Pursuant to the advice, we have been continuously 
conducting the surveys.
                                                   (Previously announced)

On April 6th, 2011, we conducted nuclide analyses of radioactive
materials, the samples of which were collected from the water on the 1st
basement (sub drainage) of the turbine building at the site of Fukushima
Daiichi Nuclear Power Station. Because radioactive materials were
detected as a result, as shown in the attachment, we reported the result
to Nuclear and Industry Safety Agency as well as to the government of
Fukushima Prefecture today.

We are planning to conduct these surveys continuously. 

Appendix:Fukushima Daiichi The result of the nuclide analysis of the  
                           groundwater in the sub drainage(PDF 10.3KB)