We had been studying to implement sampling surveys on the ocean soil,
completed preparations and conducted the surveys on April 29, 2011. 
                                (Previously announced on May 3, 2011)

We conducted plutonium analysis for the ocean soil* sampled on September
12 and 15. As a result, Plutonium 239 and 240 were detected as shown in
the appendix.

Today, we reported the results to NISA and the government of Fukushima
Prefecture.

We will continuously conduct the same sampling surveys.

* The results of nuclide analysis for 3 major nuclides (I-131, Cs-134,
  Cs-137) were announced on September 13 and 16.
  

Appendix: Fukushima Daiichi Nuclear Power Station Plutonium Analysis 
          Result in the ocean soil (PDF 8.81KB)