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Tepco doesn’t measure radiation accumulated on the bottom of the sea http://fukushima-diary.com/2013/09/tepco-doesnt-measure-radiation-accumulated-on-the-bottom-of-the-sea/  by Mochizuki on September 29th, 2013 Following up this article.. Tepco “We don’t see Tokyo bay contamination” [URL]

Regarding the Pacific contamination, Tepco stated they analyze seawater but they take the samples only from the surface of the sea on 9/27/2013.

They commented when they collect seawater samples outside of Fukushima nuclear plant port, the samples are not taken from near the bottom of the sea.

Cesium-134/137 is assumed to be accumulated on the bottom of the sea, but Tepco doesn’t and is not planning to analyze it.

Even inside of the plant port, they collect the seawater samples mostly from the surface of the sea.

Tepco explained the measurement means was not decided by only Tepco, but also with the Fisheries Agency, Fukushima prefectural government and Ministry of Education, Culture, Sports, Science and Technology.

Also, Strontium-90 is water-soluble, so even if they analyze only the surface water, they can detect the marine contamination level.

According to Tepco and Japanese government, they don’t measure high level of radiation in their sampling points of the Pacific.