1.6E+6 Bq/m3 of Tritium was measured from a deep well in the plant area of Fukushima (500m away from the reactor buildings), Tepco announced in their press conference of 4/4/2012.
Last time they measured beta nuclides from the same well on 11/19/2011, tritium was ND, which shows the underground contamination has been expanding since then.
From the press release of 4/4/2012, Tepco measured 1.3E+6 Bq/m3 of tritium from the sub drain of reactor 2, and 1.8E+6 Bq/m3 from the one of reactor5, which are the same level as what they measured from the deep well. As to tritium, underground water is as contaminated as sub drain of reactors.
[...] TEPCO says about 12 tons of wastewater leaked from a disconnected joint in the pipe. The company also says it believes that a large portion of the water has flowed into the ocean through a nearby drainage ditch.
The utility is trying to determine how the joint became disconnected, and how much water poured into the sea. [...]
Suwa: You believe measuring cesium-134 and cesium-137 is enough. Why?
Hosono: What can be measured by measuring cesium-134 and cesium-137, of all the measurements we have done so far, if we measure using cesium, then the rest of the nuclides, more than that to a great degree, in so-called radioactive materials, or in becquerels, on the level of radioactivity, there is no concern.
Did you get it?
Hosono did his utmost best by using all the words he had heard, clearly without understanding any of them, since March 11, 2011 - cesium, nuclide, radioactive materials, becquerels, radioactivity. He could have spared the embarrassment by simply saying "I don't know."
He is one of those politicians in their early 40s whom the mass media want to portray as the next prime minister, although he is being eclipsed these days by the mayor of Osaka who behaves like a kindergarten bully in a sand box. A great future either way for Japan and the Japanese.