It appears that very high levels of radiation will be released into the atmosphere if certain steps in regards to the installation of the heat exchanger are not completed..  The information below has been translated from Japanese to English.  We can only hope that they get this completed.  With wind forecasts continuing to carry high levels of radiation to the west coast, this could only makes the situation in America that much more deadly.

Minutes of meeting between TEPCO and the government on the 1st May. “If the current situation continues, high density radiation will be released on the 8th May.” “Mr Hosono said: It is very important to go to the next step regarding the installation of the heat exchanger machine. For the concerned parties, be careful of the sharing of information with high sensitivity so that the same mistakes aren’t made again like the release of the radiated water previously.

The second and third emails aren’t related so we didn’t translate it. It isn’t clear from the text the way the radiation will be released. ie airborne or via water.

The aforementioned energy department English homepage is this: http://www.enecho.meti.go.jp/english/index.htm