TEPCO has a countermeasure to the leak of highly concentrated, contaminated water after the reverse osmosis treatment. Sandbags. And some shiny steel "barrages" as TEPCO calls them.
From TEPCO's photos for the press (3/28/2012):
Note a heap of hoses in the 2nd photo, upper right. Also the hoses under the temporary bridge. How about the hose hanging on the side of the drain?
40 more years (or more) until they can even begin the decommission.