TEPCO MUST reduce the potential for catastrophic exposure to the general population of Japan by burying these out-of-control rods.
Tepco's best plans at this point are basically, "We will repair the unrepairable cooling systems that were blown to pieces by the previous explosions inside buildings that we won't be able to enter for another 100-20,000 years."
The greatest risk to human life remains the full criticality of a reactor core, corium fully melting through containment, and an explosion and subsequent ejection of fissioned isotopes (plutonium, strontium, cesium, iodine) by the H20 fission products (explosive H2 gas and O2 to fuel it), temperature reactions, and pressure explosions from superheated materials rapidly expanding.
The ejection of a reactor's worth of disintegrated plutonium, uranium, and other fission products high into the atmosphere would be absolutely devastating, and is still a very real possibility. Japanese seismologists have said an 8.0 quake is very likely within the next two months... that is exactly the kind of event that would send Fukushima beyond the tipping point.
The most feasible way of mitigating this magnificent atmospheric hazard is to push the nearby Fukushima landscape up against the sides of the reactor buildings, fill the reactor buildings with borax and sand, and then bury the reactor buildings under as much dirt as can be scraped from the nearby farmlands into a mountain of dirt over the entire complex. The dirt can be capped and offgassing wells installed, as well as water injection wells drilled through the earthen cap to provide water and cooling to the hot reactor cores. The abundant supply of earth and the ability to interact with the cores with cooling water, with the movement facilitated by the radiation shield itself (the soil), make dirt a far superior option to concrete entombment.
Holes can be drilled into the base of the reactor buildings and pumps installed to recycle cooling water that is pumped into the top to cool the reactor cores. Shallow wells should also be installed beneath the reactor buildings to capture contaminated water. Captured irradiated water can be pumped back into storage ponds created by the dozing and gathering of material to place around the reactor buildings. Wells will also need to be installed downgradient of storage ponds to pump back into themselves in attempt to keep routes of exposure limited and loops closed.
Additional wells should be drilled seaside to attempt to create a sliver of dry zone between the contaminated groundwater under the plant and the marine zone water. Every gallon pumped back to the sea by interception wells is another gallon that can't interact with the contamination source water.
TEPCO can not act fast enough on this, and it is a shame a month has already been wasted. If this effort had started at the beginning, there would already be a cap on the plant and the 124 terabecquerels of radiation being released every day would be vastly reduced.... but that's not the greatest benefit or the reason to cover this complex. The potential for a full on reactor explosion is what should be driving this effort to suppress the potential 'China Syndrome' explosion.