Southern California Edison is keeping 3.6 million pounds of lethal radioactive waste at the shuttered San Onofre nuclear plant in San Clemente. The waste poses a significant threat to the health, safety and economic vitality of the region's more than 8 million residents. But Edison's plan for storing it is unnerving at best. The idea is to bury the spent fuel on site, about 100 feet from the ocean and just a few feet above the water table. Edison has already begun transferring the waste from cooling pools into specially designed steel canisters. The containers are prone to corrosion and cracking, and cannot be monitored or repaired. Work crews even discovered a loose bolt inside one of the canisters earlier this year. But flawed storage containers are just one of many worrisome aspects of the scheme. San Onofre sits on an active earthquake fault, in an area where there is a record of past tsunamis. The ocean is expected to keep rising over the next few decades, bringing seawater closer to the canisters. If hairline cracks or pinholes in the containers were to let in even a little bit of air, it could make the waste explosive. Unlike the case of Fukushima, there are no federal or state evacuation plans for a disaster at San Onofre. Experts say there are safer storage configurations that Southern California Edison could implement. But these are all short-term solutions. The only real long-term solution is for Edison to develop adequate storage technology - a system that is not prone to severe leaks.