Jiji Tsushin reports that Froilan Tenorio, former governor of the Northern Mariana Islands and a current Representative of the Commonwealth of the Northern Marianas (CNMI), offered to lease one of the islands to the Japanese government to store the disaster debris from Tohoku.
From Jiji Tsushin (5/11/2012):
A Representative of the Commonwealth of the Northern Marianas, which is known for the island of Saipan, held a press conference at the Miyagi prefectural government on May 11 and offered to accept the disaster debris from the March 11, 2011 disaster on an uninhabited island under [the Commonwealth's] control. However, according to the Ministry of the Environment, it will be quite unlikely as one of the conditions of exporting the waste is that the waste cannot be disposed domestically.
Representative Froilan Tenorio, who was the governor of the Commonwealth, said, "I hear that there are only few places in Japan that will accept the debris", and announced that he would lease the island of Pagan to store the debris. A volcanic eruption in 1981 forced the residents to evacuate the island.
However, the Japanese law on the waste disposal allows export of the waste only when it is not possible to dispose it in Japan and when the waste is recycled in the recipient country. The official in charge of the debris in the Miyagi prefectural government said, with mixed feeling, "We appreciate the offer, but it's impossible [to ship the debris] overseas."
A quick check on Google found a Youtube video of Mr. Tenorio speaking about the failure of his most recent effort to build a casino on the island of Saipan.