OSAKA -- An advanced underground waste disposal and collection system developed for Rinku Town, the coastal business center adjacent to the offshore Kansai International Airport, is facing closure less than five years after it first came into operation, it was learned Friday.

After spending 5.8 billion yen to build the computer-operated system, taxpayers in Osaka Prefecture now face the prospect of another 1 billion yen bill to pay off the real estate developers who invested their own money to accommodate the system.

The Bureau of Public Enterprise plans to present a 1 billion yen funding request to the prefectural assembly this month as compensation for companies that invested in the waste disposal system, Osaka Prefectural Government sources said.