Decades in court: the history of the Ordot dump By Steve Limtiaco View Comments The Ordot dump was recognized as hazardous in the 1980s, but took decades to close. Here are some of the key events related to the dump: -Prior to 1950: The starting date of the dumpsite is unknown, but there is evidence that the site was used by the Japanese as a disposal area during World War II. The U.S. Navy continued using the site as a dump after the liberation of Guam. -1950: Ownership of the site is transferred to the government of Guam. -September 1983: The Ordot dump is placed on the National Priorities ...