Other mixed waste facilities we oversee

Our Nuclear Waste Program regulates other sites with mixed (radioactive and hazardous chemical) waste in Washington that aren't part of the Hanford cleanup.

Click on the tabs to find out more about the facilities, and read about the US Ecology disposal site below.


Framatome (formerly AREVA NP Inc.) is a French-owned company that operates a plant in Richland. The company makes nuclear fuel assemblies for commercial nuclear reactors located all over the world. The plant, in operation since 1972, employs about 600 people and is operated under a license from the Nuclear Regulatory Commission.

We regulate the plant's temporary storage of mixed waste that results from its operations until they are shipped offsite to an approved disposal facility. The current permit was issued in February 2010 and will remain in effect until February 2020. (Photo courtesy Framatome)

View the Permit
Columbia Generating Station Perma-Fix Northwest Puget Sound Naval Shipyard

US Ecology, Inc.

US Ecology is a disposal facility that is licensed by the state of Washington to receive commercial low-level radioactive waste. Located in the center of the Hanford site, the facility operates on 100 acres of land leased to the state by the federal government.

The US Ecology site is a waste landfill that has been in operation since 1965. Before 1993, the landfill accepted low-level radioactive waste from across the United States. Since that time, the facility has restricted disposal to waste originating in the eight states of the Northwest Interstate Compact (Alaska, Hawaii, Idaho, Montana, Oregon, Utah, Washington, and Wyoming) and the three states of the Rocky Mountain Compact (Colorado, Nevada, and New Mexico). The Washington State Department of Health oversees operations and facility closure.

Worker surveying containers at US Ecology.

Model Toxics Control Act study

The older parts of the facility contain chemical waste that was intermingled with radioactive waste before disposal practices were changed. An investigation under the Model Toxics Control Act, Washington’s environmental cleanup law, has been underway since 1999 to study the extent of the site's contamination, and to develop a remedial action to protect people's health and the environment. As we investigate chemical contamination at the site, we're coordinating with the state Department of Health to put a protective cover on older trenches that have been filled and are no longer being used for disposal.