Formerly Used Defense Sites

Formerly Used Defense Sites (FUDS)

U.S. Department of Defense (DOD) is responsible for the environmental restoration (cleanup) of properties that were formerly owned by, leased to or otherwise possessed by the United States and under the jurisdiction of the Secretary of Defense prior to October 1986.


There are 141 eligible properties within the inventory of Arizona for Formerly Used Defense Sites (FUDS) located throughout Arizona. 

Contaminants of Concern

Contaminants found on FUDS sites can vary depending on how the property was used. Contaminants in soil from UST spills include petroleum hydrocarbons and benzene. There is a possibility of contamination from unexploded ordnance (UXO) and from skeet ranges with polyaromatic hydrocarbons (PAHs) and lead.  Contaminants of concern at the site may change as new data become available.

Public Health Impact

Polyaromatic hydrocarbons may pose a risk to human health. UXO debris may pose an explosive safety hazard. Discovery of UXO should be reported to the local law enforcement authorities and left untouched.

Action Taken

The Military Munitions Response Program (MMRP) is currently working on completing three remedial investigations (RIs) at FUDS designated properties including the Kingman Gunnery Range, Fort Huachuca, and Sahuarita Air Force Range.

The Kingman Gunnery Range site investigation was completed in 2010, and involved sampling primarily for lead from bullets used during WWII training exercises at the small arms ranges, berms, malfunction range and former moving target base. A former skeet range that was developed into a residential community was investigated and sampled for polyaromatic hydrocarbons (PAHs) which was found to be in exceedance of the Arizona soil remediation levels. The U.S. Army Corps of Engineers (USACE) completed a Time Critical Removal Action (TCRA) at the former skeet range area between 2013 and 2014 to remove contaminated surface soil from 55 affected residential properties at the source area. Following the TCRA, 66 additional parcels within the residential community were sampled and investigated from December 2014 to February 2017 as part of a Remedial Investigation (RI). A public open house meeting was held on August 21, 2018 to update the community of the RI results and the continued efforts needed for the RI. This included further investigation and sampling of remaining properties as step outs from the source area that was known as Phase I. ADEQ approved the Quality Assurance Project Plan for Phase I on September 13, 2018 and the RI step out sampling was completed for 60 parcels in October 2019. The RI is still ongoing.