Fort Huachuca

Fort Huachuca entrance marker (public domain)

Fort Huachuca

Location

Located west of Sierra Vista in southeastern Arizona on the western flank of the San Pedro River Valley, Fort Huachuca consists of an irregularly shaped area of 115 square-miles bisected by Arizona State Highway 90 | View Site Map >

Contaminants of Concern (COCs)/ Risk Impact

Contaminants can include, but are not limited to, volatile organic compounds, polycyclic aromatic hydrocarbons, metals, radioactive waste (including containerized radioactive waste), unexploded ordnance (UXO) and chemical waste associated with explosives.

Soil I There is little to no health risk unless there is contact with skin or ingestion of contaminated soil.

Groundwater I If you are connected to a Public Water System (PWS) there is little to no risk of impact from exceedances because the water is filtered through the PWS for residential and business use | View Drinking Water Notices >

If you have a private well in the vicinity, we encourage you to test the well water. Not sure what to test for? Learn More >

Other I  Munitions and Explosives of Concern (MEC) may exist at a portion of the Eastern Artillery Area (EAA) Range 2, the Former Landmine Training Site, and at the Formerly Used Defense Sites (FUDS).  Do not approach, pick up, touch, or move suspected ordnance, munitions, or explosives debris as serious harm could result.

COCs at the site may change as new data become available.

Action Taken

Installation Restoration Program (IRP) Sites

The IRP is a comprehensive program designed to address contamination from past activities and restore Army lands to usable conditions.

  • East Range Shaft (FTHU-65) and South Range Landfill (FTHU-10): Five-Year reviews were completed in February 2020. Groundwater monitoring ended following completion of the October 2020 Remedial Action Completion Report. The report documents the completion of remedial action activities that included more than 20 years of groundwater monitoring. The sites were removed from the IRP upon completion of the final Well Decommissioning Report in September 2021.
  • Asphalt Batch Plant: The No Further Action Decision Document was completed in July 2019.
  • Vehicle Maintenance Facility Leaking Underground Storage Tank [LUST] site: The ADEQ closed the LUST case file 0155.54 in June 2018. The No Further Action Decision Document was completed in April 2020.

Military Munitions Restoration Program (MMRP) Sites

MMRP sites address UXO, discarded military munitions (DMM) and munitions constituents (MC) located on current and former defense sites. MMRP-eligible sites include other than operational ranges where UXO, DMM, or MC are known or suspected. Properties classified as operational military ranges, permitted munitions disposal facilities, or operating munitions storage facilities are not eligible for the MMRP.

  • EAA Range 2 (Munitions Response Site [MRS] 2):   A Remedial Investigation addendum was completed in 2020. 
  • Former Landmine Training Site (FTHU-017-R-01): Fieldwork for the Time Critical Removal Action was completed in January 2020 and the United States Army Corps of Engineers (USACE) submitted the final report in September 2020.

Formerly Used Defense Sites (FUDS)

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.

  • MRS 01 Charleston Maneuver Area: In 2019, the USACE implemented an Institutional Controls (ICs) remedy.
  • MRS 02 Artillery/Mortar Range, Range Safety Buffer Area: In 2019, the USACE implemented an Institutional Controls (ICs) remedy.
  • MRS 03 Artillery / Mortar Range, Potential Target Area A: The MRS 03 Decision Document was completed in  August 2017. The selected remedy includes Digital Geophysical Mapping and Surface/Subsurface Removal of Munitions and Explosives of Concern [MEC] to a depth of 2 feet below ground surface with ICs to Protect Current and Future Site Users.
  • MRS 04  Artillery / Mortar Range, Potential Target Area B: The MRS 04 Decision Document was completed in  August 2017. The selected remedy includes MEC removal from the surface with ICs to protect current and future site users.

Status

IRP Sites

Currently, there are no active IRP sites at the Fort Huachuca Army Base.

MMRP Sites

  • EEA Range 2 (Munitions Response Site [MRS] 2: The Feasibility Study for MRS 2a was completed in September 2022. The Proposed Plan for MRS 2a is currently under review. A No Further Action Decision Document is currently under review for MRS 2b. 
  • Former Landmine Training Site (FTHU-017-R-01): The Remedial Investigation is currently ongoing.

FUDS

  • MRS 01 - Charleston Maneuver Area: The first Five Year Review was completed in June 2021.
  • MRS 02 - Artillery/Mortar Range, Range Safety Buffer Area: The first Five Year Review was completed in June 2021.
  • MRS 03 Artillery / Mortar Range, Potential Target Area A
    Implement selected remedy (RA-C):
    • Phase 1 (ongoing) is to perform a dynamic detection survey, perform cued surveys using advanced EMI, select targets, and identify data gaps. The Phase 1 Remedial Design Completion Report is expected March 2024.
    • Phase 2 (future) will address subsurface removal and educational awareness implementation.
  • MRS04 Artillery / Mortar Range, Potential Target Area B: The USACE developed a Draft Final Remedial Action Completion Report as well as a  Land Use Control Implementation Plan that are currently in review.