Fort Riley

⚠ Superfund · Cleanup underway

Current activities include implementation of the remedy at OU9 and long-term monitoring required for the remedies at OU1, OU3, OU5, OU6 and OU8. Since 2020, the Army has been investigating potential releases of per- and polyfluoroalkyl substances (PFAS) at the site. Initial sampling results reported PFAS compounds above screening levels in groundwater.

Location

CityJunction City
CountyGeary County
StateKansas
Coordinates39.30665, -96.96091

Contaminants of concern

Contaminated media

Cleanup timeline

  1. Initial Assessment Completed — 10/12/1988
  2. Proposed to the National Priorities List — 07/14/1989
  3. Finalized on the National Priorities List — 08/30/1990
  4. Remedial Investigation Started — 08/23/1990
  5. Remedy Selected — 08/07/1997
  6. Final Remedy Selected — 06/22/2020
  7. Remedial Action Started — 11/01/2005
  8. Final Remedial Action Started — 11/22/2022
  9. Construction Completed — Not Yet Achieved
  10. Deleted from National Priorities List — Not Yet Achieved

EPA references

Understanding this Superfund site

Fort Riley is a federal Superfund site in Kansas. The Superfund program, created by Congress in 1980, addresses sites where hazardous substances have been released or threaten release into the environment. EPA scores potential sites using the Hazard Ranking System; those that score high enough are placed on the National Priorities List.

Current status: Cleanup underway. Active cleanup is underway, meaning EPA has approved a remediation plan and work is in progress. Cleanup timelines vary widely — some sites take decades depending on contamination depth, groundwater involvement, and funding availability.

EPA has identified 10 contaminants of concern at this site, including (z)-1,3-dichloro-1-propene, 1,1,2,2-tetrachloroethane, 1,1,2-trichloroethane. Contamination has been detected in groundwater, surface water, soil, solid waste.

If you live near this site and have health concerns, your state health department can provide site-specific guidance. EPA maintains a community involvement program for most NPL sites, and site documents — including the Record of Decision, five-year reviews, and public health assessments — are typically available through EPA's Superfund site profile.