Stanley Kessler

⚠ Superfund · Ready for anticipated reuse

Long-term groundwater monitoring is being performed by the potentially responsible parties consistent with the site's Operation and Maintenance Plan. Groundwater monitoring is performed semi-annually.

Location

CityKing Of Prussia
CountyMontgomery County
StatePennsylvania
Coordinates40.08389, -75.35500

Contaminants of concern

Contaminated media

Cleanup timeline

  1. Initial Assessment Completed — 11/01/1979
  2. Proposed to the National Priorities List — 12/30/1982
  3. Finalized on the National Priorities List — 09/08/1983
  4. Remedial Investigation Started — 09/06/1989
  5. Final Remedy Selected — 09/30/1994
  6. Final Remedial Action Started — 04/09/1998
  7. Construction Completed — 11/02/1998
  8. Deleted from National Priorities List — Not Yet Achieved
  9. Most Recent Five-Year Review — 07/03/2024
  10. Achieved Sitewide Ready for Anticipated Reuse — 09/24/2014

EPA references

Other Superfund sites in Montgomery County

EPA-regulated facilities nearby

Understanding this Superfund site

Stanley Kessler is a federal Superfund site in Pennsylvania. 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: Ready for anticipated reuse. EPA considers this site ready for anticipated reuse, meaning cleanup has progressed enough for certain land uses. This does not necessarily mean all contamination has been removed — institutional controls like deed restrictions may limit how the land can be used.

EPA has identified 10 contaminants of concern at this site, including 1,1,1-trichloroethane, 1,1,2-trichloroethane, 1,1-dichloroethene. Contamination has been detected in groundwater.

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.