EPA Superfund site
PIKE HILL COPPER MINE
Exposure status: insufficient data
Data limitations: Proximity to a Superfund site boundary does not mean your property is contaminated. EPA site boundaries show the area designated for cleanup, not the full extent of contamination. Groundwater plumes can extend beyond site boundaries. This tool shows publicly available EPA federal data. It is not affiliated with or endorsed by EPA, and is not a substitute for a professional environmental assessment.
About this site's exposure pathways
As of May 2026, the Pike Hill Copper Mine Superfund site is considered “Insufficient Data to make a Human Exposure evaluation” (HEID). Based on current information, metals are the constituents detected most frequently in soil, mine wastes, sediment, groundwater. Given the very large size and nature of the site it remains largely unsecured. EPA regularly responds to community requests for information on an as needed basis through phone calls, email updates and site visits.
In the interim, EPA has completed an Engineering Evaluation/Cost Analysis (EE/CA) in 2022 leading to an Action Memo which was signed on September 30, 2022. The first phase ("Phase 1") of the Non-Time-Critical Removal Actions (NTCRA) is complete (in-situ stabilization of mine waste near protected bat hibernacula). Phase 2 includes the excavation, consolidation and capping of 82,000 cubic yards of mine waste. The removal design for Phase 2 is ongoing, and once complete (i.e., Summer 2026) it is anticipated to take up to a year to make a contract award. The duration of site activities associated with Phase 2 is significant (likely 2 -3 years) – after which a groundwater remedial investigation and feasibility study (RI/FS) will commence. Human Health risks to groundwater will likely not be known until at least FY 2029 (i.e., the year that a Human Exposure determination is likely is 2029).