Ore Hill Mine Site Restoration

U. S. Forest Service / Environmental Contractors, Inc.

CERCLA Ore Mine Site Warren, NH

Project Details

  • Technology: Buffered Phosphate, specifically blended for SSTT, delivered in bulk by dump trailers and mixed with standard hydraulic equipment.
  • Type: Ex-Situ Remediation and On-site Containmanet & Disposal
  • In-Situ: Specialized equipment to create a slurry for surficial remediation of residuals.
  • Regulatory: CERCLA Removal Action—U.S. Forest Service
  • Type of material: Mine Tailings & Waste Rock
  • Contaminating metals: Lead and Zinc
  • Position: Treatment Technology Provider
  • Volume of media: 50,400 processed tons
  • Treatment Goals (Lead & Zinc):
    • SPLP: <0.1 mg/l & <0.18 mg/l
    • MEP: <0.7 mg/l & <5.0 mg
Soil Solutions was contracted to work on the CERCLA Non-Time Critical Removal Action performed by the U.S. Forest Service (USFS) at the Ore Mine Site in Warren, NH.

The project included remediation design and pilot testing, and the excavation and ex-situ treatment of 50,400 tons of zinc and lead-impacted abandoned mine tailings using dry treatment reagents.

Since the material was placed in an on-site repository, treatment goals set by the USFS were in the low part per million range, designed to meet groundwater standards.

Treatment success was judged by both SPLP and 10-day MEP analysis.

Soil Solutions also developed a liquid reagent application to remediate residual tailings in the 3.5-acre excavation area.

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