CERCLA abandoned mine tailings ex-situ

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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U. S. Forest
Service / Environmental
Contractors, Inc.
Warren, New Hampshire

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Soil Solutions HMR treated the CERCLA abandoned mine tailings in Ore Mine Site Warren, NH ex-situ treatment of 50,400 tons of lead and zinc impacted soil.

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