The site includes fractured shale bedrock that includes a ground water aquifer.

• Dense Non-aqueous Phase Liquids (DNAPLs)
• Fractured Bedrock

• Trichloroethene (Not provided)
• Tetrachloroethene (Not provided)
• cis-1,2-Dichloroethene (Not provided)

• Borehole Geophysics
  • Other
• Flow
• Coring

Comments:
Characterization of the site was performed via multiple multilevel sampling systems, including borehole geophysical and hydrological logging and interflow testing, volatile organic compound subsampling from the rock core, rock matrix characterization, and matrix interaction with permanganate (performed in a laboratory).

• Chemical Oxidation (In Situ)
  • Permanganate

The objective of the project was to reduce the mass flux of contaminants exiting the site.

Decreased conductivity of the injection wells has impeded the delivery of NaMNO4 and thus in situ oxidation. It is believed that manganese dioxide has precipitated either within or near the injection boreholes or within the hydraulically connected fractures.

References:
Goldstein, Ken, Vitolines, Andrew R, Navon, Daria, Chapman, Steven, Parker, Beth, and Al, Tom A. Full-Scale Permanganate Remediation of Chlorinated Ethenes in Fractured Shale: Part 1. Site Characterization and Design and Implementation of Full-Scale Remedy. Presented at the 2007 U.S. EPANGWA Fractured Rock Conference: State of the Science and Measuring Success in Remediation. Portland, ME. September 24-26, 2007.

Chapman, Steven, Parker, Beth, Goldstein, Kenneth J., Vitolins, Andres R., Navon, Daria, and Al, Tom A. Full-Scale Permanganate Remediation of Chlorinated Ethenes in Fractured Shale: Part 2. Three Year Interim Evaluation of Treatment Performance. Presented at the 2007 U.S. EPANGWA Fractured Rock Conference: State of the Science and Measuring Success in Remediation. Portland, ME. September 24-26, 2007.