Evaluation of in-situ restoration technologies for a DNAPL impacted fractured carbonate rock site at Smithville, Ontario
- Smithville Phase IV Bedrock Remediation Program, Smithville, Ontario (Canada)
A challenging problem facing the groundwater remediation industry is sites contaminated with Dense Nonaqueous Phase Liquids (DNAPLs). Considerable effort by the academic community is being directed towards the development of technologies to remove or destroy DNAPL at contaminated sites. Several of these technologies have now reached field-level demonstration projects. The Smithville Polychlorinated Biphenyl (PCB) site is contaminated with about 30,000 L of DNAPL. These contaminants have migrated through a shallow overburden thickness into the underlying fractured carbonate bedrock. This paper will highlight the results of a critical review of restoration technologies applicable to this site commissioned by the Smithville Phase IV Program. This paper will present a brief summary of the underlying premise, advantages, and challenges facing each in-situ technology reviewed. Site informational requirements for the technology application as it related to the Smithville PCB site will also be discussed since this can prove to be a costly endeavor. A tabular summary is expected to help remediation site managers with the state of the science concerning various restoration technologies. This review will also address related issues such as the difficulties associated with performance evaluation of the techniques. The majority of restoration research is proceeding in porous media settings, however, the application to fractured media will be evaluated and contrasted with porous media settings. Most fractured rock sites have an overburden component, thus technologies adaptable to both media may prove more advantageous.
- OSTI ID:
- 353682
- Report Number(s):
- CONF-970677--
- Country of Publication:
- United States
- Language:
- English
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