U.S. EPA Contaminated Site Cleanup Information (CLU-IN)

U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division

Fractured Bedrock Project Profiles

Last Updated: December 10, 2007

Point of Contact:
Marco Odah
P.O. Box 2697
Olathe KS 66063 
Tel: 913-438-4384 
Fax: 913-438-4388
Email: modah@

Manufacturing Facility
Not provided, NC


The site consists of a layer of saprolite and weather material overlying fractured rock.

Targeted Environmental Media:
  • - Fractured Bedrock


Major Contaminants and Maximum Concentrations:
  • - Dioxane (40,000 µg/L)

Site Characterization Technologies:

No technologies selected.

Remedial Technologies:

  • - Other (Accelerated Remediation Technologies, LLC (ART), uses in-well technology combining in situ air stripping, air)
The site was used to compare the Accelerated Remediation Technologies (ART) In-Well Technology to a multi-point soil vapor extraction/air sparging system.
Remediation Goals:

Not identified in the reference.


The concentration of 1,4-Dioxane was reduced by up to 90 percent within 90 days. Compared to the removal rate of multi-point soil vapor extraction/air sparging system, the removal rate of the ART well was 80 times greater. Full-scale implementation on the site confirmed the effectiveness of the ART in treating 1,4-Dioxane.

Lessons Learned:

Odah, Marco M. The ART in Well Technology: Effectively Treating 1,4 Dioxane and Chlorinated Solvents in Fractured Rocks. 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.

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