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: November 29, 2006

Point of Contact:
Marco Odah
10100 West 87th Street
Suite 204
Overland Park KS 66212 
Tel: 913-302-3338 
Fax: 913-438-4388
Email: modah@
artinwell.com

Confidential Client/Industrial Laundry
Allentown, PA


Hydrogeology:

Soil types consist of silty clay to depths ranging from 10 to 60 feet underlain by limestone and dolomite (Epler Formation, Beekmantown Group). Groundwater flow occurs in secondary porosity along solution channels or bedding and fracture planes in the rock. Depth to groundwater at the site is approximately 90 feet below grade.

Targeted Environmental Media:
  • - Dense Non-aqueous Phase Liquids (DNAPLs)
  • - Fractured Bedrock

Contaminants:

Major Contaminants and Maximum Concentrations:
  • - Tetrachloroethene (402 µg/L)

Site Characterization Technologies:

  • - Other (Monitoring wells)

Remedial Technologies:

  • - Chemical Oxidation (In Situ)
    • O2
  • - Soil Vapor Extraction
    • With Air Stripping
  • - Bioremediation (In Situ)
    • Aerobic Oxidation
  • - Other (ART Technology)
Comments:
Within nine months, the ART Technology had reduced groundwater contamination from 403 ug/l to below the Action Level of 50 ug/l at the point of compliance well more than 40 feet from the nearest ART Technology installation.
Remediation Goals:

50 ug/l PCE


Status:

The site has received official closure from the state.


Lessons Learned:

Radius of influence at a minimum of 40 feet.

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For more information on Fractured Bedrock, please contact:

Ed Gilbert
Technology Assessment Branch

PH: (703) 603-8883 | Email: gilbert.edward@epa.gov