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: June 8, 2004

Point of Contact:
Kathy Davies
EPA Region3 1650 Arch Street
Philadelphia PA 19103 
Tel: 215-814-3315 
Fax: 215-814-3015
Email: davies.kathy@
epa.gov

EPA site
Warminster, PA


Hydrogeology:

Alternating layers of mudstone and fine to coarse
grained arkosic sandstones underlying a thin
veneer of clayer residual soils. The rock units
generally strike northeast and dip 7 degrees to
the northwest.

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

Contaminants:

Approximately 400 feet x 1800 feet x 150 feet deep.

Major Contaminants and Maximum Concentrations:
  • - Trichloroethene (100,200 µg/L)
  • - Tetrachloroethene (var)
  • - cis-1,2-Dichloroethene (var)
  • - Carbon tetrachloride (var)

Site Characterization Technologies:

  • - Borehole Geophysics
    • Single Point Resistance
    • Natural Gamma
    • Caliper
    • Acoustic Televiewer
    • Video Camera Televiewer
  • - Fluid Loggings
    • Temperature
    • Conductivity/Resistivity
  • - Flow
    • Tracer (Brine)
    • Heat Pulse Flowmeter
  • - Vertical Chemical Profiling
    • Packer Isolation
    • Cluster Wells

Remedial Technologies:

  • - Pump and Treat

Remediation Goals:

None provided


Status:

As of June 8,2004 the site was conducting pump and treat containment.

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