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: January 1, 2011

Point of Contact:
Randy Bryant
61 Forsyth Street, S.W.
Atlanta GA 30303 
Tel: 404-562-8794 
Email: bryant.randy@

Murray-Ohio Dump
Lawrenceburg, TN


Rock units are composed of limestone, siltstone, and shales. Groundwater flow at the site is generally east and northeast, with the water table approximately 40 to 50 feet below the surface. Groundwater is Class II (i.e., current or potential drinking water) with karst features.

Targeted Environmental Media:
  • - Fractured Bedrock


The on-Site square footage associated with ground-water exceeding Maximum Contaminant Levels (MCLs) is estimated to be 444,800 square feet. The corresponding contaminated pore volume is estimated to be 37,765,024 gallons, or 4,948,800
cubic feet.

Major Contaminants and Maximum Concentrations:
  • - Chromium (1.1-1000)
  • - Nickel (8.5-880)
  • - Zinc (30-1100)

Site Characterization Technologies:

No technologies selected.

Remedial Technologies:

  • - Other (monitoring)
No remediation of groundwater, just monitoring
Remediation Goals:

Cr-0.1 mg/L
Ni-0.1 mg/L


Total Cr concentrations in seeps ranged from <0.005 mg/L to a high of 2.1 mg/L

Nickel concentrations in seeps ranged from <0.04 mg/L to a high of 8.3 mg/L

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