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 31, 2010

Point of Contact:
Romuald Roman
USEPA 1650 Arch Street
Mail Code: 3HS22
Philadelphia PA 19103-2029 
Tel: 215-814-3212 
Email: roman.romuald@
pa.gov

Butz Landfill
Jackson Township, PA


Hydrogeology:

Geologically, the Site falls on the border of the Appalachian Plateau and
the Valley and Ridge Physiographic Province. Locally, Camelback Mountain
forms part of the Pocono Plateau escarpment, with the Butz Landfill
situated at the foot of the southeast slope of the escarpment. The Site lies on the Long Run Member of the late Devonian Age Catskill Formation. The Long Run Member consists of alternating gray sandstone and red siltstone and shale. Fracturing in the bedrock is controlled by the thickness and brittleness of the beds. The Catskill Formation dips gently to the northwest in the Pocono Plateau but becomes more complexly folded in the Valley and Ridge Province located to the southeast.

Overlying the bedrock in the area are reddish glacial tills deposited during
the Pleistocene Epoch. Till deposits consist of a sorted and nonsorted
mixture of clay, silt, sand, pebbles, cobbles, and some boulders, and ranges
from 5 to over 25 feet in thickness. Developed upon the glacial till in the
immediate vicinity of the Site are the Lackawanna-Wellsboro-Oquaga Series Soils. These soils are very stony, moderately deep, well drained soils. The
topographic gradient in the area of the Site averages 5%, but exceeds 15% over some areas of the Site.

Hydrogeologically, there are two aquifers in the vicinity of the Site. The shallow water table aquifer (overburden aquifer) is located above the bedrock surface, and is the saturated portion of the glacial till. The depth to the ground water is greater than 14 feet at the site but is shallower southeast of the Landfill.

The other major aquifer in the area is the bedrock aquifer occurring in the
Long Run Member of the Catskill Formation. Well yields are higher in this aquifer than the water table aquifer and commonly range between 15-40
gallons per minute (gpm), but may exceed 75 gpm.

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

Contaminants:

The plume in layer three (bedrock) is about 5,800 feet long and 1500 feet wide. While depth is not specifically called out one rock well is set at 195 feet bgs.

Major Contaminants and Maximum Concentrations:
  • - Trichloroethene (15,700 µg/L)
  • - 1,2-Dichloroethene (950 µg/L)
  • - Vinyl chloride (13 µg/L)
  • - 1,1-Dichloroethene (14 µg/L)

Site Characterization Technologies:

  • - Pumping Tests
  • - Coring

Remedial Technologies:

  • - Pump and Treat
  • - Bioremediation (In Situ)
    • Reductive Dechlorination (In Situ Bioremediation)
Comments:
The pump and treat system was installed in June 2001 and has been operating since. Three of the extraction wells are set at 155, 175, and 195 feet bgs.

In 2009 a pilot treatment using emulsified vegetable oil was instituted.
Remediation Goals:

The cleanup goals are MCLs.


Status:

The pump and treat system has reduced the concentrations in monitoring wells but they remain above remedial goals. Emulsified oil injections continue.

http://cfpub.epa.gov/supercpad/cursites/csitinfo.cfm?id=0301833

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