In the overburden, groundwater flows through fill, glacial lacustrine, and basal till material. The overburden exhibits low transmissivity in comparison with the bedrock. The principal water-bearing zone in the bedrock aquifer is the upper 10 to 25 feet, which contains many closely spaced horizontal fractures interconnected with vertical fractures. Aquifer tests performed in these horizontal fracture zones indicate hydraulic conductivities of up to 200 feet per day. Fracturing decreases with depth. A downward gradient exists between the first fracture zone found in the upper 5 feet of the Lockport Dolomite to the second fracture zone that lies approximately 8 feet below the first.
Targeted Environmental Media:
 Dense Non-aqueous Phase Liquids (DNAPLs) - Fractured Bedrock
The rock aquifer is contaminanted to at least 40 feet. Characterization below that has not been done.
Major Contaminants and Maximum Concentrations:
- 1,2-Dichlorobenzene (61,000 µg/L)
- 1,2-Dichloroethene (270,000 µg/L)
- Methylene chloride (13,000 µg/L)
- Tetrachloroethene (47,000 µg/L)
- Trichloroethene (22,000 µg/L)
- Vinyl chloride (26,000 µg/L)
- Chlorobenzene (21,000 µg/L)
- Benzene (15,000 µg/L)
- 1,4-Dichlorobenzene (26,000 µg/L)
- 1,3-Dichlorobenzene (19,000 µg/L)
- Pumping Tests
- Pump and Treat
Comments:
A pump and treat system for the overburden and shallow bedrock was constructed in 2009.
A ROD for the deeper bedrock system was issued in 2010.
Containment.
The system is too new for trends to be established.
http://www.epa.gov/region02/waste/fsfronti.htm
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