The area in the vicinity of Central Landfill is typically underlain by glacial till, which in turn is
underlain by fractured granitic bedrock.
Targeted Environmental Media:
 Dense Non-aqueous Phase Liquids (DNAPLs) - Fractured Bedrock
A decision was made by EPA not to treat the plume but to concentrate on an 1/2 acre area where liquid hazardous wastes were discharged directly to the bedrock.
Major Contaminants and Maximum Concentrations:
- Chlorobenzene (50,000 µg/L)
- 1,2-Dichlorobenzene (42,000 µg/L)
- Benzene (2,000 µg/L)
- Copper (100 µg/L)
- Lead (210 µg/L)
- 1,4-Dichlorobenzene (NA)
- Beryllium (NA)
- Tetrachloroethene (NA)
- Trichloroethene (NA)
- Vinyl chloride (NA)
- Vertical Chemical Profiling
- Packer Isolation
- Multi-sampling port
- Pumping Tests
- Pump and Treat
Comments:
The one extraction well pump and treat system became operational in September 2006.
MCLs where appropriate
Pumping continues. There have been statistically significant decreases in many of the contaminant of concern concentrations.
http://cfpub.epa.gov/supercpad/cursites/csitinfo.cfm?id=0101277
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