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During Phase I, we will review the existing data in USAF, USEPA
and NHDES reports on Site 32 and nearby sites to determine as much
as possible about the subsurface geology and hydrogeology and the
chemical profiles in the plume. The USGS has performed geophysical
investigations in a few of the existing bedrock wells at Site 32
and in several bedrock wells nearby. This information will be useful
in fracture and plume characterization. Reviewing and analyzing
the first 1.5 years of natural attenuation monitoring data will
provide evidence of where biodegradation is occurring in the bedrock
at Site 32 and will be crucial in establishing regions where TCE,
DCE and VC are predominant. Their methods will include: self-potential
and natural gamma radiation, borehole flowmeter, electrical conductivity,
acoustic televiewer, temperature logs, and single hole directional
radar. BBC researchers will use omni-directional radar to characterize
the fractures in the bedrock surrounding the wells. This will help
us to better predict the bedrock fracture pattern at the site.
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