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| Leaking
Underground Storage Tanks, Fractured Bedrock Analysis.
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The Beale Air Force Base Clinic is one
of H&A’s newer projects and is in the preliminary
planning stages. H&A’s approach to this project is
driven by our experience at the Capehart Service Station, Beale
AFB, which is also situated in a fractured bedrock aquifer.
We have submitted a RCRA Release Assessment Workplan to Base
personnel and to the California Central Valley Regional Water
Quality Control Board outlining field activities to be performed
for the characterization of the fractured bedrock aquifer, petroleum
hydrocarbon contamination, and LNAPL reported to be present
in the vadose zone and groundwater.
H&A intends to utilize mud rotary and air rotary drilling
technologies for continuous rock coring and the advancement
of exploratory borings at the Clinic. Various geophysical surveys
will be performed to identify fractures with groundwater flow.
Each of the borings will then be fitted with a dedicated micro
purge BarCad ® Sampling System conducive to the low
flow conditions present in the fractured bedrock aquifer, as
seen at the Capehart Service Station.
H&A anticipates that interim remedial action may be performed
in the area of reported high MTBE concentration and may consist
of pumping and off site disposal. Updates to this project will
be posted as the project develops. |
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