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The Carel Corporation was
retained to evaluate the groundwater monitoring system at a waste
disposal facility located in Central Oklahoma. The system was
originally designed and installed by others in the early 1990s and
involved clustered monitoring wells to monitor various shallow,
intermediate and deep saturated zones.
The Carel Corporation gathered additional site-specific geologic
information from various sources and combined it into a series of
geologic correlations to better delineate the hydrostratigraphic
groundwater distribution. Information used included boring logs,
geophysical logs (gamma and resistivity), geochemical data (stiff
plots), monitor well construction information and groundwater level
measurements. The combination and consideration of all the available
information allowed for the identification of a continuous water
bearing stratum underlying the facility that conforms to the
applicable regulations.
Numerous monitor wells were approved to be decommissioned as they
were determined to monitor discontinuous perched zones. The revised
groundwater monitoring system is technically superior and is
monitored at a significant savings to the client, as opposed to the
former system.
STIFF Diagrams
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