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For the past ten years, The
Carel Corporation has provided environmental monitoring services to
an 80-acre hazardous waste disposal facility that began operation in
the 1960's. Three primary water-bearing zones are monitored at
the facility. Prior to a recent permit modification, the
groundwater monitoring network involved over 100 wells. Three
groundwater monitoring programs exist for the facility; a Compliance
Monitoring Program (CMP), a Corrective Action Program (CAP) and a
Piezometric Levels Program (PLP). The CMP and CAP were
instituted when hazardous constituents were detected in groundwater
and work in conjunction to determine and/or ensure that regulated
units are in compliance. The PLP provides information on
groundwater gradients, flow directions and flow rates.
Numerous wells are
significantly impacted by organic contaminants. Hence,
stringent sampling sequences were developed as well as other quality
control procedures in order to prevent cross contamination during
field activities. Routine field activities included quarterly
purging and sampling of monitor wells, water level measurements for
wells and piezometers, monitor well total depth measurements, and
non-aqueous phase liquid surveys. Routine reporting procedures
included potentiometric mapping, mapping of contaminant migration
rates, and statistical analysis of groundwater data.
Recovery Well
Recovered Volumes
Groundwater Surface Contour Map
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