Westbay Instruments

Westbay System Delivers Cost-Effective Groundwater Monitoring in Mountainous Region - Case study

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Courtesy of Westbay Instruments

CHALLENGE
After installing a number of traditional monitoring wells at the site, it became clear to the project scientists that more and better data would be necessary to properly characterize the complex groundwater flow system.

SOLUTION
The high cost (measured in both time and money) of installing conventional well clusters at high-elevation locations caused DCRG to consider other options.

RESULTS
Westbay System wells enabled DCRG to monitor the large number of zones required by the complexity of the site at a greatly reduced cost in comparison to other technologies.

High resolution data was needed to properly characterize complex flow system
In 1988, DuPontwas tasked with completing a groundwater investigation at the DuPont Belle, West Virginia, facility, as required by the U.S. Environmental Protection Agency's site Resource Conservation and Recovery Act (RCR A) Corrective Action permit. The focus of the investigation was a number of historically utilized solid waste management units in the 600 acre mountain area adjacent to the plant. The work was carried out by the DuPont Corporate Remediation Group (DCRG) and URS consultants.

After installing a number of traditional monitoring wells at the site, it became clear to the project scientists that more and better data would be necessary to properly characterize the complex groundwater flow system.

The plant is located in south-central West Virginia, a region with steep mountainous terrain and heavily dissected valleys. The 100 acre main plant, where agricultural and special chemicals are manufactured, lies on an alluvial terrace along the Kanawha River. The 600 acre mountain area is a contiguous property north of the main plant, characterized by bedrock consisting of multiple layers of interbedded sandstone, shale, coal, and claystone.

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