Groundwater Monitoring at an Active Industrial Solid Waste Landfill


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Groundwater Monitoring at an Active Industrial Solid Waste Landfill

Cox-Colvin provides professional support for the groundwater monitoring program at this operating, midwestern industrial solid waste landfill. The landfill is operated in accordance with rules for industrial and residual solid waste landfills. The surficial geology of the area is characterized by Wisconsinan-aged glacial sediments, mostly lake deposits of silt, clay and clayey till overlying carbonate rock.

This industrial solid waste landfill, which is approximately 10 acres in area, obtained its permit to operate in 1990, and is used for the disposal of industrial solid waste such as incinerator ash and wastewater treatment plant sludge. The landfill was constructed with a composite bottom liner system, composed of a synthetic liner and recompacted clay. The landfill also has a leak detection system and a leachate collection system.

Cox-Colvin has updated the Groundwater Monitoring Project Plan to streamline the monitoring process and eliminate potential violations. As part of that, Cox-Colvin created an online database of historical and compliance documents, monitoring data, correspondence and reports for the facility. We have established a strong partnership with plant personnel to ensure that the landfill stays in compliance with the groundwater monitoring requirements. We assist the plant with performing the semiannual groundwater monitoring, review and validate the laboratory data, perform statistical analysis of the data, and prepare the semiannual monitoring reports. Cox Colvin also provides responses to state comments, and counsels the client on ways that the program can be improved.