Monitoring Wells Installed at Carbon Sequestration Site

The ISGS drilling crew completed installation of four groundwater monitoring wells at the Illinois Basin Decatur Project site. These wells are required as part of the University of Illinois permit for the carbon dioxide (CO2) injection well. The wells will used to monitor the groundwater quality of the lowermost U.S. Drinking Water limit (USDW), the zone in which water has 10,000 mg/L total dissolved solids. The Illinois Environmental Protection Agency designated the Pennsylvanian bedrock as the USDW at the Archer Daniels Midland site. The wells are installed to a depth of about 145 feet below ground surface. Core samples and logs were collected from each well at the time of installation. The wells are currently being developed, and sampling should begin in July.