Early CO2 Sequestration Monitoring Shows No Shallow Groundwater Impact

Illinois State Geological Survey scientists Bracken Wimmer and Abbas Iranmanesh continue to develop the groundwater monitoring network that is part of the monitoring, verification, and accounting (MVA) program for the Archer Daniel Midland Phase III carbon dioxide (CO2) sequestration site. The researchers continue to collect groundwater and gas samples from the enhanced coal bed methane and oil recovery pilot projects. These samples are used to monitor groundwater quality to determine if CO2 injection operations are affecting shallow groundwater quality. To date, water quality data indicate that project activities have not impacted local water quality. Monitoring of the gas concentrations in project wells will determine the performance of the coal seam with respect to CO2 injection.