Illinois Basin-Decatur Project Mt. Simon Sandstone, Decatur, Illinois Midwest Geological Sequestration Consortium NATIONAL ENERGY TECHNOLOGY LABORATORY The Midwest Geological Sequestration Consortium’s (MGSC) Illinois Basin-Decatur Project (IBDP) is a collaboration of the Illinois State Geological Society (ISGS), the Archer Daniels Midland Company (ADM), Schlumberger Carbon Services, and other subcontractors. The IBDP injected approximately 1 million metric tons of CO2 derived from biofuel production into a saline reservoir, the Mt. Simon Sandstone, in Decatur, Illinois. Operational injection started in November 2011 and was completed in November 2014. The IBDP effort is currently conducting post-injection monitoring. The Illinois Basin region covers most of Illinois, southwestern Indiana, and western Kentucky. The Mt. Simon Sandstone represents the primary CO2 storage resource of the Illinois Basin and the Midwest Region, with potential storage volumes in the range of 12 billion to 172 billion metric tons of CO2 .