To demonstrate CO2 containment for IBDP, a team of geologists, geophysicists, and reservoir engineers developed and updated geological models of the subsurface and simulations of CO2 injection. As the IBDP geological model was developed, available data from wells, seismic and monitoring was integrated with the geological understanding of the Illinois Basin provide by the ISGS. This model is a digital representation of the structural and petrophysical (porosity, permeability, and facies) properties of the subsurface. The reservoir engineers then used this geological model and simulated CO2 injection down the wells to illustrate the expected vertical and horizontal extent of the CO2 migration. During the life of this project (Site Pre-Selection Feasibility, Pre-Injection, Injection), the development of these models and simulations was an iterative process which started from basic concepts with sparse data sets (2008) to becoming sophisticated models with abundant data sets (2020). During the project, periodic reports were prepared to document the current findings, this report summarizes the final geomodeling and reservoir simulation work that was completed in 2020.