DGC Beulah Broom Creek Storage Facility #1

The DGC Beulah Broom Creek Storage Facility #1 is a Class VI CO₂ geologic storage project developed by Dakota Gasification Company to permanently store carbon dioxide captured from the Great Plains Synfuels Plant near Beulah in Mercer County, North Dakota. The approved storage facility covers approximately 15,979 acres and is designed to support up to six Class VI injection wells, including the Coteau #1–#5 wells converted from stratigraphic test wells and the proposed Coteau #6 well. The project is permitted to inject up to 2.7 million metric tons of CO₂ per year, corresponding to the full capture capacity of the Synfuels Plant, with injection constrained by a bottom-hole pressure limit of 90% of fracture pressure to protect reservoir and caprock integrity. CO₂ will be injected into the Broom Creek Formation at depths of approximately 5,900–6,200 feet, a saline sandstone reservoir with sufficient porosity and permeability to accommodate long-term injection. Containment is provided by regionally extensive confining units, including the Opeche Formation above and the Amsden Formation below, with more than 4,000 feet of vertical separation between the injection zone and the deepest underground source of drinking water.