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AWWA ACE70775
- Safeguarding Groundwater Quality at Geologic Carbon Sequestration Sites: An Illinois Basin Example
- Conference Proceeding by American Water Works Association, 11/01/2009
- Publisher: AWWA
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Geologic carbon sequestration involves the injection of carbon dioxide (CO<sub>2</sub>) intosuitable reservoirs such as the Mt. Simon Sandstone, which is the basal sandstone of theIllinois Basin. A monitoring, verification, accounting (MVA) program is an essentialpart of current carbon capture and storage (CCS) projects. The goals of an MVAprogram include providing an accurate accounting of stored CO<sub>2</sub> and a high level ofconfidence that the CO<sub>2</sub> will remain sequestered permanently. Through its RegionalCarbon Sequestration Partnerships, the U.S. Department of Energy has funded thisdemonstration project for the capture and storage of CO<sub>2</sub> from the Archer DanielsMidland ethanol plant in Decatur, Illinois. This project will test the capability of a deepsaline reservoir (the Mt. Simon Sandstone) to store CO<sub>2</sub>. Over a three-year period, onemillion tons of CO<sub>2</sub> will be injected into this sandstone at a depth of approximately6,500 feet (2,000 m) through an injection well that has been permitted as a Class IUnderground Injection Control (UIC) well by the Illinois Environmental ProtectionAgency.