Among the witnesses to testify were Benjamin Grumbles, Assistant Administrator at the Office of Water for the EPA, Dr. Robert Burruss, Research Geologist from the U.S. Geological Survey, and Scott Klara, Director from the Strategic Center for Coal at the Department of Energy. Each believes that site selection is crucial to the success of carbon sequestration. Klara said, “The ultimate success of sequestration will hinge, in part, on our ability to measure the amount of carbon dioxide stored on a site, prevent environmental impacts and mitigate.”
Many members of Congress questioned the effects of long term sequestration and whether enough research has been done on the matter. Rep. Solis (D-CA) worries about how an earthquake would effect the sequestered carbon dioxide. Rep. Shadegg (R-AZ) wants more research to be done in the area so that it does not end up being a mistake to move forward with the technology. He questioned whether research has been done on the environmental impact or damage that has resulted from injecting carbon dioxide for enhanced oil recovery.