A proposed carbon capture pipeline across the Midwest by Summit Carbon Solutions is awaiting approval from Iowa and other states. Minnesota approved the permit for it last year.The five-state, $5.5 billion pipeline system would capture carbon dioxide from ethanol plants and send it to North Dakota for underground storage.As more places, including ours, pursue carbon capture projects, what rules and monitoring mechanisms need to be in place to make sure things work as intended to reduce greenhouse gas emissions?Eric Schaeffer is Executive Director with the Environmental Integrity Project, which just released a report on the current federal rules for carbon capture projects — and what might be missing.