By Nara Schoenberg, The Chicago Tribune (July 23, 2023)
“Unlike natural gas, carbon dioxide migrates in fairly unpredictable ways, depending on the weather and terrain. It can continue on for miles in dangerous — or
even fatal — concentrations, according to Pipeline Safety Trust executive director Bill Caram.
Denbury used a standard method of calculating the potential impact on Satartia, according to a letter the company sent to federal regulators. But such modeling methods don’t typically account for complex topography, such as hilly terrain.
Some pipeline critics want the government to require a more sophisticated approach that can handle complex topography. But that approach is newer and by some accounts much more expensive, and it is still undergoing some testing.
That leaves a gap, in both knowledge and regulation.
“We don’t have a simple formula, and we also don’t yet have best practices,” said Caram.”