LOUISIANA — State leaders rejoiced Thursday over the federal government’s decision to give Louisiana authority to permit and regulate the wells needed to store industrial carbon dioxide emissions underground, labeling it an important economic development milestone. Environmental groups have taken a notably different view and vow to remain vigilant against what they feel is an unsafe process. They snub proponents’ claims that carbon capture and sequestration (CCS) projects will allow Louisiana to make major strides toward achieving a green economy. …Most of the roughly 30 proposed for Louisiana have backing from the fossil fuel and petrochemical industries. The companies insist carbon can be safely contained underground using time-tested methods. …Louisiana became the third state to receive primacy over permits for Class VI wells, the type used for carbon storage, from the U.S. Environmental Protection Agency.