In 2007 a group of citizens requested that the MDEQ create rules to regulate CO2 emissions.  When the request was denied an appeal was taken to the courts. The trial court held that under applicable Michigan law there was no clear legal right to the creation of specific rules regarding CO2 emissions. Nor was the Michigan air permitting scheme, which has no CO2 emissions regulations, deficient under the Michigan Environmental Protection Act. On February 9 these rulings were affirmed by the Michigan Court of Appeals.