On June 6, the Natural Resources Defense Council and Environment New Jersey filed notice at the New Jersey Superior Court Appellate Division that they intend to file a lawsuit charging that the New Jersey Department of Environmental Protection did not adhere to public notice and comment requirements of the New Jersey Administrative Procedure Act when it withdrew from the Regional Greenhouse Initiative. RGGI is made up of 9 northeastern states and is a cooperative cap-and-trade system for carbon dioxide emissions from electric power plants. According to a spokesman for the NRDC, New Jersey’s greenhouse gas program is covered by the state’s Administrative Procedure Act and therefore any decision to drop the RGGI mandate to purchase carbon dioxide allowances required a public comment opportunity.