The Pennsylvania Environmental Quality Board (EQB) will soon publish amendments to the Department of Environmental Protection's (PADEP) regulations in 25 Pa. Code Chapters 121 and 129 for all major stationary sources of nitrogen oxides (NOx) or volatile organic compound (VOC) emissions, commonly known as the RACT III rule. The rule would require major sources of either or both of these air pollutants in existence on or before Aug. 3, 2018, to meet "reasonably available control technology" (RACT) emission limits and requirements by Jan. 1, 2023.