Approval and Promulgation of Air Quality Implementation Plans; Maryland; Reasonably Available Control Technology for Cement Kilns, Revisions to Portland Cement Manufacturing Plant and Natural Gas Compression Station Regulations, and Removal of Nitrogen Oxides Reduction and Trading Program Replaced by Other Programs and Regulations
The Environmental Protection Agency (EPA) is approving state implementation plan (SIP) revisions submitted by the State of Maryland. The revisions pertain to reasonably available control technology (RACT) for cement kilns, revisions to and recodification of certain provisions for Portland cement manufacturing plants (cement plants) and internal combustion (IC) engines at natural gas compression stations, and removal of the obsolete Nitrogen Oxides (NO<INF>X</INF>) Reduction and Trading Program that has been replaced by other trading programs or addressed in other regulations. EPA is approving these revisions in accordance with the requirements of the Clean Air Act (CAA).