EPA is taking direct final action on revisions to the Maryland State Implementation Plan (SIP) submitted by the Maryland Department of Environment (MDE). The revisions adopt by reference the EPA definition of volatile organic compounds (VOC), update the Federal citation of the prevention of significant deterioration (PSD) requirements references in Maryland's definitions and general emission standards provisions, and revise the general records and information requirements for installations and sources. EPA is approving these revisions to the State of Maryland's SIP in accordance with the requirements of the Clean Air Act.