Approval and Promulgation of Air Quality Implementation Plans; Maryland; Revisions and Amendments to Regulations for Continuous Opacity Monitoring, Continuous Emissions Monitoring, and Quality Assurance Requirements for Continuous Opacity Monitors
The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the State of Maryland. The revision pertains to changes and amendments to Maryland regulations for continuous opacity monitoring (COM or COMs) and continuous emissions monitoring (CEM or CEMs) and to an amendment adding requirements for Quality Assurance and Quality Control (QA/QC) as they pertain to COMs. EPA is approving these revisions to the COMs and CEMs requirements in accordance with the requirements of the Clean Air Act (CAA).