Proposed Air & Radiation Regulations

Proposed Actions provide the full text of proposed regulations and amendments, an estimate of the economic impact of an action on the regulated parties, the agency, other State or local agencies, and the general public. Proposed Actions also detail how the public may provide comments to an agency about a proposed regulation.

All Notices of Proposed Action (NPA) are published in the Maryland Register. Click here for the most current Notice of Public Hearings and Materials. While the Department strives to keep this content up-to-date, this list may not contain all proposed actions as this list is only updated periodically.


Last edited 9/21/2021​​​

Regulation Title
Vehicle Catalytic Converter Replacements
Clarify requirements​ for catalyst replacement to meet CARB standards
Relevant Statutory DeadlineNA
Public Informational and Formal Comment Opportunities
Public Hearing TBD
Approved at AQCAC June 16, 2020

Regulation TitleSupplement 31 to Regulations for Control of Ionizing Radiation
Incorporate NRC RATS 2018-1 and 2018-2 into COMAR
Relevant Statutory Deadline
Public Informational and Formal Comment OpportunitiesTo be proposed in the Maryland Register on October 22, 2021. Open for comments until Nov. 23, 2021.
StatusProposed for adoption

Regulation TitleVehicle Anti-Tampering Compliance
PurposeIt is illegal to remove or render inoperative any emission control device which was installed on a vehicle when it was manufactured, and the Department may perform inspections.
Relevant Statutory DeadlineNA
Public Informational and Formal Comment OpportunitiesVirtual Public Hearing on October 26, 2021, at 10am.
StatusApproved at AQCAC on June 14, 2021

Regulation TitleVehicle Emissions Inspection Program (VEIP) - Joint Promulgation
PurposeEnhance and clarify the VEIP, delay inspection for new vehicles by three years, and establish an OBD-only VEIP
COMAR26.11.22 and 11.14.08
Relevant Statutory DeadlineNA
Public Informational and Formal Comment Opportunities
Presentation at AQCAC on June 14, 2021. Public Hearing TBD
Under development

Number of Air Proposed Regulations : 4