Proposed Air & Radiation Regulations
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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 06/23/2024
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| Regulation Title | Definitions and Control of Sulfur Oxides From Fuel Burning Equipment | | Purpose | Amendments to change the percentage of sulfur in fuel oil for equipment at stationary sources and to add in requirements during ozone season. | | COMAR | 26.11.09.01 and .07 | | Relevant Statutory Deadline | | | Public Informational and Formal Comment Opportunities | Public hearing will be held on July 15, 2025 | | Status | Published in the Maryland Register on June 13, 2025 |
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| Regulation Title | Supplement 35 to Regulations for Control of Ionizing Radiation | | Purpose | Amendments to 26.12.01 | | COMAR | TBD | | Relevant Statutory Deadline | | | Public Informational and Formal Comment Opportunities | | | Status | Published in the Maryland Register on May 30, 2025 |
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| Regulation Title | Heating Fuel Provider Reporting Program | | Purpose | New regulation to establish reporting for heating fuel providers of the amount of heating fuel delivered for final sale or consumption in Maryland to inform triennial greenhouse gas emissions inventory and development of future policies such as a Clean Heat Standard | | COMAR | 26.11.44 | | Relevant Statutory Deadline | | | Public Informational and Formal Comment Opportunities | TBD | | Status | Presented and approved by AQCAC on June 16, 2025. Notice of Proposed Action anticipated to be published in the Maryland Register on September 19, 2025. |
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| Regulation Title | Advanced Clean Trucks Amendment | | Purpose | The purpose of this proposed action is to adjust language which clarifies compliance determinations and sales reporting requirements for vehicle manufacturers and add an additional certification pathway for medium-duty zero-emission vehicles. This will result in increased time for manufacturers to make up deficits, and prevent earned credits from being double counted under both the Advanced Clean Cars II and Advanced Clean Trucks rule | | COMAR | 26.11.43 | | Relevant Statutory Deadline | | | Public Informational and Formal Comment Opportunities | TBD | | Status | Presented and approved by AQCAC on June 16, 2025. Notice of Proposed Action anticipated to be published in the Maryland Register on September 19, 2025. |
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