Air & Radiation Regulations in Development
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Below is a list of air regulations which are in the process of being developed, reviewed, or revised by the Department. Notices of stakeholder meetings and associated materials may be found here .
Last modified 10/22/2025
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| Program | Climate Change Program/Air Quality Planning Program | | Regulation Title | Zero-Emission Heating Equipment Standard | | Purpose | New regulation to set NOx and GHG emissions standards for residential-scale space and water heating equipment manufactured for installation in Maryland | | COMAR | TBD | | Relevant Statutory Deadline | | | Target Effective Date | TBD | | Status | Under Development |
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| Program | Climate Change | | Regulation Title | Clean Heat Standard | | Purpose | New regulation for a market-based performance standard on heating fuel providers to reduce GHG emissions from the buildings sector | | COMAR | TBD | | Relevant Statutory Deadline | | | Target Effective Date | TBD | | Status | Under Development |
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| Program | Air Quality Planning | | Regulation Title | Consumer Products | | Purpose | Amendments to include updates from the Ozone Transport Commission’s (OTC) Phase V Model Rule | | COMAR | 26.11.32 | | Relevant Statutory Deadline | | | Target Effective Date | TBD | | Status | Under Development. Anticipate presenting to AQCAC in December 2025. |
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| Program | Air Quality Planning | | Regulation Title | Air Quality Controls at Gasoline Dispensing Facilities | | Purpose | New chapter to establish vapor controls using low permeation hoses and ECO nozzles at gasoline dispensing facilities | | COMAR | 26.11.46 | | Relevant Statutory Deadline | | | Target Effective Date | TBD | | Status | Under Development. The Department held a stakeholder meeting on October 16, 2025, and requested comments from stakeholders by December 1, 2025. Another stakeholder meeting will be scheduled following the receipt of comments. The Department tentatively plans to present to AQCAC in March 2026. |
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| Program | Radiological Health Program | | Regulation Title | State Radiation Control Fund Amendment | | Purpose | Amendments to 26.12.03 Update fee tables to current year and include the required Consumer Price Index | | COMAR | 26.12.03 | | Relevant Statutory Deadline | | | Target Effective Date | TBD | | Status | Under Development |
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| Number of Air Regulations in Development :5 |
