Air Plan Approval; Maryland; Clean Data Determination for the Baltimore, MD Nonattainment Area for the 2015 Ozone National Ambient Air Quality Standards
EPA determined that the Baltimore, MD nonattainment area has attained the 2015 ozone NAAQS, based on 2021-2023 monitoring data. This 'clean data determination' suspends certain planning requirements for the area, but does not constitute a final redesignation. Businesses in the area should note reduced regulatory burden for ozone-related emissions, but must continue to comply with existing permits and any state implementation plan requirements.
Aforeworn detected this change in the ESG & Climate Disclosure space on July 5, 2026 and published this briefing so affected operators are forewarned rather than caught off guard. It is rated Low urgency. Businesses operating in the Baltimore, MD nonattainment area, particularly those with emissions of ozone precursors (NOx and VOCs), including manufacturing, power generation, and transportation sectors. should confirm how it applies to their specific situation before acting. There is a time constraint attached: None immediately; the determination is effective upon publication (May 29, 2026).. Acting after that point can mean penalties, a lapsed licence, or lost eligibility — exactly the kind of surprise Aforeworn exists to prevent. Aforeworn monitors ESG & Climate Disclosure continuously and turns every detected change into a plain-English briefing like this one, so you always know first. Forewarned is forearmed.
What changed
EPA determined that the Baltimore area has met the 2015 ozone standard, suspending the requirement for the state to submit additional ozone attainment plans and reducing the likelihood of new emission control requirements for the area.
Who it affects
Businesses operating in the Baltimore, MD nonattainment area, particularly those with emissions of ozone precursors (NOx and VOCs), including manufacturing, power generation, and transportation sectors.
What you must do
No immediate action required. Businesses should monitor for any state-level changes to emission limits or permitting requirements that may follow this determination.
Deadline
None immediately; the determination is effective upon publication (May 29, 2026).
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