DC Gets Green Light for Synthetic Minor Air Permits
Published Date: 6/26/2026
Rule
Summary
The EPA is giving a thumbs-up to DC’s new plan that creates a special permit program called the synthetic minor permit. This helps local businesses control pollution by setting clear, enforceable limits, making the air cleaner and rules easier to follow. The new rules kick in on July 27, 2026, and affect companies that release certain pollutants, helping DC meet clean air goals without extra costs.
Analyzed Economic Effects
5 provisions identified: 3 benefits, 1 costs, 1 mixed.
DC approves synthetic minor permits
The EPA approved a SIP revision that creates a synthetic minor permit program in the District of Columbia, effective July 27, 2026. These permits let a source limit its Potential to Emit (PTE) so it can stay below major source thresholds and avoid major New Source Review (NSR) and Title V applicability.
Permit limits are federally enforceable
The synthetic minor permit conditions approved into the SIP are federally enforceable under Clean Air Act sections 110 and 113 as of July 27, 2026. That means permit limits set by DC can be enforced at the Federal level in addition to DC enforcement.
Helps DC meet air quality standards
The EPA found the SIP revision will enable DC to set federally enforceable limits for criteria pollutants and will not interfere with achieving or maintaining the National Ambient Air Quality Standards (NAAQS). This approval is intended to help DC achieve and maintain the NAAQS and is effective July 27, 2026.
General permits speed approvals, limit notice
DC may issue General (source category) permits after public participation before the general permit is issued, but when an individual source registers to be covered by a General Permit, DC does not require a separate public participation step. These rules take effect July 27, 2026 in DC.
EPA says no big small-business burden
The EPA certified this SIP approval will not have a significant economic impact on a substantial number of small entities and finds it is not a significant regulatory action, does not impose new information collection burdens, and does not create an unfunded mandate. These certifications are part of the final action effective July 27, 2026.
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