EPA Lets Firms Build Non-Polluting Parts Before Full Air Permit Approval
Published Date: 5/13/2026
Proposed Rule
Summary
The EPA is updating rules about when companies can start building big projects that might affect air quality. Now, they can begin building parts that don’t release pollution before getting a full air permit, making things clearer and easier. This change mainly affects businesses planning major construction and could speed up projects without extra costs, but comments are due by June 29, 2026.
Analyzed Economic Effects
2 provisions identified: 2 benefits, 0 costs, 0 mixed.
Build Non‑Emitting Work Before NSR Permit
If you are building a major facility that needs an NSR permit, the EPA is proposing you could begin constructing non‑polluting components (for example, utility infrastructure, concrete pads, and some building components) before getting a final NSR permit. The change applies to major stationary sources subject to the PSD or NNSR programs and is implemented by proposed revisions to definitions in 40 CFR 51.165, 51.166, 52.21, and part 51 appendix S.
Tribal NSR Definitions Updated
In areas of Indian country, the EPA proposes revising the Tribal NSR rules at 40 CFR 49.152 to change and align definitions (renaming "begin construction" to "begin actual construction" and revising "commence construction") for minor sources and minor modifications at existing major sources. This affects permitting rules that apply in Indian country under the Tribal Minor NSR and Tribal Nonattainment NSR programs.
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Key Dates
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