Minor New Source Review (NSR) Permitting

Current understanding

To be populated as evidence accumulates.

2026-09-25 — Clarifying the Scope of “Applicable Requirements” Under State Operating Permit Programs and the Federal Operating Permit Program: cross-connection with title-v-operating-permits: The rule limits when Title V operating permit reviews can second-guess NSR preconstruction permitting decisions, defining the interface between the two permitting programs. (novelty: 2)
2026-08-19 — Air Plan Approval; South Carolina; Minor Source Permit Program Revisions: EPA proposed approval (2025) of South Carolina SIP revisions updating the state’s minor source air-permit program, including preconstruction review procedures for smaller pollution sources being built or modified. (novelty: 2)