[Regulatory Update] US EPA proposes rule allowing partial construction before NSR permits — widening scope for data centres, manufacturing facilities to break ground early
For large capital projects, the timing of environmental permitting directly affects the construction schedule, so even a narrow change to the definitions in a permitting programme can affect business planning. Companies building new data centres, factories or power-generation facilities need to manage their construction timelines with reference not only to the federal NSR programme but also to state and local permitting regimes; environmental regulation governs not just emissions standards but the very sequencing of permitting and construction.
Related Regulation Information
US Clean Air Act (CAA) Air Emission Permitting System (NSR/Title V) and the Dual Federal-State Regulatory Risk
A key permitting system under the U.S. Clean Air Act (CAA) for major facilities and large emission sources. It consists of two layers: New Source Review (NSR — including Prevention of Significant Deterioration (PSD) and Nonattainment Area NSR), which applies to new construction and major modifications, and the operating permit program (Title V), which applies to all major sources. While built on the federal EPA's National Ambient Air Quality Standards (NAAQS) and Hazardous Air Pollutant (HAP) standards (MACT), state governments (e.g., California's CARB, Texas's TCEQ) often impose their own stricter add-on requirements and permitting procedures, forcing operators to navigate an extremely complex, overlapping compliance burden at both the federal and state levels.
See this regulation's full analysis (timeline & business impact)💡 The overview and schedule for the regulation related to this article can also be found on the Regulatory Gateway Database page.