PIOGA Press
(By Gary Steinbauer, Gina Falaschi and Christina Puhnaty)
On October 14, 2022, the U.S. Environmental Protection Agency published a proposed rule that would require all emission sources subject to the Agency’s major New Source Review (NSR) permitting program to consider fugitive emissions when evaluating whether a new source or physical or operational change triggers the stringent major NSR permitting requirements. 87 Fed. Reg. 62,322 (Oct. 14, 2022) (Proposed Rule). The treatment of fugitive emissions, i.e., those “which could not reasonably pass through a stack, chimney, vent, or other functionally equivalent opening,” under the major NSR permitting program has been controversial for decades. While EPA predicts that the Proposed Rule will have limited impact on the regulatory community, EPA and state air permitting authorities may now place even greater pressure on industry to predict and quantify “fugitive emissions” from physical or operational changes to their facilities.
The major NSR permitting program is the Clean Air Act’s permit program that applies to the construction of new “major sources” and “major modifications” (i.e., qualifying physical or operational changes) to existing “major sources.” Applicability determinations under the major NSR program often rely heavily on predicted emissions from a new source or planned physical or operational changes to an existing source. When the new or existing source is located in an area that is in attainment with the Clean Air Act’s national ambient air quality standards (NAAQS), the major NSR program’s Prevention of Significant Deterioration (PSD) requirements apply. More stringent requirements, known as non-attainment NSR requirements, apply when the source will be or is located in an area that is not meeting one or more of the NAAQS. …