The Environmental Protection Agency (EPA) is promulgating amendments to the EPA's federal Prevention of Significant Deterioration (PSD) regulations to remove a date restriction from the Permit Rescission provision. Other than removing the date restriction, this final rule does not alter the criteria under which a new source review (NSR) permit may be rescinded. This final rule also clarifies that a rescission of a permit is not automatic and corrects an outdated cross- reference to another part of the PSD regulations. The EPA is also adding a corresponding Permit Rescission provision in the federal regulations that apply to major sources in nonattainment areas of Indian country.