Document: NRC Regulatory Guide
Document ID: 01fb3132-b05a-41a0-ab81-466a6fb6f4d3
Document Type: regulatory_guide
Title: Preparation of Environmental Reports for Nuclear Power Plant License Renewal Applications (Rev. 1)
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML0916/ML091620409.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-4.2S1
CFR Part: 
CFR Title: 

Content:
determined without considering the compliance status of each site and the activities that could occur. These impacts would be short-lived and cease after projects were completed. Specifically, 10 CFR 51.53(c)(3)(ii)(F) requires the following: If the applicant’s plant is located in or near a nonattainment or maintenance area, an assessment of vehicle exhaust emissions anticipated at the time of peak refurbishment work force must be provided in accordance with the Clean Air Act as amended. The threshold emission levels serve as a screening value to determine whether a conformity analysis should be performed for a proposed action. The threshold emission levels range from 10 to 100 tons (9 to 91 metric tons) per year. The EPA considers it extremely unlikely that emissions below the threshold emission levels would affect a nonattainment or maintenance area. If the threshold emission levels are not exceeded, a conformity analysis is not required unless the total direct and indirect DG-4015, Page 24 emissions8 are 10 percent or more of a nonattainment or maintenance area’s total emissions for that pollutant. Under this latter scenario, the action is defined as a “regionally significant action” and requires a conformity analysis. Information and Analysis Content The applicant should consult with the appropriate EPA regional office and the State air quality regulatory agency. Discussions with staff at EPA regional offices indicate that some flexibility may exist in the rigor of the analysis that would be acceptable, depending on the particular site, the extent of refurbishment, the pollutants in nonattainment, the severity of the nonattainment, and the State regulatory agency. The ER should document such consultations. In support of NRC’s responsibility to consider the conformity of its actions with SIPs, the applicant should provide the following information in accordance with the 12 steps identified below: 1. If there will be no refurbishment or if refurbishment