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:
dance with 40 CFR 51.853(i), if the total emissions from refurbishment are 10 percent or more of the area’s total emissions, proceed to step 11. If not, the emissions are not regionally significant, and no further analysis is required. 11. For those pollutants identified in steps 8–10, use air dispersion modeling to estimate pollutant concentrations in the ambient air. Using these concentrations, evaluate the extent to which refurbishment-related emissions would cause or increase the frequency of the threshold emission levels being exceeded during the refurbishment.11 If analyses based on peak employment period emissions indicate a potential for the annual air quality limits to be exceeded, the applicant may take into account that the refurbishment period is less than 1 year and that peak employment levels will not occur during the entire refurbishment period. 12. If refurbishment-related emissions would cause or contribute to the threshold emission levels being exceeded, identify and analyze the extent to which mitigation measures could minimize adverse impacts on air quality. Explain the extent to which mitigation measures directed at air quality could be coordinated with the mitigation of transportation impacts. If the nuclear plant utilizes a cooling tower and is located in a State that regulates particulate emissions from cooling towers, the applicant should conduct an appropriate assessment of such emissions and report the results in its ER. 4.3 Noise The GEIS reviews impacts to noise resources, which are considered generic, or Category 1, issues. The ER should discuss any new and significant information; otherwise, impacts to this resource do not need further assessment. 4.4 Geology and Soils The GEIS reviews impacts to geology and soils resources, which are considered generic, or Category 1, issues. The ER should discuss any new and significant information; otherwise, impacts to this resource do not need further assessment. 11 Conditions on air quality