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:
e area determined to have a reasonable likelihood of being adversely affected, continue the analysis in step 8. No further analysis is required for those areas that were not determined to be adversely affected. 8 The “total direct and indirect emissions” includes emissions of criteria pollutants and emissions of precursors of criteria pollutants (see 40 CFR 51.852). 9 A good reference for this information is “AP-42: Compilation of Air Pollutant Emission Factors” (historical and current information) which can be found at http://www.epa.gov/otaq/ap42.htm. 10 Information on the most current EPA modeling tools for calculating vehicle emissions may be obtained at http://www.epa.gov/otaq/models.htm. DG-4015, Page 25 8. Compare the total emissions calculated in step 6 with the appropriate threshold emission levels of 40 CFR 51.853(b). If the threshold emission levels are exceeded, proceed to step 11. If not, continue the analysis at step 9. 9. Determine the nonattainment or maintenance area’s total emissions of pollutants identified in step 3. These determinations need only be sufficiently accurate to support evaluation of the regional significance of emission levels below the threshold emission levels of 40 CFR 51.853(b). Potential sources of this information include EPA regional offices, State and local air quality agencies, and final environmental impact statements. If an existing estimate of the area’s total emissions is not found, estimate the emissions from readily available information, such as population, traffic counts, and published emission rates, using reasonable assumptions. Identify the information and the assumptions. 10. Compare the total emissions from refurbishment estimated in step 6 with the area’s total emissions estimated in step 9. In accordance 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,