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:
uently, not codified in Appendix B, “Environmental Effect of Renewing the Operating License of a Nuclear Power Plant,” to Subpart A, “National Environmental Policy Act—Regulations Implementing Section 102(2),” of 10 CFR Part 51, or (2) information not considered in the analyses summarized in the GEIS leading to an impact finding different from that codified in 10 CFR Part 51. An applicant should state in the ER whether it is aware of any new and significant information and highlight any actions taken to identify new information and evaluate its significance. This information will assist the staff in fulfilling its responsibilities under 10 CFR 51.70(b), which in part states, “The NRC staff will independently evaluate and be responsible for the reliability of all information used in the draft environmental impact statement.” Other parties, as well as the NRC, may also identify new and significant information in the scoping and public comment process. Chapter 5 of this regulatory guide provides guidance on actions that an applicant may take to identify and evaluate the significance of new information. Impact Findings The applicant should discuss the impacts of the environmental issues that require analyses in proportion to their significance. In assessing the significance of environmental impacts, the applicant should conform to the following general definitions of significance level used in the GEIS and codified in Appendix B to Subpart A of 10 CFR Part 51: • SMALL—For the issue, environmental effects are not detectable or are so minor that they will neither destabilize nor noticeably alter any important attribute of the resource. For the purposes of assessing radiological impacts, the Commission considers impacts that do not exceed permissible levels in the Commission’s regulations to be small. • MODERATE—For the issue, environmental effects are sufficient to alter noticeably, but not to destabilize, important attributes of the resource. •