Document: NRC Regulatory Guide
Document ID: f0baf50b-5bb7-4783-b2f9-9586e09c97e1
Document Type: regulatory_guide
Title: Preparation of Environmental Reports for Nuclear Power Stations + HISTORY - HISTORY 02/2017 – DG-4026 , Proposed Revision 3 09/2014 – Periodic Review of Revision 2 – Revise (Rev. 3)
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML1611/ML16116A068.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-4.2
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CFR Title: 

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termines an adverse effect will occur, it will in accordance with Part 800 develop proposed measures in consultation with the identified consulting parties that might avoid, minimize, or mitigate such effects. Such measures, as appropriate, would be discussed in the NRC staff’s environmental impact statement (EIS). If the NRC staff determines that adverse effects exist, it can develop a Memorandum of Agreement or Programmatic Agreement (See 36 CFR Part 800), as appropriate. See Appendix B for additional information on consultation. 5.7 Air Resources The ER should adequately describe the impacts to the atmosphere from cooling-system operations, as well as the impacts to air quality from operation of the proposed plant and associated transmission lines. The scope of the review is based on the magnitude and nature of the expected impacts associated with the operations and the characteristics of the site and vicinity. DG-4026, Page 93 5.7.1 Cooling-System Impacts The applicant should describe atmospheric impacts from cooling-system operations. The description should include the following: • type of cooling system • cooling-system characteristics (e.g., the number of towers and fans, location, elevation above sea- level, tower physical dimensions, and release height) • performance characteristics (e.g., air and water mass flow rates, water temperature entering and leaving the tower, air temperature leaving the tower, and amount of heat released) • drift characteristics (e.g., drift rate, drift droplet size distributions, and concentration of dissolved and suspended solids). • analytical technique(s) for estimating cooling-system impacts (e.g., meteorological data used) • estimates of cooling-system impacts at the site and vicinity, including the following: – monthly and/or seasonal and annual plume lengths – monthly and/or seasonal and annual additional hours of fogging and icing – monthly and/or seasonal and annual amounts of salt deposition –