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
CFR Part: 
CFR Title: 

Content:
uding electronic layers, showing waterbodies and aquatic habitats on the proposed site and in the vicinity and region, including the natural structure of the benthic habitat, the location and depth of any associated underwater structures in the vicinity of the site (e.g., submerged dams), and the proposed location of the intake and the discharge systems. Similar maps and figures of transmission and pipeline corridors that extend offsite or other affected offsite areas and their relationships to waterbodies and aquatic habitats. • A discussion of the existing aquatic habitats in the vicinity of the proposed intake and discharge structures and associated systems. • Bathymetry, substrate, and other habitat information, including maps or figures, for the affected aquatic habitats in the vicinity of plant structures including the discharge and intake facilities. • A description of any natural, anthropogenic, and pre-existing environmental stressors and the current ecological conditions indicative of such stresses. Aquatic Organisms The ER should include the following information to characterize the aquatic organisms: • Distribution and abundance data for fish and macroinvertebrates found on the site and in the vicinity. Data should be collected for a sufficient period of time and frequency and from locations that will provide an understanding of the long term (annual) and short term (seasonal or other) variations in distribution and abundance of species potentially affected by building and operation. Studies would ideally show the condition of the ecological resources that exist no more than 5 to 10 years prior to NRC receiving the application. If older ecological baseline data is used, a discussion of the basis for determining that the data provides for an accurate and meaningful evaluation of potential impacts should also be included. Data collection should be consistent with the guidance on baseline studies presented in RG 4.24. • Locations and values of