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:
Environmental Protection Agency (EPA)-designated sole source aquifers that may be affected by station building or operation; • characterization of consumptive and nonconsumptive water uses over the ROI; • temporal variations in consumptive and nonconsumptive water uses; and • existing capacities of local and regional water and wastewater utilities. Station water-use requirements are not addressed in this chapter; however, Chapter 3 of this RG addresses the information to be included in the ER related to station water-use requirements. 2.2.3 Water Quality The applicant should describe the water-quality characteristics of surface waterbodies, groundwater aquifers, and reclaimed water that could be affected by station water use and effluent disposal. Data and information should include, but not be limited, to the following characteristics: • physical (e.g., temperature), • chemical (e.g., pH); and • biological (e.g., biological oxygen demand). The mean, range, and temporal and spatial variation of these water-quality characteristics should be provided. Data should be gathered for a sufficient period of time to understand long term (annual) and short term (seasonal or other) variations in both quality and availability of water (flow rates, water levels, etc.). DG-4026, Page 32 A description of existing aquatic environmental stressors, including a list of any Clean Water Act 303(d)-impaired waters, should be provided. The applicant should identify, to the extent possible, the source and nature of existing impairments. Status of the permitting process for the Clean Water Act (33 U.S.C. 1251 et seq.) 401 certification should also be described. 2.2.4 Water Monitoring The purpose of the pre-application monitoring program is to establish a baseline for assessing subsequent environmental effects attributable to building and operating the proposed station. The applicant should describe the pre-application monitoring program used to assess the characteristics of the