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:
any wetlands in the vicinity that might be affected by a lowered water table. • Evaluate the significance of present and future effects of onsite withdrawal on offsite wells. Additionally, describe any potential mitigation measures and state whether they will be implemented. DG-4015, Page 28 Groundwater Use Conflicts (Plants That Withdraw More Than 100 Gallons per Minute, Including Ranney Wells) This section applies to plants using more than an annual average of 100 gallons per minute (gpm) (6 liters per second (L/s)) of groundwater. Only one plant in the United States, Grand Gulf Nuclear Station in Mississippi, uses Ranney (collector) wells. The Grand Gulf wells intercept most of their production from infiltration of Mississippi River water through the bottom of the river bed and have little or no impact on surrounding groundwater users and should not be considered further in ERs for other sites. Table B-1 states that, “Plants that withdraw more than 100 gpm could cause groundwater use conflicts with nearby groundwater users.” Specifically, 10 CFR 51.53(c)(3)(ii)(C) requires, in part, the following: If the applicant’s plant…pumps more than 100 gallons (total onsite) of groundwater per minute, an assessment of the impact of the proposed action on groundwater must be provided. Section 4.5.1.2 of the GEIS discusses this issue. This section provides guidance to the applicant to assist in identifying and assessing the environmental impacts of groundwater withdrawal and use during the license renewal period. If the applicant can provide withdrawal records or other evidence that the plant does not pump more than an annual average of 100 gpm (6 L/s) of groundwater, the ER should note this fact, and no additional information need be provided. Information and Analysis Content If the plant pumps more than an annual average of 100 gpm (6 L/s), the applicant should provide the following information and analyses to enable the NRC staff to assess the magnitude and