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:
nd the projected impact to the environment (i.e., projected transport path and concentrations) during the license renewal term. A summary of existing reports describing the event(s) of any inadvertent releases to the groundwater shall also be included. Section 4.5.1.2 of the GEIS discusses this issue. Information and Analysis Content Each nuclear power plant has committed to follow the guidance developed by the Nuclear Energy Institute (NEI) contained in NEI 07-07, “Industry Ground Water Protection Initiative—Final Guidance Document.” The purpose of the initiative is to improve nuclear industry programs for preventing, detecting, and responding to inadvertent releases of radioactive materials that may result in low but detectable levels of plant-related materials in groundwater. Because each nuclear power plant has developed a site-specific groundwater protection program, the staff must review the details for each plant’s program. For those plants that have groundwater monitoring systems composed of wells, the ER should contain the following information: • Provide a site map at sufficient scale to show the location of all monitoring wells and water supply wells. • Include a table depicting well construction information, such as well depth, diameter, screened interval, and construction material. • Include a table showing depths to water and water-level elevations. • Provide a groundwater flow direction map for each aquifer or hydrostratigraphic unit beneath the site. • Develop a table and accompanying map showing the distribution of radionuclide concentrations across the site (e.g., tritium concentrations in picocuries per liter.) A series of maps may be necessary to depict the concentration at depth. DG-4015, Page 32 For those plants that rely on a system other than a groundwater monitoring system composed of wells, the ER should describe the program used for preventing, detecting, and responding to inadvertent releases of radioactive materials