Document: NRC Regulatory Guide
Document ID: a094549d-8685-4dad-b90f-c28c7d279a53
Document Type: regulatory_guide
Title: Geologic and Geotechnical Site Characterization Investigations for Nuclear Power Plants + HISTORY – HISTORY 08/2021 – DG-1392 , Proposed Revision 3 07/2014 – Periodic Review of Revision 2 – Reviewed with no issues identified 02/2001 – DG-1101 , Proposed Revision 2 (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2119/ML21194A176.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.132
CFR Part: 
CFR Title: 

Content:
gation for the existing plant could provide valuable information. Plans held by utilities should be consulted to locate services such as water, gas, electric, and DG-1392, Page 11 communication lines. Locations of power lines, pipelines, and access routes should be established. Mining records should be consulted to determine locations of abandoned adits, shafts, mining works, benches, and tailings ponds and embankments. Oil, gas, and water well records and oil and gas field exploration data can provide valuable subsurface information. Historical and archaeological sites should be identified to document locations of potential cultural resources. 3.3 Field Reconnaissance In addition to evaluating and documenting previously published information, it is necessary to perform preliminary field reconnaissance of the site and the surrounding area. This step enables an assessment of field data related to site conditions and regional geology and establishes the basis for a detailed site investigation plan. Appendix A to this guide lists special geologic features and conditions that should be considered. In addition to site-specific conditions, areas containing potential borrow sources, quarry sites, and water impoundments should be investigated. The team performing the reconnaissance should include, as a minimum, a geologist and a geotechnical engineer and could also include other specialists (e.g., an engineering geologist or geophysicist). Appropriate topographic and geologic maps should be used during the field reconnaissance, if available, to locate features of potential interest. A GPS unit would be advantageous for recording locations in the field, as noted in more detail in Regulatory Position 7.1. 3.4 Preliminary Assessment of Site Suitability After completion of the field reconnaissance investigations and in conjunction with the information in the developed database, a preliminary determination of site suitability should be made to identify information gaps and