Document: NUREG-0800
Document ID: 74980693-f1d2-4f59-a418-b297e1cc6509
Document Type: srp
Title: SURFACE FAULTING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070730597.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.3
CFR Part: 
CFR Title: 

Content:
s, performed in progressively greater detail closer to the site, within each of three areas defined by circles drawn around the site using radii of 40 km (25 mi), 8 km (5 mi), and 1 km (0.6 mi). These three circumscribed areas correspond, respectively, to site vicinity, site area, and site location. The geologic, seismic, geophysical, and geotechnical information provided by an applicant in the Safety Analysis Report (SAR) to support the license application addresses the following specific topics related to surface faulting (SAR Section 2.5.3): geologic, seismic, and geophysical investigations; geologic evidence, or absence of evidence, for tectonic surface deformation; correlation of earthquakes with capable tectonic sources; ages of most recent deformation; relationship of tectonic structures in the site area to regional tectonic structures; characterization of capable tectonic sources; designation of zones of Quaternary deformation in the site region; and potential for surface tectonic deformation at the site. As part of the process for review of potential surface faulting issues, the reviewer evaluates the technical information provided by the applicant, with an emphasis on the Quaternary Period. The Quaternary is defined as the geologic period running from 1.8 million years ago (mya) to the Present (Reference 5). 1. Geologic, Seismic, and Geophysical Investigations (SAR Section 2.5.3.1). The reviewer assesses information provided by an applicant related to Quaternary tectonics, structural geology, stratigraphy, geochronological methods used for age dating, paleoseismology, and geologic history of the site vicinity, site area, and site location to ensure it is complete; compares well with data from other studies carried out in the same areas; and is supported by detailed investigations conducted by the applicant. For coastal and inland sites near large bodies of water, similar detailed investigations are to be conducted by the applicant for onshore and offshore