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:
hore environment, along with other investigations of the offshore feature when possible, to better evaluate characteristics of the tectonic structure in the site vicinity and site area and at the site location. 2. Geologic Evidence, or Absence of Evidence, for Surface Tectonic Deformation. Requirements of GDC 2 in Appendix A of 10 CFR Part 50, 10 CFR 52.17, and 10 CFR 100.23 are met and guidance in Regulatory Guides 1.165, 1.132, 1.198, 1.208, and 4.7 followed for this area of review if sufficient surface and subsurface information is provided by the applicant for the site vicinity, site area, and site location to confirm presence or absence of surface tectonic deformation (i.e., faulting) and, if present, to demonstrate age of most recent fault displacement and ages of previous displacements. If surface faulting is present, the faults must be characterized in regard to fault geometry (i.e., fault orientation, length, and width), amount and sense of displacement, and recurrence rate. In addition to geologic field evidence that may indicate faulting, linear features interpreted from topographic maps, low and high altitude aerial photographs, satellite imagery, and other types of imagery should be examined and their use documented. To expedite the review process, an identification index and duplicates of remote sensing data used in the linear features study should be provided to staff for review. Data to assess presence or absence of tectonic deformation at or near the site is obtained by an applicant through conduct of surface (e.g., imagery analysis, geologic reconnaissance, and geologic mapping to define fault traces) and subsurface (e.g., using seismic instrumentation, geophysical surveys at the ground surface and in boreholes, geologic and geotechnical logging of soil materials and rock core in boreholes, and geologic mapping of trenches and test pits to define paleoseismic features and fault surfaces) investigations. 2.5.3-8 Revision 4 - March 2007 Nature of