Document: NUREG-0800
Document ID: 00d3733d-7b45-4276-8765-54fc5ae522d6
Document Type: srp
Title: .3-3
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0423/ML042390212.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5
CFR Part: 
CFR Title: 

Content:
Rev. 3 - March 1997 identification list, index, and duplicates of the remote sensing data used in the linear features study should be provided to and reviewed by the staff. Evidence for the absence of tectonic deformation is obtained by the applicant conducting site surface (geological reconnaissance and mapping, etc.) and subsurface investigations (geophysical, core borings, trenching and logging, etc.) in such detail and areal extent to ensure that undetected offsets or other deformations are not likely to exist. In the Central and Eastern United States (CEUS), except for the New Madrid Seismic Zone, the Meers fault, and the Cheraw fault of the Colorado piedmont, earthquake generating faults either do not extend to the ground surface or there is insufficient overlying soil or rock of known or of a sufficient age to date those that do. In tectonically active regions such as the Western United States, many capable tectonic sources are exposed at the ground surface and can be characterized as to their seismic potential. However, in these regions many other capable tectonic sources are buried (blind faults), and may be expressed at the surface or near surface by folding, uplift, or subsidence (including faults related to subduction zones). Investigations in these regions should take these phenomena'into account. The nature of geological, seismological, and geophysical investigations will vary in detail and extent according to the geological complexity of the specific site. Subsection 2.5.3.3 Correlation of Earthquakes with Capable Tectonic Sources. In meeting the requirements of References 1 and 2, this subsection is acceptable if all historically reported earthquakes within 40 km (25 mi) of the site are evaluated with respect to hypocenter accuracy and source origin, and if all capable tectonic sources that could, based on their orientations, extend to within 8 km (5 mi) of the site are evaluated with respect to their potential for causing surface deformation. In