Document: NUREG-0800
Document ID: 9cdf4eb8-90c4-435e-84a4-d23c09056921
Document Type: srp
Title: STABILITY OF SUBSURFACE MATERIALS AND FOUNDATIONS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070268.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.4
CFR Part: 
CFR Title: 

Content:
r those structures founded on weathered rock or structural backfill over weathered rock. The time history used for seismic design of Category I earth dams and for liquefaction assessment envelopes the response spectra for the site and has a conservative duration. The staff concludes that information, including analysis and substantiation, presented by the applicant is sufficient to demonstrate that the properties and stability of all soils and rock, whose performance could adversely affect directly or indirectly safety-related structures of the nuclear plant or pose a hazard to the public, meet the requirements of the pertinent Commission's regulations (cite appropriate References 1 through 7). The applicant has met the requirements of the pertinent Commission's regulations (cite appropriate References 1 through 7) with respect to defining geologic features; demonstration of the static and dynamic engineering properties of soil and rock strata underlying the site as supported by results of investigations including borings, shafts, pits, trenches, and field and laboratory tests; properties of borrow materials; compaction and excavation specifications; design criteria, methods, and analyses; groundwater conditions and control; response of site soil and rock to static and dynamic loading including evaluation of liquefaction potential; settlement analyses; and, where required, techniques and specifications to improve subsurface conditions, by meeting the regulatory position in Regulatory Guide (cite appropriate References 8 through 11) or by providing and meeting an alternative method to these regulatory positions that the staff has reviewed and found to be acceptable. Based on the results of the applicant's investigations, laboratory and field tests, analyses, and criteria for design and construction, we conclude that the site and the plant foundations will be adequate to safely support the planned nuclear power plant and that safety-related earthworks will perform