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:
Org/ or by writing the International Atomic Energy Agency, P.O. Box 100 Wagramer Strasse 5, A-1400 Vienna, Austria. 3 Copies of ASTM International (ASTM) standards may be purchased from ASTM, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, Pennsylvania 19428-2959; telephone (610) 832-9585. Purchase information is available through the ASTM Web site at http://www.astm.org. DG-1392, Page 28 27. ASTM International, “Standard Practice for Design and Installation of Groundwater Monitoring Wells,” ASTM D5092-04, 2010. 28. U.S. Army Corps of Engineers, “Instrumentation of Embankment Dams and Levees,” Engineer Manual EM 1110-2-1908 (Part 1), Washington, DC, 1995. 29. U.S. Nuclear Regulatory Commission, “Quality Assurance Program Criteria (Design and Construction),” Regulatory Guide 1.28, Revision 5, October 2017. 30. U.S Nuclear Regulatory Commission, “Management of Backfitting, Forward Fitting, Issue Finality, and Information Requests,” Management Directive 8.4, Washington, DC. DG-1392, Appendix A, Page A-1 APPENDIX A SPECIAL GEOLOGIC FEATURES AND CONDITIONS CONSIDERED IN OFFICE STUDIES AND FIELD OBSERVATIONS (adapted from EM 1110-1-1804, U.S. ARMY CORPS OF ENGINEERS, 2001) GEOLOGIC FEATURE OR CONDITION INFLUENCE ON PROJECT OFFICE STUDIES FIELD OBSERVATIONS QUESTIONS TO ANSWER Landslides Stability of natural and excavated slopes Presence or age in project area or at construction site should be determined. Estimate areal extent (length and width) and height of slope. Are landslides found off site in geologic formations of the same type that will be affected by project construction? Compute shear strength at failure. Do failure strengths decrease with age of slopes, especially for clays and clay shales? Estimate ground slope before and after slide (may correspond to residual angle of friction). What are probable previous and present ground water levels? Check highway and railway cuts and deep excavations, quarries, and steep slopes. Do trees slope in