Proposed Negative Declaration Sacramento River Flood Control System Evaluation Phase Iii Mid Valley Area

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ISBN 13 :
Total Pages : 674 pages
Book Rating : 4.:/5 (946 download)

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Download or read book Sacramento River Flood Control Project, California, Mid-Valley Area, Phase III. Design Memorandum, Volume 2 of 2 written by and published by . This book was released on 1995 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was performed for the purpose of determining the final geotechnical recommendations for levee repairs in the Mid-Valley study area. The Mid-Valley study area is one of five phases in the Sacramento River Flood Control System Evaluation. The Mid-Valley Study Area includes approximately 350 miles of flood control levees as shown in Figure 1. In general, the levees within the study area have performed well. There have been relatively few cases of levee slumping and foundation piping and only isolated reports of complete levee failure. However, some of the reaches which have experienced instability or foundation piping in the past are considered a potential threat to the integrity of the system. This basis of design focuses primarily on the reported problem sites that were identified in the December 1991 Initial Appraisal Report (ref. I, Appendix B). Following further evaluation, structural remediation is recommended at several sites. The conclusions and recommendations are based on review of geotechnical reports (references 1 through 4), review of office files of problem areas, site inspections, interviews with local representatives, additional explorations, laboratory testing, and seepage and stability analyses at various sites. Twenty-nine sites identified in this study are considered the