Dingee Reservoir Final Seismic Report - East Bay Municipal Utility ...

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Yogesh Prashar is principal investigator and project manager and is responsible for the analyses and the report, which was completed under the supervision of Mr. Atta Yiadom. 1.4.2 Consultants Mr. Wayne Magnusen and Ms. Dona Mann of Alan Kropp and Associates (AKA) were the overall consultant project managers for the study and provided geotechnical peer review services for the project. Mr. James Joyce, of Joyce and Associates, performed the engineering geologic services, and was a sub-consultant to AKA. Dr. Walt Silva of Pacific Engineering and Analysis was also a sub-consultant to AKA and developed earthquake ground motions which were used in the deformation analysis. The consultant scope of work consisted of reviewing existing information; providing geotechnical, geologic, and seismologic data. The consultant review comments have been incorporated into the final report and they have found the approach, the analysis, and conclusions of this report to be satisfactory. Seismic Stability Evaluation Report Dingee Reservoir Dam 2 August 2008
2.0 Project Description 2.1 Site Setting The aerial photo of the reservoir is shown below and the general layout of the reservoir and the site location map are shown on Plate 1. The site is located southeast of the intersection of Estates Drive and Bullard Drive in Oakland, California. The reservoir is bound by Estates Drive to the west, Bullard Drive to the north, and McAndrews Drive to the south. The site is surrounded by residences. The site is accessible to foot and vehicular traffic via a gated entrance on Bullard Drive near the intersection of Estates Drive and Bullard Drive. N Site Aerial Photo 2.2 Description of Reservoir and Dam Dingee Reservoir was originally constructed in 1894 by the Oakland Water Company (owned by William J. Dingee), a company that pre-dated the formation of East Bay Municipal Utility District (District) in 1923. The reservoir has been modified twice: once in 1931 for the construction of a new roof and lining, and once in 1939 for the construction of a new west curb and other improvements. Estates Reservoir is located about 1500 feet southeast of this reservoir. Seismic Stability Evaluation Report Dingee Reservoir Dam 3 August 2008
Page 1 and 2: Seismic Stability Evaluation Report
Page 7: 1.0 Introduction 1.1 Background Thi
Page 11 and 12: 3.0 Geotechnical Exploration and La
Page 13 and 14: advanced using a hollow stem auger.
Page 15 and 16: 3.3 Laboratory Testing Soil and roc
Page 17 and 18: 5.0 Subsurface Conditions Based on
Page 19 and 20: Native Material The in-situ moistur
Page 21 and 22: For slope stability analyses, both
Page 23 and 24: We have tabulated the results for b
Page 25 and 26: Table 8 Seismic Slope Stability Ana
Page 27 and 28: 8.0 Conclusions and Summary of Dam
Page 29 and 30: Mitigating Liquefaction Hazards in
Page 31 and 32: Reservoir Roof B A A’ XV-11 (Sta.
Page 33 and 34: DINGEE RESERVOIR DAM SEISMIC STABIL
Page 35 and 36: Elevation (Feet) 780 770 760 750 Re
Page 37 and 38: U-Line: PI =0.9*(LL-8) 60 50 40 30
Page 39 and 40: Total Density (PCF) 775.0 770.0 765
Page 41 and 42: 0.200 0.300 0.400 0.500 0.600 0.700
Page 43 and 44: 5000.0 4500.0 4000.0 3500.0 3000.0
Page 45 and 46: 5000.0 4500.0 4000.0 3500.0 3000.0
Page 47 and 48: 5000.0 4500.0 4000.0 3500.0 3000.0
Page 49 and 50: Material m (pcf) Dam Fill 126.8 Na
Page 51 and 52: Material m (pcf) sat (pcf) c (psf
Page 53 and 54: Material m (pcf) sat (pcf) C T (p
Page 55 and 56: 1.5 Displacement (ft) 1.0 0.5 Kobe
Page 67 and 68:
Appendix B Laboratory Test Results
Page 69 and 70:
2 62 63 64 65 66 67 68 69 70 71 72
Page 71 and 72:
TABLE B-1 SUMMARY OF LABORATORY TES
Page 73 and 74:
TABLE B-3 SUMMARY OF CONSOLIDATED U
Page 75 and 76:
TABLE B-4 UNCONFINED COMRESSION TES
Page 109:
Appendix C Reference Drawings: LIST
Page 125 and 126:
Appendix E Ground Motion Studies Pa
Page 127:
The next Generation Attenuation rel
Page 130 and 131:
Table 1 Target Response Spectrum: A
Page 132 and 133:
Figure 1. Median plus 1-sigma respo
Page 134 and 135:
Figure Set 2 (cont.) PACIFIC ENGINE
Page 136 and 137:
Page 138 and 139:
Page 140 and 141:
Page 142 and 143:
Page 144:
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