2022-02-08_REVISION - M2008078 - Laserfiche WebLink

Home Browse Search

Table 3- Pseudo-Static Condition Slope Stability Analysis Results Description Calculated Required Factor Minimum of Safety Factor of Safety Case 3-1 -Ditch Bank West of Phase 3-Full Reservoir 2.57 1.3 Case 3-1 -Ditch Bank West of Phase 3-Rapid Drawdown 1.54 1.3 Case 3-2-Highway Parcel East of Phase 3-Full Reservoir 2.14 1.15 Case 3-2-Highway Parcel East of Phase 3-Rapid Drawdown 1.24 1.15 Case 3-3-Highway Parcel North of Phase 3-Full Reservoir 1.99 1.15 Case 3-3-Highway Parcel North of Phase 3-Rapid Drawdown 1.16 1.15 Case 4-1 -Electric Line/Poles East of Phase 4-Full Reservoir 2.32 1.3 Case 4-1 -Electric Line/Poles East of Phase 4-Rapid Drawdown 1.42 1.3 Case 4-2-Ditch Bank South of Phase 4-Full Reservoir 2.31 1.3 Case 4-2-Ditch Bank South of Phase 4-Rapid Drawdown 1.38 1.3 Case 5-1 -Conservation Easement East of Phase 5-Full Reservoir 1.92 1.15 Case 5-1 -Conservation Easement East of Phase 5-Rapid Drawdown 1.17 1.15 Case 5-2-Canal Bank South of Phase 5-Full Reservoir 2.72 1.3 Case 5-2-Canal Bank South of Phase 5-Rapid Drawdown 2.00 1.3 Case 5-3-Electric Line/Poles West of Phase 5-Full Reservoir 2.20 1.3 Case 5-3-Electric Line/Poles West of Phase 5-Rapid Drawdown 1.36 1.3 Case 6-1 -Conservation Easement East of Phase 6-Full Reservoir 1.97 1.15 Case 6-1 -Conservation Easement East of Phase 6-Rapid Drawdown 1.17 1.15 Case 6-2-Canal Bank South of Phase 6-Full Reservoir 2.68 1.3 Case 6-2-Canal Bank South of Phase 6-Rapid Drawdown 1.82 1.3 Case 7-1 -Elec/Gas Lines North of Phase 7-Full Reservoir 3.05 1.3 Case 7-1 -Elec/Gas Lines North of Phase 7-Rapid Drawdown 1.92 1.3 Case 7-2-Canal Bank South of Phase 7-Full Reservoir 2.23 1.3 Case 7-2-Canal Bank South of Phase 7-Rapid Drawdown 1.32 1.3 Case 8-1 -Elec/Gas Lines North of Phase 8-Full Reservoir 3.55 1.3 Case 8-1 -Elec/Gas Lines North of Phase 8-Rapid Drawdown 2.39 1.3 Case 8-2-Elec Line/Poles West of Phase 8-Full Reservoir 2.19 1.3 Case 8-2-Elec Line/Poles West of Phase 8-Rapid Drawdown 1.33 1.3 Case 8-3-County Road HH.5 South of Phase 8-Full Reservoir 2.70 1.3 Case 8-3-County Road HH.5 South of Phase 8-Rapid Drawdown 1.77 1.3 Case 8-4-Highway Parcel East of Phase 8-Full Reservoir 2.14 1.15 Case 8-4-Highway Parcel East of Phase 8-Rapid Drawdown 1.33 1.15 VII - CONCLUSIONS AND RECOMMENDATIONS Case 3-1 -The resulting safety factors of 1.85 (static) and 1.54 (pseudo-static) during a rapid drawdown condition exceed the minimum required MLRB safety factors of 1.5 (static) and 1.3 (pseudo-static) for critical structures. The resulting safety factors of 3.47 (static) and 2.57 (pseudo-static) during a full reservoir condition also exceed the ' West Farm Gravel Pit Expansion Slope Stability Analysis Page 6