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Table 29: Alternative D8 - Combine Alternatives C8 and S8 Cost EstimateFarmer/Prairie CreekAlternative D8 Cost Estimate Aug 04Line Unit TotalItem Item Quantity Unit Price CostAlt. S8 Belleau Lake Alternative 1 Each $66,651 $66,651Rebar Removal 31620 Lbs $0 $6,324Concrete Removal 527 CU $150 $79,050New Concrete 8786 Feet^ $100 $878,60020200100 Excavation 6044 CY $11 $65,880250***** Seeding/Mulching/Fertilizing 1.55 Acres $2,000 $3,097Contingencies (15%) and Mobilization (6%) <strong>of</strong> subtotal $216,920Construction Cost $1,316,521Engineering (20%) and Construction Supervision (7.5%) $362,043Alt. S8 Right-<strong>of</strong>-Way Cost* 719920 SQ $0 $0Alt. C8 Right-<strong>of</strong>-Way Cost 22500 SQ $5 $112,500Total Project Cost $1,791,065Alternative Average Annual Cost (5.375% For 50 Years) $103,847O&M (1%)** $24,747Alternative Average Annual Cost and O&M (1%) $128,594Baseline Average Annual Damages (Direct and Indirect) $144,531Alternative Average Annual Damages (Direct and Indirect) $127,272Alternative Average Annual Benefits $17,259Benefit Cost Ratio 0.13Frequency 1 2 5 10 25 50 100Existing Damaged Structures 0 1 2 11 38 64 96Alternative Damaged Structures 0 1 1 6 28 64 90Structures Removed from Floodplain 0 0 1 5 10 0 6* $0.00 Assessed value because <strong>of</strong> current public ownership.**Does not include demolition charges for O&M on C8.108
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