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Page Title:
Table C9. Alternative 5: Mechanical Dredging, CDF Disposal, Engineering Costs |
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 ERDC TN-DOER-C27
July 2002
Table C9
Alternative 5: Mechanical Dredging, CDF Disposal, Engineering Costs
Engineering Costs, Alternative 5
Total
tons/
Cost Item
$/ton
$/cy
Tons
yr
Total cy
cy/yr
Total $
$/yr
Hyd Dredging Cost1
$4
0
0
0
$0
Mech Dredging Cost1
$7
0
225,000
112,500
$787,500
Mobilization/demobilization
0
0
1,000,000
$500,000
Separation1
$15
0
0
$0
Separation/Dewatering1
$60
0
0
$0
2
Transportation
$110
0
0
$0
Disposal2
$50
0
0
$0
Revenues from sale
1
0
0
$0
Total:
$1,000,000
$1,287,500
CDF Construction3
$5
317,673
$1,588,367
Capping
$2
70,173
$140,347
1
Based on in situ volumes or weights.
2
Based on processed volumes or weights.
3
Based on sediment storage volume. Estimated unit costs are based on literature values for similar size CDFs, with upward
adjustments made where freeboard and ponding are required.
Table C10
Alternative 5: Mechanical Dredging, CDF Disposal, Financial Costs
(Interest Rate = 0.06375)
2001
2002
2003
Cubic Yards
0
112,500
112,500
$/yr
$1,588,367
$1,287,500
$1,427,847
IDC (interest during construction)
$323,552
$169,389
$91,025
Cost/Year
$1,911,920
$1,456,889
$1,518,872
Total Financial Investment:
$4,887,681
CDF Construction included here if completely precedes dredging.
CDF and first-year dredging included here if they will both occur in the first year.
Includes final-year capping costs.
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