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Page Title:
Table C22. Alternative 3: Hydraulic Dredging, Sand Separation, Dewatering and CDF Placement of Fines, Maintenance Dredging En... |
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 ERDC TN-DOER-C27
July 2002
Table C22
Alternative 3: Hydraulic Dredging, Sand Separation, Dewatering and CDF
Placement of Fines, Maintenance Dredging Engineering Costs
Maintenance Dredging Engineering Costs, Alternative 3
Cost Item
$/ton
$/cy
tons/yr
cy/3 yr
$/yr
Hyd Dredging Cost1
$4
0
75,000
$300,000
Mech Dredging Cost1
$7
0
0
$0
Mob/Demob
0
0
$500,000
Separation1
$15
0
0
$0
Separation/Dewatering1
$25
0
75,000
$1,875,000
Transportation2
$110
0
0
$0
Disposal2
$50
0
0
$0
Revenues from sale
-1
0
24,648
-24,648
$2,650,352
Total:
Additional Cost Items:
Annual Facility Maintenance
$20,000
Storage capacity consumed cy/3 yr
29,987
Available storage capacity at first cycle
1,490,137
Cycles to replacement of existing CDF yr
49.69
Number of maintenance cycles completed
10
(There are only 10 cycles in period of analysis)
Number of maintenance cycles remaining
0
Volume CDF required to accommodate remainder of dredging for period of analysis, plus freeboard and ponding
In situ sediment volume total cy
0
Freeboard and ponding (1 cycle requirement) cy
0
Total volume cy
0
Total Estimated
cy
Costs
$18
$0
CDF Construction Cost
$03
$2
cap volume
0
Capping Old CDF
$2
$0
Capping New CDF
1
Based on in situ volumes or weights.
2
Based on processed volumes or weights.
3
Old CDF is not replaced during period of analysis.
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