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Page Title:
Table C16. Alternative 1: Hydraulic Dredging and Conventional Disposal in an Existing CDF, Maintenance Dredging Engineering C... |
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 ERDC TN-DOER-C27
July 2002
Table C16
Alternative 1: Hydraulic Dredging and Conventional Disposal in an Existing
CDF, Maintenance Dredging Engineering Costs
Maintenance Dredging Engineering Costs, Alternative 1
Cost Item
$/ton
$/cy
tons/yr
cy/3 yr
$/yr
Hyd Dredging Cost1
$4
0
75,000
$350,000
Mech Dredging Cost1
$7
0
0
$0
Mob/Demob
0
0
$500,000
Separation1
$15
0
0
$0
Separation/Dewatering1
$25
0
0
$0
Transportation2
$110
0
0
$0
Disposal2
$50
0
0
$0
Revenues from sale
1
0
0
$0
$800,000
Total:
Additional Cost Items:
Annual Facility Maintenance
$20,000
Storage capacity consumed cy/3 yr
143,087
Available storage capacity at first cycle
400,984
Cycles to replacement of existing CDF yr
2.80
Number of maintenance cycles completed
2
Number of maintenance cycles remaining
8
Volume CDF required to accommodate remainder of dredging for period of analysis, plus freeboard and ponding
In situ sediment volume total cy
600,000
Freeboard and ponding (1 cycle requirement) cy
704,218
Total volume cy
1,304,218
Total Estimated
cy
Costs
$18
$23,475,924
CDF Construction cost
$2
cap volume
800,000
$1,600,000
Capping Old CDF
(after 2 cylces)
$2
1,408,436
Capping New CDF
1
Based on in situ volumes or weights.
2
Based on processed volumes or weights.
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