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Page Title:
Table C13. Identification of Base Plan and Calculation of Separation Benefit |
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 ERDC TN-DOER-C27
July 2002
Table C13
Identification of Base Plan and Calculation of Separation Benefit
Compare Alternatives
Initial
Alternative
Investment
Alternative Description
Initial Construction & Maintenance
1
$5,352,675
Hydraulic dredging, CDF disposal
2
$8,673,263
Hydraulic dredging, sand separation, CDF disposal of fines
3
$17,916,411
Hydraulic dredging, sand separation, dewatering of fines and placement in CDF
4
$40,996,510
Hydraulic dredging, sand separation, dewatering of fines, and offsite disposal of fines
5
$4,887,681
Mechanical dredging and placement in a CDF
6
$53,396,492
Mechanical dredging and offsite disposal
Assuming all alternatives are available
Base plan
$4,887,681
Least-cost alternative without separation is base plan
Separation
$8,673,263
Least-cost separation alternative is selected for comparison
Benefit to separation
-$3,785,582
Assuming offsite disposal is required
Base plan
$53,396,492
Mechanical dredging with offsite disposal is base plan
Separation
$40,996,510
Least-cost separation alternative with offsite disposal is selected for comparison
Benefit to separation
$12,399,982
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