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Section 6 The Selected Alternative Plan

EAA Storage Reservoirs Revised Draft PIR and EIS February 2006

6-15

6.2 COST ESTIMATE

6.2.1 Initial Costs

The total estimated initial cost for the selected alternative plan is $912,895,089.

This does not include any real estate, engineering, design or construction costs

for the proposed stormwater treatment area, which will be included at a

Planning level cost estimate in the Final PIR. Current rough order of magnitude

costs for the proposed STA include an estimated real estate cost of $8,176,000

and cost estimates for construction ranging from $57,800,000 to in excess of

$150,000,000, based on comparative costs of similar construction. The estimated

cost of the selected alternative plan features, including real estate (lands and

damages), is shown in Table 6-6.

TABLE 6-6: PROJECT COST EAA RESERVOIR ALTERNATIVE 4

Borrow and Canal $261,957,593

Levee construction $191,732,312

Cutoff Wall $86,086,678

Utility Relocations $323,857

Bridges $5,636,497

NNR Canal Improvements $35,443,519

Miami Canal Improvements $16,682,354

Bolles & Cross Improvements $20,745,203

Pump Stations $122,520,842

Structures $14,714,934

Manatee Gates $5,325,000

Recreation $342,300

Total Construction Cost $761,511,089

Real Estate $80,134,000

S&A $33,750,000

PED $37,500,000

Total Estimated Cost* $912,895,089

*Real estate, engineering, design and construction costs for the STA have not been added to this

table as a conceptual design has not been completed. Additional analysis will be conducted prior

to the Final PIR and during the detailed engineering and design phase of the project to

determine the final design, size, costs, and operations of the STA.

6.2.2 Investment Costs

Department of the Army Engineering Regulation (ER) 1105-2-100 requires that

interest during construction (IDC) be computed which represents the

opportunity cost of capital incurred during the construction period. Interest was

computed for construction and pre-construction engineering and design (PED)

costs from the middle of the month in which the expenditures were incurred

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