Wenger 72944 Especificações descarregar pdf (Página 13)

Executive Summary

An approximately 32,000 acre earthen embankment reservoir with a

maximum normal pool storage depth of 12-feet;

An approximately 32,000 acre roller compacted concrete embankment

reservoir with a maximum normal pool storage depth of 12-feet; and

An approximately 26,500 acre earthen embankment reservoir with a

maximum normal pool storage depth of 14-feet.

In addition, conveyance improvements to the following existing canals were

included in each of the alternative plans: Miami Canal, North New River Canal,

and Bolles and Cross Canals.

The alternative plans were compared using a system formulation and evaluation

approach to identify the alternative plan that maximizes net system-wide

benefits of the comprehensive plan. This was accomplished by evaluating

environmental benefits (habitat units) for the Caloosahatchee and St. Lucie

Estuaries, Lake Okeechobee, and the Everglades Protection Area as part of a

system formulation and evaluation analysis (i.e., the alternative plan plus all of

the other projects in the CERP compared to the future without-project

condition). An incremental analysis was also performed as part of the system-

wide evaluation. A next-added incremental justification analysis was also

performed to determine if the benefits attributable to the selected plan are

sufficient to justify its cost as a stand-alone project (if no additional CERP

projects are built). The State of Florida's "Everglades Agricultural Area A-1

Project" being implemented through its "Acceler8" program is similar to the Cell

1 component of the selected plan, and was therefore evaluated as an increment

of the selected plan during the plan formulation and evaluation conducted for

this project.

SELECTED PLAN ELEMENTS

The selected plan, Alternative 4, features an approximately 31,000-acre above-

ground reservoir impoundment with earthen embankments and a maximum

normal pool storage depth of twelve feet. The reservoir is divided into two cells,

Cell 1 and Cell 2, approximately 17,000 and 14,000 acres in size, respectively.

Both reservoir cells include individual inflow pump stations, discharge

structures, emergency overflow spillways, and seepage control canals with

associated structures. Total acreage required for the selected plan is estimated

to be 31,640 acres (including the area of the seepage canals to the south and

west of the reservoir). A stormwater treatment area comprised of approximately

1,495 acres is proposed east of the Miami Canal and west of the reservoir. The

layout of the selected plan is depicted in

Figure 2.

EAA Storage Reservoirs Revised Draft PIR and EIS February 2006

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Wenger 72944 Especificações Página 13