CHAPTER 3
 DEVELOPMENT OF EAASR CONCEPTUAL DESIGN ALTERNATIVES

 The hydrology of EAASR and STA 3/4 were simulated using the SFWMM

Version 5.4. The complete water quantity dataset used in water quality modeling was

developed from the simulations. Therefore, the EAASR conceptual design alternatives

are presented in the contextual framework of the SFWMM. The physical layout of the

reservoir is termed a configuration. The combination of a configuration and particular

flow dataset is referred to as a scenario. All configurations simulated the levee walls as

vertical and of insignificant area to affect the stage-area-volume relationship. The

reservoir levees were also assumed to allow no seepage, though groundwater flow was

included.

 The selection of the configuration of the EAASR was an iterative process. The

sizing of the EAASR, characterized by the area and depth, was first determined. For the

chosen size, configurations to evaluate the compartmentalization of the EAASR were

then developed. These configurations are used in the water quality analysis of this report

and are described in full detail.

 Sizing Configurations

 Early configurations used a combination of Components A, B, and C of Figure 2-

2 (USACE and SFWMD 2004a). A decision was made to reserve Components B and C

to expand the capacity of adjacent Stormwater Treatment Areas. Alternatives were then

developed using only the Component A location.