Table 5-15. Summary Results for the One, Two, and Four Compartment Scenarios
 Compartments EAASR EAASR STA
 Cin (mg/L) Cout (mg/L) Cout (mg/L)
 1 0.101-0.105 0.028-0.051 0.020-0.21
 2 0.078-0.112 0.045-0.058 0.020
 4 0.067-0.133 0.046-0.063 0.020-0.021

 The analysis of annual variability of the SC STA scenario found a similar inflow

pattern for the EAASR and STA 3/4. The depth profiles were clearly different, with the

EAASR fluctuating through out the entire range of design depths and STA 3/4 remaining

relatively constant. The variation in concentration decreased as the water was treated by

the EAASR/STA 3/4 system. This indicated a functioning storage/treatment system.

The multiple scenarios were compared and the following conclusions were drawn. The

compartmentalization of the reservoir can provide additional operational flexibility to

manage the mixing of influents and treatment times to achieve additional water quality

improvements. An additional outflow structure from Compartment 2 to STA 3/4 can

increase the operational flexibility of the EAASR and may increase water quality

improvements. Operating the EAASR at greater depths may further increase the water

quality treatment. The EAASR does not significantly improve the outflow water quality

from STA 3/4 as compared to using STA 3/4 only because of the relatively long

residence times in STA 3/4. This suggests that the current inflows to STA 3/4 could be

increased to improve water quality even more in the EAASR/STA 3/4 storage/treatment

train.

 The actual performance of the EAASR/STA system could vary widely from the

predictions presented in this thesis for several reasons including:

* Inflow quantities and water quality can be expected to vary over the next 50 years