3/4 are also high for an STA with a calculated mean of about 29 days. Thus, the combined system has ample time to store and treat the water. The EAASR can also provide a significant ability to manage the inflows to STA 3/4 in order to optimize its performance. From an operational point of view, it is desirable to maximize the amount of inflow that can be passed through the EAASR before entering STA 3/4. 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 EAASR and STA 3/4 remove roughly equal portions of the median concentrations. 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.