82


throughout the entire range of the design depth. The STA operates over a relatively

narrow range from 1.5 to 3.5 feet, as stated previously.


 100%

 90%

 80%

 70%

g 60%

S50%

.E 40%
II
v
 30%

 20%

 10%

 0%


-- EAASR
- STA 3/4


 0 2 4 6 8 10 12
 Mean depth, ft.


Figure 5-2. Mean Annual Depths from SC STA Scenario

 The HRT profile reflects the difference in depth profiles (Figure 5-3). The

EAASR operates under a large range of HRT's. The HRT distribution shows STA 3/4


operating in the within the normal range of STAs, 14 to 21 days, for approximately 19%

of the years for <= 14 days and 50% of the years for <= 21 days. The remaining 50

percent of HRT are above this range, again indicating the STA may be able to receive

more hydraulic loading.