will be used to estimate the annual variability in performance due to variability in inflow

rates and operating depths.

 The annual variability in the SC STA scenario for the EAASR and for STA 3/4

are reported in Table 5-13 and Table 5-14, respectively. On an annual basis, the reservoir

varies over a large range of flows and depths. The annual average inflows varied from

695 to 5,662 acre feet/day. The mean annual depths ranged from 0.7 to 11.9 feet. The

resulting calculated HRTs are between 23 and 113 days. The inflow concentration to the

EAASR was relatively stable and varied from 0.084 to 0.135 mg/L. The calculated

outflow concentrations reflected the HRT and Cin characterizations and varied from 0.042

to 0.092 mg/L. The associated percent removals varied from as low as 24% to a high of

69%.

 On an annual basis, STA 3/4 received inflows ranging from 253 to 5,540 acre feet

per day. Average depths ranged from 1.6 to 3.1 feet. The resulting calculated HRTs were

between 10 and 116 days. The inflow concentration varied widely from 0.042 to 0.092

mg/L. The calculated outflow concentrations ranged from 0.019 to 0.029 mg/L.