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STORAGE CAPACITY <br /> The storage capacity of Sedimentation Pond 002 was also analyzed using <br /> the SEDIMOT II computer program. Table 2 is a summary of the as-built <br /> storage capacity (see Exhibit 13-13A for pond geometry) . <br /> TABLE 2 <br /> As-Built Storage Capacity Summary <br /> Sediment Pond 002 <br /> Stage Capacity <br /> Elevation (Feet) (Ac-ft) Description <br /> 5694.2 0.0 0.00 Bottom of Pond <br /> 5697.0 2.8 0.07 Elevation of Principal <br /> Spillway and 100% <br /> Sediment Storage <br /> 5699.36 5.16 0.28 10-year, 24-hour Peak <br /> Stage <br /> 5700.10 5.9 0.35 Elevation of Emergency <br /> Spillway <br /> 5700.75 6.55 0.44 25-year, 24-hour Peak <br /> Stage <br /> 5701.35 7.15 0.52 100-year, 24-hour Peak <br /> Stage <br /> 5703.3 9.1 0.84 Top of the Embankment <br /> Peabody does not anticipate any pit pumpage or other inflow to the pond <br /> at this time. <br /> SPILLWAY <br /> Sediment Pond 002 provides for a combination of principal-emergency <br /> spillway to safely discharge the runoff from a 25-year, 24-hour storm. <br /> The principal spillway inlet will also be used as the nonclogging <br /> dewatering device and is located at an elevation higher than the maximum <br /> sediment storage volume (Elev. 5697.0) . The principal spillway inlet is <br /> a 0.5-inch diameter hole located on the riser of the emergency spillway <br /> drop inlet structure (see Exhibit 13-13A) and located in a position on <br /> the embankment so as to prevent short-circuiting as much as possible. <br /> The stage-discharge relationship of the emergency spillway inlet (12" <br /> 4 <br />