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Control Practice Factor (CP) <br />The control practice factor (CP) was estimated to be 1.00 for fresh <br />cultivated land with no conservation treatment for a conservative <br />approach (Barfield et al., 1981). <br />Storage Capacity <br />The storage capacity of Sediment Pond 002 was also analyzed using the <br />SEDIMOT II computer program. Table 6 is a summary of the designed <br />storage capacity (see Exhibit 13-13 for pond geometry). <br />TABLE 6 <br />Design Storage Capacity Summary <br />Sediment Pand 002 <br /> Stage Capacity <br />Elevation (Feet) (Ac-ft) Description <br />5696.0 0.0 0.00 Bottom of Pond <br />5697.0 1.0 0.068 Elevation of Principal <br /> Spillway and 100% <br /> Sediment Storage <br />5699.44 3.44 0.315 10-year, 24-hour Peak <br /> Stage <br />5700.03 4.03 0.390 25-year, 24-hour Peak <br /> Stage <br />5700.10 4.10 0.46 Elevation of Emergency <br /> Spillway <br />5701.09 5.09 0.55 100-year, 24-hour Peak <br /> Stage <br />5702.0 6.0 0.71 Top of 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 />9 <br />