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§2.05 APPLICATION FOR PERMIT FOR SURFACE OR UNDERGROUND MINING <br />ACTIVITIES --MINIMUM REQUIREMENTS FOR OPERATION AND RECLAMATION <br />PLANS. <br />pond storage volume would be 0.56 acre-feet + 0.64 <br />acre-feet = 1.2 acre-feet. The existing sedimentation <br />pond volume is approximately 1.8 acre-feet which <br />exceeds required storage. <br />A sediment pond is provided for the stockpile area. <br />Details of this pond are found in Exhibit 8 Protection of <br />the Hydrologic Balance. This sedimentation pond is <br />located immediately west of the county road over the <br />railroad and south of State Highway 133. It is located <br />in the NWYaNWYa of Section 32, T.13.S., R.91.W., 6"' <br />P.M. Drainage ditches have been installed to intercept <br />surface runoff from the coal stockpile and direct it to <br />the sedimentation pond. <br />The dam is constructed using compacted earth fill. <br />Plans and specifications are as shown in Exhibit 8. <br />The pond was constructed in 1979. <br />The coal stockpile dam is an existing structure and is <br />located slightly west of the truck dump station. The <br />sediment volume and 10-year, 24-hour inflow <br />calculations are presented in Exhibit 8 Protection of the <br />Hydrologic Balance. The sediment volume is 0.16 <br />acre-feet and the 10-year, 24-hour inflow is 0.19 acre- <br />feet. The total volume required is 0.16 acre-feet + 0.19 <br />acre-feet = 0.35 acre-feet. <br />The runoff/sedimentation storage areas will be de- <br />watered with a pump. The de-watering will be after a <br />runoff detention time of 24 hours, and will be done in <br />such a manner as to minimize disturbance to the <br />surrounding areas. <br />TR-020 <br />2.05 - 17 <br />3/01 <br />