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<br />-6- <br />- 5. It is stated on page 4-70 of Volume I that the haul road will be left as <br />an access road. The information required by Rule 4.03.1(1)(f) must be <br />submitted in order for the Division to approve retention of this road. <br />6. Storm King must state in the application what temporary erosion control <br />measures will be implemented during construction of the roads. <br />7. Storm King must indicate which areas of the haul roads require the <br />special construction techniques required by Rules 4.03.1(3)(ii), (v), (vi), <br />f and (viij and revise the plans to show conformance with those requirements. <br />8. Numerous roads were constructed during the exploration operations which <br />are now used to access monitoring facilities. These roads must be shown on a <br />map and the information required by Rule 4.03.3 must be submitted. If any of <br />these roads are not in compliance with Rule 4.03.3, a plan to bring them into <br />compliance must be submitted. <br />Ponds, Impoundments and Diversions -Rule 2.05.3(4) <br />1. It is stated on page 4-41 that preliminary analysis indicates that <br />maximum seepage from the coal refuse impoundment will be about 50-60 gpm. <br />This seepage is anticipated to be collected in Sediment Pond B. However, <br />Sediment Pond B is not designed to contain any seepage from the coal refuse <br />impoundment. Sediment Pond B is designed to contain 2.2 acre feet of runoff <br />and sediment. Potentially 0.27 acre-feet of seepage could enter the pond each <br />day. Unless the pond is continuously dewatered, storage for a 10-year, <br />24-hour storm may not be available. Also, in the event of a dewatering system <br />failure, storage for a 10-year, 24-hour storm would not be available. <br />Storm King must revise the sediment pond designs to include storage for <br />seepage. <br />2. It is stated, on page 4-41 of Volume I that Sediment Ponds A and B will <br />be dewatered by pumping into the water recycling system. Designs for each <br />pumping station at the ponds must be submitted. Across section of the ponds <br />showing the location of the dewatering system should be included. <br />It is further stated on page 4-42 that "the pumping system will have the <br />capability to remove 90 percent of the volume of water stored during the <br />design storm within 10 days". This is unacceptable since sediment ponds are <br />required to be dewatered in 48 hours of a storm event. The pumping rate will <br />have to be increased or the pond enlarged to allow additional storage. <br />3. A figure of 90 pounds per cubic foot was used to convert tons of <br />sediment to acre-feet of sediment. In place sediments have been measured at <br />between 70 and 80 pounds per cubic foot. A value of 75 pounds per cubic foot <br />would be appropriate. Storm King must either revise the designs or submit <br />justification for the use of 90 pounds per cubic foot for sediment. <br />