Laserfiche WebLink
10. Please describe how flood water will be returned to the river or otherwise managed following <br />a large flood. <br />11. The Applicant indicated groundwater is approximately 5-6ft. below the ground surface. <br />Please provide any documentation (boreholes logs or piezometer data) demonstrating the <br />depth to groundwater. <br />12. Will shale stockpiles be present on the site or will the excavated shale be placed directly onto <br />the pit slopes? <br />6.4.5 Exhibit E - Reclamation Plan <br />13. The Applicant stated under the current permit that the zone of Pierre shale occurs at a depth <br />of 26 feet below the ground surface. However, the Applicant has indicated in the Amendment <br />Application that the Pierre shale occurs at a depth of 17 feet below the ground surface. Please <br />clarify if the Pierre shale occurs at a depth of 17 feet or 26 feet below the ground surface. <br />14. Under the current permit, the Applicant stated a trapezoidal berm would be constructed' <br />around the perimeter of the pit. The construction of a trapezoidal berm was not included in <br />the amended Reclamation Plan. Please clarify if a berm will be included in the Reclamation <br />Plan. <br />15. The Operator has constructed a visual berm along the northeast corner of the permit <br />boundary. Please specify if the berm will be removed upon the completion of mining. <br />16. The Applicant has stated the soil liner will be covered with water as soon as practical in order <br />to prevent desiccation. The water level of the ponds is likely to fluctuate, which could result <br />in the top portion of the liner being exposed to the elements. In order to prevent desiccation <br />of the top portion of the clay liner, the Division recommends placing overburden and/or <br />topsoil on the top 6 feet of the clay liner. Please commit to placing topsoil over the top 6 feet <br />of the clay liner or demonstrate that the water level of the ponds will not drop below the top <br />level of the clay liner. <br />17. The proposed 55 acre reservoir will have a fetch distance of over 1,000 feet. As such, there is <br />the potential that wave action could lead to the erosion of the pit banks. Please describe how <br />erosion from wave action will be mitigated for or demonstrate to the Division that erosion <br />from wave action will not impact the stability of the reservoir banks. Possible mitigation <br />measures may include armoring the pit banks with riprap. <br />18. Please specify the final storage volume of each of the reservoirs. <br />19. The Mining Plan states that water from the pits will be pumped into the sediment pond before <br />it is discharged to the river. Please describe how the sediment pond will be reclaimed upon <br />completion of mining. Also, provide the anticipated volume of the sediment pond.