2019-08-27_PERMIT FILE - C1981035A (8)

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SEALING MONITORING WELLS, TR -26 GCC drilled 4 monitoring well "clusters" of 3 wells each, numbered MW -1 thru MW -4 as shown in King II Appendix 4 (9), Baseline Monitoring Well Specifications, and one alluvial monitoring well in Hay Gulch, upgradient from the King I mine site (MW- HGA-4) as shown in King II Appendix 4 (13). MW -1, MW -3, MW -4 and MW-HGA-4 are outside of the existing permit area. MW -2 is within the existing permit area. Each cluster consists of one hole drilled in the Menefee formation to just above the "A" coal seam, one is drilled into the A coal seam, and the remaining hole is drilled to below the A seam to a depth just above the "B" coal seam. Alluvial Well MW-HGA-4 is a single well drilled into the Hay Gulch Alluvium. See King II Appendix 4(9), Bedrock Cluster Monitoring Well Specifications, for schematics and construction details of the bedrock cluster wells and Appendix 4(13) for schematics and construction details of the Alluvial Monitoring Well. Drilling was with air, air with water injection or water. Cuttings pits were necessary at all locations drilled by conventional methods (see drawing at Appendix 4(4)). Cuttings pits were excavated by a back -hoe and were approximately 6 feet wide by approximately 10 feet long. The pits were unlined and construction was the same for all drilling methods used. Locations of proposed holes and existing access roads are shown on the attached topography and drill hole locations map A small cutting pit was constructed to capture the cuttings. During final reclamation, all drill holes will be sealed by filling with cement to an elevation above the coal seam encounter, then replacing cuttings or other suitable media in the hole and placing a suitable plug 10 feet below the ground surface for support of a cement plug to within 3 feet of the ground surface. The plug will be covered with like material as in road base or topsoil depending which is present. Tracks will be raked or brushed to remove obvious signs of activity. Where topsoil has been salvaged and stockpiled, the topsoil will be re -spread evenly over the drill pad area where topsoil was located prior to drilling. The topsoil will be mulched (as necessary) and reseeded as described. Given the small size and temporary nature of the drill pads, GCC requested that these areas be granted SAE (small area exemption) status with regard to sediment control. To ensure minimal impact from water erosion, each drill pad will have straw wattle erosion "logs" installed along the downgradient side or sides of the drill pad. The straw wattles will filter any surface water runoff from the temporary drill pad during operations and will be left in place until reclamation of the drill pad is complete and vegetation has become established. The monitoring well sites will be re -seeded as described in Section 2.04.10. GCC Energy, LLC King II Mine Section 2.05.4 Page 20 July 11, 2017 (RN -07)