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2016-10-20_PERMIT FILE - C1981035A (16)
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2016-10-20_PERMIT FILE - C1981035A (16)
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Last modified
9/11/2019 9:17:40 AM
Creation date
11/17/2016 7:04:53 AM
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Template:
DRMS Permit Index
Permit No
C1981035A
IBM Index Class Name
Permit File
Doc Date
10/20/2016
Doc Name
Monitoring Well Drilling
Section_Exhibit Name
KII 2.04.6 Monitoring Well Drilling
Media Type
D
Archive
Yes
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MONITORING WELL DRILLING, TR-26 <br /> GCC proposes to drill 4 monitoring well "clusters" of 3 wells each, numbered MW-1 <br /> thru MW-4 as shown in King II Appendix 4 (9), Baseline Monitoring Well <br /> Specifications, and one alluvial monitoring well in Hay Gulch, upgradient from the <br /> King I mine site (MW-HGA-4) as shown in King II Appendix 4 (13). MW-1, MW-3, <br /> MW-4 and MW-HGA-4 are outside of the existing permit area. MW-2 is within the <br /> existing permit area. Each cluster will consist of one hole drilled in the Menefee <br /> formation to just above the "A" coal seam, one will be drilled into the A coal seam, <br /> and the remaining hole will be drilled to below the A seam to a depth just above the <br /> "B" coal seam. Alluvial Well MW-HGA-4 will be a single well drilled into the Hay <br /> Gulch Alluvium. <br /> See King II Appendix 4(9), Bedrock Cluster Monitoring Well Specifications, for <br /> schematics and construction details of the bedrock cluster wells and Appendix 4(13) <br /> for schematics and construction details of the Alluvial Monitoring Well. Drilling will <br /> be with air, air with water injection or water. Cuttings pits will be necessary at all <br /> locations drilled by conventional methods (see drawing at Appendix 4(4)). Cuttings <br /> pits are excavated by a back-hoe and are approximately 6 feet wide by approximately <br /> 10 feet long. The pits are unlined and construction is the same for all drilling <br /> methods used. Locations of proposed holes and existing access roads are shown on <br /> the attached topography and drill hole locations map. <br /> A small cutting pit will be constructed to capture the cuttings. During final <br /> reclamation, all drill holes will be sealed by filling with cement to an elevation above <br /> the coal seam encounter, then replacing cuttings or other suitable media in the hole <br /> and placing a suitable plug 10 feet below the ground surface for support of a cement <br /> plug to within 3 feet of the ground surface. The plug will be covered with like material <br /> as in road base or topsoil depending which is present. Tracks will be raked or <br /> brushed to remove obvious signs of activity. <br /> Where topsoil is encountered within the area to be disturbed at a drill pad, the <br /> topsoil will be salvaged by scraping the suitable soil horizons to the upgradient side <br /> of the drill pad where they will be temporarily stockpiled. Topsoil will be salvaged to <br /> the depths described in Section 2.04.9 for the soil type encountered at the drill pad. <br /> As the time required for drilling is short, less than a few days per hole, stockpiled <br /> topsoil will not be seeded or otherwise actively stabilized. Topsoil will be replaced, <br /> stabilized, and reseeded after drilling, as described in the reclamation plan in Section <br /> 2.05.4. <br /> Given the small size and temporary nature of the drill pads, GCC requests that these <br /> areas be granted SAE (small area exemption) status with regard to sediment control. <br /> To ensure minimal impact from water erosion, each drill pad will have straw wattle <br /> erosion "logs" installed along the downgradient side or sides of the drill pad (See <br /> drawing in Appendix 4(4)). The straw wattles will filter any surface water runoff from <br /> the temporary drill pad during operations and will be left in place until reclamation of <br /> the drill pad is complete. <br /> GCC Energy, LLC King II Mine <br /> Section 2.04.6 <br /> Page 9 October 13, 2016 (TR-26 AR#2) <br />
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