2017-11-01_PERMIT FILE - C1981035A (14)

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WORST POSSIBLE CONSEQUENCES OF SUBSIDENCE The Huntington Pond, Ditch and Pipeline, as well as the Crawford irrigation ditches are the main water conveyance structures on permitted lands which could suffer damage due to the effects of subsidence. In the event that a surface subsidence crack were to intersect the ditch, it is possible that some of the ditch water would enter the crack and work its way into the mine workings. In the event that a surface subsidence crack were to intersect either irrigation ditch, that portion of the ditch which is (or is about to be) damaged can quickly be repaired using flexible plastic culvert to allow normal water flow. If subsidence damage occurs, GCC Energy, LLC has the necessary personnel and equipment to effect repairs. Surface owners have and will allow entry to complete such repairs (See Appendix 2(4)). Due to the ability of GCC Energy, LLC to quickly and effectively repair any subsidence related damage to the Huntington or Crawford structures, it has been determined that no material damage or diminution of reasonable foreseeable use could result in the event of mine subsidence within the permit and adjacent areas. The Marc Crawford residence could suffer damage due to the effects of subsidence. No mining is planned within 100 feet of Marc's house. A large block of un -mined coal will remain beneath this house to provide additional long-term support for this area. Using a conservative angle of draw of 35 degrees, it was determined that pillars will not be removed within 300 feet of the footprint of Marc Crawford's home. No mining is planned within 300 feet of John Crawford's home. The residence of Marc Crawford obtains its drinking water from a pond which lies approximately 1800' northeast of his house. A buried 2" pipeline runs parallel to the buried 10 inch PVC irrigation pipeline for most of its length. It then splits off to connect to the house about 150' northwest of the house. This pond and pipelines are shown on Map King I-005. Repairs to these pipelines could quickly be effected with a rented backhoe and either GCC personnel or a local contractor. The 10" irrigation pipeline is only used for irrigation in the warmer months. Should this pipeline be damaged, a temporary overland pipeline could be utilized until repairs were complete. If the 2 inch line was damaged, a portable cistern could be placed and domestic water trucked in until repairs were complete. If the pond were damaged, it would probably need to be re -lined with a custom built liner. This would require the services of a local contractor with a track hoe or other heavy equipment. Interim water would need to be provided using a temporary tank. Water would be hauled by truck to the site. In the event that the underground power line, underground phone line, or the line connecting the propane tank to the house was damaged due to the effects of subsidence, service would be interrupted briefly until repairs were complete. Temporary overland telephone and propane lines and a power generator could be installed by the utilities involved. GCC Energy would be responsible for these kinds of repairs. The residence of John Crawford obtains its drinking water from a pond which lies approximately 800 feet north of the John Crawford house. A buried 2" pipeline connects the house to the pond. This pond and pipeline are shown on Map King I- 005. Repairs to this pipeline could quickly be effected with a rented backhoe and either NKC personnel or a local contractor. If the 2 inch line was damaged, a portable cistern could be placed and domestic water trucked in until repairs were complete. If the pond was damaged, it would probably need to be re -lined with a GCC Energy, LLC King I Mine Section 2.05.6 Page 3 July 11, 2017 (RN -07)