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April 21, 2015 C- 1981- 035/King Coal Mine MLT <br />subsidence - related impacts. The lining is still in good condition (Photo 11). Mr. Huntington <br />said a ditch loss study was conducted as part of the process of developing the decree by <br />which a portion of his shares are leased to GCC. The study showed that losses were <br />negligible. <br />• Part of the Huntington Lateral is directed into a pressurized PVC pipeline. A pond <br />constructed at the intake allows continuous flow in the line (Photo 12). The pipeline is 15" in <br />diameter at the upstream end, and is then reduced to 12" and 10" further down the line. Mr. <br />Huntington uses three traveling "big guns" to irrigate his fields, which produce hay that is <br />later cut and baled. <br />• The Crawford family owns properties generally south of Pine Gulch, on CR 121. Subsidence <br />cracks were discovered near Marc Crawford's residence in 2002. We met with Tom <br />Crawford, who showed us where the cracks had been. He said the mine originally dispatched <br />an employee to repair some of the cracks, but that the others healed with time. After we left <br />the property, Mr. Crawford sent a photo of one crack that still exists, next to a two -track road <br />northeast of the Crawford homes. The crack was approximately one foot deep and 6 inches <br />across. <br />AVAILABILITY OF RECORDS Rule 5.02.4(1): <br />• Records were available for review in Tom Bird's office at the King 11 Surface Facilities. A <br />completed DRMS Availability of Records form is attached to this report. <br />OTHER (PUBLIC COMMENTS): <br />• In March, OSM received a letter from J.T. Coyne, a resident of the Hay Gulch area. Mr. <br />Coyne indicated that Davin Montoya (also a resident) told him subsidence had occurred that <br />disrupted the irrigation ditch. By chance, we encountered Mr. Montoya as we drove across <br />his property to access the Huntington parcels. Mr. Montoya indicated he had not experienced <br />any problems with his irrigation flow as a result of the mine's operation. <br />DOCUMENTS RECEIVED <br />• Mr. Bird distributed copies of a map and an aerial photo that illustrated the relationship <br />between the King I underground workings and surface features (pipelines and ditches) that <br />would be of interest during the subsidence portion of the inspection. <br />Number of Partial Inspection this Fiscal Year: 8 <br />Number of Complete Inspections this Fiscal Year: 4 Page 5 of 13 <br />