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West Elk Mine <br />. decrease significantly but the width of the flood would increase. Road crossings and low-lying <br />agricultural lands could be inundated. Irrigation diversions and related structures could be damaged <br />or destroyed. Homes built within the flood plain may be damaged as well. Livestock and wildlife <br />should be able to move to higher ground. Residents of the farms within the lowest portions of <br />floodplain would most likely observe the steady rise in stream flow and escape to higher ground. <br />Those displaced by the floodwaters would likely contact local emergency services that would in <br />turn begin the appropriate evacuation of residents living downstream along Minnesota Creek. Once <br />the floodwaters reached the North Fork of the Gunnison, the lazger channel would convey the <br />Minnesota Reservoir water with minimal affects to man-made structures and the natural channel <br />walls. <br />Detailed Description of Damage or Diminution of Reasonable Use Which Could Result from <br />Subsidence Related Phenomena 2.05.6(6)(e)(ii)(A-C) <br />Based upon the anticipated subsidence phenomena previously described in this section, and the <br />general scazcity of structures and renewable resource lands, MCC and WWE conclude that there <br />will be little, if any, damage or destruction of reasonable use within the MCC permit area. <br />The "worst possible consequence" to the newer, wood-framed building and livestock enclosure <br />would be complete destruction to Mautz Cabin (now Lazy H) over the Jumbo Mountain Lease <br />azea. The building that is apparently utilized as seasonal sleeping quarters for cattle operations <br />and hunting was constructed after the SNW longwall panel was developed and longwall mining <br />in this panel had begun. The smaller "bunkhouse" building and livestock enclosure were <br />• constructed after longwall mining was complete in both the SNW and 6NW longwall panels. <br />They are located approximately over the eastern-most pillaz of the SNW longwall panel <br />headgate, near crosscut #17 and approximately 90 feet southeast of monitoring well SOM C- <br />72H. The landowner had been provided updated mine plans in December 1993, and thus, was <br />aware that mining would occur under the site. <br />Another structure exists in the Dry Fork Basin and is known as Lower Cow Camp. This <br />structure is used by the cattle pool as seasonal living quarters for the rmge cowboy. The cabin is <br />owned by the USFS and leased to the Dry Fork Cattle Pool. This cabin and related corrals were <br />inventoried and aze included in Exhibits 60D and 73. <br />Subsidence impacts in the vicinity of theses structures were projected based on a conservative <br />twenty-five degree (25°) angle-of--draw and an overburden depth of approximately 800 feet. <br />Mining in the B Seam occurred in the vicinity of the building in late November 1994 and had <br />progressed two cross-cuts past it by late December 1994. The building and site were measured, <br />surveyed and photographed in early November 1994, prior to possible subsidence impacts. <br />Subsequent surveys and photographic records were begun in early December 1994, and were <br />continued approximately weekly until January 1995, then bi-monthly through March 1995, when <br />mining of the panel was completed. Regulaz monitoring (weekly, then bi-monthly, as above) <br />were conducted when the 6NW longwall panel was mined past this azea. Maximum subsidence, <br />as presented in Exhibit 60, is not expected at this location, but maximum stresses are anticipated, <br />as the building is located at the edge of the panel. Because MCC will compensate for, repair or <br />• replace the building in compliance with CMLRB Rule 4.20.3(2), no material subsidence damage <br />will result, as defined by CMLRB Rule 2.05.6(6)(e)(ii)(A). <br />1.05-161 - Revised June 2005 PRIG, Rev. March 2006; M¢y 1006 PRIO <br />