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2013 Annual Reclamation Report <br />Southfield Mine <br />agency had insufficient time to treat the Knappweed at Southfield. Consequently, EFCI pulled and <br />disposed of many of the Knappweed at the mine site. <br />During midsummer 2008, the Fremont County Weed Control Agency again sprayed the <br />Knappweed with the appropriate certified herbicide. During 2009, only one Knappweed was <br />identified and EFCI applied Roundup herbicide as prescribed. During 2010, and 2011 neither <br />EFCI nor the DRMS Inspector identified any more Knappweed at the site. During the reporting <br />periods of 2012 and 2013, it appears that the Knappweed patch has been eradicated. <br />During 2006, Dr. Corley as land owner of the Corley property, sprayed Tamarisk shrubs along <br />the mine entrance road and adjacent to the Magpie Diversion ditch at the east permit boundary. <br />Given that the spraying was executed by the land owner, EFCI does not have information on <br />details of the spraying procedure used. EFCI will continue to inspect these areas and will <br />implement necessary weed control measures consistent with approved management plans. <br />Subsidence Mitigation - Abandoned Canon National Mine site <br />As referenced above, during the previous reporting period, the landowner, The Corley Company, <br />had notified EFCI and the DRMS about six subsidence holes located at the abandoned Canon <br />National mine which is situate on the Corley property. The DRMS determined that EFCI had <br />mined beneath this area and that per EFCI's permit, EFCI was committed to mitigate the <br />subsidence features and the DRMS directed EFCI to submit a mitigation plan. <br />EFCI did so and following the Division's approval, in October, 2012, contracted with Kessler <br />Reclamation Company to repair the subsidence features. Kessler completed the approved <br />mitigation work October 23, 2012. A tracked excavator was used to first remove wood and debris <br />from the subsidence holes. Backfill material was from an abandoned spoils pile adjacent to the <br />subsidence holes that was believed to be from the Canon National mine operations. After trees <br />that had voluntarily grown in the pile had been removed, approximately 700 cu yds of fill <br />material from the pile was backfilled in the subsidence holes. The excavator bucket was used to <br />compact the lower portions of the Backfill and a front -end wheel loader was used to compact the <br />upper levels of the backfill. Topsoil from the contractor's property was sampled, analyzed and <br />truck hauled to the site. Five (5) to seven (7) inches of topsoil was spread on the backfilled holes <br />and the footprint of the removed portion of the spoils pile. The approved seed mix was broadcast <br />on the holes and pile footprints as well as the track that was used to access the site. At the <br />landowners request and with the approval of the Division, tree limbs from the tree removal <br />operation were chipped and spread as a mulch on the holes and the pile's footprints. On departure <br />from the site, the barbed wire fence and fence posts were replaced and the No Trespassing sign <br />was reinstalled. Seed mix tags, soil analysis and photos of the operation were submitted with the <br />2012 ARR. <br />Numerous other concerns of varying subjects were received from landowner Corley Company <br />during the report year. Many of the concerns were addressed by EFCI and the DRMS, other <br />3 <br />