Laserfiche WebLink
2012 Reclamation Report <br />Southfield Mine <br />2013. <br />Weed Control Activities <br />In 2005, one small plot of Knappweed had been identified adjacent to and at the west edge of the <br />parking lot site in the eastern portion adjacent to County Road 92 on the Vento property. The <br />agent with the Fremont County Weed control Agency sprayed the Knappweed with the certified <br />herbicide during 2005 and again in the 2006 season. During 2007, given the heavy vegetation <br />growth in the region that season and the resulting demand on the county weed control agency, the <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 report <br />period of 2012, apparently the Knappweed had 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 />Landowner, The Corley Company, had notified EFCI and the DRMS about six subsidence holes <br />located at the abandoned Canon National mine which is situate on the Corley property. The <br />DRMS determined that EFCI had mined beneath this area and that per EFCI's permit, EFCI was <br />committed to mitigate the subsidence features and the DRMS directed EFCI to submit a <br />mitigation plan. <br />EFCI did so and in October, 2012, contracted with Kessler Reclamation Company to repair the <br />subsidence. Kessler completed the approved mitigation work October 23, 2012. A tracked <br />excavator was used to first remove wood and debris from the subsidence holes. Backfill material <br />was from an abandoned spoils pile adjacent to the subsidence holes that was believed to be from <br />the Canon National mine operations. After trees that had voluntarily grown in the pile had been <br />removed, approximately 700 cu yds of fill material from the pile was backfilled in the subsidence <br />holes. The excavator bucket was used to compact the lower portions of the backfill and a front - <br />end wheel loader was used to compact the upper portions of the backfill. Topsoil from the <br />contractor's property was sampled, analyzed and truck hauled to the site. Five (5) to seven (7) <br />inches of topsoil was spread on the backfilled holes and the footprint of the removed portion of <br />the spoils pile. The approved seed mix was broadcast on the holes and pile footprints as well as <br />7 <br />