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2013 AHR Page 2 <br />III bond release (SL -5) was approved on the reclaimed conveyor corridor lying south of 1.9 <br />Road, and a permit revision (PR -4) was approved to change the land use at the Unit Train <br />Loadout from Fish and Wildlife to Industrial /Commercial. Halliburton Energy Services <br />purchased the UTL and began construction of their commercial sand plant operations. <br />During 2010 coal fines from the UTL were hauled to CRDA -1 and reclamation of CRDA -1 road <br />was finalized in September. Ponds 1 and 2, sewage lagoons, topsoil pile 4 along with other <br />areas of the UTL were reclaimed, regraded and reseeded. A phase III bond release (SL -6) was <br />approved for the Commercial /Industrial portion of the South Portal. <br />During 2011 Pond 7, sumps and ditches at the North Decline and Pond 8 at the South Portal <br />were reclaimed, regraded and reseeded. A phase III bond release (SL -7) was approved for the <br />UTL, Railroad Loop, the remainder of the conveyor corridor and the permanent flood control <br />dike. <br />During 2012 Ponds 6, 10, 11 and 13, CBA #1 Sump and miscellaneous sedimentation control <br />features at the North Portal and along Coal Creek were reclaimed, regraded and reseeded. A <br />permit revision (PR -5) was approved allowing Coal Creek and Coal Gulch to remain in their <br />present alignment and allows for the North Portal upper diversion ditch and a portion of Topsoil <br />Pile 2 to remain as permanent features. <br />During 2013 Pond 9 was reclaimed, regraded and reseeded. <br />The general format of this report is the same as in previous years. <br />Surface Water <br />Water flow and quality on the Colorado River is monitored by the U.S. Geologic Survey (USGS) <br />at various locations. The closest location is Station No. 09095500, which is located upstream <br />approximately 7 miles north east of the mine site. Water quality and flow from this site are used <br />as a general representation of the Colorado River up gradient of the mining operation. There is <br />a diversion to the Government Highline Canal, the addition of Plateau Creek and the addition of <br />other minor drainages between the monitoring site and the mine site. Data Pages SQ -82 <br />through SQ -86 includes information supplied by USGS on this site during the 2013 Water Year. <br />The total flow at this site for the Year was 1,678,000 acre -feet which is 60.6% of the normal <br />average flow for the period 1934 - 2013 (2,769,000). The estimated TDS load for the Year was <br />1.19 million tons. This estimate is made by converting values for conductivity reported on page <br />SQ -85 to TDS per acre feet and multiplying by the monthly flow in acre feet. The low flow for <br />the Year was recorded as 608 CFS on December 23, 2012. The river was carrying <br />approximately 1.13 tons of TDS per acre -foot on December 10, 2012, the closest data point. <br />This flow and TDS load equates to approximately 1363 tons of Total Dissolved Solids, TDS, <br />being carried by the river past the mine that day. The mine discharge on January 7, 2013 (the <br />closest monthly analysis), was 290 gpm @ 1320 mg /I TDS; resulting in approximately 2.3 tons <br />of TDS being discharged. Comparing the calculated TDS load in the River at low flow and the <br />mine discharge near the same date, the maximum increase in the River's TDS as a result of <br />