2015-02-10_REPORT - C1981041 (3)

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2014 AHR Page 2 During 2009, the rail spur lying south of 1.9 Road was reclaimed, graded and seeded. A phase III bond release (SL -5) was approved on the reclaimed conveyor corridor lying south of 1.9 Road, and a permit revision (PR -4) was approved to change the land use at the Unit Train Loadout from Fish and Wildlife to Industrial /Commercial. Halliburton Energy Services purchased the UTL and began construction of their commercial sand plant operations. During 2010 coal fines from the UTL were hauled to CRDA -1 and reclamation of CRDA -1 road was finalized in September. Ponds 1 and 2, sewage lagoons, topsoil pile 4 along with other areas of the UTL were reclaimed, regraded and reseeded. A phase III bond release (SL -6) was approved for the Commercial /Industrial portion of the South Portal. During 2011 Pond 7, sumps and ditches at the North Decline and Pond 8 at the South Portal were reclaimed, regraded and reseeded. A phase III bond release (SL -7) was approved for the UTL, Railroad Loop, the remainder of the conveyor corridor and the permanent flood control dike. During 2012 Ponds 6, 10, 11 and 13, CBA #1 Sump and miscellaneous sedimentation control features at the North Portal and along Coal Creek were reclaimed, regraded and reseeded. A permit revision (PR -5) was approved allowing Coal Creek and Coal Gulch to remain in their present alignment and allows for the North Portal upper diversion ditch and a portion of Topsoil Pile 2 to remain as permanent features. During 2013 Pond 9 was reclaimed, regraded and reseeded. No reclamation was performed in 2014. The general format of this report is the same as in previous years. Surface Water Water flow and quality on the Colorado River is monitored by the U.S. Geologic Survey (USGS) at various locations. The closest location is Station No. 09095500, which is located upstream approximately 7 miles north east of the mine site. Water quality and flow from this site are used as a general representation of the Colorado River up gradient of the mining operation. There is a diversion to the Government Highline Canal, the addition of Plateau Creek and the addition of other minor drainages between the monitoring site and the mine site. Data Pages SQ -87 through SQ -90 includes information supplied by USGS on this site during the 2014 Water Year. The total flow at this site for the Year was 3,403,000 acre -feet which is 122.5% of the normal average flow for the period 1934 - 2014 (2,777,000). The estimated TDS load for the Year was 1.38 million tons. This estimate is made by converting values for conductivity reported on page SQ -89 to TDS per acre feet and multiplying by the monthly flow in acre feet. The low flow for the Year was recorded as 986 CFS on December 7, 2013. The river was carrying approximately 0.72 tons of TDS per acre -foot on October 22, 2013, the closest data point. This flow and TDS load equates to approximately 1408 tons of Total Dissolved Solids, TDS, being carried by the river past the mine that day. The mine discharge on January 6, 2014 (the closest