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2.1 -GROUND WATER-LEVEL -CE ANGES <br />ILI SU1V[1V1A-RY <br />Significant-mine- activities during 2013 included the continued expansion of the K pit and <br />initial mining in the L pit: Mining in the F pit; which started in 1997, ceased mining in 2011 with only <br />reclamation activities in 2012 and 2013 in this area. Mming was initiated in 2001 in the G pit, which <br />was idle in 2010 through 2013: The K pit was mined in the 12, K, LK, L, ML, LL, M, MM; LM, Q <br />and R seams in 2013. L pit mined in seams ML, M, MM, LM, Q and R seams in 2011 Dewatering <br />occurred in none of the pits during 201' 3. Well dewatering of 41.93 ac -ft was produced in 2013 near <br />the G pit. <br />Annual precipitation for 2013 was normal at 16.50 inches, compared to the Trapper record <br />and slightly above the long -term record (Figure 2 -1). The 2006; 2007; 2009, 2010 and -2011 <br />precipitation were above normal while the 2012 precipitation is significantly below normal and the <br />2013 precipitation at normal, relative to the Trapper average since 1978 (see Figure 2 -1). This year <br />was above, last year below and the previous. six years were significantly above the long -term record <br />average. Recharge in- thisgeographic setting is- directly related to precipitation. <br />The effects of natural recharge variations on the respective aquifers can be observed in <br />wells located- in- undisturbed- areas away from - the- influence- of mining activities. Wells GC -2, GC -3 <br />and GP-9 are used to indicate natural response in the past but need to be used with caution starting -in <br />2000- due- to mining moving into- this area. Well GC -3 exhibited the alluvial- water -level response <br />with a -very gradual -rise -in -water level -in 2013. The - effects on the 3rd. -White - Sandstone aquifer are <br />observed in wells GC -2 and-GP -9. Wells GC -2 and GP -9 show an overall fairly steady water level in <br />2013 showing minimum affects from the below average precipitation in 2012 and the above average <br />precipitation in 2013. The HI aquifer (GP -7) is characterized by a very gradual decline the last two <br />years after steady water levels for the previous years. The KLM aquifer showed a larger water -level <br />Trapper Mining Company 2-2 <br />2013 Annual Report <br />