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2.1 GROUND WATER-LEVEL CHANGES <br /> 2.1.1 SUMMARY <br /> Significant mine activities during 2019 included the continued expansion of the L pit. <br /> Mining in the F pit, which started in 1997, ceased mining in 2011 with only reclamation activities in <br /> 2012 through 2019 in this area. Mining was initiated in 2001 in the G pit, which was idle in 2010 <br /> through 2019. The K pit was mined in the K, MK, LK, ML, LL, M, Q and R seams in 2015 with <br /> only reclamation activities in 2019. L pit mined in seams H, H1, H2, H3, I1, I2, I3, K, MK, LK, <br /> ML, M, MM, LM, Q, UQ, MQ and R in 2019. Dewatering occurred in only the L pit during 2019 <br /> with a volume of 26.69 ac-ft pumped. Well dewatering of 34.68 ac-ft was produced in 2019 near the <br /> G pit. <br /> Annual precipitation for 2019 was above normal at 17.83 inches, compared to the Trapper <br /> record and long-term record(Figure 2-1). The 2013 through 2015 and 2017 precipitations were at or <br /> above normal while the 2016 and 2018 precipitation were below normal, relative to the Trapper <br /> average since 1978 (see Figure 2-1). Two of the last three years were above normal while the 2018 <br /> was below normal. Recharge in this geographic 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 gradual decline in water levels in 2019 after the rise in November 2018 and February 2019. <br /> The effects on the 3rd White Sandstone aquifer are observed in wells GC-2 and GP-9. Wells GC-2 <br /> and GP-9 show an overall steady water levels in 2019 showing minimum affects from the below <br /> average precipitation in 2018 and the above average precipitation in 2017 and 2019. The HI aquifer <br /> Trapper Mining Company 2-2 <br /> 2019 Annual Report <br />