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1.0 INTRODUCTION <br />This report presents the ground -water and surface -water monitoring results for Trapper <br />Mine for 2014. Mining activities during 2014 include continued expansion of the Kimber (K) and L <br />pits. All other pits were not mined during 2014. Pit dewatering was conducted in only the K pit in <br />2014. Well dewatering was used in 2014 in the G pit area. <br />Ground -water monitoring of the aquifers associated with Trapper Mine started in 1974. <br />The ground -water flow regime has been divided into the major sandstones and coal/adjacent <br />sandstone aquifers. This division of the aquifer systems was selected at clay and shale units, which <br />have the potential to retard vertical movement. A pull -out index presents the schematic of the aquifer <br />units at Trapper on one side and the basic well data table on the other. It is suggested moving this <br />index sheet to the section of the report being reviewed. Aquifer properties are presented in Table 2 -1 <br />of the 1990 Annual Hydrologic Report. <br />The Twenty Mile Sandstone is the first major sandstone below the mined coal seam at <br />Trapper Mine. The U coal seam and adjacent sandstones is a minor aquifer between the mined coal <br />seams and the Twenty Mile Sandstone. The Q and R coal seams and sandstone between these two <br />coal seams have been labeled the QR aquifer. This is one of the major aquifers of interest because C, <br />D, E, F, G, K, L and Z pits have mined the Q and/or R coal seams, currently the K and L pits mine <br />the Q and R seams. The K, L, and M coal seams and the sandstones, which are stratigraphically in <br />this interval, are called the KLM aquifer. In 2014, the K pit mined the H, I2 K, LK, L, ML, LL, M, <br />MM, LM, Q and R seams and the L pit mined the I2, K, ML, M, MM, LM, Q and R seams. The <br />KLM aquifer is above the QR aquifer, but below the HI aquifer. The H and I coal seams and <br />sandstone between these two coals have been termed the HI aquifer and have been mined in the past <br />in the A, B, F, G, K, L and Z pits, currently the K and L pits mine the H and/or I coal seams. The D <br />Trapper Mining Company 1 -1 <br />2014 Annual Report <br />