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coals have been termed the HI aquifer and has been mined in the A, B, <br />and C pits. The 3rd White Sandstone (G coal and sandstone below) and <br />2nd White (F coal and sandstone below) Sandstone are monitored at <br />seven locations. The Lewis Shale is also monitored at one location. <br />The Johnson and Pyeatt Gulch alluvial aquifers are monitored at one <br />site in each of these drainages while the Flume Gulch alluvium is <br />monitored at two locations. The 1992 hydrologic monitoring report, <br />Hydro-Engineering (1993), presents the discussion of the monitoring <br />results through 1992. The table on the blue pull-out index provides <br />basic well data for all wells monitored in 1993. <br />Spoil springs with flows greater than 5 gpm are required to be <br />monitored to further define the ground-water quality. The flows from <br />all spoil springs were less than 5 gpm during 1993. <br />Table 1-1 (page 1-3) presents the pit and well dewatering data <br />and volume of water used for dust depression for Trapper Mine for • <br />1993. This data shows that, on an average, approximately 44 and 5.3 <br />gpm were pumped from the Trapper Mine pits and dewatering wells, <br />respectively. This data is useful in interpreting water-level <br />changes and consumptive use. <br />Surface-water flow and quality have been monitored at the Flume <br />(S-1), West Buzzard, Johnson, No Name, Coyote, Ote, and Elk drainages <br />during 1993. The Johnson, No Name, East Buzzard, Coyote, West <br />Buzzard, Ute, Middle Pyeatt, Elk, East Pyeatt, and West Pyeatt <br />drainages are Trapper's NPDES discharge sites 001, 002, 003, 005, <br />006, 008, 009, 010, 011, and 013, respectively. <br />NPDES sites 012 (Deer Gulch) and 014 (Far East Buzzard) were <br />installed in 1992 but no discharge has occurred. <br />.: <br />1-2 <br />