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Kurt Blunt <br /> Page 2 of 3 <br /> 6/24/2018 <br /> The total incidental inflow of water into the mine was 8.21 gpm in the 2018 water <br /> year. The value is in the predicted range of 5 to 10 gpm. In May of 2012 a <br /> dewatering pump system was installed to pump excess water captured in the <br /> underground mine to the surface. Water pumped to the surface from the B Seam <br /> in the 2017- 2018 water year was 19,851498 gallons or 37.77 gpm. Water was <br /> not pumped from the SDH-3/5 D-Seam Dewatering System during the 2017-2018 <br /> water year was 112,930,560 gallons or 214.86 gpm. . <br /> - Predicted by the PHC, Monitoring wells in close proximity to the mine workings <br /> show a decrease in piezometric levels. One well, 294U, was subsided in 2013 <br /> and the well became blocked. Wells 30-8M and 32-7U were dry. Seven wells <br /> showed an increase in piezometric level and three wells showed a decrease in <br /> piezometric level. Three wells have been plugged to eliminate connection with <br /> the surface; 294M, 32-7M and 32-7L. Well Qal-5 is the only remaining alluvial <br /> well. The data from the full suite analysis are all within the historical ranges. <br /> - The point of compliance well, 22-3M, was sampled for the correct parameters and <br /> frequency in the 2018 water year. Field measurements for pH, conductivity, <br /> temperature and water level were completed in August. Samples were collected <br /> and analyzed in a lab for total dissolved solids, dissolved iron and dissolved <br /> manganese. <br /> The effects of subsidence on Red Wash were predicted to be short-term. Ponding <br /> in the stream bed and surface cracks in the alluvium were created by subsidence <br /> of the drainage. Red Wash contains a high content of clay and silt sediments that <br /> have filled in the cracks and depressions, maintaining the original stream channel. <br /> Scullion Gulch has no observed surface hydrologic consequences due to the <br /> effects of subsidence. <br /> - Discharge monitoring reports indicate that the D Seam Dewatering System and <br /> the Sewage Treatment Plant discharged during the 2018 water year. The 2018 <br /> AHR indicated that Outfall 001, DP-1, and Outfall 029, B Seam Dewatering <br /> System, also recorded discharge during the 2018 water year (2018 AHR p. <br /> 10). Please clarify the discrepancy between the DMRs and the 2018 AHR. <br /> The Facilities Area pond PP-2 did not discharge to Scullion Gulch during the <br /> 2018 water year. There was no discharge to Red Wash from any of the ponds <br /> treating water from the refuse disposal area. Ponds RP-1, RP-2/3/4 and RP-5 are <br /> designed to treat all the run-off from the waste piles. There are no springs or <br /> seeps located in the refuse disposal area. The ponds associated with the Slot <br /> Storage and Rail Loadout did not record any discharge. The mine site also <br /> receives a low amount of annual precipitation. <br />