2022-10-26_PERMIT FILE - C1981041 (5)

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was a combination of water contained within the B seam and that coming from the • . roof and floor. Water quality was typically adequate to discharge, though occasional problems with total suspended solids occurred. Routing the water through a settling pond solved the problem. The quantity and quality of B seam discharges are detailed in the annual hydrologic reports and are summarized below for the 1998 water year. pH =8.1 standard units Temperature = 52.2 OF Total Suspended Solids= 17.1 mg/1 Iron = 0.5 mg/I Conductivity=2363 Total Dissolved Solids = 1482 mg/fl Manganese (Single Sample) 0.029 mg/1 Table 12-4 shows the results of an analysis of the water coming out of the roof in the is' Left Panel. The sample was taken from an area where the roof was dripping at about 5 gallons per minute in one intersection. The results indicate this water is • similar to the B seam water. The total suspended solids, pH, and iron are higher than the average of the 1998 B seam water but still within the discharge permit limits. The total dissolved solids and manganese were lower than the B seam water. The water from the C seam was expected and is shown to be similar to the B seam water. No problems were expected regarding discharge of the water. Since the C seam overlies the B seam, areas where the B seam has been mined have probably de -watered the C seam. The Annual Hydrologic Reports indicate that the water entering the B seam works flows from the roof, floor and the coal. Areas in the B seam had water dripping from the roof for many years and continue to de -water the overlying strata. During the exploration mining, water entered the C seam works from the roof and along the bottom of the coal seam. Initially, the mine was advancing down dip so • water collected in the working faces. This made for difficult mining conditions since the floor was constantly wet and the movement of equipment created mud. The mine Volume 3 Tab 12 12-6 12102