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ENERGY FUELS COAL, INC. SOUTHFIELD MINE ANNUAL REPORT OF INFLOWS, DISCHARGES AND CONSUMPTION OF WATER WITHIN THE MINE 1991 AHR MINE INFLOWS Southfields total mine inflow quantity has historically been estimated from all underground inflows pumped to the 1st North and 8 crosscut sumps and subsequently discharged and metered through the North Dewatering Well. During the period of this report, however, EFCI has completed mining and sealed a large area of the west and lowermost end of the mine. Since completion of the seals, at least two inflow souroes have started whose flows are filling the abandoned mine works by flowing through the seals and/or through the rock just below the mine openings. Locations of the above inflows are identified as inflows nos. 8 and 9 on Plate 1, and corresponding quality and quantity data shown on Table 2. Mine water inflow quantity for the reporting period is estimated to be 34.6 AC-FT, comprised of 17.1 AC-FT et inflow nos. 8 and 9 referenced above, and North Well pump discharges of 17.5 AC-FT (refer to Table 1). As in previous years, water pumped from the North Well enters the surface water treatment system, shown in schematic Figure 2, then discharged to the stream system. • Seep and inflow locations for the reporting period are shown on a current mine map included as Plate 1. All field data and estimates of inflow quantity at specific locations shown on Plate I aze summarized on Table 2. Generally, the seep and inflow locations remain the same as those presented in previous AHR's, with the exception as those shown as inflow and seep nos. 8, 9, 11 and 12 on Plate 1. Inflow no. 12 is related directly to mining adjacent to the abandoned Monarch Mine, and possibly seep and inflow nos. 8,9 end 11 are connected to overlying abandoned mine worltings. A review of the field quality data for those seeps and inflows persisting for several years indicates no significant changes in water quality through the period of this report. MINE WATER DISCHARGE All mine water discharged from Southfields surface water handling system totaling 3.9 AC-FT for the reporting period is summarized and presented in Table 3. Discharges to the stream system flow through four discharge monitoring points and are measured and sampled in accordance with the approved Colorado Wastewater Discharge Permit. Water quality data as monitored at each of the above discharge points are presented in summary on Table 4. These data show that all discharges were within permit quality limitations during the period of this report. Consistent with previous AHR's, Southfields surface water treatment system effectively limits the impacts due to mining to the natural drainage system. lJ