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ENERGY FUELS COAL, INC. SOUTHFIELD MINE ANNUAL REPORT OF INFLOWS, DISCHARGES AND CONSUMPTION OF {tiTATER WITHIN THE MINE 1989 AHR (July, 1989 through June, 1990) J MINE INFLOWS Inflows to the Southfield Mine have beer. estimated from pump discharge records of the North Entry well and the 8-crosscut sump pump. For the period of this report, approximately 17,164,000 gallons (53.2 AC-FT) flowed into the mine (refer to Table 1). Water pumped from the mine enters the surface water treatment system shown on Figure 2. No significant mine inflows occured as a result of mining during the reporting period. The majority of inflow continues to occur in the 1st North sump area from fractures connected with adjacent old mine workings. As required, field quality and quantity data were collected at accessible locations in the mine. Inflow and seep locations are indicated on Plate 1 (mine map), and field data summarized on Table 2. Comparison of the data presented here with those data presented in previous reports, indicates that only minor changes in mine water inflow quality and quantity have occured. The data collected indicate that there have been no detrimental impacts to water quality or quantity resulting from mine water inflows during the past year. MINE WATER DISCHARGES Mine water discharges to streams totalled approximately 7,693,000 gallons (23.6 RC-FT) for the reporting period (refer to Table 3). All discharge events are measured and sampled by methods approved in EFCI's Colorado Wastewater Discharge Permit. Discharge water quality data are summarized on Table 4. For the reporting period, one exceedence of permit total suspended solids limitations was reported, but occured Eor only a minor discharge event. All other discharges were well below discharge permit limitations. Discharge water quality for the reporting period indicates • that Southfield's water treatment system is working effectively and that discharges are not adversely impacting the stream system.