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,~ III IIIIIIIIIIIIIIII Energy Fuels Mining Company Raton Creek Mine 1996 Annual Hydroloev Reps Period January 1, 1996 through December 31, 1996 This report presents surface and groundwater data collected at the Raton Creek Mine site during the above reporting period. Included with the report, per Rule 4.05.13(4), are water quality and quantity data obtained from each monitoring site, interpretation of the data, and identification of mining related impacts to the hydrologic balance. 1. Water quality data obtained from each monitoring site. Water quality data is summarized on the following tables: Refuse Well: Table 1 Iuppa Well: Table 2 Permanent Diversion: Table 3 2. Water quantity data obtained from each monitoring site: Water quantity data is summarized on the following tables and figures: Precipitation Summary: Table 4 Refuse Well Water Levels: Figure 1 Iuppa Well Water Levels: Figure 2 3. Interpretation of the data and identification of mining retated impacts to the hydrologic balance: The quality data for the Iuppa Well and the Refuse Well indicate that the parazneters are within the range shown for previous reporting periods. At the Iuppa Well, levels of sulfate and calcium are elevated during the last quarter of the reporting period. Future monitoring will substantiate the consistency of potential trends. Water quality in both wells remains within acceptable ranges for material damage criteria. No surface flows in the Permanent Starkville diversion channel were observed during the reporting period. Quality data shown in this report is summarized for previous reporting periods. Well levels for both monitoring wells within the range of measurements for the previous reporting period. Water levels in the Iuppa Well varied during the year, probably as a result of pumping activities. Water levels in the Refuse Well are consistently 2 to 3 feet below historic levels. The water levels appear to have been affected byfinal reclamation of the refuse pile. The water levels in both wells do not indicate any adverse impacts due to mining.