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III IIIIIIIIIIIII III <br /> <br />Energy Fuels Mining Company <br />Raton Creek Mine <br />1997 Annual Hydrology Report <br />(Period January 1, 1997 through December 31, 1997) <br />Introduction <br />The 1997 Annual Hydrology Report (AHR) presents summarized hydrologic monitoring data <br />for the Raton Creek Mine operation for the reporting period. In addition, discussion and <br />comparison of these data with previous reporting periods are incorporated within the report. <br />The AHR is prepared and submitted in accordance with Rule 4.05.13 of the Regulations. <br />Monitoring data compiled for the AHR include the period from 1987 through 1997, the <br />period that Energy Fuels has operated the mine. Essential monitoring data collected and <br />presented in this AHR includes: groundwater quality and levels; diversion flow quantity and <br />quality; precipitation quantity; and quantity and quality of discharges to streams. <br />Groundwater <br />Two groundwater wells are monitored at the Raton Creek Mine, identified as the Iuppa Well <br />and the Refuse Well. Field and laboratory data collected from the monitor wells are <br />summarized as described below. <br />Water quality data for the Iuppa Well and Refuse Well are shown on Tables 1 and 2, <br />respectively. A review of monitoring data for each well through the period of this report <br />indicate that the parameters are generally consistent with previous years. Both wells indicate <br />slightly higher levels of hardness, sulfate, magnesium, calcium, and sodium for the reporting <br />period as compared to previous reporting periods. The elevated values of these parameters <br />may indicate ashort-term trend within the local area. Future monitoring will substantiate the <br />consistency of potential trends. Water quality in both wells remains within acceptable ranges <br />for material damage criteria. <br />Well levels for both monitoring wells are summarized on Table 3, and water levels data are <br />presented graphically Figures 1. A review of water levels data shows stable levels within an <br />approximately 2 foot range during the reporting period. In addition, the current well levels <br />are nearly the same as when Energy Fuels began monitoring. <br />The approved ground water monitoring program adequately monitors potential impacts of <br />mining on the ground water system. The data collected through the period of this report <br />indicate that no significant ground water impacts have occurred as a result of mining. <br />