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May 1999 1 <br />Energy Feels CoA4 Inc. 1998 Amm] Hydrolov, Report <br />The 1998 Annual Hydrology Report (AHR) presents summarized hydrologic monitoring data <br />and consumptive water use for the Southfield Mine operation during the reporting year <br />January 1, 1998 through December 31, 1998. Similar to previous reports, discussion of <br />hydrologic data and comparison of these data with previous reporting periods are incorporated <br />within the report. The AHR is prepared and submitted in accordance with Exhibit 25, <br />Hydrologic Monitoring Plan, of the permit application. <br />Energy Fuels Coal, Inc ( "EFCI ") operates the Southfield Mine located 8 miles south of <br />Florence, Colorado as shown on Figure 1. Coal is produced by underground room and pillar <br />mining methods. All run -of -mine coal is processed through the coal preparation plant to <br />remove rock impurities and produce sized products. The mine and associated facilities were <br />in active operating status during the full reporting period. <br />Monitoring data and information compiled for the AHR were collected in compliance with the <br />approved monitoring mss. In addition, data collected by the previous operator, <br />Dorchester Coal Company (1979 -1985) is included in data summary. Required monitoring <br />data collected and presented in this AHR includes: quantity and quality of mice inflows; <br />quantity and quality of discharges to streams; groundwater quality and levels; and stream flow <br />quantity and quality. <br />