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Energy Fuels Coal, Inc. Southfield Mine - 2004 Annual Hydrology Report Apri15, 2005 the 2004 water year are provided in Appendices A and B. Historic stream flow measurements (1979 - 1998) for Newlin, Magpie and Second Alkali Creeks are summazized in Table 9 Historic, Stream Flow Measurements, which has been placed into Appendix A. Stream flow measurements since 1998 are provided within this text in Table 9. Although the drought conditions were not as extreme during 2004 as the previous few years, only limited flows were observed in each of the drainages monitored. There was adequate precipitation received during the 2004 water year to generate ephemeral spring flows in Newlin Creek. Minimal and un-measurable flows were observed in Magpie Creek. Second Alkali Creek recorded no flows during the reporting period. The two remaining sedimentation ponds (Ponds 4 and 5) did not fill to the point of discharge during 2004. Surface water samples were collected only during June 2004. One sample was collected from each stream monitoring station. Current and historic field and laboratory water quality data for the surface water monitoring stations on Newlin, Magpie, and Second Alkali Creeks are summarized in Tables 10, 11, 14, 15, and 16. The 2004 water quality data was reviewed graphically and statistically. Generally the surface water quality in 2004 is fairly consistent with historic monitoring results. The 2004 results were compared to the historic average for that location. The most significant differences are listed below. Note that occasional high values can bias the average making comparisons difficult without a high level of statistical analysis. 2004 Monitoring • Magpie Creek Up Stream -conductivity and selenium were notably above the average value. Calcium, magnesium, aluminum, iron, manganese and zinc were notably less than the average values; • Magpie Creek Down Stream -nitrate/nitrite was notably above the average value. Copper and zinc were notably less than the average values; • Newlin Creek Up Stream -Iron was notably less than the average value; • Newlin Creek Down Stream -The 2004 results were very comparable to the average values at this site; A comparison of the up stream and the down stream historic average water quality monitoring results was made for each stream to determine potential impacts due to the mining activities. The most significant differences between up stream and down stream monitoring stations are listed below. Again, note that occasional high values can bias the average making comparisons difficult without a high level of statistical analysis. Comparison Down Stream to Up Stream • Magpie Creek -Total suspended solids and chloride decrease down stream. Sulfate and cadmium increase down stream notably greater than the up stream average; • Newlin Creek -Arsenic and manganese decrease down stream. Total suspended solids increase notably down stream. 64172004 annual hyd rpl.tloc NWCC ~NC. l~8gB 23