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CONCLUSIONS <br />Hydrologic sampling of three natural springs occurring above and below the mine site <br />showed no significant changes in parameter values during the 2005 water year that would <br />indicate concerns with water associated with the area of the coal mining operation. Spring <br />1 was flowing during April 2005 but was dry during the December 2005 inspection. <br />Springs 3 and 4 flowed during the April and October 2005 inspections. pH has generally <br />increased slightly in Springs 3 and 4 over the prior four water yeazs, though this water <br />year pH values decreased. The pH value in Spring 1 decreased again this year, continuing <br />a decrease first observed in water year 2003. Springs 3 and 4 have exhibited slight to <br />significant decreases in the concentrations of bicarbonate and manganese over the past <br />several years, though in October 2005 Spring 4 exhibited increased concentrations in <br />several ions including bicarbonate, calcium, chloride, magnesium, manganese, sodium, and <br />sulfate. Changes during the last three to four water years in magnesium and sodium <br />concentrations may well be linked to drought conditions over the last few water years in <br />the azea, or reclamation activities at the Ewing Mesa gravel operation. ff concentrations <br />decrease with vegetation growth at the reclamation site, the probable cause will have been <br />identified and the effects short-term. <br />Groundwater wells above and below the mine site showed few significant changes in <br />pazameter values during the 2005 water year. We1195-1 showed overall decreases in pH, <br />EC, TDS, chloride, and magnesium concentrations over time. Well 17-B (above the mine) <br />• revealed an increase in pH and EC this water year. We1195-1 showed slight elevations in <br />manganese concentration over water years 2002-2003, though these levels decreased <br />significantly this water year. <br />SEDIl~iENT POND INSPECTIONS AND DISCHARGES <br />The Carbon Junction Mine has two sediment ponds, 001 and 002. Michael Savage of <br />Savage and Savage, Inc. prepared inspection reports for both sediment ponds during the <br />first (November 9, 2004), second (January 30-31, 2005), third (April 5, 2005) and fourth <br />(July 15, 2005) quarters of the 2005 water yeaz. Sediment pond inspection reports are <br />included for the 2005 water year. No significant concerns were identified during the <br />inspections. <br />Sediment ponds 001 and 002 dischazged during January 2005. Sediment pond 002 also <br />discharged during April 2005. The results of those discharges are reported on the CDPS <br />discharge monitoring reports for that quarter. Copies of reports for the 2005 water year <br />aze appended to the end of this report. <br />n <br />t,J <br />Carbon Junction Mine Page 72 <br />Annual HyUrologic Report rar Water Year 2006 <br />