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Marr Mine - 2007 Annual Hydrology Report <br />TABLE 4 - SITE 79-2 HISTORIC OVERBURDEN WATER QUALITY DATA <br />May 2007 <br />Parameters 1997 1998 1999 2005 2006 2007 <br />Tem °C 9.2 10.4 8.9 8.0 11.0 9.81 <br />H su 8.7 8.5 8.4 8.3 8.4 8.41 <br />E.C. mhos/cm 200C 3225 3035 3170 350(-) 1535.5 26811 <br /> <br />TDS <br />1705 <br />1620 <br />1750 <br />1685 <br />1693 , <br />1700' <br />SAR in water 49.5 29.9 45.6 45.2 45.3, <br />Calcium dissolved 12.6 13.7 22.1 11.4 11.9 12.5 <br />Sodium dissolved 729 692 655 623 633 641 <br />Magnesium dissolved 2.2 3.0 9.2 1.9 2.0 1.8 <br />Potassium dissolved 3.4 2.9 3.0 2.9 3.0 3.2 <br />Sulfate 58 <10 50 <10 <10 <10 <br />Chloride 755 735 700 730 767 787. <br />Carbonate as CaC03 <2 11 4 18.5 21 26 <br />Bicarbonate as CaC03 417 411 413 388.5 401.7 385.7 <br />Nitrate-Nitrogen diss <.02 .04 <.02 0.01 0.01 0.011 <br />Iron dissolved .08 .11 .01 0.07 0.07 0.03' <br />Manganese dissolved .02 .03 .11 0.021 0.018 0.020, <br />Note: All values represent mean values for each water year in mg/I unless otherwise noted <br />* = Equipment malfunction <br />TABLE 5 - SITE 79-3 HISTORIC OVERBURDEN WATER QUALITY DATA <br />Parameters 2005 2006 2007 <br />Temp °C 8.0 12.0 9.7 <br />H su 7.8 7.8 7.9 <br />E.C. mhos/cm 200C 650(') 1224 1579 <br />TDS 4305 4235 4217 <br />SAR in water 44.9 45.3 46.1 <br />Calcium dissolved 67.5 67.5 64.5 <br />Sodium dissolved 1485 1500 1487 <br />Magnesium dissolved 10.5 10.7 9.9 <br />Potassium dissolved 23.5 23.3 22.0 <br />Sulfate 10.0 <10 <10 <br />Chloride 2385 2230 2373 <br />Carbonate as CaC03 <2 <2 <2 <br />Bicarbonate as CaC03 276.5 300 296.7 <br />Nitrate-Nitrogen dissolved 0.03 0.01 0.017 <br />Iron dissolved 2.60 0.55 0.057 <br />Manganese dissolved 0.105 0.079 0.087 <br />Note: All values represent mean values for each water year in mg/I unless otherwise noted. <br />* = Equipment malfunction <br />6371/2007/2007 hydrology rpt <br />Page 7