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Marc Mine - 2006 Annual Hydrology Reporf <br />TABLE 5 -SITE 79J HISTORIC OVERBURDEN WATER QUALITY DATA <br />Parameters 2005 2006 <br />Tem °C 8.0 12.0 <br />H su 7.8 7.8 <br />E.C. mhos/cm 20°C 650 (`) 1224 <br />TDS 4305 4235 <br />SAR in water 44.9 45.3 <br />Calcium dissolved 67.5 67.5 <br />Sodium dissolved 1485 1500 <br />Ma nesium dissolved 10.5 10.7 <br />Potassium dissolved 23.5 23.3 <br />Sulfate 10.0 <10 <br />Chloride 2385 2230 <br />Carbonate as CaC03 <2 <2 <br />Bicarbonate as CaC03 276.5 300 <br />Nitrate-Nitro en dissolved 0.03 0.01 <br />Iron dissolved 2.60 0.55 <br />Man anew dissolved 0.105 0.079 <br />Maroh 2006 <br />Note: All values represent mean values for each water year in mgA unless otherwise noted. <br />' =Equipment malfunction <br />TABLE 6 -SITE 79-61 HISTORIC COAL SEAM WATER QUALITY DATA <br />Parameters 1997 1998 1999 2005 2006 <br />Tem °C 8.4 9.5 9.2 8.0 9.8 <br />H su 8.2 8.0 7.9 7.8 7.9 <br />E.C. mhos/cm 20°C 1165 1035 1130 200 (') 907 <br />TDS 710 670 740 590 617 <br />SAR in water 9.71 7.63 3.9 4.4 <br />Calcium dissolved 43.3 47.5 43.9 55.8 59.6 <br />Sodium dissolved 227 200 219 122.5 141.7 <br />Ma nesium dissolved 11.9 13.1 12.1 14.9 16.0 <br />Potassium dissolved 3.1 3.5 3.1 2.5 2.7 <br />Sulfate 68 70 30 110 73.3 <br />Chloride 20 55 12 10.5 23.7 <br />Carbonate as CaC03 3.5 5.5 <2 <2 54.0 <br />Bicarbonate as CaC03 562 503 566 393 453 <br />Nitrate-Nitro en dissolved <.02 <.02 <.2 0.01 0.01 <br />Iron dissolved .07 .03 .01 0.11 0.07 <br />Man anew dissolved 02 .02 .02 0.041 0.039 <br />Note: All values represent mean values for each water year in mg/I unless otherwise noted. <br />` =Equipment malfunction <br />Fik: 6371/106/2006 hydmlogy.pt Page 8 <br />