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Marr Mine - 2005 Annual Hydrology Report <br />February 2006 <br />TABLE 3 -SITE 79-1 HISTORIC OVERBURDEN WATER QUALITY DATA <br />Parameters 1997 1998 1999 2005 <br />Tem °C 8.9 9.9 9.1 7.5 <br />H su 8.3 7.6 8.0 7.9 <br />E.C. mhos/cm 20°C 2330 1900 2020 200 <br />TDS 1410 1180 1190 1180 <br />SAR in water 24 28.8 30.5 <br />Calcium dissolved 26.7 18.6 16.4 13.1 <br />Sodium dissolved 496 439 459 429 <br />Ma nesium dissolved 3.1 2.7 2.0 1.35 <br />Potassium dissolved 2.3 2.0 1.8 1.65 <br />Sulfate 615 380 170 10.3 <br />Chloride 44 69 210 243.5 <br />Carbonate as CaC03 <2 <Z <2 <2 <br />Bicarbonate as CaC03 452 512 626 706 <br />Nitrate-Nitro en dissolved <.02 0.03 <.02 0.01 <br />Iron dissolved .25 .10 .06 0.22 <br />Man anew dissolved .09 .10 .07 0.046 <br />Note: All values represent mean values for each water year in mg/I unless otherwise noted. <br />TABLE 4 - SITE T9-2 HISTORIC OVERBURDEN WATER QUALITY DATA <br />Parameters 1997 1998 1999 2005 <br />Tem °C 9.2 10.4 8.9 8.0 <br />H su 8.7 8.5 8.4 8.3 <br />E.C. mhos/cm 20°C 3225 3035 3170 350 <br />TDS 1705 1620 1750 1685 <br />SAR in water 49.5 29.9 45.6 <br />Calcium dissolved 72.6 13.7 22.1 11.4 <br />Sodium dissolved 729 692 655 623 <br />Ma nesium dissolved 2.2 3.0 9.2 1.9 <br />Potassium dissolved 3.4 2.9 3.0 2.9 <br />Sulfate 58 <10 50 5.03 <br />Chloride 755 735 700 730 <br />Carbonate as CaC03 <2 11 4 18.5 <br />Bicarbonate as CaC03 417 411 413 388.5 <br />Nitrate-Nitro en dissolved <.02 .04 <.02 0.01 <br />Iron dissolved .08 .11 .01 0.07 <br />Man anew dissolved .02 .03 .11 0.021 <br />Note: All values represent mean values for each water year in mgtl unless otherwise noted. <br />eae: e3n/zoos/zoos hraromgy Rc Page 6 <br />