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0 9 0 <br />TABLE B-7***NEW-2 Mine Shaft Center of Mine Summary of Water Quality Data <br /> STATISTICS <br />Parameters Year 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Mean Minimum Maximum <br />Depth, Mean feet 366.9 361.3 352.4 349.3 344.8 337.7 332.8 328.8 326.4 324.8 321.3 322.0 321.6 321.6 <br />Change DepthNear 5.6 8.9 3.1 4.6 7.1 4.9 4.0 2.4 1.9 1.1 0.2 0.8 0.1 3.4 0 <br />2 8.9 <br />Depth, Minimum feet 364.8 356.7 333.0 347.1 341.5 335.5 330.9 327.4 325.5 322.1 320.7 321.9 321.2 321.2 . <br />322 <br />1 <br />Depth, Maximum feet 370.2 364.2 356.3 351.4 346.6 339.9 334.0 330.7 327.3 327.4 321.8 322.0 322.0 322.1 . 370.2 <br />PH Mean (field) standard 7.94 8.22 8.45 8.32 7.9 7.3 7.5 8.2 8.28 8.1 8.62 8.75 8.15 8.13 <br />PH, Minimum (field) standard 7.15 7.1 7.63 7.65 7.4 7.9 7.8 7.8 7.55 7.1 <br />H Maximum field standard 8.51 8.67 8.84 8.67 8.48 8.4 8.76 8.7 8.63 76 <br />8 <br />H Lab standard 8.5 8.5 8.2 8.40 . <br />Conductivity, Mean umhosfcm 1459 660 990 973 972 410 1120 1059 1303 1363 1121 1155 540 1009.55 <br />Conductivity, Minimum umhos/cm 692 124 600 760 910 832 1100 1113 766.38 124 <br />Conductivity, Maximum umhos/cm 2190 1141 2186 1145 1031 1555 1505 1495 1531.00 2190 <br />Temperature, Mean °C 19.8 16.4 15.4 15.4 12 12.2 12.4 13.4 14.3 13.5 15.0 15.7 15.1 14.66 <br />Temperature, Minimum °C 17.4 14 9.6 10.2 6.5 11.7 12.5 12.4 11.79 6 <br />5 <br />Temperature, Maximum °C 22.3 18 18.6 19.2 15.2 16.9 16.01 15.6 17.73 . 22 <br />3 <br />Dissolved Oxygen m 6.8 3.7 5.25 . <br />Iron (total) mgA 0.61 1.61 0.39 0.4 1.1 1.36 0.61 0.9 2.15 0.41 0.14 0.88 14 <br />0 2 <br />15 <br />Iron (total recoverable) mgA 0.17 0.31 2.38 3.12 0.37 0.14 1.08 . <br />14 <br />0 . <br />12 <br />3 <br />Iron dissolved m 0.4 0.0007 0.09 0.38 0.09 0.13 0.18 . <br />0.0007 . <br />0 <br />4 <br />TSS mgA 14 34 <5 <5 14 <5 <5 20.67 <5 . <br />34 <br />TDS @ 180C mgA 740 470 610 620 670 1380 780 700 680 670 730 460 709.17 460 1380 <br />TDS (calculated) mgA 1060 478 619 643 655 767 728 674 727 705.67 478 1060 <br />TCS m <br />Carbonate mgA 27 <2 26 23 <1 26 40 <2 77 56 25 37.50 <1 56 <br />Bicarbonate m 577 389 464 495 543 601 533 547 526 546 342 505.73 342 601 <br />Manganese mgA <br />Manganese (total) mgA 0.014 0.582 0.005 <.005 '0.019 0.021 0.013 0.025 0.013 0.09 <.005 582 <br />0 <br />Manganese dissolved mgA <.005 <.005 0.012 0.024 0.012 <.005 0.01 0.005 0.005 0.01 <.005 . <br />0 <br />024 <br />Sodium mgA 602 122 362.00 122 . <br />602 <br />Sodium dissolved m 245 253 264 300 287 273 274 291 162 261.00 162 300 <br />Chloride mgA 9 8 7 8 5 8 7 7 7 5 7.10 5 9 <br />Sulfate m 58 50 50 50 50 60 50 40 47 35 49.00 35 60 <br />Calcium mgA 6.4 42.3 24.35 6.4 42 <br />3 <br />Calcium dissolved mgA 3.3 3.2 3.4 4 4.7 4.3 4.3 22.6 6.23 3.2 . <br />22 <br />6 <br />Magnesium mgA 3.2 17.4 2 -7.53 2 . <br />17 <br />4 <br />Magnesium dissolved m 1.1 1 1.2 1.5 1.4 1.4 1.4 1.5 4.0 1.61 1 . <br />4 <br />Potassium mgA 5.7 3.8 4.75 3.8 7 <br />5 <br />Potassium dissolved m 7 6 5.7 6.8 7.9 8.0 7.3 7.7 4.4 6.76 4.4 . <br />8 <br />0 <br />Hydroxide mgA <2 <2 <2 <2 <2 <2 <2 <2 . <br /><2 <br />Fluoride m 1.2 0.7 1.4 1.1 1.10 0.7 1 <br />4 <br />Lead mgA <.02 0.09 0.090 <.02 . <br />0 <br />09 <br />Lead dissolved m <.001 0.001 '0.002 0.0007 <br />0.000 <br />0.0007 . <br />0 <br />002 <br />Selenium mgA 0.005 0.003 0.004 0.003 . <br />0.005 <br />Selenium dissolved m 0.01 0.005 0.005 0.005 0.002 0.005 0 <br />01 <br />SAR standard 49.1 4.03 30.2 32 31.7 32.8 30.2 29.6 29.7 31.1 8.35 28.07 4.03 . <br />49 <br />1 <br />Settleable Solids mgA . <br />Zinc mgA <br />Hardness m 29 13 12 13 16 18 17 17 17 73 22.50 12 73