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Lolowyo Coel Company 02/11/98 Page 1 <br />COLOYYO MINE <br />St a[ion: LGSC <br />Sample Range: Through 12(31(97 <br /> Std Coef Maximum Minimum Max Value Min Value # of <br /> Mean Dev Var Range Value Value Found Found Samp <br />FIELD MEASUREMENTS <br />Field pH (S.U.) 7. 80 9.30 6.50 11/18/97 06/14/82 119 <br />Field Temperature (deg C) 10. 0 6.2 62 25.6 25.0 -0.6 07/26/82 12/18/96 169 <br />Field Conductivity (umho/cm) 1630 324 20 2064 2900 836 10/03/96 05/20/97 118 <br />LABORATORY MEASUREMENTS <br />pH (Lab) (S.U.) 7. 84 8.50 6.10 08/19/91 05/14/92 198 <br />Conductivity (Lab) (umholcm) 1653 346 21 2659 2820 161 01/19143 66/23792 182 <br />TDS (180 deg C) (mg/l) 1272 259 20 1114 1834 720 12/04/89 05/23/95 96 <br />Total Suspended Solids (mg/l) 84. 8 317.2 374 3698.0 3700.0 2.0 04/30/85 09/30/91 197 <br />Phosphate as P (mg/l) 0. 042 0.048 113 0.345 0.350 0.005 02/24/86 11/30/93 76 <br />Bicarbonate as CaC03 (mg/l) 383. 10 73.31 19 487.00 517.00 30.00 08/09/90 05/14/92 78 <br />Sulfate (mg/l) 659.36 168.96 26 685.00 945.00 260.00 12/04/89 05/20/97 78 <br />Anmonia Nitrogen as N (mg/l) 0. 12 0.28 222 2.25 2.26 0.01 12/04/89 07/27/89 67 <br />Nitrate + Nitrite as N (mg/L) 2. 91 2.52 87 7.99 8.29 0.30 12/26/85 08/17/92 63 <br />Arsenic (mg/L) 0. 002 0.002 130 0.017 0.018 0.001 04/07/82 05/31/85 78 <br />Calcium (mg/l) 140. 72 28.88 21 140.00 208.00 68.00 12/28/89 03/13/84 81 <br />Iron (mg/l) 0. 613 0.579 94 3.070 3.100 0.030 06/01/93 02/01/88 83 <br />Lead (mg/l) 0. 029 0.018 63 0.120 0.140 0.020 67127/84 06/15!83 78 <br />Magnesium (mg/l) 144. 846 31.618 22 149.400 226.000 76.600 12/04/89 05/20/97 82 <br />Manganese (mg/l) 0. 129 0.052 40 0.290 0.320 0.030 04/07/82 08/04/86 77 <br />Mercury (mg/l) 0. 00028 0.00027 96 0.00090 0.00100 0.00010 04/07/82 02/24/86 78 <br />Selenium (mg/l) 0. 007 0.005 70 0.029 0.030 0.001 10/04/89 11/09/9D 78 <br />Sodium (mg/l) 65. 84 20.64 31 103.00 131.00 28.00 10/04/89 07/06/83 BO <br />Zinc (m9/l) 0. 018 0.024 128 0.195 0.200 0.005 08/19/91 03/29/83 78 <br />