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COLOWYO MINE <br />Station: LCi$C <br />Sample Range; Through 12/31(00 <br />Page 1 <br /> Std Coef Maximum Minimum Max Value Min Value # o£ <br /> Mean Dev Var Range Val ue Val ue Found Found Samp <br />FIELD MEASUREMENTS <br />Field pH (S.U.) 7. 87 9 .30' 6 .50 11/18/97 06114!82 154 <br />Field Temperature (deg C) 9. 9 6. 2 62 25 .6 25 .0 -0 .6 07/26/82 12/18/96 200 <br />Field Conductivity (u mhoj cm) 1622 339 21 2088 2900 812 10)03/96 OS/17{99 154 <br />LABORATORY MEASUREMENTS <br />pH (Lab) (S.V.) 7. 85 8 .50 6 .10 00/19/91 OSj14f 92 234 <br />Conductivity (Labs (u mho/cm) 1662 326 20 2659 2820 161 01/19/93 06(23/92 218 <br />TDS (180 deg C) (mg/1J 1307 370 28 3330 9050 720 11J08/00 05/23/96 110 <br />Total Suspended Solids (mg/1) 76. 4 292. 6 383 3fi 99 .0 3700 .0 1 .0 04130J85 10(16/91 233 <br />Phosphate as P ~ (mg/1) 0. 041 0. 097 115 0 .348 0 .350 0 .003 02/29/86 11/30/93 88 <br />Bicarbonate as CaC03 (mg/1) 386. 93 73. 87 19 499 .00 524 .00 30 .00 O1{06/98 OS{14J92 90 <br />Sulfate (mg/11 646. 33 166. 41 26 685 .00 945 .00 260 .00 12/04/B9 05/20(97 40 <br />Ammonia Nitrogen as N (mg/1) 0. 11 0. 26 236 2 .26 2 .26 0 .01 12/09/B9 07/27/89 79 <br />NStrate + Nitrite as N (mg/1) 2. 86 2. 39 89 7 .99 8 .29 0 .30 12/26(85 08j17J92 75 <br />Araettic (mg/1) 0. 001 0. 002 151 0 .018 0 .018 0 .001 04/07/82 09(18(85 90 <br />Calcium (mg/11 138. 25 28. 84 21 140 .00 208 .00 68 .00 12/28)89 03/13/84 93 <br />Iron Img/l) 0. 646 0. 670 104 4 .245 4 .270 0 .025 04(27(98 11)08(00 97 <br />Lead (mg/1) 0. 017 0. 018 107 0 .138 0 .190 0 .003 07/27/89 07/31/00 90 <br />Magnesium (mg/1) 192. 163 31. 781 22 149 .400 226 .000 76 .600 12)04/89 05/20/97 94 <br />Manganese (mg/1) 0. 118 0. 060 51 0 ,318 0 .320 0 .003 04/07/82 07/31/00 88 <br />Mercury (mg/11 0. 00019 0. 00020 107 0 .0009 5 0 .00100 0 .00005 04/07/82 02/24/86 90 <br />Selenium (mgJ1) 0. 007 0. 005 69 0 .030 0 .030 0 .001 10/09/89 11j09j90 90 <br />Sodium (mgf l) 67. 81 23. 8? 35 112 .30 132 .00 14 .70 10(08/98 04/17/00 42 <br />Zinc (mg/1) 0. 017 0. 026 156 0 .198 0 .200 0 .003 08/19/91 03/29/83 90 <br />Below detection Limit values included at 0.5 times detection limit <br />