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CDLONYO MINE Page 1 <br />SCation: NUGSC <br />Sample Range: Through 12/31/01 __ <br /> Std Coef Mazim um Minimum Max Value Min Value q of <br /> Mean Dev Var Range Valu e Val ue Found Found Samp <br />FIELD MEASUREMENTS <br />Field pH (S. U.1 8. 18 9. 40 7 .20 11/18/97 10/30/9] ]9 <br />Field Temperature (deg C) 7. 9 5 .2 66 21 .9 22. 0 0 .1 0]/06/98 12/18/96 108 <br />Field Conductivity (umho/cm) 1400 4]3 39 3012 3650 630 03/06/98 06/11/98 106 <br />LABORATORY MEASUREMENTS <br />pH (Lab) (S.U.) 8. 01 8 .50 7 .50 03/21/99 03/06/98 111 <br />Conductivity (Lab) (umho/cm) 1478 316 21 2842 3600 758 03/06/98 05/27/93 111 <br />TOS (180 deg C) Img/1) 1123 242 22 10]0 1610 590 OB/06/01 04/2]/98 40 <br />Total Suspended Solids (mg/1) 46. 6 122. 8 2fi4 993. 0 999. 0 1 .0 05/2]/93 10/15/92 111 <br />Phosphate ae P (mg/1) 0. 030 0. 042 141 0. 196 0. 198 0 .003 05/06/96 11/30/93 48 <br />Bicarbonate a9 CaCO3 (mg/1) 366. 58 44. 64 12 215. 00 430. 00 215 .00 11/18/94 10/08/98 48 <br />Sulfate (mg/1) 490. 92 13]. 05 28 570. 00 740. 00 170 .00 11/18/94 05/20/9] S1 <br />Ammonia Nitrogen ae N (mg/1) 0. 18 0. 62 350 3. 82 3. 84 0 .03 09/13/95 11/30/93 37 <br />Nitrate . Nitrite as N (mg/1) 3. 82 1. 36 36 fi. 32 6. 90 0 .58 11/18/94 04/2]/98 48 <br />Arsenic (mg/1) 0. 001 0. 001 66 0. 002 0. 003 0 .001 04/27/98 10/15/92 S1 <br />Calcium (mg/1) 122. 42 17. 4] 14 76. 00 153. 00 77 .00 12/05/01 06/01/93 57 <br />Iron (mg/1) 0. 050 1. 691 199 8. 530 8. 540 0 .010 05/1]/99 10/15/92 54 <br />Lead (mg/1) 0. 018 0. 022 123 0. 100 0. 100 0 .001 Ofi /26/9] 10/17/01 51 <br />Magnesium (mg/1) 117. 347 26. 496 23 109. 600 165. 000 55. 900 12/05/01 04/27/98 57 <br />Manganese (mg/1) 0. 051 0. 066 131 0. 288 0. 290 0. 003 05/1]/99 0]/31/00 49 <br />Mercury (mg/1) 0. 00020 0. 00018 91 0, 00045 0. 00050 0. 00005 04/2]/98 10/15/92 48 <br />Selenium (mg/1) 0. 012 0. 006 97 0, 032 0. 036 0. 004 0]/31/00 06/01/93 48 <br />Sodium (mg/11 42. 84 12. 69 30 58, 10 75. 00 16. 90 08/23/94 04/27/98 48 <br />Zinc (mg/1) 0. 024 0. 028 115 0, 135 0. 140 0. 005 06/01/93 11/23/92 48 <br />Below detection limit values included at 0.5 times detection limit <br />