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CO LOWYO MINE 01/27/99 Page 1 <br />Station: A-6 <br />Sample Range: through 12/31/98 <br /> Std Coef Maximum Minimum Max Value Min value p of <br /> Me an Dev Var Ra nge Va 1ue Va lue Found Found Samp <br />FIELD MEASUREMENTE <br />Field pH IS.U.I 7 .94 9 .10 7 .00 11/19/9'1 08/27/93 24 <br />Fie 1d Temperature Ideg C) 8 .6 3 .1 36 13 .0 16 .0 J .0 07/06/98 11/01/84 29 <br />Field Conductivity lumho/c m) 1135 212 19 1077 2000 927 02/19/98 09/26/96 23 <br />LABORATORY MEASUREMENTS <br />pH ILab) (S.U.) "1 .51 8 .60 7 .30 11/30/93 06/01/93 ll <br />Conductivity ILab) (umho/cml 1107 97 9 510 1490 930 OS/O1/86 09/27/96 31 <br />TDS (180 deg CI (mg/1) 673 88 '_3 490 910 920 OS/O1/B9 03/13/93 31 <br />Phosphate as P (mq/11 0 .096 0. 085 185 0. 481 0. 487 O .OOJ 02/20/96 11/30/93 31 <br />9icarbonace as CaCOJ (mg/11 479 .90 100. 01 21 532. 00 544. 00 12. 00 03/21/94 06/01/94 31 <br />Sul Eace (mg/11 199. 10 55. 24 3B LB0. 00 280. 00 100. 00 OS/01/B9 09/15/96 31 <br />Ammonia Nitrogen as N (mg/11 1. 31 0. 93 3l 1. 74 1. 76 0. 03 08/23/97 04/27/98 26 <br />Nitrate + Ni[ri[e as N Img/11 0. 68 0. 95 141 2. 80 2. 80 0. 01 11/19/96 07/06/98 1B <br />Nicra ce as N (mg/1) O. a2 0. 77 187 2. 79 2. 80 0. 01 11/19/96 08/19/92 22 <br />Nitrite as N (mg/11 0. 01 0. 00 27 0. 01 0. 01 0. 01 02726/97 O9j 19!92 23 <br />Arsenic (mg/11 0. 001 0. 001 72 0. 002 0. 003 0. 001 04/27/98 08/19/92 30 <br />Calcium (mg/11 66. 81 23. fi0 35 110. 00 169. 00 51. 00 11/18/97 08/19/92 31 <br />Iron (mg/1) 1. 570 2. 255 144 12. 695 12. 700 0. 005 07/06/98 11/18/97 30 <br />Lead (mg/11 0. 012 0. 009 33 0. 010 0. 020 0. 010 02/26/97 08/19/92 27 <br />Magnesium (mg/1) 58. 38 23. 20 40 127. 00 169. 00 92. 00 11/18/97 08/19/92 31 <br />Manganese (mg/L1 0. 049 O. OJ1 64 0. 150 0. 160 0. 010 08/01/94 09/27/98 31 <br />Mercury (mg/1) 0. 00019 0. 00018 9J 0. 00095 0. 00050 0. 00005 OB/01/89 08/19/92 ]0 <br />Selenium (mg/11 0. 002 0. 002 101 0. 007 0. 00] 0. 001 02/26/97 08/19/92 30 <br />Sodium (mg/11 115. 39 21. 77 19 116. 10 134. 00 17. 90 09/26/96 Oq/2]/99 ]1 <br />Zinc (mg/11 0. 019 0. 020 148 0. 095 0. 100 0. 005 03/17/93 02/01/86 31 <br />Below dececcion limit values included at 0.5 times dececcion limit <br />