REP19956

• Permit No: C1981019
• IBM Index Class Name: Report
• Doc Date: 3/2/1999
• Doc Name: 1998 ARR & AHR Exhibit 4 ALLUVIAL WELLS GROUND WATER INFORMATION
• Permit Index Doc Type: ANNUAL RECLAMATION REPORT
• Media Type: D
• Archive: No

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CO LOWYO MINE
SCa[ioP~ NGSW
Sample Range: Through 12/31/98
Samole Field Fie Ld Field Lab Lab TDS Phosph. Hicarb NH3 N03.N02 NOl N02
Date pH Temp Conduc[ pH Conduct (1801 as P as CaCO] SC4 as N aS N as N as N As Ca Fe Pb Mg !L4 Ng Se Na Zn
S.U, deg C umho/cm S.U. umho/cm mg/1 mg/1 mg/1 mg/1 mg/1 mg /1 mg/1 mg /1 mg/1 mg/1 mg/1 m g/L mg/1 mg/1 mg/1 mg/1 mg/1 mg/1
09/05/89 7.50 N SB22 '1.20 1850 1576 N 392 .00 ]]9. 00 0.38 -0. 01 -0.02 -0. 01 0. 002 195. 00 1.090 -0. 020 212 .000 0.250 -0 .00010 0 .002 62 .00 0 .160
10/05/89 ].70 N 1871 ].80 1710 1960 0.0'10 476 .00 706. 00 0.92 -0. 02 -0.02 -0. 01 -0. 001 129. 00 0.740 0. 030 117 .000 0.290 -0 .00010 0 .003 62 .00 0 .090
12/28/89 N N N 7.50 1800 1606 0.020 960 .00 829 .00 0.41 -0. 02 0.02 N 0. 001 208. 00 1.500 -0. 020 199 .000 0.390 -0 .00010 -0 .001 76 .00 0 .090
03/27/90 N N N 7.70 1650 1824 0.020 402 .00 926. 00 -0.05 N 0.07 -0. 01 0. 003 223. 00 0.350 -0. 020 230 .000 0.070 0 .00010 0 .002 9]. 00 0 .040
OS/30 /90 7.20 8.0 2170 7.70 2190 1876 0.090 46] .00 943. 00 0.31 N 0.15 -0. 01 0. 002 196. 00 1.9]0 -0 020 1]6 .000 0.470 -0 .00010 -0 .001 73 .00 0 .060
07/19/90 7.90 11.0 2180 ].60 2120 1826 0.060 455 .00 955. 00 0.11 N 0.40 -0. 01 0. 003 198. 00 1.400 O. OJO 172 .000 0.280 -0 .00010 -0 .001 69 .00 0 .030
11/19/90 N 12.0 N 8.00 2520 1840 0.020 463 .00 99]. 00 0.21 N 0.59 N 0. 001 192. 00 -0.020 -0. 020 179 .000 0.010 -0 .00010 -0 .001 73 .00 -0 .010
03/28/91 N 12.0 N 8.00 2160 1900 0.100 470 .00 807. 00 0.73 -0. 02 -0.02 -0. 01 0. 002 147. 00 2.100 0. 040 190 .000 0.500 0 .00020 -0 .001 83 .00 -0 .010
OS/1]/91 N 15.0 N 7.90 1930 1584 0.010 370 .00 836. 00 0.05 N 0.28 -0. 01 0. 001 150. 00 0.1]0 0. 060 147 .000 0.070 -0 .00010 -0 .001 83 .00 0 .020
08(19/91 N 10.0 N 8.50 1]70 1360 0.030 ]96 .00 1185. 00 0.42 N 0.05 N -0. 001 1]5. 00 0.960 -0. 020 166 .000 0.470 -0 .00010 -0 .001 89 .00 0 .150
10/17/91 N 13.0 N ].BO 2700 1]80 0.100 528. 00 867. 00 0.39 -0. 02 0.02 N 0. 002 195. 00 0.800 -0. 020 SB 8 .000 0.]20 -0 .00010 -0 .001 99. 00 0 .030
02/12/92 N 7.0 N 7.80 2940 1792 0.042 524 .00 926. 00 0.27 N 0.06 -0. 01 -0. 001 192. 00 0.530 -0. 020 191 .000 0.550 -0 .00010 -0 .001 98 .00 0 .010
05/14/92 N 11.0 N 8.30 1970 1818 0.07] 474. 00 971. 00 0.23 N 0.15 N 0. 003 184. 00 2.110 -0. 020 186 .000 0.560 -0 .00010 -0 .001 92. 00 -0 .010
08/19/92 N 11.0 N 7.40 1930 1666 0.051 506. 00 838. 00 0.1] N 0.04 N -0. 005 147. 00 1.230 -0. 020 137 .000 0.770 0 .00020 -0 .001 71 .00 0 .100
11/2-0192 N 5.0 N 7.90 1890 1582 0.04] 482. 00 929. 00 0.51 N 0.08 N 0. 005 167. 00 0.580 0. 020 162 .000 0.350 0 .00010 0 .010 86. 00 0 .010
03/13/97 N B.0 N 7.]0 1560 10]2 0.010 396. 00 667. 00 0.18 N 0.73 -0. 01 -0. 001 125. 00 0.040 -0. 020 129 .000 0.600 0 .00010 0 .006 61. 00 0 .010
06/01/93 7.80 B.0 1600 ].]0 1560 1248 0.050 392 .00 633. 00 0.25 -0. 02 -0.02 -0. 01 -0. 001 121. 00 0.260 -0. 020 129 .000 0.570 0 .00020 -0 .001 57 .00 0 .040
08/27/93 7.90 B.0 1850 7.60 1870 1712 0.018 430. 00 689. 00 O.lJ N 0.07 -0. 01 0. 003 190. 00 0.570 -0. 020 142 .000 0.990 -0 .00020 -0 .005 68. 00 -0 .010
11/30/9] 8.00 9.0 1830 8.70 1870 1398 -0.005 392. 00 69fi . 00 0.11 N 0.06 -0. 01 0. 002 150. 00 0.770 -0, 020 152 .000 0.750 -0 .00020 -0 .001 75 .00 -0 .010
07/21/94 7.50 ].0 2020 7.70 2040 1592 0.057 518. 00 774. 00 0.26 N 0.08 -0. 01 -0. 001 165. 00 0.310 -0. 020 165 .000 0.610 -0 .00020 -0 .001 79. 00 -0 .010
06/01/99 ]. ]0 9.0 1850 7.60 1833 1402 0.045 12. 00 708. 00 0.10 N 0.05 -0. 01 -0. 001 148. 00 0.500 -0. 020 149 .000 0.790 -0 .00020 0 .001 ]9. 00 -0 .010
08/23/94 7.20 9.0 1860 7.60 1870 14]0 0.037 428. 00 731. 00 0.28 N 0.02 -0. 01 O. OOJ 172. 00 0.410 -0. 020 161 .000 0.820 -0 .00020 -0 .001 88. 00 -0 .010
11/18/99 8.00 4.0 1940 7.60 1900 1990 0.0]9 460. 00 770. 00 0.20 N 0.04 -0. 01 0. 001 150. 00 0.310 -0. 020 150 .000 0.810 -0 .00020 -0 .001 79. 00 -0 .010
07/15/95 ].60 ].0 2050 7.40 2070 1620 0.028 985. 00 820. 00 0.13 N 0.18 -0. 01 0. 001 168. 00 O.aza -o. azo 169 .000 0.429 -0 .00020 -0 .001 87. 70 -0 .010
05/23/95 7.40 7.0 2000 7.30 2050 1620 0.045 457. 00 810. 00 0.21 N 0.06 N 0. 002 172. 00 0.800 -0. 020 174 .000 1.300 -0 .00020 -0 .001 88. 40 0 .020
09/13/95 7.50 11.0 2010 ].40 2000 1580 0.005 515. 00 799. 00 N N N -0. 01 -0. 001 178. 00 0.770 -0. 020 1]9 .000 O.B6B -0 .00020 -0 .001 88. 80 0 .020
12/05/95 7.50 12.0 2060 7.60 2060 1690 0.044 506. 00 ]90. 00 0.20 N 0.05 N 0. 002 169. 00 0.720 0. 020 1]5 .000 0.595 0 .00020 0 .001 89. 70 0 .020
02/20/96 7.80 17.0 1980 7.40 1920 1650 0.055 50]. 00 790. 00 -0.05 0. 15 0.15 -0. 01 -0. 001 171. 00 0.060 -0. 020 170 .000 0.129 -0 .00020 -0 .001 B4 . 40 0 .020
09/15/9fi 7.]0 12.0 1994 ].50 2130 1710 0.008 5]0. 00 750. 00 0.16 0. 19 0.19 -0. 01 -0. 001 174. 00 0.070 -0. 020 171 .000 0.265 -0 .00020 -0 .001 86 70 0 .020
07/01/96 7.90 17.0 2000 ].30 2061 1540 -0.005 516. 00 ]20. 00 0.11 0. 14 0.14 -0. 01 0. 002 1]7. 00 N -0. 020 1]7 .000 0.727 -0 .00020 -0 001 89. 60 -0 .010
09/2fi/96 7.60 8.1 1989 7.40 2027 1610 0.024 529. 00 770. 00 0.29 0. 13 N N 0. 001 173. 00 0.200 -0. 040 171 .000 O.B70 -0. 00020 -0 .001 92. 90 -0 .020
11719/96 7.40 8.1 16]3 7.80 1894 1660 0.300 557. 00 ]70. 00 0.54 0. 03 0.03 -0. 01 0. 002 181. 00 0.390 -0. 020 178 .000 0.851 -0 .00020 -0 .001 90. 70 •0 .010
02/25/97 ].40 7.2 1569 7.]0 2113 1660 0.028 552. 00 780. 00 0.23 0. 05 0.05 -0. 01 0. 001 180. 00 0.270 -0. 040 1]4 .000 0.]83 -0 .00020 -0 .001 88. 50 -0 .010
05/20/9'! 7.30 6.0 1517 7.]0 1930 1]50 0.019 518. 00 ]10. 00 0.22 -0. 02 -0.02 -0. 01 0. 001 185. 00 0.350 -0. Oa0 165 .000 0.764 -0 .00020 -0 .001 8]. 80 •0 .010
No[e: N => No mea suremenr, D => Dry