REP01710

• Permit No: C1981019
• IBM Index Class Name: Report
• Doc Date: 12/11/2001
• Doc Name: 1997 REPORT AND Exhibit 1
• Permit Index Doc Type: ANNUAL RECLAMATION REPORT
• Media Type: D
• Archive: No

Cotouyo Coal Company
COL04Y0 MINE
Station: LTC
Sample Range: Through 12/31/97
FIELD MEASUREMENTS
Field pN (S.U.}
Field Temperature (deg C)
Field Conductivity (umho/cm)
LABORATORY MEASUREMENTS
pH (Lab) (S.U.)
conductivity (Lab) (umholcm)
TDS (180 deg C) (mg/l)
Total Suspended Solids (mg/l)
Phosphate es P (mg/l)
Bicarbonate as CaC03 (mg/t)
Sulfate (mg/L)
Anmonia Nitrogen es N (mg/l)
Nitrate . Nitrite as N (mg/l)
Arsenic (mg/l)
Calcium (mg/l)
Iron (mg/l7
Lead (mg/l)
Magnesium (ng/l)
Manganese (mgll)
Mercury (mg/l)
Selenium (mg/L)
Sodium (mgll)
Zinc (ng/l)
Std Coef
Mean Dev Var
8.14
11.2 6.2 56
1606 374 23
7.99
1549 396 26
1117 340 31
581.6 2291.9 394
4.633 27.551 595
296.89 73.98 25
519.49 215.92 42
0.08 0.06 81
1.51 1.60 106
0.002 0.004 174
93.58 24.55 26
5.713 20.427 358
0.039 0.051 133
118.434 45.524 38
0.456 1.365 299
0.00033 0.00032 98
0.005 0.004 75
93.17 35.57 38
0.071 0.155 219
02/11/98 Page 1
Maximum Minimum Max Value Nin Value k of
Range Value Vel ue Found Found Samp
9.30 7.40 08/12/83 06/28/85 63
25.0 25.0 0.0 06/18/87 02/12/87 74
1809 2620 811 10/03/96 05/19/97 61
8.60 7.00 10/05/89 02/22/89 103
2130 2330 200 11/29195 02/28/90 103
1786 1930 144 10/05/89 02/28/90 49
20582.0 20584.0 2.0 03/01/88 11/30/88 103
184.995 185.000 0.005 03/31788 09113/95 45
391.00 467.00 76.00 11/18/97 02/28/90 45
1109.00 1128.00 19.00 10/05/89 02/28/90 45
0.22 0.24 0.02 02/28/90 06!15!83 38
4.93 4.95 0.02 06/28/85 11/09/90 37
0.027 0.028 0.001 03/01/88 05/31/85 45
106.00 134.00 28.00 02/24/86 02/22!89 45
131.990 132.000 0.010 02/28/90 09/13/95 49
0.280 0.300 0.020 02/28/90 06/15/83 46
230.000 238.000 8.000 10/12/88 02/28/90 41
7.845 7.850 0.005 03/01/88 09/13/95 44
0.00090 0.00100 0.00010 03/31/83 02/24/86 45
0.015 0.016 0.001 08/13/84 02/22/89 45
168.00 174.00 6.00 10/05/89 D2/28/90 45
0.795 0.800 0.005 02/28/90 06/15/83 45