REP45258

• Permit No: C1984062
• IBM Index Class Name: Report
• Doc Date: 4/8/1998
• Doc Name: 1997 ANNUAL HYDROLOGY REPORT
• From: COLO YAMPA COAL CO
• To: DMG
• Annual Report Year: 1997
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

CYPRUS YAMPA I~ALLEY COAL CORPORATION •
1997 ANNUAL HYDROLOGIC REPORT
SUMMARY OF WATER QUALITY DATA

emnnury of wester gwOty dNn.bnr
Avenge Std. Marhmm~ MLdmmn Unit Com~l Br(In End
1 PHYSICAL PROPERTIES TEMPERATURE FIELD 9.906 4.0 24.000 2.000 DEGREES C 797 09/80 09N7
2 CONDUCTIVITY FIELD 1343.914 341.4 2170.000 360.000 UMHOS/CM 197 09/80 09N7
3 LAB 1394.093 273.6 2420.000 1180.000 UMHOS/CM 43 01/87 08/97
4 PH FIELD 7.307 0.4 8.300 6.100 PH 197 09/80 09N7
5 LAB 7.723 0.7 8.000 7.400 PH 4 01/87 08197
6 ALKALMITY TOTAL 311.139 21.4 379.000 254.000 MG/L 44 10/86 08/97
7 ACIDITY AS CAC03 21.667 12.1 71.000 8.000 MG/L 7 11/80 OS/BI
B HARDNESS TOTAL 738.446 II6.3 1180.000 516.000 MG/L 65 09/80 OBN7
9 SOLIDS DISSOLVED 1168.338 179.9 1970.000 808.000 MG/L 67 09/80 OBf97
10 SUSPENDED 38.000 0.0 38.000 38.000 MG/L 1 06/91 06/91
11 CATIONS CALCR1Ai DISSOLVED 181.682 30.3 277.000 113.000 MG/L 66 09/80 08197
12 AfAGNESRR.1 DISSOLVED 74.433 11.8 118.000 44.000 A1G/L 66 09/80 08/-7
13 SODR7M DISSOLVED 60.798 14.7 142.000 32.000 MG/L 66 09/60 08/97
14 POTASSR7M DISSOLVED 1.930 0.6 3.000 1.300 MG/L 10 09/80 04/67
15 SAR NOT APPLICABLE 1.267 0.2 2.146 0.970 UNDEFINED 63 09/80 06/97
16 ANIONS BICARBONATE AS HCOi 368.639 61.2 483.120 133.000 MG/L 66 IO/80 08/97
17 CARBONATE AS C03 0.673 3.1 16.800 -2.000 MG/L 22 10/82 08/97
18 HYDROXIDE AS OH -2.000 0.0 -2.000 -2.000 MG/L I1 12N4 08/97
19 CHLORIDE NOT APPLICABLE 10.391 2.0 14.000 6.000 MG/L 23 09/80 04/66
20 SULFATE NOT APPLICABLE 600.367 123.2 1070.000 380.000 A1G/L 67 09/80 06/97
2l PRIMARY ARSENIC DISSOLVED -1.623 2.2 4.000 -5.000 UG/L I6 II/80 04/89
22 BARRIM DISSOLVED -66.667 321.3 300.000 -300.000 UG/L 3 11/BO OS/8I
27 CADMRIM DISSOLVED -7.064 6.4 1.600 -20.000 UG/L 36 11/80 OS/-7
24 TOTAL RECOV UG/L 0 06/91 06/91
25 LEAD DISSOLVED -18.730 76.9 300.000 -200.000 UG/L 48 11/80 08P97
26 MERCUR}• DISSOLVED -0.166 0.8 3.000 -1.000 UG/L 36 I1/80 08/97
27 TOTAL RECOV UG/L 0 06N1 06/91
28 SELENIlJA1 DISSOL\'ED -0.464 3.2 16.000 -3.000 UG/L 36 11/80 08/97
29 TOTAL RECOV UG/L 0 06/91 06/91
30 SILVER DISSOLVED -77.773 3.8 -30.000 -40.000 UG/L 7 11/80 03/81
31 TOTAL RECOV UG/L 0 06N1 06NI
32 SECONDARY COPPER DISSOLVED -1.429 42.6 70.000 -30.000 UG/L 7 11/80 04/83
33 ZINC DISSOLVED 49.329 36.3 120.000 -10.000 UG/L 17 11/80 04/89
34 TOTAL RECOV UG/L 0 06/91 Ob/91
35 IRON DISSOL\'ED 325.152 1983.4 16000.000 60.000 UG/L 66 09/80 08/97
J6 TOTAL RECOV UG/L 0 06/91 06/91
37 MANGANESE DISSOLVED 1364.646 1167.3 4310.000 -20.000 UG/L 65 09/80 08/97
38 TOTAL RECOV UG/L 0 06N1 06/91
TABLE SA SITE: 08A\'2 (008-AV-Z)