REP39341

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 12/11/2001
• Doc Name: WEST ELK MINE 1998 ANNUAL HYDROLOGY REPORT-APPENDIX B-SURFACE WATER HYDROGRAPHS
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

• ~ •
Table C-10
Upper Dry Fork -Water Quality and Field Parameters
Baseline Sample Dates
Field Paramelen Units Minimum Maximum Mean 6/23/98 7/2/96 6/26/96 9/29/96
Flow cfs 13.52 11.69 1.76 1.4
Contlulivity (Fieltl) umhos/cm 30 30 40 40
pH (Field) SU 7.8 7 e 6 2 8.2
Temperature °C 8 2 9.7 15 8 10 2
Laboratory Parameters Units
Alkalindy, total mg/L 24
Aluminum, dissolvetl mg/L 0.16 0.16 0 16 0.12
Anions meq/L 0.7
Arsenic, total recoverable mg/L 0 002 0 002 0.002 0.003
Bicarbonate mg/L 22 140 64 24
Cadmium, dissolved mg/L 0 0 0 0 003
Callum, dissolved mg/L e 6 B.6 8.6 5.2
Carbonate mglL < 2
Callon -Anion Balance % -16 7
Cations meq/L 0 5
Chloride mq/L 0 49 7 3 < 1
Conduciiviry (LaD) umhoslcm 43 677 176 57
Copper, dissolved mg/L 0 0 0 001
Fluodtle mg/L < 0.1
Hartlness mg/L [9 96.46 49 18
Hydroxide mg/L c 2
Iron, dissolvetl mg/L 0 0 3 0.72 0.19
Iron, total mglL 0.17 27.2 3.93 15 9
Leatl. tlissolvetl mg/L 0 0 0 < 004
Magnesium, dissolved mg/L 1 2 1.7 1.45 1.1
Manganese, tlis501ved mg/L 0 014 0.024 0.016 0.018
Manganese. total mg/L 0.004 045 0.06 0.663
Mercury, total recoverable mg/L 0 0 0 < 0.0002
MolyDtlenum, dissolved mg/L 0 0 0 < 007
Nitrate/Nitrite (es N) mg/L 0.02 0.13 0 O6 0 13
NitrateMitrite (as N) mg/L 0.23
Nitrite (es N), dissolved mg/L 0.1
pH (Lab) units 6.1 6 2 7.44 6 3
Phosphate mg/L 0.33
Phosphate (Onho), tli55olvetl mg/L 0 3.19 0 27 0.109
Potassium, dissolved mg/L 0 4
Selenium, total recoverable mg/L 0 0 0 0 < 0.04
Sodium ADSOrbhon Ratio 0 26 1.16 0.7 0.42
Sotlium, dissolved mg/L 6 5 6.5 6.5 4
Sullate mglL 0 36 10.6 10
Total Dissolved Solitls (Lab) mg/L 30 45d 106 30
Total Suspendetl Solitls mg/L 1 6 568 97 576
Zinc, dissoNetl mg/L 0 0 0 0.01
Surraca9e xis West Elk Mine
5/12/99 1998 Annual Hydrology Report Wright Water Engineers