REP00919

• Permit No: C1980006
• IBM Index Class Name: Report
• Doc Date: 1/12/1999
• Doc Name: 1998 ANNUAL HYDROLOGY REPORT 1 OF 2 PN C-80-006
• Annual Report Year: 1998
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

January 1999 Ken Coal Compmry '" 1998 Annua! Hvdrolo,~s• ReDo>'t "CO Pernut No. C 80006 • Pnee I6

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TABLE 6
HISTORIC LOADOUT AREA ALLUVIAL WATER QUALITY DATA
SITE AP-7
Parameters 1994 1995 1996 1997 1998
Temp (°CI 9.1 7.7 8.7 8.6 9.5
pH Isul 7.9 7.5 7.6 7.8 7.75
E.C. INmhos/cml @ 20°C 429 467 467 500 467
TDS 292 349 340 363 340
SAR (in water) 0.53 0.49 0.53 0.53 0.56
Calcium (dissolved) 46 53 53.5 55.3 47.4
Sodium Idissolvedl 20 20 21.6 22.1 21.6
Ma nesium Idissolvedl 40 47 45.3 47.8 40.9
Potassium Idissolvedl 0 < 1 0.8 1.2 1.1
Sulfate 22 47 30.3 36.7 33.3
Chloride 4 3 6.7 9 6.7
Carbonate las CaC03) 0 <2 <2 ~ <2 <2
Bicarbonate las CaC031 289 317 305 324 297
Fluoride 0.6 0.5 0.55 0.6 0.47
Nitrate-Nitro en Idissolvedl 0.02 0.06 0.03 <0.02 <0.02
Iron (dissolved) 0.20 0.54 0.34 0.09 0.19
Man anese Idissolvedl 0.41 0.55 0.591 0.918 0.581
Aluminum Idissolvedl 0.11 0.12 0.08 <0.03 <0.03
Barium Idissolvedl 0.10 0.10 0.09 0.09 0.092
Boron Idissolvedl 0.04 0.04 0.04 0.05 0.047
Cadmium Idissolvedl <0.005 <0.005 <0.003 <0.003 <0.003
Chromium Idissolvedl <0.01 <0.01 <0.01 <0.01 <0.01
Copper Idissolvedl <0.01 <0.01 <0.01 <0.01 <0.01
Lead Idissolvedl <0.02 <0.02 <0.02 <0.04 <0.04
Mercury Idissolvedl <0.0002 <0.0002 <0.0002 <0.0002 <0.0002
Molybdenum Idissolvedl 0.02 <0.01 <0.01 <0.01 <0.01
Nickel Idissolvedl <0.02 <0.02 <0.01 <0.01 <0.01
Phos horns lortho dissolved) <0.01 <0.005 0.03 <0.005 0.009
Vanadium Idissolvedl <0.01 <0.01 <0.005 <0.005 <0.005
Notes: All values in mg/I unless otherwise noted.
. All values represent mean annual values.
Montgomery Watson ' P.O. Box 774018 'Steamboat Springs, Colorado 80477' (970J 8796260
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