REP05275

• Permit No: C1980006
• IBM Index Class Name: Report
• Doc Date: 1/12/2000
• Doc Name: 1999 ANNUAL HYDROLOGY REPORT COLO PN C-80-006
• Annual Report Year: 1999
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

January ?000 Kerr Coal Company * 1999 Arsnual Hydrology ReDart * CO Permet iVo. G80~006 ~ Pape 18
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TABLE 7
HISTORIC LOADOUT AREA ALLUVIAL WATER QUALITY DATA
SITE AP-2
Parameters 1995"~ 1996 1997 7996 1999
Tem 1°C) 7.3 10.0 10.6 12.5 11.0
H (sul 7.7 7.6 7.9 7.8 7.9
E.C. ( mhos/cml @ 20°C 567 517 571 517 483
TDS 589 467 373 333 340
SAR lin water) 3.58 1.72 1.01 0.82 0.77
Calcium Idissolvedl 44.0 57.6 54.6 53.6 56.3
Sodium Idissolvedl 121.0 68.8 38.9 31.7 30.1
Ma nesium Idissolvedl 34.0 40.5 36.8 36.7 37.1
Potassium Idissolvedl 3.0 2.2 1.8 2.8 1.7
Sulfate 92.0 50.7 40 30 37
Chloride 10 10 7 9 9
Carbonate las CaCO31 4 <2 <2 <2 <2
Bicarbonate las CaCO31 438 432 320 294 307
Fluoride 0.3 0.45 0.40 0.37 0.4
Nitrate-Nitro en Idissolvedl 0.08 0.2 0.03 0.02 0.06
Iron Idissolvedl 0.59 0.30 0.10 0.13 0.06
Man anese Idissolvedl 0.31 0.79 0.56 0.29 0.15
Aluminum Idissolvedl 0.22 <0.02 <0.03 <0.03 0.02
Barium Idissolvedl 0.20 0.15 0.12 0.13 0.12
Boron Idissolvedl 0.08 0.06 0.05 0.05 0.06
Cadmium Idissolvedl <0.005 <0.003 <0.003 <0.003 <0.003
Chromium Idissolvedl <0.01 <0.01 <0.01 <0.01 <0.01
Co er Idissolvedl <0.01 <0.01 <0.01 <0.01 <0.01
Lead Idissolvedl <0.02 <0.02 <0.2 <0.04 <0.04
Mercury Idissolvedl <0.0002 <0.0002 <0.0002 <0.0002 <0.0002
Molybdenum Idissolvedl <0.01 <0.01 <0.01 <0.01 <0.01
Nickel Idissolvedl <0.02 <0.01 <0.01 <0.01 <0.01
Phos horns lortho dissolved) 0.05 0.47"' 0.01 <0.005 0.008
Vanadium Idissolvedl 0.02 0.005 <0.005 <0.005 <0.005
Notes: All values represent mean annual values in mg/I unless otherwise noted.
~"The means include data from a sample collected on 5/3/95 which contains anomalous
values for many parameters based on comparison with prior and subsequent samples.
"' The mean includes a result from the sample collected 10/17/95, which is anomalous,
based on com orison with prior and subsequent sam les.
Montgomery Wauon * P.O. Boz 774078 * Steamboat Springs, Colorado 80477 * (970J 8796260
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