2007-03-27_REPORT - C1980006

• Permit No: C1980006
• IBM Index Class Name: REPORT
• Doc Date: 3/27/2007
• Doc Name: 2006 Annual Hydrology Report
• From: Northwest Colorado Consultants Inc
• To: DRMS
• Annual Report Year: 2006
• Permit Index Doc Type: Hydrology Report
• Email Name: JHB
• Media Type: D
• Archive: No

~~~ Laboratories, Inc.
2773 Downhill Drive Steamboat Springs, CO 80487 [phone]
Kerr Coal Company ACZ Project ID: L56030
~f i ..
L56070-0t WG204874 Chlodtle M325.2 - Colodmetric RA Relative Percent Difference (RPD) was not used far data
validation because the sample concentration is too low for
accurate evaluation (< 10x MDL).
WG20474fi NitratelNitrite as N, dissolvetl M353.2 -AUtomatetl Catlmium RA Relative Percent Difference (RPD) was not used for tlata
Reduction validation because the sample concentration is too low for
acwrate evaluation (< 10x MDL).
Nitrite as N, dissolved M353.2 -Automated Cadmium R4 Relatve Percent Difference (RPD) was not used for data
Reduction validation because the sample concentration is too low far
accurate evaluatlon (< IDx MDL).
WG204928 Sulfate SM6500 S04-D RA Relative Percent Difference (RPD) was not used for tlata
valitlalion because the sample concentration is too low for
acwrate evaluation (< 10x MDL).
L56030-02 WG204874 Chloride M325.2 - Colodmetric RA Relative Percent Difffference (RPD) was not used for data
validation because the sample concentration is too low for
acwrate evaluation (< 10x MDL).
WG204746 Nitrate/Nitrite as N, dissolved M353.2 -Automated Cadmium RA Relative Percent Difference (RPD) was not used for data
Reduction validation because the sample concentration is too low for
accurate evaluation (< 10x MDL).
Nitrite as N, tlissalved M353.2 -Automated Cadmium RA Relative Percent Difference (RPD) was not used for data
Retluction validation because the sample concentration is too low for
acwrate evaluation (< tOx MDL).
WG204928 Sulfate SM4500 504D Pot Relative Percent Difference (RPD) was not used for tlata
validation because the sample concentration is too low far
accurate evaluation (< 10x MDL).
L56030.03 WG204874 Choride M325.2 - Colodmetr!c RA Relative Percent Difference (RPD) was not used for data
valitlalion because the sample concentration is too low for
accurate evaluation (< tOx MDLj.
WG204746 Nitrate/Nitrite as N, dissolved M353.2 -Automatetl Cadmium RA Relative Percent Difference (RPD) was not used for data
Reduction validation because the sample concentration is too low for
acwrate evaluation (< 10x MDL).
NiMte as N, dissolved M353.2 - Automatetl Cadmium RA Relative Percent Difference (RPD) was not used for data
Reduction validation because the sample concentration is too low for
accurate evaluation (< tOx MDL).
WG204928 Sulfate SM4500 S04-D RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
accurate evaluatlon (< 10x MDL).
L56030-04 WG205008 Sodium, dissolved M200.7 ICP D2 Sample required dilution. Target analyte exceeded
calibration range.
WG204874 Chloride M325.2 - Colorimetric RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
acwrate evaluatlon (< 10x MOL).
WG204746 Nitrate/Nitrite as N, dissolved M353.2 -Automated Cadmium R4 Relative Percent D'rfrerence (RPD) was not used for data
Reduction validation bepuse the sample mncenhation is too low far
accurate evaluation (< tOx MDL).
NiMte as N, dissolved M353.2 -Automated Cadmium RA Relatve Percent Difference (RPD) was not used for data
Reduction validation because the sample wncentration is too low for
acwrate evaluation (< 10x MDL).
WG204915 Residue. Filterable (TDS) @180C M160.1 - Gravimetnc ZO TDS concentration is based on a final resitlue greater than
200 mg.
WG204926 Sulfate SM4500 504-D RA Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too low for
acwate evaluatlon (< 10x MDL).
L56030-05 WG205008 Sodium, dissolved M200.71CP D2 Sample required dilution. Target analyle exceeded
calibration range.
WG204746 Nitrate/Nitrite as N, dissolved M353.2 -Automated Cadmium RA Relative Percent Difference (RPD) was no[ used for data
Retluction validation because the sample concentration is too low for
accurate evaluation (< 10x MDL).
NiMte as N, dissolved M353.2 -Automated Cadmium RA Relative Percent Difference (RPD) was not used for data
Reduction validation because the sample wncentmtlon is too low for
acwrate evaluation (< 10x MDL).
WG204928 Sulfate SM4500 S04-D R4 Relative Percent Difference (RPD) was not used for data
validation because the sample concentration is too law for
acwrate evaluation (< 10x MOL).
REPAD.15.06.05.01
L56030: Page 12 of 19