2008-06-27_REPORT - C1980007 (6)

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0 Deep Creek Trail Spring Wat uality and Field Parameters • Mountain Coal West Elk Mine Monitoring Location : Deep Creek Trail Spring Baseline' 2007 Water Year Descri lion Units Minimum Maximum Mean° 1 5/29/2007 Q 5 7/2/2007 Q 5 8/9/2007 Q 5 9/1112007 Q 5 9/11/2007 (Duplicate) Q 5 9/27/2007 Q 5 9/27/2007 (Duplicate) 5 Field Parameters Flow m 1.24 3.51 1.63 3.51 1.29 1.48 1.34 1.34 1 24 1 24 Electrical Conductivity umhos/cm 400 479 461.14 400 445 475 479 479 . 475 . 475 H SU 7.72 8.07 7.86 8.07 7.88 7.98 7.83 7.83 7.72 7.72 Temperature oC 5.8 11.8 8.10 11.8 11.3 7.6 7.2 7.2 5.8 5.8 Temperature OF 42.4 53.2 46.6 53.2 52.3 45.7 45 45 42.4 42.4 Comment Laboratory Parameters 3 Name of Certified Lab z ACZ ACZ ACZ ACZ ACZ ACZ ACZ Lab Reference # L62928-03 L63600-02 L64362-01 L64966-02 L64966-03 L65367-02 L65367-01 Sample Date 5/29/2007 7/2/2007 8/9/2007 9/11/2007 9/11/2007 9/27/2007 9/27/2007 Lab Test Date 5/31-6/18 7/3-7/19 8/13-8/29 9/12-9/27 9/12-9/27 10/3-10/19 10/3-10/19 Sampled By I Alkalis (Total CaC03 m /I 161 236 211 161 167 212 234 233 235 236 Aluminum, dissolved m /l -0.03 0.11 -0.04 0.03 B 0.04 B 0.11 B 0.04 B -0.03 U -0.03 U -0.03 U Anions me /l 3.7 4.9 4.5 3.7 3.8 4.7 4.9 4.9 4.9 4.9 Arsenic, dissolved m I Arsenic, total m g-11 -0.0005 -0.0005 -0.0005 -0.0005 U -0.0005 U -0.0005 U -0.0005 U -0.0005 U -0.0005 U -0.0005 U Bicarbonate m I 156 232 208 156 167 212 229 226 232 232 Boron, dissolved m /I 0.02 0.02 0.02 0.02 B 0.02 B 0.02 B 0.02 B 0.02 B 0.02 B 0.02 B Cadmium, dissolved m /I -0.005 -0.005 -0.005 -0.005 U -0.005 U -0.005 U -0.005 U -0.005 U -0.005 U -0.005 U Calcium, dissolved m /I 29.4 40.3 37.4 29.4 35.5 37.1 40.0 39.6 40 40.3 Carbonate m /I -2 7 4 5 B -2 U -2 U 5 B 7 B 3 B 4 B Cation-Anion Balance m /l -1.1 9.5 2.2 0.0 9.5 -1.1 1.0 0.0 3.0 1.0 Cations me /l 3.7 5.2 4.7 3.7 4.6 4.6 5 4.9 5.2 5 Chloride m /I 1 2 2 2 B 2 B 2 B 2 B 2 B 1 B 1 B Conductivity umhos/cm 357 463 440 357 448 446 456 454 458 463 Copper, dissolved m /l -0.01 0.02 -0.01 -0.01 U -0.01 U 0.02 B - -0.01 U -0.01 U -0.01 U -0.01 U Hardness m /l 96 123 116 96 113 116 123 122 122 122 Hydroxide m /I -2 -2 -2 -2 U -2 U -2 U -2 U -2 U -2 U -2 U Iron, dissolved m /l -0.02 0.14 -0.05 0.03 B 0.14 0.09 0.06 0.04 B -0.02 U -0.02 U Iron, total m /l 0.14 1.63 0.79 1.42 0.59 1.63 0.85 0.78 0.14 0.14 Lead, dissolved m /I -0.04 -0.04 -0.04 -0.04 U -0.04 U -0.04 U -0.04 U -0.04 U -0.04 U -0.04 U Magnesium, dissolved m /I 5. 6 5.56 5.4 6.0 5.6 5.7 5.6 5.4 5.2 Man anese, dissolved m /I -0.005 -0.005 -0.005 U -0.005 U -0.005 U -0.005 U -0.005 U -0.005 U -0.005 U Man anese, total m /I 0.024 -0.012 0.016 B 0.01 B 0.024 B 0.014 B 0.013 B -0.005 U -0.005 U Mercu , total m /l K -0.0002 -0.0002 -0.0002 U -0.0002 U -0.0002 U -0.0002 U -0.0002 U -0.0002 U -0.0002 U Mol bdenum, dissolved m I -0.01 -0.01 -0.01 U -0.01 U -0.01 U -0.01 U -0.01 U -0.01 U -0.01 U Nitrate as N , dissolved m 1 Nitrate/Nitrite as N m /I 1.51 -0.66 0.02 U 1.51 .03 B 1.10 1.29 0.34 0.35 Nitrite as N), dissolved m /l pH SU 8.3 8.4 8.4 8.4 H 8.4 H 8.3 H 8.3 H 8.4 H 8.3 H 8.4 H Phosphate m /I -0.03 0.15 -0.05 0.03 B -0.03 U 0.15 .06 B 0.06 B 0.03 B 0.03 B Phosphorus Ortho , dissolved Potassium, dissolved m m -0.01 1 0.05 1.1 -0.02 1.04 0.01 1.1 H,B B -0.01 1.1 U B 0.05 1.0 B B 0.02 1.0 B B . 0.02 1.1 B B 0.01 1.0 H,B B 0.01 1.0 H,B B Selenium, total mg/l -0.001 -0.001 -0.001 -0.001 U -0.001 U -0.001 -0.001 U -0.001 U -0.001 U -0.001 Sodium Abso tion Ratio SAR calc. 1.85 2.47 2.22 1.85 2.15 2.14 2.29 2.27 2.47 2.37 Sodium, dissolved m /I 41.2 62 54.6 41.2 52.1 52.4 57.9 57.1 62.0 59.5 Sulfate m /I 10 20 14 20 B 20 B 20 r 10 B 10 8 10 B 10 B TDS Ratio calc. 0.96 1.16 1.05 1.16 1.11 0.96 1.00 1.01 1.03 1.04 TDS Calc. mg/l 198 262 243 198 217 246 259 258 262 260 TDS m /I 230 270 253 230 240 240 260 260 270 270 TSS Zinc, dissolved m /I mg/I -5 -0.01 60 0.02 20 -0.01 60 -0.01 U 14 0.02 B B 38 -0.01 U 16 0.01 B B 6 0.01 B B -5 0.01 U U -5 -0.01 U U ' Baseline 2007 Z ACZ Laboratory, Steamboat Springs, CO J Negative values denote readings below lab detection limits "Average (mean) value talc using 1/2 of detection limit for readings below lab detection limits unless all readings are below lab detection limit 5 ACZ Lab Qualifiers: U - Analyte was analyzed for but not detected at the indicated MDL H - Holding time exceeded; pH is a field test with an immediate hold time. B - Analyte conc detected at a value bet method detection limit (MDL) and practical quanlitation limit (PQL). iiii I.. E34 2007 Annual Hydrology Report HydroGeo, Inc.