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Lower North Fork <br />Surface Water Quality and Field Parameters <br />• <br />• <br /> <br />Mountain Coal West Elk Mine <br />' <br />2007 Water Year <br />Monitoring Location N. Fork Lower Baseline <br /> <br /> 10/16/2007 <br /> i imum <br />Mi Maximum Mean 4/26Y2007 5/2412007 Q ° 8/22/2007 Q ° 10/16!2007 Q ° (Duplicate) ° <br />Description ts <br />Un n <br />Field Parameters <br />Flow <br />Electrical Conductivity cis <br />umhos/cm <br />159 <br />132 <br />209 209 209 <br />8 <br />15 <br />H SU 8.30 8.19 8.00 .15 <br />8.1 . <br />Temperature °C °C 9.5 7.1 15.3 4.6 4.6 <br />°F <br />t °F 49.1 44.8 59.5 40.3 40.3 <br />Tempera <br />ure Retest Retest <br />Comment <br />J <br /> <br />Laboratory Parameters' <br /> <br />ACZ <br /> <br />ACZ <br /> <br />ACZ <br /> <br />ACZ -- <br />Name of Certified Lab L62832-01 L64626-04 L65714-03 L65714-05 <br />Lab Reference # 5/24/2007 8/22/2007 10/16/2007 10/16!2007 <br />Sample Date <br />5/256/12 <br />8/24-9/13 <br />10/17-1117 <br />10117-11/7 <br />Lab Test Dale <br />Sam led B <br />46 <br />99 <br />91 <br />86 <br />Alkalinit Total CaCO3 m /I 0 <br />08 B 0.04 B -0.03 U -0.03 U <br />Aluminum dissolved m /I . <br />0 <br />9 2.0 2.1 2.0 <br />Anions me /I . <br />Arsenic, dissolved m /I <br />0005 <br />-0 <br />U <br />0.0007 <br />B <br />-0.0005 <br />U <br />-0.0005 <br />U <br />Arsenic total m /I <br />m /I 41 138 78 . <br />46 94 86 81 <br />Bicarbonate -0 <br />01 U 0.02 B 0.03 B 0.03 B <br />Boron dissolved m /I . <br />-0 <br />005 U -0.005 U -0.005 U -0.005 U <br />Cadmium dissolved m /I . <br />14 <br />7 27.1 21.3 21-7 <br />Calcium dissolved m !I . <br />-211 U 5 B 5 B B <br />Carbonate m /I 10 <br />0 4.8 2.3 4.8 <br />Cation - Anion Balance % . <br />1 <br />1 2.2 2.2 2.2 <br />Cations me /I . <br />1 <br />U <br />2 <br />B <br />3 <br />B <br />3 <br />B <br />Chloride m /I 1.6 8 3.8 - <br />01 <br />-0 U -0.01 U -0.05 U -0.01 U <br />Chromium, total m /I . <br />106 208 200 199 <br />Conductivity umhos/cm 01 <br />-0 U -0.01 U -0.01 U -0.01 U <br />Copper, dissolved m !I . <br />005 <br />-0 U -0.005 U H -0.005 U -0.005 U <br />C aped, total m /I <br />m /l <br />3 109 <br />39 <br />68.7 . <br />47 <br />86 <br />69 <br />70 <br />Hardness . -2 U -2 U -2 U -2 U <br />Hydroxide m /I <br />m /I 0.126 0.065 0.07 0.03 B 0.03 B 0.03 B <br />Iron, dissolved m /I 0.09 3.8 0.92 1.06 0.94 0.4 0.38 <br />Iron, total 0002 <br />0 B -0.0001 U -0.0002 U 0.0004 B <br />Lead dissolved m /I . <br />Lead total m /I <br />2 <br />5 <br />4.5 <br />3.8 <br />3.7 <br />Magnesium, dissolved m /I 05 <br />0 01 <br />0 . <br />-0.005 U -0.005 U 05 <br />- U .005 <br />-0 U <br />Manganese. dissolved m /I . <br />000002 . <br />022 <br />0 <br />B <br />0.033 -0. <br />03 <br />-0. U 0.014 B <br />Mananese total <br />g m /I . <br />0002 <br />-0 U -0.0002 U -0.0002 U -0.0002 U <br />Mercury, total m /I . <br />01 <br />-0 <br />U <br />0.01 <br />U <br />-0 .01 <br />U <br />0.01 <br />U <br />Molybdenum, dissolved m /I . <br />05 <br />-0 U -0.01 U -0.01 U -0.01 U <br />Nickel dissolved m /I . <br />07 <br />0 B 0.02 B 0.31 -0.02 U <br />Nitrate as N dissolved m /I . <br />07 <br />0 B 0.03 B H 0.31 -0.02 U <br />Nitrate/Nitrite as N m /I . <br />01 <br />0 U 0.01 B H -0.01 U 0.01 U <br />Nitrite as N dissolved m q/1 . <br />8 <br />0 <br />H <br />4 <br />8 <br />H <br />8.5 <br />H 8 <br />.5 <br />H <br />H lab SU 7 8.8 8.1 . <br />06 <br />0 B . <br />0.09 B 0.06 B 0.06 B <br />Phosphate m /I 2 <br />74 25 <br />0 . <br />0.02 B 0.03 EH 0.02 <br />E B 0.02 B <br />Phosphorus Ortho dissolved m /I . . 6 <br />0 8 1.3 B 1.2 B 0.8 B <br />Potassium dissolved m /I . <br />Selenium, dissolved m /I <br />0001 <br />-0 <br />U <br />0.0002 <br />B <br />o.,O,001 <br />B <br />0.0001 <br />B <br />Selenium total m /1 . <br />00005 U <br />-0 -0.00005 U -0.00005 U -0.00005 U <br />Silver, total m /I . <br />0 <br />27 <br />0451 <br />1.00 <br />0.96 <br />Sodium Absorption Ratio SAR calc. . <br />4 <br />3 <br />10.8 <br />18.9 <br />18.2 <br />Sodium dissolved m g/1 . <br />-10 U -10 U 10 B 10 B <br />Sulfate m /I 4 25 12 1 <br />60 1.03 0.95 0.90 <br />TDS Ratio talc. . <br />5p 107 116 111 <br />TDS Calc. m /l <br />36 180 <br />101 <br />80 <br />110 <br />110 <br />10 <br />TDS m /I <br />36 <br />20 6 B H <br />1a B -5 U,H <br />TSS m /I 6.4 107 01 B -0.01 U -0.01 <br />0 U -0.01 U <br />Zinc, dissolved m /I . <br />' Baseline and WY 2000 data adapted from WWE (2001). <br />2 ACZ Laboratory, Steamboat Springs, CO <br />a Negative values denote readings below lab detection levels <br />° ACZ Lab Qualifiers: U - Analyte was analyzed for but not detected at the indicated MDL <br />H - Holding time exceeded. pH is a field test with an immediate hold time. <br />B - Analyte conc detected at a v alue bet method detection limit (MDL) and practical quantitation <br />West Elk Mine <br />C-2 2007 Annual Hydrology Report <br />HydroGeo, Inc.