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Lower North Fork <br />Surtace Water duality and Field Parameters <br />C <br />• <br />• <br />C-2 <br />Mountain Coal West Elk Mine <br />Monitorin Location N. Fork Lower Baseline 2005 Water Year <br />De9Cf1 lion Units Minimum Maximum Mean 5/2/2005 6/5/2005 9/12/2005 <br />Field Parameters <br />Flow cfs <br />Elecldcal COnduMivi umh09/Cm 223 139 169 <br />H SU 7.53 7.68 6.96 <br />Tem erature °C °C <br />Tem erature °F °F a.a 51.7 5s7 <br />Comment <br />Laborato Parameters' <br />Name of Certifetl Lab ACZ <br /> <br />Lab Reference # L53206-04 <br />Sam le Dale 9/[2/2005 <br />Lab Test Date sna-ton <br />Sam led B SL <br />Alkalinit otal CaCO3 m /I 93 <br />Aluminum, dissolved m A o.04 <br />Anions me !I 1.9 <br />Arsenic, dissolved m /l <br />ArSenlG, IOIa! m 1 -D.OODS <br />BiwrbOnate m /I 41 138 76 90 <br />Boron, dissolved m !I O.o2 <br />Cadmium, dissolved m /l -o.oos <br />Calcium, dissolved m /I z5.9 <br />Carbonate m ll 3 <br />Cation -Anion Balance °h s.o <br />Cations me /I 2.t <br />Chloride m /I 1.6 B 3.6 2 <br />Chromium, total m fl -0.01 <br />Co0dUChVit UmhOS/Cm 169 <br />Co er, dissolved m /l -o.ot <br />C snide, total m ll -0.01 <br />Hardness m /I 39.3 109 68.7 62 <br />H droxide m /I -z <br />Iron, dissolved m /I o.t2s o.oss o.as <br />Iron, total m /I D.o9 3.6 0.92 2.30 <br />Lead, dissolvetl m /l 0.0003 <br />Lead, total m 0 <br />Ma nesium, dissolved m /1 4.2 <br />Man anese, dissolved m 0 o.ooD2 D.os o.ot 0.009 <br />Man anese, total m /1 0.057 <br />Mercu ,total m /I -O.OOO2 <br />Mol bdenum, dissolved m !I -0.01 <br />Nickel, dissolved m /I -0.01 <br />Nitrate as N ,dissolved m II -D.o2 <br />Nitrate/Nitrite as N m !I -0.02 <br />Nitrite as N ,dissolvetl m /l -001 <br />H lab SU 7 s.8 6.1 e.4 <br />Phos hate m A 0.12 <br />Phos horns Orlho ,dissolved m /I 2.7a o.25 o.oa <br />Potassium, dissolved m /I t.t <br />Selenium, dissolved m /I <br />Selenium, total m /I -0.001 <br />Silver, total m /I -O.oD0o5 <br />Sodium Ahso tion Ratio SAR talc. 0.52 <br />Sodium, dissolved m /I 1o.e <br />Sulfate m /I a 25 12 -10 <br />TDS Ratio talc. 1.09 <br />TDS Calc. m ll lot <br />TDS m 4 36 160 101 110 <br />TSS m 11 6.4 107 36 56 <br />Zinc, dissolved mg/I -0.01 <br />'Baseline, VJY 2000, antl WY 2001 data ads led f rom W WE. <br />ACZ -ACZ Laboratories, Inc., Steamboat S rin s, CO <br />Ne alive values denote readin s below lab detection levels <br />NM -Not Measuretl <br /> <br />West Elk Mine <br />2005 Annual Hytlrology Report HydroGeo, Inc. <br />