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Well 1.11-01 <br />Water Quality and Field Parameters <br />• <br />,I 11 <br />u <br />• <br />Mountain Coal West Elk Mine <br />Monitoring Location Wall 1-11.01 aaselina 2003 Water Vear <br />DESClI Lion Uni[s Minimum Mazimum Mean 10/25/02 4/14/2003 6/5/2003 9/29/2003 <br />Field Parameters <br />Water Level De Ih <br />Electrical Conductivi <br />H feet <br />umhOS/cm <br />SU 305.4 <br />3920 <br />7.8 309.7 <br />6610 <br />10.8 307.3 <br />5640 <br />9.7 305.43 <br />6390 <br />10.77 306.9 <br />6610 <br />10.67 309.69 <br />3920 <br />7.75 <br />Tem erature oC 60.0 68.5 63.6 60 62.2 68.5 <br />Comment <br />Laborato Parameters <br />Name of Certifietl Lab ACZ ACz <br />Lab Reference # L39100-01 L43179-01 <br />Sam a Date 10/25102 9/29/2003 <br />Lab Test Date 1028-11/15 10/2-1029 <br />Sam led 8 <br />Alkalini Total CaC03 <br />Aluminum, dissolved <br />m /I <br />m n <br />7880 <br />1970 <br />1925 GV <br />7880 <br />1970.000 <br />Ammonia m /I O.Ot 0.01 0.01 0.01 <br />Anlons me /I 43.5 56.6 50.1 56.6 43.5 <br />Arsenic, dissolved m 11 -0.001 0.001 0.000 -0.001 O 0006 <br />Arsenic, total m /I <br />Bicarbonate m /I 522 1940 1231 522 1940 <br />Boron, dissolved m /I 249 249 2.49 249 <br />Cadmium, dissolved m /I -0.0700 -0.0100 -0.0700 -0.01 -0.07 <br />Calcium, dissolved m 4 2 14 8 2.7 14.3 <br />Carbonate m /I 26 1360 693 1360 26 <br />Cation-Anion Balance % -6.9 -0.8 -3.9 -6.9 -0.8 <br />Cations me /I 42.8 49.3 46.1 49.3 42.8 <br />Chloride m /I 151 640 396 640 151 <br />Conductivit umhos/cm 3530 5740 4635 5740 3530 <br />Co er, dissolved m 11 <br />Hardness m A 5 a9 27 5 49 <br />H drOxide m /I -2 -2 -2 -2 -2 <br />Iron, dissolved m /I 0.03 0.16 0.10 0.03 0.16 <br />Iron, total m 0 0.16 4.49 2.33 0.76 4.49 <br />Lead, dissolved m /I -0080 -0.080 -0.080 -0.OB -0.OB <br />Ma nesium, dissolved m /I -0.4 3.1 1.4 -0.4 3.7 <br />Man anese, dissolved m /l -0.01 0.02 0.01 -0.01 0.02 <br />Man anese, total <br />Mercu ,total <br />Mol enum, dissolved m A <br />m /I <br />m /I -0.010 <br />-0.00020 0.090 <br />-0.00020 0.040 <br />-0.00020 -0.117 <br />-0.0002 0.09 <br />-0.0002 <br />Nitrate/Nitrite as N m /I -0.02 0.73 0.06 -0.02 0.73 <br />Ni1r0 en, ammonia m /I 7.25 3.84 2.55 3.84 1.25 <br />H SU 8.2 9.5 8.9 9.5 8.2 <br />Phos hate m /I 0.15 0.21 0.78 0.15 0.21 <br />Phos horns Ortho ,dissolved m /I 0.050 0.070 0.060 0.05 0.07 <br />Potassium, dissolved m /I 13 234 123 234 12.6 <br />Selenium, dissolved m /I -0001 -0.001 -0.001 -0.001 0.001 <br />Selenium, total m /I <br />Sodium Absor lion Ratio SAR talc. 59.4 787.0 123.2 187 59.4 <br />Sodium, dissolved m /I 940 972 956 972 940 <br />Sulfate m /I -10 50 20 50 -10 <br />TDS Ratio talc. 1 1 t 1 07 <br />TDS Calc. m 11 2310 2310 2310 2310 <br />TDS m /I 2470 3300 2885 3300 2470 <br />TSS m /I <br />Zinc, dissolved m /I 0.67 7.73 1.20 0.67 1.73 <br /> <br />ACZ -ACZ Labs, Steamboat S rin s, Colorado <br />' Standard is for reference ur oses onl <br />NA - not a licable NM -not measured NR -not re orted <br /> <br />West Elk Mine <br />G-19 2003 Annual Hydrology Report HydroGeo, Inc- <br />