2008-06-27_REPORT - C1980007 (7)

Home Browse Search

Well 1-11-01 Water Quality and Field Parameters • • Mountain Coal West Elk Mine Monitoring Location Well 1-11-01 Baseline' 2007 Water Year Description Units Minimum Maximum Mean a 4/26/2007 5/23/2007 8/22/2007 Q 5 Field Parameters Water Level Depth feet 259.9 295.4 268.4 387.3 387.3 386.0 Electrical Conductivity gmhos/cm 5010 6820 5880 2610 4140 4320 H SU 9.1 9.7 9.4 7.24 7.53 7.48 Temperature (°C) °C 9.8 20.2 15.6 Temperature (°F) °F 66.8 65.7 64.8 Comment Baseline Period Dec 01 through Nov 02 Laboratory Parameters 3 Name of Certified Lab 2 ACZ Lab Reference # L64626-02 Sample Date 8/22/2007 Lab Test Date 8/27-9/6 Sampled B Alkalinity (Total CaCO3) mg/I 629 1880 1602 Aluminum, dissolved m /I Ammonia m /I 0.79 1.56 1.08 Anions me /I 51.1 56.6 53.7 Arsenic, dissolved m /I -0.005 0.003 -0.001 Arsenic, total m /I Bicarbonate m /I 522 1300 768 Boron, dissolved m /I 1.11 1.25 1.18 Cadmium, dissolved m /I -0.0100 -0.0002 -0.0055 Calcium, dissolved m /I 1 6 3 Carbonate m /I 389 1360 1075 Cation - Anion Balance % -10.4 1.7 -4.6 Cations me /I 43.4 54.0 47.7 Chloride m /I 527 640 603 Conductivity gmhos/cm 4060 5740 5115 4460 Copper, dissolved m /I Hardness m /I 3 32 12 Hydroxide m /I -2 -2 -2 Iron, dissolved m /I -0.05 0.23 0.09 0.12 Iron, total m /I 0.16 0.99 0.57 2.71 Lead, dissolved m /I -0.080 0.081 -0.040 Magnesium, dissolved m /I -0.4 4.1 0.8 Manganese, dissolved m /I -0.01 0.05 0.01 Manganese, total m /I -0.010 0.030 0.003 Mercury, dissolved m /I Mercury, total m /I -0.00020 0.00040 -0.00003 Molybdenum, dissolved m /I Nitrate as N m /I Nitrate/Nitrite as N m /I -0.02 2.78 0.53 Nitrite as N m /I Nitrogen, ammonia m /I 2.21 4.09 3.17 H lab SU 9.4 10.1 9.8 8.4 H Phosphate m /I -0.03 0.16 0.09 Phosphorus Ortho , dissolved m /I 0.009 0.052 0.034 Potassium, dissolved m /I 159 291 217 Selenium, dissolved m /I -0.001 0.002 -0.001 Selenium, total m /I Sodium Absorption Ratio SAR calc. 72.6 212.0 150.5 Sodium, dissolved m /I 816 1080 942 Sulfate m /I 40 50 48 TDS Ratio calc. 1 1 1 TDS Calc. m /I 2900 3430 3165 TDS m /I 2910 3300 3180 2840 TSS m /I 264 Zinc, dissolved mg/I 0.18 8.89 1.78 'Baseline andWY 2004 z ACZ Labs, Steamboat Springs, Colorado 3 Negative values denote readings below lab detection levels 4 Average (mean) value calc using 1/2 of detection limit for readings below lab detection limit unless a 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 - Analyle conc detected at a value bet method detection limit (MDL) and practical quantitation limit (PQL). G -26 West Elk Mine 2007 Annual Hydrology Report HydroGeo, Inc-