2008-06-27_REPORT - C1980007 (7)

Home Browse Search

Lower Dry Fork Alluival Well ul/eb.. fl-lia. -4 Pialrl Paramatars f 1 ?J • Mountain Coal West Elk Mine Monitoring Location: Lower Dry Fork Alluvial Well Baseline' 2007 Water Year Description Units Minimum Maximum Mean 4/27/2007 5/25/2007 8/23/2007 Q Field Parameters Water Level Depth feet 4.19 7.90 6.27 3.5 4.7 6.3 Electrical Conductivity µmhos/cm 575 693 626 549 562 530 H S U 6.6 7.1 6.9 7.73 7.27 7.20 Temperature OF 43.5 61.6 50.6 46.6 48.7 56.8 Temperature °C 8.1 9.3 13.8 Comment Laboratory Parameters 3 Name of Certified Lab 2 ACZ Lab Reference # L64613-04 Sample Date 8/23/2007 Lab Test Date 8/24-9/13 Sampled B Alkalinity (Total CaCO3) mg/I 260 300 272 259 Aluminum, dissolved m /I Ammonia m /I -0.05 U Anions me /I 5.8 5.8 5.8 5.6 Arsenic, dissolved m /I -0.0005 0.0004 0.0003 0.0032 Arsenic, total m q/1 Bicarbonate m /I 260 300 272 259 Boron, dissolved m /I 0.03 B Cadmium, dissolved m /I -0.005 -0.005 -0.005 -0.005 U Calcium, dissolved m /I 38.5 62.6 53.4 53.1 Carbonate m /l -2 -2 -2 -2 U Cation - Anion Balance % 0.9 3.3 1.7 1.8 Cations me /I 5.9 6.2 6.0 5.8 Chloride m /I -1 3 2 2 B Conductivity µmhos/cm 459 497 482 514 Copper, dissolved m /I Hardness m /I 186 208 200 191 Hydroxide m /I -2 -2 -2 -2 U Iron, dissolved m /I -0.01 0.83 0.15 0.23 Iron, total m /I 0.08 0.51 0.26 1.15 Lead, dissolved m /I -0.04 -0.04 -0.04 0.0006 Magnesium, dissolved m /I 10.2 16.0 13.8 14.2 Manganese, dissolved m /I -0.01 1.96 0.37 0.954 Manganese, total m /I 1.13 2.48 1.72 1.030 Mercury, dissolved m /I -0.0002 0.0014 0.0002 -0.0002 U Mercury, total m /I Molybdenum, dissolved m /I Nitrate as N dissoloved m /I 0.02 B Nitrate/Nitrite as N m /I -0.02 0.71 0.13 0.02 B Nitrite as N dissoloved m /I -0.01 U Nitrogen, ammonia H m /I SU -0.05 7.8 0.09 8.0 0.044 7.9 -0.05 8.1 U --t- Phosphate m /I -0.030 0.030 0.02 0.06 B Phosphorus Ortho , dissolved m /I -0.05 0.01 0.01 0.02 B Potassium, dissolved Selenium, dissolved m /I m /I 2.0 -0.0010 3.1 0.0001 2.5 0.0003 1.8 -0.0001 B U Selenium, total m /l Sodium Absorption Ratio SAR calc. 1.18 1.45 1.32 1.39 Sodium, dissolved m /I 35 46 41 43.8 Sulfate m /I 20 20 20 20 B TDS Ratio calc. 0.96 TDS Calc. m q/1 292 TDS m /I 250 310 297 280 TSS m /I L Zinc, dissolved mg/I -0.01 0.03 0.02 0.03 ::: : B Baseline 2004 2 ACZ Labs, Steamboat Springs, Colorado 3 Negative values denote readings below lab detection levels "Average (mean) value calc using 1/2 of detection limit for readings below lab detection limit unless all rea 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 quantitation limit (PQL). West Elk Mine G-8 2007 Annual Hydrology Report HydroGeo, Inc.