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Final Technical Report, 2014 Monitoring Well Rehabilitation Program Bowie Mine 23 <br />Table 4. Water Quality Data Summary for Well BRL- IP- 14 -67 -D -BLW <br />Well ID: BRL- IP- 14 -67 -D -BLW <br />Sample Collection Date <br />BRL- IP -00- <br />67 -D -BLW <br />11/21/2006 <br />BRL- IP -14- <br />67 -D -BLW <br />10/20/2014 <br />Analytical Laboratory <br />Accutest <br />Laboratories <br />Laboratory Sample ID <br />Baseline <br />D63664 -2 <br />FIELD PARAMETERS <br />Units <br />Min <br />Ave <br />Max <br />Static Water Level <br />Feet <br />56.7 <br />174.54 <br />236.77 <br />147.32 <br />295.28 <br />Water Elevation <br />Feet <br />6,213.7 <br />6,276.0 <br />6,393.8 <br />6,303.18 <br />Field Comment <br />H <br />S.U. <br />7.8 <br />9.18 <br />11.62 <br />8.9 <br />7.85 <br />Conductivity <br />mhos /cm <br />1,065 <br />1 3,417.3 <br />5,030 <br />3,600 <br />5,510 <br />Temperature <br />Celsius <br />11.1 <br />1 14.8 <br />27.9 <br />12.7 <br />1 19.6 <br />LAB PARAMETERS <br />Bicarbonate <br />m <br />210 <br />1,656 <br />2,451 <br />1,932 <br />3,510 <br />Carbonate <br />mgAL <br /><MDL <br />133.96 <br />658 <br />170.9 <br /><5.0 <br />Chloride <br />m <br /><MDL <br />284.82 <br />1230 <br />11.26 <br />271 <br />Conductivity <br />mhos /cm <br />1,394 <br />3,080.5 <br />5,240 <br />3,050 <br />3,930 <br />Hardness <br />m <br />1.85 <br />29.502 <br />55.18 <br />21.31 <br />55.1 <br />Acidity <br />Nitrate - Nitrite <br />m /L <br /><MDL <br />0.9881 <br />3.05 <br />1.78 <br />Nitrogen - Nitrate <br />m <br /><0.050 <br />Nitrogen - Nitrite <br />m <br /><0.020 <br />Ammonia <br />m /L <br /><MDL <br />4.2322 <br />22.9 <br />1.91 <br />1.1 <br />H <br />su <br />7.73 <br />8.67 <br />11.58 <br />8.92 <br />7.92 <br />Phosphate <br />m <br /><MDL <br />0.7732 <br />3.24 <br />0.07 <br />Phosphorus Total <br />m <br />0.16 <br />ResidueFilterable -TDS <br />m /L <br />913 <br />2,144.5 <br />2890 <br />2,186 <br />1,760 <br />Sulfate <br />m <br />3.09 <br />38.624 <br />203.7 <br />5.76 <br />10.4 <br />Arsenic (Dissolved )2 <br />m <br /><MDL <br />0.1068 <br />0.78 <br />0.043 <br /><0.025 <br />Cadmium (Dissolved )2 <br />m <br /><MDL <br />0.016 <br />0.05 <br />0.05 <br /><0.010 <br />Calcium (Dissolved )2 <br />m /L <br />0.659 <br />6.5411 <br />14.4 <br />4.74 <br />15.6 <br />Iron (Dissolved )2 <br />m /L <br /><MDL <br />0.3294 <br />1.6 <br />0.1 <br />0.0358 <br />Iron (Total )2 <br />m <br />0.03 <br />0.772 <br />1.92 <br />0.03 <br />0.595 <br />Magnesium (Dissolved )2 <br />m <br />0.052 <br />2.8495 <br />11.2 <br />2.3 <br />3.92 <br />Manganese (Dissolved )2 <br />m <br /><MDL <br />0.0203 <br />0.04 <br /><MDL <br />0.0899 <br />Manganese (Total )2 <br />m <br /><MDL <br />0.0371 <br />0.077 <br /><MDL <br />0.104 <br />Mercury (Dissolved )2 <br />m <br /><MDL <br />0.00513 <br />0.05500 <br />0.000027 <br /><0.0001 <br />Selenium (Dissolved )2 <br />m /L <br /><MDL <br />0.0522 <br />1 0.155 <br />0.098 <br /><0.050 <br />Sodium (Dissolved )2 <br />m <br />454 <br />850.93 <br />1250 <br />942 <br />1,350 <br />Zinc (Dissolved )2 <br />m <br />0.011 <br />0.0528 <br />0.12 <br />0.04 <br />0.0826 <br />Adapted from Bowie (2014b ). <br />1 Note on baseline data: The area of concern for monitoring point DH -67blw has not been affected by the mining operation. <br />Therefore, all recorded monitoring events are considered baseline (Bowie, 2014b). Numerous issues with compromised casing <br />and slime when attempting to collect water quality samples from 2007 through 2013 were noted in database (Bowie, 2014b). <br />2 Note: Designated values for samples collected October 20, 2014 were converted from pg/L to mg/L for comparison to baseline <br />and historical data. <br />November 2014 HpdroGeo, Inc. <br />