Laserfiche WebLink
Colowyo Coal Company <br />2014 Annual Reclamation and Hydrology Report <br />Sodium 128.00 95.12 477 483 6 11 /10 /11 02/28/90 <br />Flow rate 0.36 0.82 6.3 6.3 0 04/29/86 12/13/02 <br />Evaluation of 2014 data for LTC <br />No results from 2014 sampling were minimum or maximum values for any parameters <br />listed above during the monitoring period. Trend line analysis determined no significant <br />correlations over time. <br />UCG: <br />Parameter <br />Mean <br />Std <br />dev <br />Range <br />Max. <br />Min. <br />Max at <br />Min at <br />Lab pH <br />8.53 <br />0.12 <br />0.4 <br />8.7 <br />8.3 <br />08/01/12 <br />03/22/11 <br />Lab Cond. <br />725.40 <br />191.13 <br />660 <br />1140 <br />480 <br />03/18/11 <br />05/19/14 <br />TDS <br />498.67 <br />149.76 <br />530 <br />820 <br />290 <br />03/22/11 <br />05/19/14 <br />Sulfate <br />121.00 <br />83.97 <br />272 <br />273 <br />1 <br />03/22/11 <br />11/08/11 <br />Calcium <br />78.40 <br />19.72 <br />63 <br />118 <br />55 <br />03/22/11 <br />05/19/14 <br />Iron <br />1.39 <br />1.98 <br />6.82 <br />6.85 <br />0.05 <br />05/19/14 <br />08/18/11 <br />Magnesium <br />49.87 <br />18.18 <br />70 <br />97 <br />27 <br />03/22/11 <br />05/19/14 <br />Sodium <br />12.80 <br />3.05 <br />11 <br />18 <br />7 <br />07/31/13 <br />05/19/14 <br />Flow rate <br />0.24 <br />0.37 <br />1.23 <br />1.23 <br />0 <br />05/19/14 <br />03/13/13 <br />Evaluation of 2014 data for UGC <br />Maximum values for iron and flow rate were recorded in 2014. Minimum values for <br />conductivity, TDS, calcium, magnesium, and sodium were recorded in 2014. Trend line <br />analysis determined no significant correlations over time. <br />CJC: <br />Parameter <br />Mean <br />Std <br />dev <br />Range <br />Max. <br />Min. <br />Max at <br />Min at <br />Lab pH <br />8.41 <br />0.10 <br />0.4 <br />8.6 <br />8.2 <br />08/18/11 <br />03/14/12 <br />Lab Cond. <br />1928.75 <br />317.47 <br />1290 <br />2210 <br />920 <br />11/19/13 <br />03/22/11 <br />TDS <br />1520 <br />268.85 <br />1150 <br />1820 <br />670 <br />08/01/12 <br />03/22/11 <br />Sulfate <br />627.69 <br />142.54 <br />569 <br />748 <br />179 <br />08/01/12 <br />03/22/11 <br />Calcium <br />141.81 <br />18.54 <br />76 <br />178 <br />102 <br />08/01/12 <br />03/22/11 <br />Iron <br />0.30 <br />0.38 <br />1.56 <br />1.61 <br />0.05 <br />03/22/11 <br />08/18/11 <br />Magnesium <br />155.69 <br />29.10 <br />125 <br />194 <br />69 <br />08/01/12 <br />03/22/11 <br />Sodium <br />134.50 <br />33.34 <br />140 <br />167 <br />27 <br />08/01/12 <br />03/22/11 <br />Flow rate <br />0.09 <br />0.07 <br />0.2 <br />0.22 <br />0.02 <br />05/15/12 <br />07/31/13 <br />Evaluation of 2014 data for CJC <br />A maximum value for lab pH was recorded in 2014. Trend line analysis determined no <br />significant correlations over time. <br />Page 2 -6 <br />