2009-01-09_REPORT - C1981033 (2)

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Bear Coal Company - Bear No. 3 Mine HYDROLOGY MONITORING DATA - 2008 STATION: Outflow 001 Field Parameters Flow m 1/4/08 5.5 Date - 1/9/08 1/14/08 1/22/08 1/28108 215/08 2/13108 2119/08 5.5 5.6 5.4 6.1 6.2 6.2 6.1 First Quarter 227/08 03103108 03/11108 03/18/08 03125/08 3/3172008 Min Max Ave 6.8 6.0 6.0 6.0 5.3 6.3 5.3 6.8 5.9 H units 8.8 8.7 87 8.8 8.7 8.6 8.8 8.6 8.8 8.6 8.6 8.6 8.6 8.6 8.6 8.8 8.7 Conductivity 25°C umhos/cm 4100 4000 3900 3900 3900 3800 3900 3900 3800 3600 3300 3300 3300 3700 3300 4100 3746 Temperature °C 4.8 4.5 4.3 4.4 3.8 6.2 2.9 3.7 6.8 5.7 4.4 4.8 7.1 7.6 2.9 7.1 4.9 Lab Parameters Wet Chemistry Residue, Filterable TDS 180 C m A 1 -4- 226301 1 2844 22701 1 2270 2844 2581 Residue, Non-Filterable (TSS) (ED 103-5C m A 30 101 1 11 10 30 17 Metal Analysis Iron, total recoverable mg/I 2.152 1.98 1 45 , don 9 , S , aa, Field Date - S econd Quar ter Parameters 04/08/08 04/14/08 04/21/08 0429/08 05/05/08 05/12/08 05/19108 0527/08 06102108 06/09/08 06/16/08 0623/08 06130/08 Min Max Ave Flow m 7.0 6.7 8.8 9.7 10.0 10.5 9.7 8.7 8.2 7.7 7.5 7.5 7.5 6.7 10.5 8.4 H units 808 8.8 8.8 8.5 8.5 8.5 8.5 8.7 8.8 8.3 8.3 8.5 8.8 8.3 8.8 8.6 Conductivity 25°C umhos/cm 3800 4100 4100 4700 4800 4800 4900 5100 5200 5400 5300 5500 5500 3800 5500 4862 Temperature °C 8.7 10.3 10.8 9.8 10.3 11.9 14.5 13.1 15.1 14.5 15.0 16.3 16.9 8.7 16.9 12.9 Lab Parameters Wet Chemistry Residue, Filterable TDS 180 C m 2890 2943 4303 2890 4303 3379 Residue Non-Filterable (TSS) (ED 103-50 m /I 141 1 9.5 15 10 15 13 Metal Analysis Iron, total recoverable m /I 1.26 1.33 0.9 non , zv , ,a Field Parameters Flow m 07/07/08 7.0 Date -Third Quarter 07/14/08 0721/08 07/28108 08/04108 08/11/08 08118/08 0825/08 09102/08 09108/08 09/15/08 0923108 0929/08 Min Max Ave 6.9 6.3 6.9 6.4 6.7 6.7 6.6 7.1 6.5 7,1 7.1 6.7 6.3 7.1 6.8 H units 8.5 8.5 8.7 8.5 8.6 8.5 8.8 8.4 8.5 8.3 8.2 87 8.4 8.2 i 8.8 8.5 F Conductivity 25°C umhos/cm 5500 5400 5400 5400 5400 5400 5300 5200 5100 5200 5200 5000 5000 1 5000 550O 5269 Temperature °C 17.2 17.6 18.6 18.9 19.1 20.0 18.2 18.0 17.8 15.4 14.1 14.0 13.7 13.7 20.0 17.1 Lab Parameters Wet Chemistry Residue Filterable TDS 180 C m /I 4312 38451 1 3217 3217 4312 3791 Residue Non-Filterable TSS 103-5C m /I 24 30 22 22.0 30,0 11 25.3 Metal Analysis Iron, total recoverable m /I 0.83 1.17 0.86 0.83 1.17 0.95 Field Date - Fourth Quarter Parameters 10/1/2008 10/7/2008 10/13/06 10/20/08 10127108 11/03/08 11/10/08 11/17/08 11/25/08 12/01/08 12/07/08 12115/08 12/24/08 12/30/08 Min Max Ave Flow m 6.8 7.1 7.3 7.5 7.5 7.6 8.0 8.1 8.3 8.6 7.8 7.7 7.6 8.0 6.8 8.6 7.7 H units 8.4 8.2 8.1 8.4 8.2 8.3 8.1 8.1 8.1 8.1 8.1 8.0 7.9 7.8 7.8 8.4 8.2 Conductivi 25°C umhos/cm 5000 4900 4800 4800 4500 4600 4500 4400 4500 4400 4400 4400 4400 4400 4400 5000 4585 Temperature °C 11.9 12.2 9.7 8.8 7.2 7.4 6.2 3.7 5.7 4.4 4.5 4.3 3.6 3.2 3.2 12.2 6.9 Lab Parameters Wet Chemistry 10/31/08 Residue, Filterable TDS 180 C m 3634 3574 3388 3388 3634 3532 Residue, Non-Filterable TSS 103-5C m II 57 0 15 26 0.0 57.0 24.5 Metal Analysis Iron, total recoverable M q/1 0.51 0.78 0.71 n s, n -a n a, Page 7