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Bear Coal Company - Bear No. 3 Mine <br />v <br />HYDROLOGY MONITORING DATA - 2009 <br />STATION: Outflow 001 <br />Field Date - First Quarter <br />Parameters 1/5/09 1/12109 1/19/09 1/26/09 2/2/09 2/10/09 2/16109 2/24/09 3/2/09 03/09/09 03/16/09 03/24/09 03/31109 Min Max Ave <br />Flow TP-m 8.0 8.2 7.6 9.4 9.7 9.9 8.1 8.5 7.7 8.1 7.8 8.1 8.5 7.6 9.9 8.4 <br />H units 8.0 7.9 8.0 8.1 8.0 7.9 7.9 8.0 7.9 8.3 8.5 8.2 8.1 7.9 8.5 8.1 <br />Conductivity 25°C umhos/cm 4300 4100 4000 3900 3800 3700 3600 3700 3600 3800 3900 4300 4200 3600 430D 3915 <br />Temperature °C 3.1 4.3 4.7 4.1 4.3 5.7 4.3 5.2 6.7 7.0 7.4 7.5 7.2 3.1 7.5 5.5 <br />Lab <br />Parameters <br />Wet Chemist <br />Residue, Filterable DS 180 C m /I 3150 2820 3110 2820 3150 3027 <br />Residue, Non-Filterable TSS 103-5C m", I 0 12 11 0 12 8 <br />Metal Analysis <br />Iron, total recoverable m /I 1.3 0.95 1.2 0.950 1.30 .1.150 <br />Field Date - S econd Quart er <br />Parameters 04/07/09 04/13/09 04/20/09 04/28/09 05/05/09 05/11/09 05119/09 05/27/09 06/02/09 06/08/09 06/17/09 06/23/09 06/29/09 Min Max Ave <br />Flow m 7.9 8.4 7.8 7.8 8.3 7.7 8.5 8.2 8.2 7.2 7.1. 7.4 7.1 7.1 8.5 7.9 <br />H units 7.9 8.1 8.1 8.2 8.1 8.0 8.0 8.2 8.4 8.1 8.2 8.3 8.4 7.9 8.4 8.2 <br />Conductivity 25°C umhos/cm 4000 4100 4000 4400 4400 4500 4800 5000 4800 4800 4700 4800 5000 4000 5000 4562 <br />Temperature °C 8.6 9.8 10.8 11.9 12.2 14.6 15.6 15.6 16.2 16.0 15.9 16.8 18.1 8.6 18.1 14.0 <br />Lab <br />Parameters <br />Wet Chemist <br />Residue Filterable DS 180 C m /I 3050 3490 36601 1 3050 3660 3400 <br />Residue, Non-Filterable TSS 103-5C m A 8 9 U 8 9 9 <br />Metal Analysis <br />Iron, total recoverable m /I 1.0 0.89 0.65 0.65 1.85 <br />Field Date - Third Quarte r <br />Parameters 07/06/09 07/13/09 07/20/09 07/28/09 08/03/09 08/11/09 08/17/09 [__08/24/09 08/31/09 09/08/09 09/14/09 09/21/09 09/28/09 Min Max Ave <br />Flow m 7.1 6.7 7.3 7.2 7 59 5.9 6.3 6.6 6.6 8.2 7.1 6.2 5.9 8.2 6.8 <br />H units 8.5 8.5 8.5 8.5 817 .! 8 8.6 8.5 8.8 8.9 8.6 8.8 8.7 6.5 8.9 8.6 <br />Conductivi 25°C umhos/cm 4900 5000 5100 5200 5000 4900 5100 5100 5000 5100 5000 5100 49001 1 4900 5200 5031 <br />Temperature °C 18.2 18.0 18.5 18.5 19.1 17.9 16.9 17.2 17.3 17.2 16.4 13.7 12.91 1 12.9 19.1 17.1 <br />Lab <br />Parameters <br />Wet Chemist <br />Residue, Filterable TDS 180 C M ,/j 3810 3870 39001 1 3810 3900 3860 <br />Residue Non-Filterable TSS 103.5C m" I U U 51 1 5.0 5.0 5.0 <br />Metal Analysis <br />Iron, total recoverable m /I 0.6 0.5 0.431 1 0.43 0.60 0.51 <br />Field Date - Fourth Quarter <br />Parameters 10/06/09 10/12/09 10/19/09 10126109 11/02/09 11/09109 11/16/09 11/22109 11/30/09 12/07/09 12/16/09 12/22/09 12128/09 Min Max Ave <br />Flow m 7.0 7.0 6.9 7.0 6.9 6.8 7.0 13.2 6.5 6.2 1.9 1.3 0.9 0.9 13.2 6.0 <br />H units 8.8 8.7 8.6 8.5 8.3 8.5 8.7 8.4 8.6 8.5 8.4 8.7 8.7 8.3 8.8 8.6 <br />Conductivity 25°C umhos/cm 4900 4800 4700 4600 4400 4400 4500 4400 4400 4400 4300 4400 4400 4300 4900 4508 <br />Temperature °C 9.5 9.4 10.3 8.0 6.1 6.3 5.6 3.8 4.8 3.7 3.1 2.2 2.0 2.0 10.3 5.8 <br />Lab <br />Parameters <br />Wet Chemist <br />Residue Filterable TDS 180 C m A 3740 3500 3530 3500 3740 3590 <br />Residue Non-Filterable TSS 103-5C m /I U 5 5 5.0 5.0 5.0 <br />Metal Analysis <br />Iron, total recoverable m /I 0.45 0.64 0.61 1 0.45 0.64 0.56