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C010 -yo Coal Company <br />Exhibit lA <br />2018 Annual Reclamation and Hydrology Report <br />Water Quality Data <br />1983-2018 <br />Lower Taylor Creek <br />COLOWYO MINE <br />(LTC) <br />LTC <br />Listing of Stream Lab Data <br />Flow <br />Field <br />Field <br />Field <br />Lab <br />Lab <br />TDS <br />NO3+NO2 <br />NH3 <br />Bicarb <br />No datum => Blank <br />Rate <br />pH <br />Temp <br />Conduct <br />pH <br />Conduct <br />-180 <br />TSS <br />as N <br />as N <br />as HCO3 <br />Sulfate <br />P <br />As <br />Ca <br />Fe <br />Pb <br />Mg <br />Mn <br />Hg <br />Se <br />Na <br />Zn <br />CIS <br />S U <br />deg C <br />umho/cm <br />S U <br />umho/cm <br />mgA <br />mgA <br />mgA <br />mgA <br />mgA <br />mgA <br />mgA <br />mg/1 <br />mg/I <br />mgA <br />mgA <br />mgA <br />mgA <br />mgA <br />mg/1 <br />mg/I <br />mgA <br />Statistics <br />Mean <br />036 <br />835 <br />951 <br />186036 <br />816 <br />176383 <br />141109 <br />28982 <br />126 <br />009 <br />38000 <br />67406 <br />274 <br />000 <br />9514 <br />383 <br />008 <br />12382 <br />028 <br />000 <br />001 <br />17771 <br />006 <br />Std. Dev. <br />080 <br />031 <br />642 <br />69356 <br />030 <br />61489 <br />59211 <br />96320 <br />1 36 <br />006 <br />14746 <br />33866 <br />2108 <br />000 <br />2576 <br />1603 <br />008 <br />4152 <br />105 <br />000 <br />000 <br />15027 <br />012 <br />Coef. Var. <br />Range <br />63 <br />19 <br />251 <br />35172 <br />17 <br />3480 <br />2766 <br />6938 <br />499 <br />036 <br />658 <br />1591 <br />184 995 <br />0 027 <br />1332 <br />131 99 <br />028 <br />230 <br />7 845 <br />00009 <br />0 015 <br />589 <br />0 795 <br />Max <br />63 <br />93 <br />25 <br />3740 <br />87 <br />3680 <br />2910 <br />6940 <br />5 <br />038 <br />725 <br />1610 <br />185 <br />0 028 <br />159 <br />132 <br />03 <br />238 <br />785 <br />0 001 <br />0 016 <br />595 <br />08 <br />Min <br />0 <br />74 <br />-01 <br />2228 <br />7 <br />200 <br />144 <br />2 <br />001 <br />002 <br />67 <br />19 <br />0 005 <br />0 001 <br />258 <br />001 <br />002 <br />8 <br />0 005 <br />00001 <br />0 001 <br />6 <br />0 005 <br />Max at <br />429/1986 <br />8/12/1983 <br />6/18/1987 <br />11/102011 <br />9/132016 <br />11/302017 <br />11/102011 <br />228/1990 <br />5212013 <br />2/52001 <br />11/102011 <br />11/102011 <br />3/31/1988 <br />3/1/1998 <br />11/102011 <br />228/1990 <br />228/1990 <br />10/12/1988 <br />3/1/1988 <br />2/52001 <br />8/13/1984 <br />9/192017 <br />228/1990 <br />Min at <br />12/132002 <br />628/1985 <br />11/11/1999 <br />5/19/1997 <br />222/1989 <br />228/1990 <br />228/1990 <br />3/30/1989 <br />2172000 <br />10/5/1989 <br />3/52001 <br />228/1990 <br />9/11/1997 <br />1/6/1998 <br />2/52001 <br />9/13/1995 <br />4/172000 <br />228/1990 <br />7/1/1996 <br />6/1/1993 <br />10%3/1996 <br />228/1990 <br />628/1985 <br /># Of Samples <br />229 <br />114 <br />120 <br />112 <br />154 <br />154 <br />81 <br />154 <br />69 <br />70 <br />77 <br />77 <br />77 <br />77 <br />79 <br />81 <br />78 <br />75 <br />76 <br />77 <br />77 <br />77 <br />77 <br />Station Date <br />LTC 1122009 <br />0 <br />LTC 2232010 <br />0 <br />LTC 5/52010 <br />0 <br />LTC 8/32010 <br />0 <br />LTC 11/42010 <br />0 <br />LTC 3212011 <br />0 <br />LTC 5/32011 <br />0 <br />LTC 8/172011 <br />0 <br />LTC 11/10/2011 <br />019 <br />864 <br />18 <br />3730 <br />83 <br />3610 <br />2910 <br />8 <br />17 <br />01 <br />725 <br />1610 <br />005 <br />0 003 <br />159 <br />019 <br />02 <br />186 <br />003 <br />0 001 <br />0 005 <br />483 <br />005 <br />LTC 3/132012 <br />120 <br />849 <br />39 <br />1020 <br />82 <br />2000 <br />1440 <br />120 <br />21 <br />02 <br />520 <br />683 <br />014 <br />0 003 <br />143 <br />272 <br />02 <br />105 <br />017 <br />0 001 <br />0 005 <br />213 <br />005 <br />LTC 5/142012 <br />014 <br />854 <br />24 <br />2770 <br />86 <br />2460 <br />2180 <br />13 <br />03 <br />01 <br />636 <br />966 <br />005 <br />0 003 <br />111 <br />033 <br />02 <br />164 <br />003 <br />0 001 <br />0 005 <br />404 <br />005 <br />LTC 822012 <br />0 <br />LTC 10/312012 <br />002 <br />861 <br />15 <br />3030 <br />86 <br />2840 <br />2330 <br />5 <br />02 <br />01 <br />519 <br />1180 <br />005 <br />0 003 <br />111 <br />007 <br />02 <br />173 <br />003 <br />0 001 <br />0 005 <br />398 <br />005 <br />LTC 3212013 <br />004 <br />856 <br />19 <br />2480 <br />86 <br />2370 <br />1860 <br />11 <br />05 <br />01 <br />578 <br />881 <br />005 <br />0 003 <br />123 <br />028 <br />02 <br />128 <br />007 <br />0 001 <br />0 005 <br />282 <br />005 <br />LTC 5212013 <br />024 <br />861 <br />101 <br />2340 <br />85 <br />2110 <br />1800 <br />22 <br />50 <br />01 <br />466 <br />856 <br />005 <br />0 003 <br />119 <br />046 <br />02 <br />125 <br />003 <br />0 001 <br />0 005 <br />232 <br />005 <br />LTC 7/302013 <br />0 <br />LTC 11/182013 <br />0 <br />LTC 3/192014 <br />004 <br />860 <br />12 <br />2840 <br />85 <br />2910 <br />2120 <br />9 <br />08 <br />01 <br />568 <br />1110 <br />005 <br />0 003 <br />120 <br />021 <br />02 <br />152 <br />003 <br />0 001 <br />0 005 <br />344 <br />005 <br />LTC 5202014 <br />005 <br />852 <br />83 <br />2530 <br />85 <br />2270 <br />1900 <br />23 <br />07 <br />01 <br />506 <br />989 <br />005 <br />0 003 <br />119 <br />069 <br />02 <br />140 <br />003 <br />0 001 <br />0 005 <br />262 <br />005 <br />LTC 8282014 <br />028 <br />854 <br />144 <br />2170 <br />85 <br />2110 <br />1460 <br />124 <br />03 <br />01 <br />424 <br />646 <br />018 <br />0 003 <br />74 <br />266 <br />02 <br />84 <br />007 <br />0 001 <br />0 005 <br />286 <br />005 <br />LTC 11/6/2014 <br />004 <br />846 <br />21 <br />2850 <br />84 <br />2590 <br />2070 <br />12 <br />11 <br />01 <br />582 <br />1060 <br />005 <br />0 003 <br />113 <br />015 <br />02 <br />155 <br />003 <br />0 001 <br />0 005 <br />313 <br />005 <br />LTC 1/14/2015 <br />037 <br />826 <br />18 <br />3210 <br />85 <br />3070 <br />2280 <br />10 <br />10 <br />01 <br />701 <br />1140 <br />005 <br />0 003 <br />117 <br />012 <br />02 <br />136 <br />003 <br />0 001 <br />0 005 <br />401 <br />005 <br />LTC 4/3/2015 <br />032 <br />827 <br />37 <br />3120 <br />86 <br />2870 <br />2240 <br />18 <br />03 <br />01 <br />584 <br />1110 <br />01 <br />0 005 <br />87 <br />005 <br />002 <br />148 <br />002 <br />0 001 <br />0 005 <br />379 <br />001 <br />LTC 8/42015 <br />0 <br />LTC 10212015 <br />0 <br />LTC 2252016 <br />008 <br />831 <br />26 <br />2910 <br />85 <br />2380 <br />1910 <br />31 <br />10 <br />01 <br />629 <br />907 <br />007 <br />0 003 <br />123 <br />086 <br />02 <br />133 <br />0 04 <br />0 001 <br />0 005 <br />331 <br />005 <br />LTC 4272016 <br />032 <br />831 <br />62 <br />2480 <br />86 <br />2310 <br />1880 <br />7 <br />04 <br />02 <br />478 <br />896 <br />005 <br />0 003 <br />105 <br />019 <br />02 <br />136 <br />003 <br />0 001 <br />0 005 <br />284 <br />005 <br />LTC 9/132016 <br />003 <br />865 <br />114 <br />3360 <br />87 <br />3220 <br />2650 <br />19 <br />01 <br />01 <br />590 <br />1320 <br />050 <br />0 003 <br />86 <br />033 <br />02 <br />168 <br />003 <br />0 001 <br />0 005 <br />535 <br />005 <br />LTC 11222016 <br />006 <br />807 <br />41 <br />2940 <br />86 <br />2900 <br />2080 <br />298 <br />06 <br />01 <br />481 <br />875 <br />040 <br />0 004 <br />74 <br />744 <br />02 <br />119 <br />022 <br />0 001 <br />0 005 <br />460 <br />005 <br />LTC 3/162017 <br />023 <br />811 <br />66 <br />2780 <br />86 <br />2720 <br />2010 <br />22 <br />05 <br />01 <br />581 <br />1040 <br />005 <br />0 003 <br />109 <br />030 <br />02 <br />130 <br />003 <br />0 001 <br />0 005 <br />359 <br />005 <br />LTC 5232017 <br />1 86 <br />875 <br />79 <br />3110 <br />85 <br />2990 <br />2220 <br />25 <br />06 <br />01 <br />569 <br />1140 <br />005 <br />0 003 <br />89 <br />039 <br />02 <br />141 <br />003 <br />0 001 <br />0 005 <br />443 <br />005 <br />LTC 9/192017 <br />058 <br />862 <br />108 <br />3520 <br />87 <br />3680 <br />2750 <br />17 <br />02 <br />01 <br />617 <br />1480 <br />005 <br />0 003 <br />74 <br />025 <br />02 <br />148 <br />003 <br />0 001 <br />0 005 <br />595 <br />005 <br />LTC 11/30/2017 <br />028 <br />848 <br />16 <br />3740 <br />86 <br />3680 <br />2840 <br />6 <br />09 <br />01 <br />679 <br />1480 <br />005 <br />0 003 <br />88 <br />014 <br />02 <br />147 <br />003 <br />0 001 <br />0 005 <br />566 <br />005 <br />LTC 3/142018 <br />039 <br />848 <br />35 <br />3180 <br />86 <br />3190 <br />2410 <br />7 <br />04 <br />01 <br />633 <br />1150 <br />005 <br />0 003 <br />107 <br />019 <br />02 <br />133 <br />0 06 <br />0 001 <br />0 005 <br />533 <br />005 <br />LTC 5112018 <br />161 <br />838 <br />64 <br />3060 <br />87 <br />3160 <br />2420 <br />29 <br />02 <br />01 <br />547 <br />1210 <br />005 <br />0 005 <br />86 <br />05 <br />02 <br />141 <br />003 <br />0 001 <br />0 008 <br />477 <br />005 <br />LTC 8212018 <br />0 <br />LTC 11282018 <br />0 <br />LTC <br />