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Colowyo Coal Company <br />Exhibit 2A <br />2017Annual <br />Reclamation and <br />Hydrology Report <br />Water Quality Data <br />1992-2017 <br />New <br />Upper Good Spring <br />Creek <br />COLOWYO MINE <br />NUGSC <br />(NUGSC) <br />Listing of Stream Lab Data <br />Flow <br />Field <br />Field <br />Field <br />Lab <br />Lab <br />TDS <br />NO3 <br />NO2 <br />NO3+NO2 <br />NH3 Total <br />Bicarb <br />No datum <br />=> 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 N <br />as N P <br />as HCO3 <br />Sulfate <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 mgA <br />mgA <br />mgA <br />mg/I <br />mgA <br />mgA <br />mgA <br />mgA <br />mgA <br />mgA <br />mgA <br />mgA <br />mg/I <br />Statistics <br />Mean <br />297 <br />825 <br />794 <br />148415 <br />817 <br />149820 <br />113237 <br />4855 <br />357 <br />007 <br />366 <br />017 008 <br />41219 <br />49825 <br />000 <br />12607 <br />077 <br />010 <br />12228 <br />005 <br />000 <br />001 <br />4724 <br />004 <br />Std. Dev. <br />326 <br />033 <br />494 <br />39029 <br />025 <br />27884 <br />23244 <br />10429 <br />125 <br />004 <br />132 <br />055 Oil <br />7013 <br />14329 <br />000 <br />1895 <br />155 <br />009 <br />2906 <br />006 <br />000 <br />000 <br />1563 <br />003 <br />Coef. Var. <br />Range <br />1994 <br />25 <br />225 <br />3023 <br />11 <br />2842 <br />1250 <br />992 <br />54 <br />009 <br />632 <br />405 0 855 <br />433 <br />760 <br />00046 <br />1656 <br />853 <br />02 <br />2269 <br />0 285 <br />0 001 <br />0 035 <br />121 1 <br />019 <br />Max <br />2000 <br />940 <br />2260 <br />365000 <br />860 <br />360000 <br />161000 <br />99400 <br />640 <br />010 <br />690 <br />410 086 <br />64800 <br />93000 <br />0 005 <br />16900 <br />854 <br />020 <br />22800 <br />029 <br />00010 <br />004 <br />13800 <br />020 <br />Min <br />006 <br />690 <br />010 <br />62700 <br />750 <br />75800 <br />36000 <br />200 <br />100 <br />001 <br />058 <br />005 001 <br />21500 <br />17000 <br />00004 <br />340 <br />001 <br />000 <br />110 <br />001 <br />00000 <br />0 001 <br />1690 <br />001 <br />Max at <br />4/27/1998 <br />11/18/1997 <br />7/8/2002 <br />3/6/1998 <br />4/27/1998 <br />3/6/1998 <br />8/6/2001 <br />5/27/1993 <br />11/1/2004 <br />11/5/2001 <br />11/18/1994 <br />513/2011 1/1/1999 <br />2/23/2010 <br />7/8/2002 <br />11/1/2004 <br />8/2/2002 <br />5/17/1999 <br />5!72001 <br />8/2/2002 <br />5/17/1999 <br />5!7/2001 <br />7/31/2000 <br />11/10/2008 <br />10/2/2000 <br />Min at <br />7/302013 <br />2/112002 <br />12/18/1996 <br />4/82002 <br />10242002 <br />527/1993 <br />5/82002 <br />9/30/1994 <br />520/1997 <br />10242002 <br />427/1998 <br />10242002 9/11/1997 <br />10/8/1998 <br />520/1997 <br />5/82002 <br />6/1/1993 <br />2/112002 <br />6282002 <br />427/1998 <br />3/142002 <br />6/1/1990 <br />520/1997 <br />427/1998 <br />10/242002 <br /># Of Samples <br />218 <br />190 <br />224 <br />222 <br />226 <br />226 <br />103 <br />221 <br />87 <br />87 <br />111 <br />100 103 <br />111 <br />119 <br />119 <br />172 <br />122 <br />119 <br />172 <br />117 <br />111 <br />111 <br />111 <br />111 <br />Station <br />Date <br />NUGSC <br />8/8/1996 <br />075 <br />859 <br />9 <br />1403 <br />83 <br />1423 <br />24 <br />028 <br />NUGSC <br />924/1996 <br />145 <br />88 <br />62 <br />1135 <br />NUGSC <br />926/1996 <br />81 <br />1556 <br />20 <br />45 <br />001 <br />45 <br />374 <br />570 <br />0 001 <br />115 <br />006 <br />002 <br />131 <br />001 <br />00002 <br />0 012 <br />508 <br />002 <br />NUGSC <br />10/3/1996 <br />120 <br />784 <br />12 <br />81 <br />1554 <br />20 <br />394 <br />001 <br />394 <br />356 <br />510 <br />0 001 <br />115 <br />031 <br />002 <br />126 <br />0 026 <br />00002 <br />0 013 <br />504 <br />002 <br />NUGSC <br />11/19/1996 <br />121 <br />86 <br />35 <br />1112 <br />84 <br />1424 <br />5 <br />391 <br />001 <br />392 <br />390 <br />550 <br />0 001 <br />128 <br />012 <br />004 <br />131 <br />00002 <br />0 014 <br />537 <br />003 <br />NUGSC <br />12/18/1996 <br />085 <br />83 <br />01 <br />1512 <br />79 <br />1613 <br />5 <br />42 <br />001 <br />42 <br />427 <br />580 <br />0 001 <br />128 <br />004 <br />004 <br />121 <br />0 012 <br />00002 <br />0 014 <br />456 <br />001 <br />NUGSC <br />1/19/1997 <br />1 51 <br />84 <br />05 <br />809 <br />82 <br />1456 <br />5 <br />337 <br />001 <br />337 <br />377 <br />480 <br />0 001 <br />136 <br />004 <br />004 <br />126 <br />0 012 <br />00002 <br />0 012 <br />517 <br />003 <br />NUGSC <br />226/1997 <br />143 <br />85 <br />21 <br />1070 <br />83 <br />1371 <br />18 <br />4 <br />001 <br />401 <br />364 <br />450 <br />0 001 <br />121 <br />Oil <br />004 <br />108 <br />0 017 <br />00002 <br />001 <br />454 <br />004 <br />NUGSC <br />3/19/1997 <br />1 86 <br />85 <br />42 <br />1066 <br />83 <br />1257 <br />10 <br />232 <br />001 <br />232 <br />0 005 <br />377 <br />450 <br />0 001 <br />121 <br />009 <br />0 04 <br />103 <br />0 032 <br />00002 <br />0 011 <br />395 <br />001 <br />NUGSC <br />4/21/1997 <br />228 <br />85 <br />37 <br />869 <br />83 <br />943 <br />170 <br />149 <br />001 <br />149 <br />0 035 <br />325 <br />260 <br />0 001 <br />101 <br />28 <br />004 <br />701 <br />0 141 <br />00002 <br />0 006 <br />262 <br />003 <br />NUGSC <br />520/1997 <br />11 38 <br />85 <br />11 5 <br />684 <br />83 <br />810 <br />372 <br />1 32 <br />001 <br />132 <br />283 <br />170 <br />0 002 <br />901 <br />467 <br />004 <br />597 <br />0 215 <br />00002 <br />0 004 <br />172 <br />004 <br />NUGSC <br />626/1997 <br />570 <br />82 <br />199 <br />1189 <br />81 <br />1240 <br />100 <br />392 <br />001 <br />393 <br />0 171 <br />366 <br />400 <br />0 001 <br />122 <br />166 <br />002 <br />102 <br />0 099 <br />00002 <br />0 012 <br />299 <br />005 <br />NUGSC <br />7/9/1997 <br />291 <br />83 <br />189 <br />1244 <br />84 <br />1320 <br />30 <br />478 <br />001 <br />478 <br />0 055 <br />396 <br />410 <br />0 001 <br />127 <br />062 <br />004 <br />109 <br />0 044 <br />00002 <br />0 013 <br />318 <br />002 <br />NUGSC <br />8/14/1997 <br />270 <br />83 <br />97 <br />1235 <br />82 <br />1400 <br />1050 <br />5 <br />402 <br />001 <br />402 <br />007 0 031 <br />400 <br />440 <br />0 001 <br />119 <br />014 <br />004 <br />109 <br />0 029 <br />00002 <br />0 013 <br />366 <br />003 <br />NUGSC <br />9/11/1997 <br />213 <br />83 <br />148 <br />1103 <br />82 <br />1390 <br />1020 <br />5 <br />348 <br />001 <br />348 <br />006 0 005 <br />354 <br />480 <br />0 001 <br />109 <br />037 <br />004 <br />109 <br />0 029 <br />00002 <br />0 011 <br />44 <br />001 <br />NUGSC <br />10130/1997 <br />053 <br />72 <br />34 <br />1277 <br />82 <br />1250 <br />48 <br />NUGSC <br />11/18/1997 <br />140 <br />94 <br />3 <br />1138 <br />81 <br />1440 <br />1070 <br />5 <br />38 <br />001 <br />38 <br />005 002 <br />413 <br />460 <br />0 001 <br />132 <br />007 <br />004 <br />116 <br />0 022 <br />00002 <br />0 011 <br />414 <br />005 <br />NUGSC <br />12/6/1997 <br />120 <br />83 <br />4 <br />1120 <br />83 <br />1420 <br />5 <br />NUGSC <br />1/6/1998 <br />1 70 <br />82 <br />1440 <br />82 <br />1430 <br />1050 <br />5 <br />361 <br />002 <br />361 <br />007 002 <br />403 <br />440 <br /><O 002 <br />119 <br />006 <br />004 <br />114 <br />0 021 <br />00002 <br />0 012 <br />399 <br />001 <br />NUGSC <br />2/19/1998 <br />1 50 <br />8 <br />26 <br />1540 <br />81 <br />1530 <br />5 <br />NUGSC <br />3/6/1998 <br />1 70 <br />74 <br />3650 <br />75 <br />3600 <br />8 <br />NUGSC <br />4/9/1998 <br />1250 <br />83 <br />1190 <br />83 <br />1180 <br />82 <br />NUGSC <br />427/1998 <br />2000 <br />66 <br />945 <br />85 <br />850 <br />540 <br />48 <br />058 <br />005 009 <br />276 <br />173 <br />0 005 <br />953 <br />006 <br />002 <br />554 <br />007 <br />0 001 <br />0 007 <br />169 <br />001 <br />NUGSC <br />6/11/1998 <br />600 <br />84 <br />89 <br />638 <br />82 <br />1230 <br />55 <br />NUGSC <br />7/6/1998 <br />270 <br />85 <br />22 <br />1450 <br />84 <br />1370 <br />36 <br />NUGSC <br />8/3/1998 <br />260 <br />86 <br />14 <br />1750 <br />82 <br />1550 <br />1270 <br />54 <br />416 <br />005 005 <br />416 <br />574 <br />0 005 <br />127 <br />1 05 <br />002 <br />112 <br />002 <br />0 001 <br />0 012 <br />601 <br />001 <br />NUGSC <br />9/10/1998 <br />035 <br />84 <br />142 <br />1697 <br />8 <br />1460 <br />11 <br />NUGSC <br />10/8/1998 <br />230 <br />85 <br />12 <br />1809 <br />83 <br />1500 <br />1310 <br />12 <br />287 <br />005 005 <br />215 <br />569 <br />0 005 <br />150 <br />02 <br />002 <br />124 <br />002 <br />0 001 <br />0 014 <br />441 <br />001 <br />NUGSC <br />11/5/1998 <br />032 <br />92 <br />105 <br />1721 <br />79 <br />1630 <br />5 <br />NUGSC <br />12/14/1998 <br />035 <br />82 <br />83 <br />3367 <br />77 <br />1750 <br />126 <br />NUGSC <br />1/7/1999 <br />86 <br />34 <br />1981 <br />82 <br />1650 <br />1300 <br />14 <br />355 <br />005 056 <br />407 <br />557 <br />0 005 <br />143 <br />056 <br />002 <br />117 <br />0 001 <br />0 011 <br />571 <br />001 <br />NUGSC <br />222/1999 <br />1 50 <br />87 <br />4 <br />1729 <br />8 <br />1640 <br />11 <br />NUGSC <br />313/1999 <br />026 <br />86 <br />55 <br />1950 <br />79 <br />1650 <br />7 <br />NUGSC <br />4/6/1999 <br />230 <br />81 <br />1768 <br />79 <br />1640 <br />5 <br />NUGSC <br />5/17/1999 <br />1300 <br />841 <br />57 <br />751 <br />82 <br />1060 <br />770 <br />552 <br />272 <br />005 047 <br />321 <br />295 <br />0 005 <br />105 <br />854 <br />002 <br />76 <br />029 <br />0 001 <br />0 008 <br />226 <br />005 <br />NUGSC <br />6/10/1999 <br />560 <br />84 <br />116 <br />1198 <br />8 <br />1130 <br />10 <br />NUGSC <br />7/6/1999 <br />817 <br />827 <br />177 <br />1380 <br />79 <br />1380 <br />1030 <br />21 <br />478 <br />005 01 <br />319 <br />412 <br />0 005 <br />899 <br />03 <br />002 <br />101 <br />002 <br />0 001 <br />0 013 <br />309 <br />001 <br />NUGSC <br />8/19/1999 <br />750 <br />816 <br />106 <br />1587 <br />78 <br />1470 <br />5 <br />NUGSC <br />9/3/1999 <br />247 <br />829 <br />129 <br />1187 <br />79 <br />1540 <br />14 <br />NUGSC <br />10/13/1999 <br />234 <br />798 <br />109 <br />1216 <br />82 <br />1610 <br />1350 <br />5 <br />557 <br />005 008 <br />391 <br />555 <br />0 005 <br />101 <br />009 <br />002 <br />146 <br />002 <br />0 001 <br />0 016 <br />521 <br />001 <br />NUGSC <br />11/11/1999 <br />239 <br />81 <br />26 <br />983 <br />79 <br />1690 <br />5 <br />NUGSC <br />12/6/1999 <br />393 <br />8 121 <br />2 <br />968 <br />79 <br />1520 <br />7 <br />NUGSC <br />1172000 <br />492 <br />823 <br />08 <br />806 <br />76 <br />1360 <br />5 <br />NUGSC <br />2172000 <br />291 <br />818 <br />37 <br />1013 <br />77 <br />1550 <br />1280 <br />5 <br />455 <br />005 005 <br />363 <br />541 <br />0 005 <br />992 <br />005 <br />002 <br />128 <br />002 <br />0 001 <br />0 017 <br />465 <br />001 <br />NUGSC <br />3172000 <br />421 <br />822 <br />41 <br />924 <br />77 <br />1460 <br />16 <br />NUGSC <br />4/172000 <br />461 <br />838 <br />106 <br />1013 <br />78 <br />1280 <br />1010 <br />36 <br />276 <br />005 013 <br />333 <br />385 <br />0 005 <br />935 <br />085 <br />002 <br />106 <br />002 <br />0 001 <br />0 009 <br />196 <br />001 <br />NUGSC <br />