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GW N9 <br />CONTENTS: MONTHLY WATER DEPTHS, HYDROGRAPH <br />and QUARTERLY TESTING RESULTS <br />Monitoring Well GW -N9 <br />Zone Overburden 8 Dakota Coal <br />Northing 607,83400 <br />Easting 1,11488800 <br />Elevation 5,76400 <br />Well Depth 725 <br />Date of Collection 17- Oct -12 14- NOV-12 13- Dec -12 22- Jan-13 18- Feb -13 18- Mar -13 17- Apr -13 30- May -13 19- Jun-13 17- Jul -13 22- Aug -13 12- Sap -13 <br />FIELD PARAMETERS <br />PH 682 700 688 669 <br />Water Temperature (deg C) 133 129 145 159 <br />Conducbmty (umhos/cm) 2,810 3,800 2,610 2,470 <br />Depth 3560 4037 3909 4378 4550 3787 3989 35 17 2730 2912 31 81 2751 <br />Depth (elev) 57284 57236 57249 57202 57185 5726 1 5724 1 57288 57367 573488 57322 5,73649 <br />LABORATORY PARAMETERS <br />Metals Analysis <br />MDUS Units <br />Aluminum, dissolved <br />U <br />U <br />U <br />U <br />006 mgt <br />Calcium, dissolved <br />545 <br />491 <br />605 <br />582 <br />04 mgt. <br />Iran dissolved <br />03 <br />389 <br />023 <br />066 <br />004 mgt <br />Iron, Total Recoverable <br />3 76 <br />152 <br />1 41 <br />098 <br />00001 mgt <br />Lead, dissolved <br />U <br />U <br />U <br />U <br />002 mgt <br />Magnesmm dissolved <br />152 <br />289 <br />125 <br />958 <br />04 mgt <br />Manganese, dissolved <br />089 <br />067 <br />1 05 <br />0 865 <br />0 005 mgt <br />Manganese, Total <br />092 <br />075 <br />1 08 <br />091 <br />0 005 mgt <br />Molybdenum dissolved <br />U <br />U <br />U <br />U <br />002 mgt <br />Pota --, dissolved <br />54 <br />186 <br />4 <br />32 <br />06 mgt <br />Selemum, dissolved <br />U <br />U <br />U <br />U <br />00001 mA <br />Sodium, dissolved <br />348 <br />110 <br />206 <br />101 <br />6 mgt <br />Wet Chemistry <br />Bicarbonate as CaCO3 <br />337 <br />452 <br />298 <br />252 <br />2 m9rt <br />Carbonate as CaCO3 <br />U <br />U <br />U <br />U <br />2 mart <br />Hydroece as CaCO3 <br />U <br />U <br />U <br />U <br />2 mgt <br />Total Alkalinity <br />337 <br />452 <br />298 <br />252 <br />2 mgt <br />Cation -Amon Balance <br />-77 <br />51 <br />-02 <br />25 <br />% <br />Sum of Amons <br />484 <br />487 <br />418 <br />358 <br />01 megl <br />Sum of Cabons <br />41 5 <br />53 9 <br />41 6 <br />376 <br />01 me Wt <br />Chloride <br />17 <br />28 <br />6 <br />3(B) <br />1 rrA <br />Conductivity @25C <br />2500 <br />3570 <br />2840 <br />2780 <br />1 umhos/crr <br />Hardness as CaCO3 <br />1990 <br />2420 <br />2030 <br />1850 <br />1 mgt <br />Nitrate as N, dissolved <br />HU <br />HU <br />U <br />U <br />002 m94 <br />Nitrate /Nitrite as N, desolve <br />HU <br />HU <br />U <br />U <br />002 mgt <br />Nitrite as N, dissolved <br />HU <br />HU <br />U <br />U <br />001 mgt <br />Nitrogen, ammonia <br />035(B) <br />14 <br />018(B) <br />014(B) <br />005 mA <br />PH (lab) <br />7 8(H) <br />7 8(H) <br />7 8(H) <br />7 7(H) <br />01 <br />Phosphate <br />U <br />U <br />U <br />003(B) <br />003 mgrt <br />Phosphorus, ortho dissolved <br />HU <br />HU <br />U <br />001(B) <br />001 mgL <br />Residue, Ftllerable (TDS) @180 <br />3120 <br />3500 <br />2780 <br />2650 <br />10 mA <br />Sodium Absorption Rsbo in Wet <br />034 <br />099 <br />02 <br />0 10(B) <br />003 mgt <br />Sulfate <br />1960 <br />1850 <br />1700 <br />1460 <br />10 mgt <br />TDS (calculated) <br />2920 <br />3060 <br />2640 <br />2310 <br />10 mWL <br />TDS (ratio - measured/cakulal <br />107 <br />1 14 <br />1 05 <br />1 15 <br />1 Ne.— r- )`Mas- <br />2 U• not sawoeE at MDL(M —m Dal— Lever) <br />3 H- Exceede0 as — <br />1 6 = Anelve --sa— 4Nx4e4 ete velre Defween MDL elW FQL <br />Monitoring Well GW -N9 <br />Current Water Year Data <br />5,738 <br />5,736 <br />5,734 <br />5,732 <br />l <br />5,730 - - - - - - <br />wasr <br />Ea am <br />(ft) 51728 - — <br />5,726 - - — - - <br />5,724 <br />5,722 <br />5,720 <br />5,718 <br />Oct -12 Nov -12 Dec -12 Jan -13 Feb -13 Mar -13 Apr -13 May -13 Jun -13 Jul -13 Aug -13 Sep -13 <br />Month <br />E \Waste Water EMSORMS \New HorimmNH2 PermNlnnual Hydrology Reporl\2013_ANUHYD <br />