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CONTENTS: MONTHLY WATER DEPTHS, HYDROGRAPH <br /> and QUARTERLY TESTING RESULTS <br />Monitoring Well GW-N9 <br />Zone Overburden 8 Dakota Coal <br />Northing: 607,834.00 <br />Ea sting: 1,114, 888.00 <br /> 5,764.00 <br />Dept <br />Well <br />Well Depth: <br />72.5 <br />GW N9 <br />Date of Collection 29-0c1-08 19-Nov-08 12-Dec-08 14-Jan-09 18-Feb-09 25-Mar-09 15-Apr-09 12-May-09 11-Jun-09 14-Jul-09 12-Aug-09 22-Sep-09 <br />FIELD PARAMETERS <br />PH <br />Water Temperature (deg C) 6.81 <br />14 <br />60 6.75 <br />6.68 <br />g 92 <br /> <br />Conductivity (umips/cm) . <br />3 <br />080 14.50 <br />1 <br />.60 15.80 <br />Depth <br />Depth <br />38.67 , <br /> <br />41.55 48.86 3,390 <br /> <br />43.70 46.15 1,9 <br />,925 <br />44 <br />92 39 <br />45 32 <br />00 <br />1,796 <br /> <br />Depth (elev) 5725.3 <br /> <br />5722.5 5715.1 <br /> <br />5720.3 5717 <br />9 . <br />. <br />. <br />5719 <br />1 5724 <br />6 32.05 35.86 26.92 31.37 <br />LABORATORY PARAMETERS . . <br />. <br />5732.0 5732.0 5,728.14 5737.1 5,732.63 <br />Meta/.Analysis <br />Aluminum, dissolved U MDL'S Units <br />Calcium, dissolved 496 U .13(8) U 0.06 mqL <br />Iron, dissolved 0.33 539 <br />3 <br />54 547 543 0.4 mryL <br />Lead, dissolvad u . <br />U 0.42 0.33 0,04 mWL <br />Magnesium, dissolved 181 <br />289 U U 00001 mqt <br />Manganese, tlissohed 0.91 121 121 0.4 m92 <br />Molybdenum, dissolved U 1.3 <br />.05(B) 0.18 1.15 0.005 mast <br />Potassium, dissolved 0. <br />7 <br />13 <br />9 U .01(B) 02 ?,L <br />0 <br />Selenium, dissolved U . <br />U 3.9 3.8 0 6 ', <br />Sodium, dissolved 497 <br />69 <br />1 U U 0.0001 ZI <br /> <br /> <br />Wet Che sCy . 11.8 <br />12.4 <br />6 myt <br />Bicarbonate as CaC03 <br />346 <br />Carbonate as CaC03 330 269 274 2 moM1 <br />-- Hydmrdde as CaC03 U U U U 2 most <br />Total Alkalinty 346 U U U 2 myL <br />Cation-Anion Balance -3.3 330 269 274 2 myL <br />-- Sum or Anions 451 3 -1.4 0.08 % <br />Sum of Cations 42.2 51 <br />2 38'1 37.1 <br />m L <br />Of ew <br />Chloride 15 54.4 <br />19 38 <br />37.8 0.1 mewL <br />Conductivity @25C 2950 35 4(B) <br />4(B) 1 <br /> <br />Hardness as CaC03 <br />1980 10 262 <br />fi2 <br />2590 . <br />f uhos2n <br />Nitrate as N, dissolved U 2540 1860 1850 / m <br />Nitmte/Ndrite as N, dissolve HU L1 <br />U U <br />08 <br />(B) 0 02 mnt <br />Nitrite as N, dissolved HU <br />.01(B) HU .08(HB) 0.02 mA <br />Nitrogen, ammonia 08 0 <br />89 HU <br />HU <br />0.01 mgt. <br />PH (tab) 7.6(H) . <br />8 <br />1 <br />(H) .16(8) .1(8) 0.05 moo <br />Phosphate U . 7.7(H) 7.7(H) 0.1 <br />osp PIt honk, ortho dissolved HU .03(B) U U 003 mwt <br />Residue, Filterable (TDS)@180 3200 01(B) HU UH 0 <br />01 my1 <br />Sodium Absorption Ratio in Wat 0.46 3620 2770 2730 . <br />10 mq <br />L <br />Sulfate 1800 0.6 <br />2100 .1 .12(8) 0.03 mq1 <br />TDS (calculated) 2760 <br />3230 1600 600 1500 10 -L <br /> <br />TDS (ratio -measured/calculat <br />1.16 <br />2450 <br />2350 <br />10 <br />-1 <br /> 1.12 1.13 <br />1.16 <br />1. Neaefire (-)=leaa then <br />2. U = nd dcfeded el M0L (Minimum Dafediar Level) <br />3. H- Erceeded hdd tuna <br />4. S =A-A. co rontreflm defected at a ve/,e behvean MDL end POL <br />Monitoring Well GW-N9 <br />Current Water Year Data <br />5.738 <br />5.736 <br />5.734 <br />5,732 <br />5.730 <br />5.728 <br />Elevation 5,726 <br />(rt) <br />5.724 ___________ ___________________________________________________________________ <br />__ ________________________________________________________________________ <br />5.722 ___________________ _________________________________________________________ <br />_____________________________________________________________________________ <br />5.720 ___________________ <br />__________ <br />5.718 <br />5.716 _ _ <br />5,714 <br />Oct-08 Nov-OB Dec-08 Jan-09 Feb-09 Mar-09 Apr-09 May-09 Jun-09 Jul-09 Au9-09 Sep-09 <br />Month <br />F:1Eng1DATA1ex lAwater1200912009 ANUHYD,4,