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GW N8 <br />• <br />CONTENTS: MONTHLY WATER DEPTHS, HYDROGRAPH <br />and QUARTERLY TESTING RESULTS <br />Monitoring Well GWN8 <br />Zone OVERBURDEN 8 DAKOTA COAL <br />Northing: 606,783.00 <br />Easting: 1,112,734.00 <br />Elevation: 5;728.22 5726.67 TDF 3.13.07 <br />Well Depth: 400 94.15ft. 3.13.07 TDF(top 1.62ft. Missing + soil in bottom) <br />Date of Collection 10-Oct-07 7-Nov-07 12-Dec-07 16-Jan-08 <br />FIELD PARAMETERS <br />PH 6.62 <br />Water Temperature (deg C) 13.10 <br />Conductivity (umhos/an) 3,970 <br />Depth 76.13 77.50 77.85 76.83 <br />Depth (elev) 5652.1 5650.7 5650.4 5651.4 <br />LABORATORY PARAMETERS <br />Mefals Analysis <br />Aluminum, dissolved U <br />Calcium, dissolved 493 <br />Iron, dissolved 1.28 <br />Lead, dissolved U <br />Magnesium, dissolved 384 <br />Manganese, dissolved 0.83 <br />Molybdenum, dissolved U <br />Potassium, dissolved 23.9 <br />Selenium, dissolved U <br />Sodium, dissolved 113 <br />Wet Chemistry <br />Bicarbonate as CaC03 355 <br />Carbonate as CaC03 U <br />Hydroxide as CaC03 U <br />Total Alkalinity 355 <br />Cation-Anion Balance -4 <br />Sum of Anions 67.1 <br />Sum of Cations 62 <br />Chloride 44 <br />uctivfty ( <br />25C 4510 <br />. <br />mess as CaC03 2810 <br />e as N, dissolved <br />? ,03(B) <br />ateMitrite as N, dissolve 03( 3H) <br />.altrite as N, dissolved UH <br />Nitrogen, ammonia 2.21 <br />pH (lab) 7.8(H) <br />Phosphate U <br />Phosphorus, ortho dissolved UH <br />Residue, Filterable (TDS) @180 4370 <br />Sodium Absorption Rata in Wat 0.93 <br />Sulfate 2800 <br />TDS (calculated) 4080 <br />TDS (ratio - measured/calculat 1.07 <br />1. N.Wg,.(q: rays Wn <br />2. U: aar dele J of MDL(Mnimam defec6'on Leve% <br />3. H-Exceededlwtdfime <br />4. a =AneMe caricerWagan defected of a veWe 6eeveen MOL and PoL <br />40 5,648 <br />18-Feb-08 20-Mar-08 14-Apr-08 6-May-08 11-Jun-08 21-Jul-08 13-Aug-08 23-Sep-08 <br />6.69 6.60 6.60 <br />13.90 15.50 15.90 <br />4,210 3,890 4,200 <br />79.36 78.92 79.40 78.63 78.02 76.90 76.11 75.56 <br />5648.9 5649.3 5648.8 5649.6 5650.2 5,651.33 5652.1 5,652.67 <br /> MDLS Units <br />U U .3(B) 0.06 ,WL <br />459 492 516 0.4 mgt <br />1.11 0.57 1.6 0.04 mqi <br />U U U 0.0001 mgi <br />408 426 405 0.4 mgvL <br />0.715 0.65 0.77 0.005 mgt <br />U .03(B) U 0.02 mA <br />27 26.1 28 0.6 mgt <br />.0002(8) U U 0.0001 mgt <br />128 129 137 6 mgt <br />373 366 358 2 mgt <br />U U U 2 mgt <br />U U U 2 mgt <br />373 366 358 2 mgt <br />0.2 0.6 2.4 % <br />62.8 65.3 63 0.1 megA <br />63 66.1 66.1 0.1 meq/L <br />48 44 45 1 mgt <br />4210 4250 4540 1 umhos/ar <br />2820 2980 2950 1 mgt <br />U .04(B) 0.15 0.02 mgt. <br />HU .04(HB) .17(H) 0.02 mgt <br />.02(HB) HU .02(HB) 0.01 mgt <br />222 2.1 2.08 0.05 mgt <br />7.6(H) 7.4(H) 7.8(H) 0.1 <br />.06(B) U U 0.03 mgt <br />.02(HB) HU HU 0.01 mgt <br />4300 4220 4390 10 mgi <br />1.06 1.04 1.11 0.03 mg'L <br />2570 2700 2600 10 mgt <br />3870 4040 3950 10 mgt <br />1.11 1.04 1.11 <br />Monitoring Well GW-N8 <br />Current Water Year Data <br />5,654 <br />5,653 <br />5,652 ___________________________________________________________________________________________ <br /> <br />Wafer i <br />Ekvalion 5, 651 _________ ____________________________ <br />(M1) <br />5,850 ____________________________________________________ <br />5.649 ____ _______________ _____ _______________________________________________________________________ <br /> <br />a1-07 Nov-07 Dec-07 1an-01 Feb08 Mar-08 Apr-01 May-08 1-08 1u1-08 Aug-01 Sep-01 <br />Month <br />F:\Eng\DATA\excelhwater\2008\2008_ANUHYD