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GW_N37 <br />CONTENTS: MONTHLY WATER DEPTHS DATING BACK TO MAY'93, HYDROGRAPH <br />and QUARTERLY TESTING RESULTS <br />MONITORING WELL GW -N37 <br />Zone DAKOTA COAL CORRECTION RLG 12 -20 -05 <br />Northing 600,02219 <br />Eastvg 121440 64 <br />Elevation 5,75203 <br />Well Depth 34-70 164 <br />FIELD PARAMETERS 5- Oct -11 16- Nov -11 12- Dec -11 18-Jar 12 15-Feb -12 14- Mar -12 10- Apr -12 <br />8- May -12 13- Jun-12 12 -Jul-12 <br />23- Aug -12 27- Sep-12 <br />pH Dry Dry Dry Dry Dry Dry <br />Not <br />386 <br />Water Temperature (deg C) <br />Enough to <br />158 <br />Conductivity (umhos /cm) <br />Sample <br />508 <br />Depth to water (ft) 1363 Dry Dry Dry Dry Dry Dry <br />1619 1138 1161 <br />1225 1451 <br />Water Elevation (ft) 5,73840 #VALUE' #VALUE' #VALUE1 #VALUE' #VALUE' #VALUE? <br />5,73584 5,74065 5,74042 <br />5,73978 5,73752 <br />LABORATORY PARAMETERS <br />MDLS Units <br />Metals Analysis <br />006 mqL <br />Aluminum, dissolved <br />1 15 <br />04 mql. <br />Calcium, dissolved <br />44 <br />004 mqL <br />Iron, dissolved <br />003(B) <br />fE -04 mgt <br />ron, Total Recoverable <br />007 <br />002 mgt <br />Lead, dissolved <br />00011 <br />04 mqL <br />Magnesium, dissolved <br />18 <br />0005 mqL <br />Manganese, dissolved <br />0 014(8) <br />0 005 mqL <br />Manganese, Total <br />0014(B) <br />002 mqL <br />Molybdenum, dissolved <br />001(B) <br />06 mqL <br />Potassium, dissolved <br />1 5(B) <br />lE -04 mqL <br />Selenium, dissolved <br />00021 <br />6 mqL <br />Sodium, dissolved <br />16 5 <br />Wet Chemistry <br />2 mqL <br />Bicarbonate as CaCO3 (mg /L) <br />U <br />2 mqL <br />Carbonate as CaCO3 (mg /L) <br />U <br />2 .y,L <br />Hydmmde as CaCO3 (mg /L) <br />U <br />2 mqL <br />Total Alkalinity <br />U <br />% <br />Caboo-Anion Balance ( %) <br />-21 <br />0 1 meq /L <br />Sum of Anions (meq /L) <br />4 8 <br />0 1 meq /L <br />Sum of Cations (meq /L) <br />4 6 <br />1 mqL <br />Chloride, dissolved (mg /L) <br />12 <br />1 umhos4 <br />Conductivity @ 25C (umhos /cm) <br />538 <br />1 mqL <br />Hardness as CaCO3 (mg /L) <br />184 <br />002 mqL <br />Nitrate as N (mg /L) <br />014 <br />002 mqL <br />Nitrate/Nitnte as N (mg /L) <br />014 <br />001 ,g'L <br />Nitrite as N (mg /L) <br />U <br />005 mql. <br />Nitrogen, ammonia (mg /L) <br />U <br />0 1 <br />pH @25C <br />44(H) <br />003 mqL <br />Phosphate as PO4 (mg /L) <br />0 06(B) <br />001 mqL <br />Phosphorus (mg /L) <br />0 02(B) <br />10 mgL <br />Residue, Filterable @180(TDS) <br />390 <br />003 mqL <br />Sodium Absorption Ratio in Water <br />0 54 <br />10 mgL <br />Sulfate, dissolved (mg /L) <br />210 <br />10 mqL <br />Total Dissolved Solids @ 180C (mg /L) 304 <br />Total Dissolved Solids, calculated (mg /L) 1 28 <br />1 N,—( -) =less rha. <br />2 U = nol detected X MDL (Minimum Delecbm level) <br />"t H - Exceeded had time <br />a s= <br />Monitoring Well GW -N37 <br />Current Water Year Data <br />Water <br />Ek�e4on <br />(nl <br />5,745 <br />5,744 <br />5 743 — <br />5,742 — <br />5,741 <br />5,740 <br />5,739 <br />5 738 <br />5,737 <br />5 736 <br />5,735 <br />Oct -11 <br />Nov -11 Dec -11 Jan -12 Feb-12 Mar -12 Apr -12 May -12 Jun -12 Jul -12 Aug -12 Sep -12 <br />Month <br />F \Eng\ DATA \excelkwater\2012\2012_ANUHYD <br />