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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 />Easting: ,121,440 64 <br />Elevation: 5,752.03 <br />Well Depth 44x9 16.4 <br />FIELD PARAMETERS 14 -Oct -16 16 -Nov -16 29 -Dec -16 31 -Jan -17 28 -Feb -17 14 -Mar -17 27 -Apr -17 31 -May -17 26 -Jun -17 25 -Jul -17 30 -Aug -17 14 -Sep -17 <br />pH Dry Dry Dry Dry Dry 482 4.55 <br />Water Temperature (deg C) 13.5 16.8 <br />Conductivity (umhos/cm) 605 394 <br />Depth to water (ft) 12.75 Dry Dry Dry Dry Dry 1635 960 10.30 9.93 10.92 11.61 <br />Water Elevation (ft) 5,739 28 #VALUE' #VALUE! #VALUE) #VALUE' #VALUE! 5,73568 5,74243 5,741.73 5,74210 5,741 11 5,74042 <br />LABORATORY PARAMETERS <br />Metals Analysis <br />Aluminum, dissolved <br />Calcium, dissolved <br />Iron, dissolved <br />Iron, Total Recoverable <br />Lead, dissolved <br />Magnesium, dissolved <br />Manganese, dissolved <br />Manganese, Total <br />Molybdenum, dissolved <br />Potassium, dissolved <br />Selenium, dissolved <br />Sodium, dissolved <br />Wet Chemistry <br />Bicarbonate as CaCO3 (mg/L) <br />Carbonate as CaCO3 (mg/L) <br />Hydroxide as CaCO3 (mg/L) <br />Total Alkalinity <br />Cation -Anion Balance (%) <br />Sum of Anions (meq/L) <br />Sum of Cations (meq/L) <br />Chloride, dissolved (mg/L) <br />Conductivity @ 25C (umhos/cm) <br />Hardness as CaCO3 (mg/L) <br />Nitrate as N (mg/L) <br />Nitrate/Nitrite as N (mg/L) <br />Nitnte as N (mg/L) <br />Nitrogen, ammonia (mg/L) <br />pH @ 25C <br />Phosphate as PO4 (mg/L) <br />Phosphorus (mg/L) <br />Resdue, Filterable @180 (TDS) <br />Sodium Absorption Ratio in Water <br />Sulfate, dissolved (mg/L) <br />Total Dissolved Solids @ 180C (mg/L) <br />Total Dissolved Solids, calculated (mg/L) <br />1 Negahve () =less then <br />2 U =not detected at MDL (Mrmmum Detschon Level) <br />3 H - Exceeded hold hme <br />4 B = Analyte concenlrabon detected at a value between MDL end PQL <br />M \EMS\New Horizon 2\Environmental\2.0 CDRMS\2.6 AHR & ARR\2017\NHR\2017 NH2 AHR <br />MDUS Units <br />0.06 mg& <br />1.19 <br />0.64 <br />0.4 mgA <br />52.9 <br />306 <br />0.04 mgt <br />0.04(B) <br />0.12 <br />1E-04 mgiL <br />0.49 <br />0.11 <br />0.02 mglL <br />00011 <br />0.001 <br />0.4 mg/L <br />226 <br />119 <br />0.005 mg1L <br />0.031 <br />0.018(B) <br />0.005 mgtL <br />0 031 <br />0.016(B) <br />0.02 mgt. <br />U <br />U <br />0.6 mglL <br />21 <br />1.7 <br />IE -04 mg1L <br />00021 <br />0.0016 <br />6 mg1L <br />21 7 <br />189 <br />2 mglL <br />U <br />3.0(B) <br />2 mg/L <br />U <br />U <br />2 mg/L <br />U <br />U <br />2 mg1L <br />U <br />3(B) <br />% <br />47 <br />00 <br />0.1 meq/L <br />51 <br />35 <br />0.1 meq& <br />56 <br />3.5 <br />1 mglL <br />265 <br />8.3 <br />1 umhosla <br />582 <br />390 <br />1 mg/L <br />225 <br />125 <br />0.02 xA <br />0 95(H) <br />0.16(H) <br />0.02 nxA <br />0 96(H) <br />0.16(H) <br />0.01 mq& <br />0.01(BH) <br />UH <br />0.05 mg1L <br />U <br />U <br />01 <br />4.8(H) <br />5 6(H) <br />0.03 mryL <br />0.06(B) <br />U <br />0.01 mglL <br />0 02(BH) <br />UH <br />10 mg1L <br />438 <br />318 <br />0.03 mg/L <br />0.64 <br />0.74 <br />10 mglL <br />206 <br />151 <br />10 mg& <br />337 <br />226 <br />1.3 <br />141 <br />M \EMS\New Horizon 2\Environmental\2.0 CDRMS\2.6 AHR & ARR\2017\NHR\2017 NH2 AHR <br />