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GW_N37 <br />6- J <br />CONTENTS: MONTHLY WATER DEPTHS DATING BACK TO MAY 193, HYDROGRAPH <br />and QUARTERLY TESTING RESULTS <br />MONITORING WELL GW-N37 <br />Zone DAKOTA COAL CORRECTION: RLG 12-20-05 <br />Northing: 600,022.19 <br />Easting: 121,440.64 <br />Elevation: 5,752.03 <br />Well Depth: 14 79 16.4 <br />FIELD PARAMETERS 10-Oct-07 13-Nov-07 12-Dec-07 17-Jan-08 20-Feb-08 20-Mar-08 14-Apr-08 7-May-08 11-Jun-08 21-Jul-08 19-Aug-08 23-Sep-08 <br />Dry Dry Dry Dry Dry Dry <br />pH 4 <br />Water Temperature (deg C) 16.8 <br />Conductivity (umhos/cm) 455 <br />Water Elevation (N) 5,736.11 #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! 5,742.12 5,742.51 5,740.73 5,740.55 <br />LABORATORY PARAMETERS <br />Metals Analysis MDUS Units <br />Aluminum, dissolved (mg/L) 1.22 0.06 mgt <br />Calcium, dissolved (mg/L) 52.6 0.4 mgt <br />Iron, dissolved (mg/L) - .03(B) 0.04 mgt <br />Lead, dissolved (mg/L) 0.0012 2E-04 mgt <br />Magnesium, dissolved (mg/L) 21.5 0.4 mgt <br />Manganese, dissolved (mg/L) .016(8) 0.01 mgt <br />Molybdenum, dissolved (mg/L) U 0.02 m gvL <br />Potassium (mg/L) 1.4(B) 0.6 mpt <br />Selenium, dissolved (mg/L) 0.0019 0.002 mgt <br />Sodium, dissolved (mg/L) 19.4 0.6 mgt <br />Wet Chemistry <br />Bicarbonate as CaC03 (mg/L) U 2 mgt <br />Carbonate as CaC03 (mg/L) U p <br />mgt <br />Hydroxide as CaC03 (mg/L) U 2 g4- <br />Total Alkalinity U 2 mgt <br />Cation-Anion Balance (/) 6.9 x <br />Sum of Anions (meq/L) 4.7 0.1 meg1L <br />Sum of Cations (meq/L) 5.4 0.1 meq/L <br />Chlodde, dissolved (mg/L) 10 1 mgt <br />Conductivity @ 25C (umhos/cm) 552 1 umhos/a <br />Hardness as CaC03 (mg/L) 220 1 mGVL <br />itrate as N (mg/L) <br />t 0.23 0.02 mgt <br />lrale/Nitr!te as N (rng/L) <br />0 .23(H) 0.02 mgt <br />.. <br />itrite as N (mg/L) HU 0.01 mgt <br />Nitrogen, ammonia (mg/L) U 0.05 mgt <br />pH @ 25C 4.3(H) 0.1 <br />Phosphate as P04 (mg/L) .06(B) 0.03 mgt <br />Phosphorus (mg/L) .02(HB) 0.01 mgt <br />Resdue, Filterable @180 (TDS) 410 10 mgt <br />Sodium Absorption Ratio in Water 0.57 0.03 m9L <br />Sulfate, dissolved (mg/L) 210 10 <br />Total Dissolved Solids Q 180C (mglL) 317 10 mgt <br />Total Dissolved Solids, calculated (mg/L) 1.29 <br />f. Negative (-) = less than <br />2. U = not defected at MDL (Minimum Defection Level) <br />3 <br />H- Exceeded lw/d Time <br />. <br />4. B = AnaMe cancentrafion detected at a value bet- MDL and POL <br />Monitoring Well GW-N37 <br />Current Water Year Data <br />• <br />5.744 ______________________ <br />5,743 _________________________________________________________________________________________________________________________________________ <br />5,742 ------------------------------------------------------------ _------------------------------------- <br />5,741 ____________________________________________________________________________________________ <br />------- ------------ <br />Water <br />Elevation 5,740 __________________________________________________________________________________________________ <br />______________________________________ <br />(fry <br />5,739 _______._____________________________________________._ <br />5,738 ---------------------- .---------- -------------------------------- _________________________ <br />_______________________________________ <br />5.737 <br />--------------------------------------- <br />5,736 __________________________________________________________________________________________ <br />5,735 <br />Oct-07 Nov-07 Dec-07 Jan-08 Feb-08 Mar-08 Apr-08 May-08 Jun-08 Jul-08 Aug-08 Sep-01 <br />Month <br />F:\Eng\DATA\excell\waterl2008\2008_ANUHYD