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GW N9 <br />CONTENTS: MONTHLY WATER DEPTHS, HYDROGRAPH <br />and QUARTERLY TESTING RESULTS <br />Monitoring Well GW -N9 <br />Zone Overburden & Dakota Coal <br />Northing 607,834 00 <br />Easbrg 1,114,888 00 <br />Elevat— 5,76400 <br />Well Depth 725 <br />Date of Collectan 5 -001-11 15 -No,11 12- Dec -11 18 -Jan-12 15- Feb-12 14- Mar -12 10- Apr-12 9- May -12 13 -Jun-12 12 -Jul-12 28- Aug -12 27- Sep-12 <br />FIELD PARAMETERS <br />PH <br />668 <br />691 <br />683 <br />693 <br />Water Temperature (deg C) <br />127 <br />122 <br />13 7 <br />147 <br />- - <br />Conductivity (umhos/cm) <br />3,170 <br />3,670 <br />2,810 <br />2,610 <br />Depth 33 11 <br />3990 4041 4465 <br />4628 <br />4627 41 17 3516 <br />33 75 3396 3402 <br />3435 <br />Depth (el-) 57309 <br />5724 1 57236 57194 <br />57177 <br />57177 57228 57288 <br />57303 5,73004 57300 <br />5,72965 <br />LABORATORY PARAMETERS <br />5,716 <br />0c1-11 Nov -11 Dec -11 Jan -12 Feb-12 Mar -12 Apr -12 May -12 Jun -12 Ju1-12 Aug -12 Sep-12 <br />Month <br />Metals Analyss <br />MDL'S Units <br />Alummum, dissolved <br />U <br />U <br />U <br />U <br />006 mgt <br />Calcium, dwolved <br />581 <br />481 <br />607 <br />577 <br />04 mgt <br />non, dwolved <br />071 <br />043 <br />049 <br />05 <br />004 mgt <br />non, Total Recoverable <br />474 <br />13 <br />0 77 <br />1 53 <br />00001 mgt <br />Lead, dtssobed <br />U <br />U <br />U <br />U <br />002 mgt <br />Magnesium, dissolved <br />226 <br />302 <br />137 <br />99 <br />04 mgt <br />Manganese, dissolved <br />1 3 <br />079 <br />1 21 <br />0 B4 <br />0 005 ­t <br />Manganese, Total <br />131 <br />08 <br />121 <br />085 <br />0005 m0 <br />Molybdenum, dissolved <br />0 03(B) <br />U <br />U <br />0 03(B) <br />002 myt <br />Potassium, dasolved <br />7 2 <br />188 <br />44 <br />34 <br />06 mgt <br />Selensum, dussoh d <br />U <br />U <br />U <br />0 0002(8) <br />00001 mgt <br />Sodium, di solved <br />52 1 <br />113 <br />11 9 <br />103 <br />6 mgt <br />Wet Chemistry <br />Bicarbonate as CaCO3 <br />322 <br />465 <br />297 <br />249 <br />2 mgt <br />Carbonate as CaCO3 <br />U <br />U <br />U <br />U <br />2 mgt <br />Hydroxide as CaCO3 <br />U <br />U <br />U <br />U <br />2 mgt <br />Total Alkalmdy <br />322 <br />465 <br />297 <br />249 <br />2 mgt <br />Cation -Anion Balance <br />37 <br />02 <br />06 <br />-05 <br />% <br />Sum of Anions <br />466 <br />542 <br />41 8 <br />38 <br />Of meq/L <br />Sum of Cations <br />502 <br />544 <br />423 <br />376 <br />0 1 maWL <br />Chloride <br />11 <br />30 <br />4(B) <br />3(B) <br />1 mgt <br />Gonductwlly @25C <br />2890 <br />3470 <br />2610 <br />2570 <br />1 umhos/cn <br />Hardness as CaCO3 <br />2380 <br />2440 <br />2080 <br />1850 <br />/mgt <br />Nitrate as N, dwolved <br />HU <br />HU <br />U <br />0 02(BH) <br />002 mgt <br />N4rate/Nitrite as N, dissolve <br />HU <br />HU <br />U <br />0 02(BH) <br />002 mgt <br />Nitrite as N, dissolved <br />HU <br />HU <br />U <br />HU <br />001 mgt <br />Nitrogen, ammonia <br />0 47(B) <br />1 18 <br />0 15(B) <br />0 12(B) <br />005 mg4- <br />pH (lab) <br />7 B(H) <br />7 6(H) <br />7 9(H) <br />7 8(H) <br />01 <br />Phosphate <br />0 06(B) <br />U <br />U <br />0 06(B) <br />003 mgt <br />Phosphors, ortho dissolved <br />0 02(BH) <br />HU <br />U <br />0 02(BH) <br />001 mgt <br />Residue, Filterable (TDS) @180 <br />3190 <br />3690 <br />2760 <br />2590 <br />10 mgt <br />Sodium Absorption Ratio in Wet <br />047 <br />1 01 <br />0 12(B) <br />0 11(B) <br />003 mgt <br />Sulfate <br />1900 <br />2100 <br />1700 <br />1570 <br />10 mgt <br />TDS(calculaled) <br />2970 <br />3330 <br />2640 <br />2410 <br />10 mgt <br />TDS (rata - measured /calculat <br />1 07 <br />1 11 <br />1 05 <br />1 07 <br />1 1eg-0 =1ss Man <br />2 U= natdete datMDL IM,n,m.m Derecuon Levell <br />3 H- Exceeded hold Gme <br />4 B =An.i econcenba 4ondetectedatavaluebeMee MDLand POL <br />Monitoring Well GW -N9 <br />Current Water Year Data <br />5,734 <br />5,732 <br />-- <br />5,730 <br />5,728 <br />wale, 5,726 <br />- - <br />L�araaoe <br />(fll <br />5,724 <br />5,722 <br />5 720 <br />5,718 <br />5,716 <br />0c1-11 Nov -11 Dec -11 Jan -12 Feb-12 Mar -12 Apr -12 May -12 Jun -12 Ju1-12 Aug -12 Sep-12 <br />Month <br />F \Erg\ DATA \ex iRwate62012\2012_ANUHYD <br />