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Spoil Springs — Data for sites SS -1 (toe of backfill NH1 mine) and SS -2 (up gradient of SS -1) <br />have been complied and are shown on the summary tables below and graphically. Summary <br />tables for indicator parameters are provide below for each site and include data from 2008 to the <br />end of September of 2017 if available. <br />a•` ad1i..: '°:?k"'.k_�... :5:e..'ik�'�' .�..5 •'+Y.°k.rkir.i�.m"*°r,:.s.='a_..s`A•.'n <br />'w.t$t"w i'. - 3'.Y �4'•od'=' <w <br />Vi <br />Mean <br />p `k <br />Range <br />`'1 <br />Min. <br />`, <br />Min at <br />t. <br />,. <br />�x <br />7.9 <br />0.5:2 <br />' <br />7.7(' <br />5/22/14 <br />rd;"a�igptt <br />2,922 <br />609 <br />2,916430_ <br />514/ <br />11/25/13 <br />tn <br />. TDS <) <br />2,708 <br />656 <br />2.970 <br />3,2$0 <br />310 <br />11117/14 <br />11/25/13 <br />Sulfate (mg/1) <br />1,726 <br />453 <br />2,009 <br />2,150 <br />141 <br />11/17!14 <br />11/25/13 <br />Calcium (mg/l) <br />491 <br />109 <br />511 <br />586 <br />75 <br />11/17/14 <br />11/25/13 <br />Imn (tot rec ug/1) <br />1,925 <br />2,658 <br />10,000 <br />10,400 <br />400 <br />11/27114 <br />8/19/14 <br />Magnesium (mg/1) <br />204 <br />21 <br />245 <br />259 <br />14 <br />2/12/15 <br />11/25/13 <br />Sodium (mg/1) <br />38 <br />10 <br />46 <br />53 <br />7 <br />5/16/17 <br />11/25/13 <br />SS -2 <br />Parameter Mean Std Range Max. Min. Max at Min at <br />dev <br />Lab pH - - - - - - - <br />Lab Cond. (umhos/cm) - - - - - - - <br />TDS (mg/1) - - - - - - - <br />Sulfate (mg/1) - - - - - - - <br />Calcium (mg/1) - - - - - - - <br />Iron (tot rec ug/1) - - - - - - - <br />Magnesium (mg/1) <br />Sodium (mg/1) <br />A review of the water year data no minimums or maximums occurred at either spring. SS -2 was <br />did not flow for the entire water year. <br />111Page <br />