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the major constituents except for NPDES site 001, which may have stabilized after several years of <br />generally increasing. <br />5.3 O111ER CONSTITUENTS <br />Field pH values for all sites were very similar in 2012 to previous data. Values typically <br />ranged from near neutral to less than 9 for pH values at the surface water sites. Other constituents <br />analyzed showed little change with all minor constituents within their natural ranges. The 2012 total <br />aluminum value was similar to historical values for the Trapper surface water with a high of 12.5 <br />mg/1 at NPDES site 017. All values addressed in this report above permitted discharge levels have <br />been addressed in the quarterly NPDES discharge reports (DMR's) and justifications for those <br />values, i.e. storm water, snow cover melt -out, etc., have been submitted to the proper regulatory <br />authorities. The iron concentrations observed in 2012 in the surface water for this readily available <br />constituent were similar to the range in values observed historically at this site. <br />Trapper Mining Company 5 -3 <br />2012 Annual Report <br />