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• <br />TDS, conductivity and major constituents tend to increase as the ground-water contribution <br />becomes a larger portion of the flow. The values, in general, aze within natural ranges but some <br />increase over baseline has likely occurred at NPDES site 001. No long-term trends are indicated by <br />the major constituents except for NPDES site 001, which may have stabilized after several years of <br />generally increasing. <br />5.3 OTHER CONSTIT[7ENTS <br />Field pH values for all sites were very similaz in 2005 to previous data. Values typically <br />• <br />ranged from neaz neutral to 9 for pH values at NPDES site 001. Other constituents analyzed showed <br />little change with all minor constituents within their natural ranges. All values addressed in this <br />report above permitted discharge levels have been addressed in the quarterly NPDES discharge <br />reports (OMB's) and justifications for those values, i.e. storm water, snow cover melt-0ut, etc., have <br />been submitted to the proper regulatory authorities. The iron concentrations observed in 2005 in the <br />surface water for this readily available constituent were lower than normal. <br />Trapper Mining Company <br />2005 Annual Report <br />5-3 <br />