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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, are 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 CONSTITUENTS <br />Field pH values for all sites were very similar in 2006 to previous data. Values typically <br />ranged from near neutral to 9 for pH values at NPDES site 001. Other constituents analyzed <br />showed little change with all minor constituents within their natural ranges. The 2006 total <br />aluminum values had peaks similar to historical peaks at this site. All values addressed in this <br />report above permitted discharge levels have been addressed in the quarterly NPDES discharge <br />reports (DMR's) and justifications for those values, i.e. storm water, snow cover melt -out, etc., <br />have been submitted to the proper regulatory authorities. The iron concentrations observed in 2006 <br />in the surface water for this readily available constituent were similar to the range in values <br />observed historically at this site. <br />Trapper Mining Company 5 -3 <br />2006 Annual Report <br />