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previous few years. The range in the 2014 conductivity data was similar to the historical range for <br />low flow rates. Figure C -17 shows a good inverse relationship between flow and conductivity for the <br />data at this site. <br />The conductivity values for NPDES site 011 and 017 are shown Figure C -18, with values <br />from NPDES site 011 covering most of the historical range and only two low value from the NPDES <br />site 017 for 2014. Figure C -19 shows the 2014 conductivity values from site 011 exist in the upper <br />half of the previously observed conductivities. Figures C -20 and C -21 present the limited data that <br />has been collected at the NPDES 018 and 020 sites. <br />Conductivity of water for site S -1 has been fairly steady with time (Figure C -22). The 2014 <br />conductivity is within the range that has been defined at this site. Figure C -23 presents the <br />conductivity versus flow for the S -1 site. The conductivity measured in 2014 for the S -1 site is within <br />the range measured for this site. <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, 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 2014 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 2014 total <br />aluminum value was similar to historical values for the Trapper surface water with a high of 6.6 mg/l <br />Trapper Mining Company 5 -2 <br />2014 Annual Report <br />