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No failures or monitoring site problems were encountered during 2013 and no compliance limits <br />were exceeded in 2013. <br />Values of total suspended solids (TSS) were generally on the low side of ranges observed in <br />previous years. Total dissolved solids (TDS) were generally in an indirect relationship with flow rate <br />when adequate flow occurred at a site to determine the relationship. The TDS of the surface water <br />from the mine area is similar to the TDS from the non -mined area and, therefore, an increase has not <br />been defined, except for an increase in TDS during low flow conditions at NPDES sites 001 and 011. <br />The IDS, conductivity and major constituents varied over expected ranges with an increase in values <br />as ground -water flow to the stream becomes a larger portion of the total flow. The SAR values <br />measured in 2013 were within the natural ranges for this site. Other chemical constituents analyzed <br />from samples collected from the surface water sites showed little change. The variations and <br />magnitude in iron concentration observed in 2013 were typical of natural values for these sites. The <br />total aluminum concentrations observed in 2013 were similar to concentrations observed in previous <br />years. The remainder of the minor constituents measured in 2013 are low and within natural ranges. <br />Monitoring data indicates that Trapper Mine sediment control structures prevented any significant <br />impacts on the surface water systems downgradient of the mine in 2013. <br />Trapper Mining Company 6-6 <br />2013 Annual Report <br />