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The minor constituent variations have been erratic. No changes in these <br />constituents are thought to be attributed to mining. The 2003 radium 226 concentrations <br />have been small and the variation in radium 226 wncentrations are thought to be natural. <br />6.2 SURFACE WATER <br />Peak flows for the surface water sites at Trapper Mine in 2003 were from typical <br />Spring snowmelt except the discharge from NPDFS 020. The precipitation in 2003 was <br />14.14 inches, or greater than two inches below the 26-year average for the Trapper Project. <br />The last six years of annual precipitation have been below normal precipitation. No failures <br />or monitoring site problems were encountered during 2003 and no compliance limits were <br />exceeded in 2003. <br />Values of total suspended solids (TSS) were generally on the low side of ranges <br />observed in previous years. Total dissolved solids (TDS) were generaly in an indirect <br />relationship with flow rate when adequate flow occurred at a site to determine the <br />relationship. The TDS of the surface water from the mine area is similar to the TDS from <br />the non-mined area and, therefore, an increase has not been defined, except for an <br />ina~ease in TDS during low flow wnditions at NPDFS sites 001 and 011. The TDS, <br />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 <br />values measured in 2003 were within the natural ranges for this site. Other chemical <br />constituents analyzed from samples collected from the surface water sites showed little <br />change. The variations and magnitude in iron concentration observed in 2003 were below <br />the range of natural values for these sites. The total aluminum concentrations observed in • <br />6-6 <br />