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Baseline sampling of the Pyeatt (S-3) and Flume (S-1) drainages were performed <br />during the later portion of the permit terms. Map M30B shows sampling sites labeled <br />S-1 and S-3. Table 2.7-18a presents analyses of baseline conditions found in the <br />tributaries during this term. <br />Figures 2.7-18a and 2.7-18b present plots of TSS from March 1985 to November <br />1986 for sites S-1 and S-3. As mentioned previously, TSS concentrations usually are <br />highest during the spring snowmelt runoff season. This holds true for the spring <br />season of 1985 at site S-3. At site S-1, the higher TSS values occurred from <br />November 1985 to May 1986. This shows that the snowmelt runoff due to the unusually <br />warm temperatures caused above average TSS concentrations during [he winter of 1986. <br />The TSS concentration for this period was between 4 mg/1 and 772 mg/1 at S-1, and <br />less than 2 mg/1 to 1950 mg/1 for site S-3. From Figures 2.7-18a and 2.7-18b it is <br />evident that the baseflow TSS concentrations for S-1 are higher than at site S-3. <br />Conversely, the TSS values at peak flows are higher at site S-3 than at site S-1. <br />The relationship between TSS and discharge shows a lot of scatter at both <br />sites. This is due to the samples being taken at different stages of a runoff <br />hydrograph and during different seasons (see Figures 2.7-18c and 2.7-18d). <br />TDS values at sites S-1 and S-3 shows marked seasonal variation (Figures <br />2.7-18e and 2.7-18f). As described previously, the enowmelt runoff seasons have <br />lower TDS values than during the lower runoff baseflow seasons. Both basins show <br />the same range of variation. In both basins, TDS is in the range of 900 mg/1 during <br />the snowmelt runoff of 1985 and 1400 mg/1 during the spring of 1986. The values of <br />TDS at site S-1 are in the range between 544 and 1756 mg/1. The concentration of <br />w <br />2-451a <br />~~~ FEB 13'87 <br />