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• Table 17-2-5 <br />Computations for Non-irrigation Season Impact Analyses for <br />Low Fl orv Mine Discharges and the 07 10 San Miguel Flow <br />I. Background Salt Contributions from Upstream San Miguel, Calamity Draw and Tuttle Draw <br />6.48 cfs x 1,240 mg/1 + 1,75 cfs x 3,356 mg/1 + 0.05 cfs x 2,079 mg/1 <br />6.48 cfs + 1,75 cfs + 0.05 cfs <br />74,012.2 = 1,692 mg/1 <br />8.28 <br />Tonnage of Salt in San Miguel Below Tuttle Draw <br />8.28 cfs x 1,692 mg/1 x .0027 = 37,83 tons/day <br />II. During Mining Impacts to the San Miguel from Nucla and Nucla East Via Tuttle and <br />• Calamity Draws <br />6.48 cfs x 1,240 ma/1 + 1.75 cfs x 3,356 mg/7 + 0.59 cfs x 3,284 mg/1 + 0.065 cfs x 4,493 mg/1 <br />6.48 cfs + 1,75 cfs + 0.59 cfs + 0.065 cfs <br />16,137.8 = 1,815.3 mg/1 <br />8.89 <br />Tonnage of Sait in San Miguel Below Tuttle Draw During Mining <br />8.89 cfs x 1,815 mg/1 x .0027 = 43.57 tons/day <br />Salinity Impacts During Mining <br />1,815 mg/1 - 1,692 mg/1 x 100 = 7,3@ increase in TDS <br />1,692 mg/1 <br />• 43.57 tons/day - 37.83 tons/day x 100 = 15.2 increase in salt load <br />_ 37.83 <br />