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Table 5 <br />Predicted Impacts of Mining on Salt Loading <br />In the San Miguel River Below Tuttle Draw. <br />Salt loading values in tons of salt per day. <br />Percent changes [in brackets] are from baseline salt levels. <br />Salt Levels <br />Time Periods Flows ase ine i uc a ine i uc a an os - <br />and Flow Regimes (cfs) in Operation2 Nucla East t4ines Mining4 <br />in Operation3 <br />Irrigation Season 135.7 176.5 180.6 181.5 195.2 <br />02.37 C2.9] 010.6] <br />Non-irrigation <br />Season <br />815.6 1004.0 1007 <br />[0.3] <br />1009 <br />[0.5] <br />1011 <br />Ca. 7] <br />Means <br />Low Flow <br />Irrigation Season <br />360.45 576.56 584.5 585,2 589.4 <br />01.47 C1.5] C2, 27 <br />12.4 65.7 68,8 70.5 84.5 <br />C6,17 C7.2] C28.5] <br />Non-irrigation 8.3 37.8 42.8 4'3.5 44.6 <br />Season [13.2] [15] C17,8] <br />1 San t4iguel River above Tuttle Draw plus Site SW-N103 (Calamity Draw) plus <br />Site SW-N1 (Tuttle Draw above the Nucla Mine). <br />2 San Miguel River above Tuttle Draw plus site SW-N103 (Calamity Draw) plus <br />Site NW-3 (Tuttle Draw downstream from the Nucla Mine). <br />3 San t4iguel River above Tuttle Draw plus Site SW-N103 (Calamity Draw) plus <br />Nucla East Pit dewatering projection plus Site SW-N3 (Tuttle Draw <br />downstream from the Nucla Mine). <br />4 San Miguel River above Tuttle Draw plus Site SW-N103 (Calamity Draw) plus <br />Site SW-N1 (Tuttle Draw above the Nucla Mine) plus the Nucla spoils <br />projection plus the Nucla East spoils projection. <br />5 Mean flow obtained from historical data compiled by Iorns (1965). <br />6 Mean TDS obtained from USGS Site 09175500 at Naturita from 1961-1981. <br />-28- <br />