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Ground Water, Domestic <br />General Parameters <br />Major Ions (mg /L) <br />Flow <br />6.5 to 8.5 <br />TDS <br />(mg /L) <br />pH <br />(s.u.) <br />Alk <br />(mg/L) <br />Cond <br />(pS /cm) <br />Na <br />Ca <br />250 <br />4.0 <br />10.0 <br />F <br />NO <br />250 <br />Ground Water, Agriculture <br />$0 <br /><4 <br />537 <br />6.5 to 8.5 <br />379 <br />889 <br />207 <br />7 <br />3 <br />7 <br />23 <br />2 <br />100 <br />0.102 <br />431 <br />86 <br />Surface Water, Stream (e,f) <br /><1 <br /><4 <br />571 <br />6.5 to 9.0 <br />360 <br />985 <br />216 <br />7 <br />3 <br />6 <br />24 <br />0.4 <br />0.2 <br />0.091 <br />403 <br />93 <br />Surface Water, Domestic <br />5.0 to 9.0 <br />250 <br />2.0 <br />10 <br />250 <br />Surface Water, Agriculture _ <br />100 <br />Sample Information <br />General Parameters <br />Major Ions (mg /L) <br />Flow <br />TSS <br />(mg /L) <br />TDS <br />(mg /L) <br />pH <br />(s.u.) <br />Alk <br />(mg/L) <br />Cond <br />(pS /cm) <br />Na <br />Ca <br />Mg <br />K <br />CI <br />F <br />NO <br />P <br />HCO <br />$0 <br />Thornton Portal, EFRC, 9/21/09 <br />1 -2 <br />5 <br />581 <br />8.58 <br />373 <br />938 <br />209 <br />7 <br />3 <br />6 <br />20 <br />0.4 <br />0.3 <br />0.062 <br />412 <br />96 <br />Thornton Portal, EFRC, 6/30/10 <br />1 -2 <br /><4 <br />537 <br />8.9 <br />379 <br />889 <br />207 <br />7 <br />3 <br />7 <br />23 <br />0.3 <br />0.2 <br />0.102 <br />431 <br />86 <br />Thornton Portal, EFRC, 5/24/11 <br /><1 <br /><4 <br />571 <br />9.16 - : <br />360 <br />985 <br />216 <br />7 <br />3 <br />6 <br />24 <br />0.4 <br />0.2 <br />0.091 <br />403 <br />93 <br />Rajah 49 Mine, Thornton Portal <br />Whirlwind Monitoring Well, W -1 <br />Colorado Water Standards <br />EPA Water Standards (h) <br />Maximum <br />Average <br />30 <br />20 <br />6.0 to 9.0 <br />6.0 to 9.0 <br />Notes: <br />1. Water standards are provided for reference only. These standards do not apply to the site groundwater unless it is used for drinking water, irrigation, or other <br />regulated uses. <br />2. Concentrations or activity levels above a state or federal standards are shaded for reference purposes. Shading indicates that the measured level is elevated <br />compared to certain standards of water use. <br />3. Metal and radionuclide levels are reported as total recoverable. <br />Table 5 Water Quality Data <br />Rajah 49 Mine, Thornton Portal <br />Page 1 of 2 <br />