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Thornton Portal, EFRC, 9/21/09 <br />1 -2 <br />5 <br />581 <br />858 <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 />Thorton Portal, EFRC, 5/30/12 <br /><1 <br />6 <br />550 <br />8 8 <br />361 <br />939 <br />201 <br />9 <br />3 <br />6 <br />23 <br />0 3 <br />0 2 <br />0 058 <br />404 <br />87 <br />Ground Water, Domestic <br />6 5 to 8 5 <br />General Parameters <br />250 <br />4 0 <br />10 0 <br />250 <br />Ground Water, Agriculture <br />6 5 to 8 5 <br />F, <br />2 <br />I 100 1 <br />Alk <br />(m9/L) <br />Surface Water, Stream (e,f) <br />6 5 to 9 0 <br />Ca <br />Mg <br />K <br />CI F <br />NO, <br />P <br />Surface Water, Domestic <br />5 0 to 91:Y <br />1 <br />250 <br />2 0 <br />10 1 <br />250 <br />Surface Water, Agriculture <br />100 <br />Sample Information <br />General Parameters <br />Major Ions (mgIL) <br />F, <br />' TSS <br />(mg/L) <br />TDS pH <br />1 (m9/L) (s u) <br />Alk <br />(m9/L) <br />Cond <br />(PS /cm) <br />Na <br />Ca <br />Mg <br />K <br />CI F <br />NO, <br />P <br />HCO, <br />30, <br />Rajah 49 Mine, Thornton Portal <br />Thornton Portal <br />Colorado Water Standards <br />EPA Water Standards (h) <br />Maximum <br />Average <br />30 <br />60 to 90 <br />20 <br />60 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 dnnking 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 9 of 16 <br />