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Table 5 Rajah 49 Mine, Thornton Portal (Rajah Spring) <br /> General Parameters Major Ions(mg/L) <br /> Sample Information Flow TSS TDS pH Alk Cond Na Ca Mg K CI F NO3 P HCO3 SOq <br /> (mg/L) (mg/L) (s.uJ (mg/L) (PS/CM) <br /> Thornton Portal (Rajah Spring) <br /> Thornton Portal, EFRC, 9/21/09 1-2 5 581 8.58 373 938 209 7 3 6 20 0.4 0.3 0.062 412 96 <br /> Thornton Portal, EFRC, 6/30/10 1-2 <4 537 8.9 379 889 207 7 3 7 23 0.3 0.2 0.102 431 86 <br /> Thornton Portal, EFRC, 5/24/11 <1 <4 571 9.16 360 985 216 7 3 6 24 0.4 0.2 0.091 403 93 <br /> Thorton Portal, EFRC, 5/30/12 <1 6 550 8.8 361 939 201 9 3 6 23 0.3 0.2 0.058 404 87 <br /> Thorton Portal, EFRC, 6/17/2013 <1 412 691 7.95 379 844 92 9 3 7 25 0.3 0.32 0.192 441 92 <br /> Thorton Portal, EFRC, 6/17/2014 <1 <10 579 8.69 366 973 209 7 3 6 24 0.3 0.5 0.196 414 94 <br /> Thornton Portal, EFRI, 8/5/15 <1 <10 578 8.35 352 1030 210 8 3 6. 24 0.4 0.5 0.053 393 92 <br /> Thornton Portal, EFRI, 6/1/16 <1 <10 584 8.77 386 888 207 7 3 6 22 0.3 0.6 0.053 430 84 <br /> Thornton Portal, EFRI, 6/7/17 <1 10 1 569 8.74 360 911 200 7 3 6 25 1 0.3 1 0.7 0.053 405 100 <br /> Colorado Water Standards <br /> Ground Water, Domestic 6.5 to 8.5 250 4.0 10.0 250 <br /> Ground Water, Agriculture 6.5 to 8.5 2 100 <br /> Surface Water, Stream e,f 6.5 to 9.0 <br /> Surface Water, Domestic 5.0 to 9.0 250 2.0 10 250 <br /> Surface Water, Agriculture 100 <br /> EPA Water Standards(h) <br /> Maximum 30 6.0 to 9.0 <br /> Average 20 16.0 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 />