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Whirlwind Mine Groundwater Characterization Report <br /> including: arsenic, ranging from 0.015 to 0.028 mg/L and uranium, ranging from 0.115 to <br /> 0.397 mg/L. <br /> Initial Whirlwind Decline samples were collected by EFR from 2006 to 2008, followed by <br /> periodic sampling to the present. EFR used various identification titles for samples from the <br /> decline, but all samples from the mine, regardless of where they were collected, were plotted on <br /> a Piper plot (see Figure 11). Except for two samples, the data indicate good overall consistency <br /> in water chemistry reflecting a sodium-bicarbonate type water. The water chemistry of Whirlwind <br /> Mine water shows a chloride and TDS range of 14 to 53 mg/L and 340 to 661 mg/L, <br /> respectively. Whirlwind Mine water has several constituents that exceed state water quality <br /> standards for groundwater including pH, ranging from 7.5 to 10.0 s.u.; arsenic, ranging from <br /> 0.015 to 0.062 mg/L; selenium, ranging from 0.015 to 0.04 mg/L; uranium, ranging from <br /> 0.0828 to 0.463 mg/L; gross alpha, two results at 92.3 and 101 pCi/L; radium-226, ranging from <br /> 2.1 to 40.1; and radium-226/radium-228, ranging from <3.3 to 41.5 pCi/L. <br /> One groundwater sample was collected by Cotter in 1996 in Boring JB 96-2, one of seven <br /> exploration borings drilled on Beaver Mesa approximately 3,500 ft southwest of the Whirlwind <br /> Decline portal. The sample was collected using a bailer after the boring reached a total depth of <br /> 650 ft within the Salt Wash Member. Groundwater was observed at shallower depths in the <br /> Brushy Basin Member in all other borings. Therefore, the collected sample was likely <br /> representative of the Brushy Basin as no groundwater occurrence in the Salt Wash was <br /> confirmed. Unfortunately, the collected sample was not completely analyzed for common ions <br /> and the results could not be plotted with other area chemistry on Figure 8. However, an <br /> examination of other constituent concentrations indicates the water from borehole JB 96-2 is <br /> somewhat unique, having high calcium and extremely low sodium concentrations compared to <br /> water samples collected at borehole BM00-1. Although TDS and alkalinity were similar. The <br /> chemical data from borehole JB 96-2 do not show similarities from other groundwater sources, <br /> including DP Spring, PR Spring, Monitoring Well W-1, or the Whirlwind Decline mine water. <br /> 5.2.3 Salt Wash Sources <br /> PR Spring, Packrat Mine, and Rajah 49 water sources are considered potential sources of <br /> groundwater that have been in contact with the Salt Wash Member. It is also noted that <br /> Western Water& Land, Inc. 30 <br />