Laserfiche WebLink
Page 3 December 19,2018 <br /> Analytical Results <br /> The groundwater chemistry data are presented in Table the - <br /> BLM and DRMS. This submittal does not address the details of the chemistry data or attempt to <br /> interpret the results.However,there are a few characteristics worth noting.One is that wells MW-SunI <br /> and MW-Sun3 have high carbonate concentrations and pH values.Future sampling of these wells may <br /> reveal a change in chemistry. Because of the slow well yield, purging of these wells is very time <br /> consuming; any changes in chemistry may be realized over many sampling events. In addition, during <br /> drilling of well MW-Sunl, the driller used an excessive amount of foam in the drilling water, as the <br /> extracted groundwater had substantial foam present during well purging. Some of this foaming may <br /> have been related to degassing of carbon dioxide in the groundwater. Groundwater samples at well <br /> MW-Sun3 were typically turbid - the result of incomplete well development - again due to low well <br /> recovery rates. <br /> Table 1.Sampling Events for the Sunday Mines Complex Monitoring Wells <br /> Well MW-Sunl Well MW-Sun2 Well MW-Sun3 <br /> Date Sample ID Date Sample ID Date Sample ID <br /> 12/10/2012 Sunday 1 1/23/2013 MW-Sunday#2 7/31/2013 Sunday MW-3 <br /> Sunday 65(Dup) MW-Sunday#2 Sunday MW 65 <br /> 65(Dup) (Dup) <br /> 9/24/2013 SMW1 Pre 9/25/2013 SMW 2 Pre 9/23/2013 SMW3 Pre <br /> SMW11(Dup) SMW 2 Final SMW3 Pre 2 <br /> SMW 1Final <br /> Reanalysis SMW1Pre2 <br /> Reanalysis SMW1Final2 <br /> Reanalysis SMW11(2)(Dup) <br /> 12/10/2013 Sun 12/11/2013 Sun 2 9/26/2013 SMW 3 Final <br /> 3/10/2014 Sunday MW1 3/11/2014 Sunday MW 2 12/10/2013 Sun 3 <br /> Sunday MW I Sun 33(Du ) <br /> 5/12/2014 MW Sun 5/13/2014 MW Sun 2 3/10/2014 Sunday MW 3 <br /> 9/24/2014 MW-Sun 1 9/25/2014 MW-Sun 2 5/13/2014 MW Sun 3 <br /> MW Sun 33(Dup) <br /> 9/24/2014 MW-Sun 3 <br /> Additional pertinent data includes two groundwater samples that were collected from the Sunday and <br /> West Sunday mine workings on September 16, 2015. The samples were collected from flooded <br /> workings.Figure 6 illustrates the approximate sampling locations of these samples;associated data are <br /> shown in Table 2. <br /> Upon request by WUC, WWL will prepare a formal hydrogeologic report of the Sunday Mine <br /> Complex based on the results of the groundwater monitoring program and other sources of information <br /> associated with past hydrogeologic investigations. The report will present hydraulic data collected at <br /> the monitoring wells and provide an interpretation of the hydrochemical data and a hydrogeologic <br /> conceptual model of the mine vicinity. <br /> LWest_121918.doc <br />