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30 <br /> <br />1 <br />2 <br />establish a grout curtain in this area here <br />(indicating). This slurry wall will then be <br />backfi.lled and should inhibit inflows from the <br />alluvial aquifer system into the pit area. <br />We do not have the engineeriing -- <br />3 <br />4 <br />5 <br />6 <br />7 <br />8 <br />9 <br />10 <br />11 <br />~ 12 <br />• 13 <br />14 <br />15 <br />16 <br />17 <br />• <br />18 <br />19 <br />20 <br />21 <br />22 <br />23 <br />24 <br />25 <br />let me back up. <br />This is a proven technology. It's <br />been used at CIRCLA Superfund-type sites. It's been <br />used at mining operations and other commercial <br />operations. <br />We do not have a specific engineered <br />curtain at this point, and I'll address that issue <br />later on in my presentation. <br />In addition, Rito Seco again will be <br />crossed, as I've indicated, by the haul road. We <br />have asked the Army Corps of Engineers to make <br />a determination as to what sort of permitting process <br />would be required through their office, and they have <br />decided that a nationwide permit is necessary which <br />differs from the 404, and apparently the nationwide <br />permit process is currently active and appa.r_ently has <br />actually been issued to Battle Mountain at this point <br />in time. <br />The Army Corps does not feel that <br />impacts to the Rito Seco from the operation or from <br />