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Subsurface Dis sal Site: <br />It is proposed to dispose of the waste rock <br />product from the leaching Ing facility by stowing it in <br />doing this, the mine. By <br />. the waste rock will have a 250 -foot <br />impervious ever of <br />relatively mpervious rock and soil. <br />creep may be In the long term, some fault <br />expected to occ ur along the faults in <br />this cr the mine; however, <br />eep should have little adverse effect on the integri <br />storage site. Total Past displacements of the <br />splacements on the faults in the <br />amounted to about 80 f mine have <br />eet since the Paleocene or older geol <br />In our opinion, there is no ogic times, <br />fault displacements reason to expect that the rate of future <br />will exceed the rates which have occurred in the <br />geologic past. <br />Some erosion is occurring along the ephemeral drain <br />vicinity of the disposal ges in the <br />Posal site. Judging from the effect of past <br />erosion on the landslide deposits, which are Probabl <br />Quaternary age, it does Y of early <br />not sew likely that future erosional <br />Processes will be r <br />apid enough to affect the long disposal site g term integrity of <br />considering the depth of cover. <br />The proposed subsurface disposal site is invulnerable <br />earthquake effects to <br />cts even in the event of a lac <br />Storage of waste � nearby earthquake. <br />rock will decrease the surface <br />subsidence should it effect of mine <br />° cow' in the future. <br />SIC CONDITIONS AFFECTING THE PROPOSED PROJECT <br />f;';'sed on the findings indings of our study, it is our opinion that <br />=Y•ogic conditions in the <br />area of the prnposed leaching plant site <br />-29- <br />