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<br />that is being used for Raise I is routinely running over 35 percent <br />fines. If use of this less permeable material results in saturated <br />lenses within the beach tailings, approval of an additional <br />upstream embankment raise may be jeopardized. The Division will <br />also require a more thorough characterization of the beach tailings <br />at the time that the next raise is proposed (e.g. a higher <br />frequency of cone penetrometer tests) than if a free draining or <br />high permeability material was being used to construct :Raise I. As <br />we discussed during the October 1, 1993 site inspection, BMRI <br />should work on preparing an analysis of the use of non- <br />specification materials, both in raise construction and in the <br />drainage blanket, and the potential impacts on the performance of <br />the tailing impoundment. <br />If you have any questions, please contact me. <br />Sincerely, <br />~~~~~ ~~/c~~~~~~ <br />Allen C. Sorenson <br />Reclamation Specialist <br />cc: Larry Oehler <br />Jim Stevens <br />Jim Pendleton <br />