Laserfiche WebLink
3. The geotechnical analysis did not account for saturated conditions within the WRL. Map <br />C-2 shows the toe of the WRL is located immediately above the sediment pond. However, <br />Map C-3 shows that the sediment pond and the toe of the WRL are separated by 25'. <br />Please confirm there will be enough separation between these features to prevent <br />saturated conditions in the toe of the WRL. <br />See the revised Map C-3, which has a note confirming the separation between the toe of the <br />WRL and the sediment pond. <br />4. The financial warranty estimate does not include a cost for grading the active stage of <br />the dump. Please revise the financial warranty estimate to include this reclamation task. <br />See the revised pages D-3 and D-4. <br />S. The financial warranty estimate includes a cost for installing steel doors on both portals <br />which will be backfilled. The Applicant has already indicated the steel doors will be in <br />place during active mining operations to prevent unauthorized entry into the mine. <br />Please clarify if the steel doors will remain after the portals have been backfilled. <br />The steel doors will remain in place to prevent access to the closed mine. <br />The table below lists all of the attached revision items for this adequacy response. <br />Attachment Table <br />Attached Page Attached Map <br />0-3 & 4 Map GZ <br />Map C-3 <br />Please contact me if you have any further questions or concerns. <br />Sincerely, <br />Ben Langenfeld, P.E. <br />Greg Lewicki and Associates <br />Detroit City Mine 2 �` ,;r,�,. s,-».. 1 <br />-,,,,..x. 1111 t � F <br />