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so that retention of the existing silt fence is no longer <br />necessary. It is the Division's understanding that this is desired <br />because of the continuing maintenance demands of the silt fence. <br />The above items can be incorporated into the permit through the <br />submission of one single technical revision which should be <br />sumbitted by March 31, 1996. <br />A second technical revision will also be required to address the <br />backfill and grading plan for the main facilities area. This issue <br />was identified in 1992 and resolution was delayed until the <br />Division received final approval on amending the highwall rules. <br />Now that the new rules have been implemented, a new backfill and <br />grading plan that effectively eliminates the existing highwalls, or <br />backfills to the extent possible while maintaining a safety factor <br />of 1.3 should be submitted. This area is currently covered in <br />volume 6-A and the main areas of concern are the office level and <br />the upper fan level at the main mine. The revision should address <br />backfilling and grading, material handling, post-mining contours <br />(including new cross-sections) and stability. Any additional <br />variance to approximate original contour should also be addressed <br />in this revision. This revision should also be submitted by March <br />31, 1996. <br />III. Summary of Revisions and 6tipulations <br />There has been one permit revision, five technical revisions and 13 <br />minor revisions since the last permit renewal. A summary of these <br />permitting actions is listed below. <br />Permit Revision 6ummarv <br />NO. Topic Decision Date <br />3 Addition of 510 acres to the permit Approved 7/30/93 <br />area w/stips <br />Technical Revision Summary <br />NO. TOD1C <br />23 Revise seed mix <br />24 Hydrology monitoring reduction <br />25 Revise waste pile design <br />26 Revise ownership and controller <br />information <br />27 Pond repair plan <br />Decision Date <br />Approved 12/30/93 <br />Approved 3/22/94 <br />Approved 9/26/94 <br />Approved 6/16/95 <br />Approved 12/18/95 <br />5 <br />