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• Exhibit D <br />Mining Plan <br />The previously approved Mining Plan will not be changed for this proposed <br />amendment except as recommended by Mr. Greg Lewicki in the Slope Stability <br />Report (July 27, 2002) prepared for this Amendment Application. <br />This additional acreage is leased from Mr. and Mrs. Glen Black. The landowners have <br />requested that additional gravel be removed from their property to maximize resource <br />utilization and cash flow from the gravel resource at the site. This proposed <br />Amendment will add approximately 1 year to the life of this mining operation. <br />This Amendment will add approximately 3.25 acres of land to the approved permit <br />area. This increase will increase the area of affected land from 55.19 acres to 58.44 <br />acres. <br />The proposed Amendment area adjoins the existing mining area. The Mining Plan that <br />has been previously approved for the Pit #1 operation will be extended to the new area <br />and mining practices will generally remain the same as approved in the original Permit <br />Application and Technical Revision 1. <br />At the suggestion of Mr. Greg Lewicki P. E. the author of the Slope Stability Report <br />that United Companies commissioned for the Delta Sand and Gravel Pit # 1, grave] <br />• will be taken from a steep face (0.5 H:1.0 V) until mining activity approaches the <br />Excavation Limit. The final slope of 3H:1 V will be achieved by cutting overburden <br />and gravel material from the upper part of the active face and filling the toe of the final <br />slope. Please refer to the Slope Stability Report by Mr. Lewicki that is attached to this <br />Application (Exhibit L Permanent Man-Made Structures) for additional details <br />concerning the engineering rationale for this method. <br />• <br />