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Reclamation Plan <br />The overall reclamation plan objectives are to reclaim washed fines impoundment areas <br />to stable cover, reclaim mined slopes to the permitted 3H:1V, and provide slopes that <br />can be revegetated for all disturbed areas. <br />The material within the washed fines impoundment areas varies in grain size and <br />moisture content. Materials are segregated by size with some impoundment areas <br />dominated by the coarser fraction, and some containing primarily finer grained material. <br />Segregation also occurs within an impoundment area with the finest grained material <br />deposited at the lowest elevation point of the impoundment area. Moisture content <br />varies with grain size and impoundment area configuration. <br />It is anticipated that varying amounts of fill material will be necessary to stabilize the <br />cover of the areas depending on the characteristics of the impounded material. Olson <br />and Associates, Inc., geotechnical consultants to Lafarge, recommended a fill material <br />depth of 2 feet placed over geotextile material. This was the depth of fill material used <br />for the reclamation plan and calculations. Where needed, additional material was used <br />to attain positive drainage off of the washed fines impoundment areas. <br />The reclamation plan is presented herein as Exhibit F. The design criteria used in the <br />proposed reclamation plan are as follows: <br />Fill slopes no steeper than 3H:1 V are currently permitted and employed for the <br />reclaimed mine slopes. This maximum slope was used for the proposed <br />reclamation plan. <br />• Mined areas in Phases 5-8 and the waste fines impoundment areas will drain to <br />the draw located east of Phase 1. <br />The ditches at the south end of Phase 8 will be routed around the south end of <br />the Phase 8 boundary. <br />Future washed fines impoundment areas are indicated on Exhibit C. These <br />areas reflect the current best estimate based on Lafarge's sand removal <br />techniques and changes in impoundment area configuration to a deeper and <br />smaller surface area impoundment. <br />Washed fines impoundment areas are covered and regraded using screened <br />fines and geotextile materials. <br />Material Balance <br />The quantity of material remaining to be mined was estimated. The mining plan and <br />quantities are based on an average mining depth of approximately 28 feet to be <br />maintained and approximately 4 feet of overburden to be stripped off all mined land. <br />