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2.05.4 page 5 <br />August 2005 <br />9(4)(a). The azea under stockpiled soIl will not require replacement of plant growth medium; <br />however, all areas disturbed by removal of plant growth medium will be reclaimed in the same <br />manner as described for mine disturbed area in Section 2.05.4. <br />Suitable plant growth medium should also be obtainable from the sediment ponds overburden <br />and embankment material. These soils have also been sampled and analyzed by the soils lab at <br />Colorado State University (See Appendix 9(4)(a)). Stockpiled soils (Subsoil Storage Area) are free <br />from contamination with stockpiled coal and are located so as to eliminate erosion of the stored soils <br />(See Map C-4). Reclamation of the permit area would commence at the end of the life of the mine. <br />RECLAMATION PLANT GROWTH MEDIUM <br />All stockpiled plant growth medium plus the suitable overburden/sediment pond material to be <br />used in reclamation wi21 be tested for the following parameters: <br />1. pH <br />2. Conductivity <br />3. Texture (particle size distribution) <br />4. Sodium absorption ratio <br />5. Saturation percentage <br />6. If pH is over 8, test will be made for selenium and boron. <br />7. Fertilization: <br />Nitrogen <br />Phosphorus <br />Potassium <br />8. Suitability as a plant growth material. <br />Plant growth medium shall be placed to a finished depth of 6 inches over all graded and <br />backfilled areas. Plant growth medium placement operations will be completed in conjunction with <br />processing backfill and grading operations to assure uniform distribution of plant growth medium <br />over all exposed areas. When backfill operations reach a maximum height of 10 vertical feet, plant <br />growth medium shall be applied to that slope area to within 2 feet of the top of the existing bench. <br />Brows or overhangs shall be rounded to conform to the existing surrounding terrain and plant growth <br />medium applied thereto. <br />The bulk of the fill for reclamation of the disturbed mine azea will be produced by re- <br />contouring the slopes in such a manner as to leave on the surface those materials determined to be <br />most easily amended to satisfactory plant growth. Additional soil will be taken from a borrow area in <br />the east drainage area below the plateau (Topsoil Borrow Area). For a description of this material <br />and explanation of source and intended disposition see Section 2.04.9 and Appendix 9(4)(a). <br />Coverage of the permit area with plant growth medium for re-seeding and plant growth will be <br />as follows: <br />Location Soil Depth <br />Access road and areas not to be reclaimed: None <br />Pond Area (Area 1) <br />None (except material found during <br />reclamation) <br />Lower Facilities Area (Area 2) <br />None (except material found during <br />reclamation) <br />