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• Suitable topsoils are discussed by quality, also. Higher <br />quality, upper horizons of Class t and 2 soils could be <br />stockpiled separate from~the lower quality materials and <br />used as a top dressing during reclamation. <br />Class 1 <br />These soils are deep or very deep with Pair to good <br />suitability as a plant-growth medium. Depth of topsoil <br />material is greater then 40 inches. These soils have loamy <br />or Pine textured surface and subsurface horizons which are <br />rich in organic matter. This upper 50 inches of high quality <br />soil would be excellent as a top dressing during Pinal <br />reclamation. It has the most desirable characteristics for <br />• seedbed material. This layer is high in organic matter, native <br />plant seeds, and is generally rated good in all chemical <br />and physical characteristics. A six-inch layer of this soil <br />placed on the surface of reclaimed land would greatly enhance <br />seed germination success and plant establishment. <br />The Class 1 soil series in the survey area is I.amphier <br />loam. These soils predominantly have loam A horizons and <br />fine sandy loam C horizons. They are well drained with <br />moderate permeability. They are nonsaline and mildly alkaline <br />throughout their profile. Wind and water erosion hazard is <br />low. Tilth at optimum moisture is fair to good. The potential <br /> for compaction is moderate to high. Soil structure has fair <br />• to good stability against wet slumping. Crusting potential <br />i <br />19 _ <br />