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• according to the wind erodibility group. Potential slippage hazard is related to soil texture, and although other factors also contribute, the ratings of soil tex- ~ Lure represent one important factor. Erosion K factors and wind erodibility group are from SCS data (Soil Survey Interpretation Forms - Appendix III. USDA texture also influences a number of properties Listed above such as available ~ water capacity and erodibility by wind or water. Texture also influences soil structure and consistence, water intake rate, runoff, fertility, workability, and trafficability. ~ Fraction >3 inches is a weight percentage of rock fragments in the material used for soil reconstruction. Rock fragments influence the ease of excavation, stockpiling and respreading, and suitability for the final use of the land. A certain amount of rock fragments can be tolerated depending upon size and the intended use of the ~ reclaimed area. If the size of rock fragments exceed 10 inches the problems are more severe. Fraction > 3 inches is estimated in the field. This guide does not cover all the soil features required in planning soil recon- ~ struction, for exam le s1o a thickness of material, ease of excavation p p potential slippage hazard, and soil moisture regime. Slope of the original soil will influ- . ence the method of stripping and stockpiling of reconstruction material but may have little effect on the final contour and therefore, on the stability and productivity ~ of the reconstructed soil. Therefore, slope is not a criteria in Table 5-1. • 5.2 SOIL CHEMISTRY Table 5-2, Soil Test Report for Colorado MLRB Requirements, presents the result of soil analytical testing on the soil profiles, stockpile samples, fill samples and a topsoil samples. Parameters reported in Table 5-2 are pH, SAR, EC, saturation ~ percent, texture, and boron, selenium and molybdenum. This data is used, according to the criteria of Table 5-1, to evaluate the soil as a plant growth media. ~ - 15 -