1986-11-01_PERMIT FILE - C1981008A (3)

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19 The selection of cover crops,western grasses, forbs and shrubs that are commonly tolerant to moderately alkaline, calcareous soils is recommended. In general no serious problems in the use of these materials for top- soiling should be encountered. However, other characteristics do lower soil quality as judged by the standard guides used. These are soil texture,consistence (degree of hardness of soil aggregates, dry or moist) and the presence of stones. These are discussed further in the section on topsoil materials. Interpretations Tables 4 and 5 and Map 2 have been prepared to summarize and interpret the survey and laboratory data into useful categories. Guidelines used are taken from the USDA Soil Conservation Service (National Soil Survey Handbook Part II, Section 400) ; the Wyoming Department of Envir- orlrnent Quality (WDEQ Guidelines 1 and 3) , and research findings on toxicity of minor elements. (See Kirkham M,B, 1975; ASA(book)Soils for Management of Organic Wastes and Waste Waters, 1977) Amount and Suitability of Topsoil Materials Table 4 summarizes from map measurements, field survey and laboratory data, the general qualities of the soils and shows (computed in acre- feet) the amount of topsoil considered usable for reclamation purposes. The acreages were determined by the dot-square count method (1 square inch = 3.911 acres on the printed map copies; 1 sq. 2" X 2" = 0.9777 acres and 1 dot = 0.1955 acres) . The general textural class is the USDA classification based on relative percents of sand, silt and clay (USDA Handbook 18, 1951) . Very fine sand was not separated in these analyses. Most all textures were within the sandy clay loam textural class although a few sandy loams were found. Permeability is considered as moderate (0.6-2.0 inches/hour) for soils of this texture, structure and consistence.