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• • <br />TABLE 22 <br />CRITERIA FOR EVALUATING SOIL RECONSTRUCTION MATERIAL* <br />Property <br />*Sodium Adsorption Ratio (SAR) <br />*Salinity (mmhos/cm <br />*Soil Reaction (pH) <br />*Soil Reaction (pH) <br />*USDA Texture <br />*USDA Texture <br />**Coarse Frag. (vol. pct.) <br />2mmto3 in. <br />a <br /><5 5-12 <br /><8 8-16 <br />5.6-1.8 4.5-5.5 <br />5.6-1.8 7.9-8.4 <br />-- SCL, CL, SICL <br />-- LCOS, LS, LFS, LVFS <br />0-15 15-35 <br />>12 <br />>16 <br /><4.5 <br />>8.4 <br />C, SIC, SC <br />COS, S, FS, VFS <br />35-60 <br />Restrictive <br />Features <br />Sodium <br />Salt <br />Acid <br />Lime, Alkaline <br />Clayey <br />Sandy <br />>60 Unsuitable Gravel <br />* Adapted from U.S. Soil Conservation Service, National Soils Handbook. (Soil Survey Staff 1983). <br />Good - Vegetation is relatively easy to establish and maintain, the surface is stable and resists erosion <br />and the reconstructed soil has good potential productivity. <br />Fair -Can be vegetated and stabilized by modifying one or more properties. Topdressing with better <br />material or application of soil amendments may be necessary for satisfactory performance. <br />Poor - Such severe problems that revegetation and stabilization is very difficult and costly. Topdressing <br />with better material is necessary to establish and maintain vegetation. <br />**Adapted from Wyoming Department of Environmental Quality, Draft Guideline No. 1 (1983). <br />