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• Table 4.4-1 <br />Soil Reconstruction Material for Drastically Disturbed Areas <br /> <br />Property <br />Good Limits <br />Fair <br />Poor Restrictive <br />Feature <br />1. Sodium Adsorption <5 5-12 12 Excess Sodium <br /> Ratio (SAR) <br />2. Salinity (MMHOS/CM) <8 8-16 16 Excess Salt <br />3. Toxic Materials Low Medium High Toxicity <br />4. Soil Reaction (pH)a 5.6-7.8 4.5-5.5 <4.5 Too Acid <br />5. Soil Reaction (pH) <7.9 7.9-8.4 8.4 Excess Lime <br />6. Available Water >.10 .05-.10 <.OS Droughty <br />• Capacity (IN/1N) <br />7. Erosion Factor (K) <,37 >.37 --- Erodes Easily <br />8. Wind Erod. Group >3 >3 1, 2 Soil Blowing <br />9. USDA Texture --- SCL, CL Cb Too Clayey <br /> SICL SICb <br /> SC <br />10. USDA Texture --- LCOS, LS COS, S, 70o Sandy <br /> SL, LFS, LVFS FS, VFS <br />11. Coarse Frag. (WT PCT) <br /> 3-10 in. (7.6-25.4 cm) <15 15-35 >35 Large Stones <br /> > 10 in. (725.4 cm.) <3 3-10 >10 Large Stones <br />aLayers with high potential acidity should be rated poor. <br />blf in kaolinitic family, rate one class better if experience confirms. <br />From National Soils Handbook, NSH - Part II 1403.6(a)1, 1976. <br />• <br />