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I . Table 4.7-1 <br />Soil Reconstruction Material for Drastically Disturbed Areas <br />Limits Restrictive <br />Property Good Fair Poor Feature <br />i • <br />1. Sodium Adsorption <br />Ratio (SAR) <br />2. Salinity (MMHOS/CM) <br />3. Toxic Materials <br />4. Soil Reaction (pH)a <br />5. Soil Reaction (pH> <br />6. Available Water <br />Capacity (IN/IN) <br />7. Erosion Factor (K) <br />8. Wind Erod. Group <br />9. USDA Texture <br />10. USDA Texture <br /><5 5-12 12 Excess Sodium <br /><8 8-16 16 Excess Salt <br />Low Medium High Toxicity <br />5.6-7.8 4.5-5.5 <4.5 Too Acid <br /><7.9 7.9-8.4 8.4 Excess Lime <br />>.10 .05-.10 <.05 Droughty <br /><.37 >.37 --- Erodes Easily <br />>3 >3 1, 2 Soil Blowing <br />--- SCL, CL Cb Too Clayey <br /> SICL SICb <br /> SC <br />--- LCOS, LS COS, S, Too 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. (<25.4 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 [403.6(a)], 1978. <br /> <br />