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4-83 <br />• Criteria are given for good, fair or poor sources of recon- <br />sttuction material (Table 4.7-1). A good rating means <br />vegetation is relatively easy to establish and maintain, <br />the surface is stable and resists erosion, and the recon- <br />structed soil has good potential productivity. Material <br />rated fair can be vegetated and stabilized by modifying one or <br />more properties. Top dressing with better material or <br />application of soil ammendments may be necessary for satis- <br />factory performance. Material rated poor has such severe <br />problems that revegetation and stabilization is very difficult <br />and costly. Top dressing with better material may be necessary <br />to establish and maintain vegetation (USDA, 1978). <br />• 4.7.5.2 Soil Chemistry and Physical Properties <br />Chemical and physical data for permit area soils were collected <br />to evaluate the soils as reconstruction material for disturbed <br />lands. Soil chemical and physical data from analysis by <br />F & L Labs are reported in the Appendix. SCS Soil Survey <br />Interpretation Records were also used in making the evaluations. <br />Soils were sampled by horizon and analyzed using standard <br />agricultural techniques. The parameters tested were paste <br />pH, electrical conductivityf moisture saturation percentage; <br />soluble sodium,~magnesium ahd calcium; SAR,~organic matter; <br />particle size distribution,~textural class, and boron The <br />techniques used (appendix) are those of USDA Handbook 60 <br />• (1954) and American Society of Agronomy Monograph #9 (Black, <br />1965) . <br />