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<br />r- <br />TABLE 41 <br />WYOMING DEQ GUIDELINE FOR SUITABILITY <br />RATINGS FOR SOILS AS SOURCES OF TOPSOILING MATERIAL <br /> <br />Soil Characteristic Good.. ....Fair... Poor. Unsuitable. <br />pH 1 6.0 - 8.4 5.5 - 6.0 5.0 - 5.5 Under 5.0 <br /> 8.4 - 8.8 8.8 - 9.0 Over 9.0 <br />Conductivity (Ec) Under 4 4 - 8 8 -16 Over 16 <br />mmhos/cm @ 25° <br />Saturation Percent- 25 - 80 Over 80 <br />age (S P) Under 25 <br /> <br />Texture class sl, 1, sil, cl, sicl, c, sic, s <br /> scl sc, is <br />Sodium Adsorption Under 6 6 -10 10 -15 Over 15 <br />Ratio (SAR) <br />2 <br />Calcium Carbonate none -slight moderate high <br /> (0 - 15X) (15 - 30Y,) (Over 30X) <br />Moist Conaistence friable loose, firm very firm <br />Dry Consistence loose, soft alight hard, very hard <br /> hard <br />Selenium 3 2 ppm or less greater than 2 ppm <br />4 <br />Boron S.ppm or.less. greater. than.5.ppm.... <br /> 1 <br /> Saturated Soil Paste, U.S.D.A. Handbook 60, pg. 102. <br /> 2 <br /> Effervescence with acid or CaC03 equivalent, U.S.D.A. Handbook 60, pg. 105. <br /> 3 <br /> Hot water soluble, A.S.A. Mono 119, Part 2 <br />P8s. <br />1122-23. <br /> 4 <br /> Hot water soluble A.S.A. Mono ll9 Part 2 <br />pgs. <br />1062-63. <br /> 5 <br /> Establishment of vegetation on soils having any of these extreme conditions <br /> would be severely restricted. <br />