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• <br />• <br />• <br />evaluation should take into account the "total system". Interactive parameters may either <br />nullify or verify the significance of a potential problem. <br />2. This value is supported by MDSL (1983) and USDI-OSMRE (1985a). <br />3. This value is supported by USDA (1979), MDSL (1983), and USDI-BLM (1977). <br />4. The low limit of this range is supported by USDA (1979) and USDA (1983). USDI-BLM (1977 ) <br />recommends a lower tolerance limit of 3.5 whereas WDEO (1985) suggests 5.0. <br />5. The upper tolerance limit of this range is recommended by USDA (1979) and WDEO (1985 ) <br />whereas USDI-OSMRE (198Sa) proposes 8.8. <br />6. The actual minimum or maximum acceptable salinity level will depend on the plant species <br />proposed in the revegetation plan, the potential for upward salt movement, and the particle <br />size. <br />7. The lower limit of 8 is recommended by Barrett et al. (1980), WDEO (1985), USDA <br />(1983),USDI-OSMRE(1985a),Schafer (1979, 1980), and USDI-BLM (1977). BothMDSL(1983)and <br />USDA(1979) indicate lower limits of 4 and 6 may be essential for certain plant species. The upper <br />limit of 12 is proposed by WDEO (1985) and USDI-OSMRE (1985a), whereas USDA (1983) and <br />USDI-BLM (1977) recommend 16, USDA (1979) proposes 9, while MDSL (1983) and Schafer <br />(1979, 1980) specify 8. <br />8. Thesevalues are recommended by USDI-OSMRE (1985a), MDSL (1983), and WDEO (1965) <br />the exception that WDEO (1985) proposes an upper limit of 80. <br />9. Specific level depends upon clay mineralogy, soil texture, and saturation percentage acoort~rg <br />to Dollhopf et al. (1985) and MDSL (1983). <br />10. These values are similar to those recommended by Barrett et al. (1980), MDSL (1983), W D E O <br />(1985), USDA (1983), USDI-OSMRE (1985a), Schafer (1979, 1980), and 1~F8_M <br />(1977). <br />11. Proposed by USDI-OSMRE (1985a). <br />12. These values are similar to those recommended by Barrett et al. (1980), MDSL (1983), Schafer <br />(1979, 1980), USDI-OSMRE (1985a), and USDI-BLM (1977). USDA (1979) proposes 12. <br />13. Proposed by USDI-OSMRE (1985a). <br />REVISED Auguet 2006 <br />2.04.6-31 <br />