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r ~ <br />U <br /> <br />16. Similar to USDI-OSMRE (1985a), USDA (1979) proposes greater than 60% clay. <br />17. Recommended by MDSL (1983), WDEQ (1985), and USDI-OSMRE (1985a). Schafer <br />(1979, 1980) proposes 8. The lower limit recommended by Barth et al. (1981). <br />18. The actual maximum acceptable molybdenum concentration will depend upon the plant <br />species proposed in the revegetation plan seed mix and their potential for molybdenum <br />accumulation. The depth of replaced topsoil must also be evaluated. <br />19. Recmmended by MDSL (1983). Barth et al. (1981) and Sutton et al. (1981) recommend <br />2.0. <br />20. Presented by Peabody (1987) from data extrapolated from Neuman and Munshower <br />(1983). A value of 2 assumes 100% legumes with 2 feet of topsoil while a value of 8 assumes <br />100% grasses with 2 feet of topsoil. An upper limit of 1.0 is proposed by MDSL (1983) and <br />WDEQ (1985). A limit of 0.85 is proposed by Neuman and Munshower (1983) for a site with <br />no topsoil. <br />21. Proposed by MDSL (1983) and WDEQ (1985). <br />22. Recommended by USDI-OSMRE (1985a); Schafer (1979, 1980) proposed 2.0. <br />23. Proposed by WDEQ (1985). The lower limit proposed by Sutton et al. (1981). <br />24. Recommended by Singleton and Barker (1980). <br />25. This value proposed by Barth et al. (1981). <br />26. This value is supported by WDEQ (1985), Smith (1974), and Sutton et al. (1981). Units <br />are tons of CaCO3 equivalent/1000 tons. <br />Revised 9/99 2.04.6-27 <br />