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Section 816.112 Continued. (d) The species meet the requirements of applicable State and Federal seed or introduced species statutes and are not poisonous or noxious. The proposed seed mixtures for the Kerr Mine Area and the Kerr Tipple Area include some introduced species for which regulatory approval is required. Specifically, Kerr Coal seeks regulatory approval to plant the following introduced plant species at the Kerr Mine Area: Russian wildrye, dryland alfalfa, yellow sweetclover, and small Burnet. In addition, Kerr Coal seeks regulatory approval to plant the following introduced plant species at the Kerr Tipple Area: intermediate, pubescent and tall wheatgrasses, meadow foxtail, timothy, and titer milkvetch. In support of it request, Kerr Coal presents the following information regarding desirability of the • introduced species, necessity of the species to aid in erosion control, compatibility, and compliance with State and Federal statutes. Desirability of Introduced Species. During the past 20 years, numerous species of grasses and fortis have been evaluated for their desirability for planting in a sagebrush-type environment such as exists at the Kerr Mine Area and the Kerr Tipple Area. All introduced species proposed by Kerr Coal have been found in these studies to be desirable in reestablishing rangeland. Specifically, Hull, et al. (1962) recommended for reseeding in the arid sagebrush type desert, pubescent and intermediate wheatgrasses, and Russian wild rye. Asa result of a study in northwest Colorado, the Colorado State University (1974) recommended planting desert wheatgrass, tall wheatgrass, intermediate and pubescent wheatgrass. Similarly, after four growing seasons ont est plots in the sagebrush-type environment in the Piceance Basin, Sims (1977) reported the three top producing ,. species were all introduced and included: Siberian wheatgrass, _ crested wheatgrass and pubescent wheatgrass. 816-146 aR Revised -October, 1990