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INi'fd~DUCi'IC[~1 • Fevegetation success studies were initiated in D1ay, 1979 at Peabody Coal Company's Seneca II Mine reclamation plot located approximately 10 miles southeast of Hayden, Routt County, Colorado. The study azea encmrq~assed approximately 700 acres at elevations ranging from 6700 to 7600 ft. Much of the revegetation plot under investigation is on west-facing slopes averaging 10-208 in grade. The plot was seeded (prior to 1977) using hand- broadcast methods. The species seeded are listed in Table 1; however, no information is available on the percent species romposition of this mixture. Other mixes were used prior to 1975. Subsequent to.1977, a different seed mixture was used on the southern portion of the revegetation area (see DSap 1, Appendix A). These seeds wPSe planted using a combination of drilLux3 and hand-broadcast methods. The percent species oompositiot~ of the seed mixture is provided in Table 1. The objectives of this study included: • 1. Measurement of selected vegetation parameters that would provide meaningful insight into the current success of reclamation practices and furnish appropriate goals for future reclamation efforts at this and other revegetation plots. 2. Identification and measurement of vegetation or environmental situations on the revegetation plot such as areas of high soil selenium or noxious weeds that might endanger revegetation success. 3. Comparison of revegetation plot production, rover and species rompos- ition data with those obtained from adjacent native undisturbed sites sampled during vegetation baseline studies at the Seneca II bline. This amparison will provide a quantitative basis for both predicting current revegetation success and redirecting future reclamation efforts. This report will define the methodology employed during the course of this • study. Results are summarized in tabular form and discussed within the