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WOODY PLANT DENSITY <br />For purposes of illustration, woody plant density at the Seneca II Mine is evaluated in this <br />document using a technical standard of 1000 shrubs per acre. <br />Climatic Data <br />SCC provided precipitation data for the Seneca II Mine for the period of January 1982 through <br />September 2002. Since the long-term average for the mine exists for only 20 years, the long- <br />term average monthly precipitation data from the Western Regional Climate Center (WRCC) for <br />the nearby town of Hayden was used as an appropriate base for comparison. SCC also provided <br />temperature data for the Seneca IIW Mine in 2002; these data were used for temperature <br />analysis on the Seneca II Mine. <br />RESULTS <br />Sample data from the 2002 revegetation monitoring studies at the Seneca II Mine are presented <br />in Tables 1 through 19, contained in Appendix 1. Sampling data are summarized in Table 20. <br />Data on species density by lifeform are tabulated for sampled areas in Table 21. Data on relative <br />cover by lifeform are compiled in Table 22. Statistical adequacy of sampling is reviewed in Table <br />23. The list of plant species observed during these studies in reclaimed and reference areas are <br />. present in Appendix 2. Seed mixes applied on areas revegetated prior to 1981 and in years 1981 <br />through 2000 are included in Appendix 3. Photographs of representative samples in the <br />reclaimed areas sampled in 2002, as well as photographs of the Alkali Sagebrush, Mountain <br />Brush, and Sagebrush reference areas are included in Appendix 4. Graphic depiction of <br />vegetation and climate data are presented in Figures 1 through 10 of this report. <br />In the cover descriptions below, species listed as "also present" were not encountered during <br />point-intercept sampling but were present within one meter of either side of the 50m sample <br />transect line. Cover percentages referred to in the following results as "percent of total vegetation <br />cover' are relative, all-hit vegetation values. Percentages are rounded to facilitate discussion of <br />the results of vegetation monitoring in 2002. <br /> <br />