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The (traditional) null hypothesis being tested would be that the bond release block mean (µ) was <br />• greater than or equal to 90% of the standard, stated as Ho: µ ? Q. If t,, was less than or equal to <br />the 1-tailed t table value for alpha error probability of 0.10, at (n-1) degrees of freedom, then Ho. <br />was not rejected, and revegetation was deemed successful. <br />Woody Plant Density <br />Although woody plant density is not a parameter of interest in Phase 11 bond release testing, data <br />were collected while in the field to assess/document progress toward the Phase 111 technical <br />standard. (General background density >_ 200 stems per acre). Shrub concentration areas such <br />as may be included in eventual bond release blocks are judged by a standard of 2000 stems per <br />acre. <br />Woody plant density sampling was undertaken in the area sampled for Phase II bond release but <br />not in the reference areas. Samples were collected along 50 m transects. All shrubs and <br />subshrubs with root crowns located within the boundaries of 2 X 50 m quadrats (belt transects) <br />were tallied according to species and life stage as either seedling, mature, or dead. The <br />presence of dead individuals was recorded but did not contribute to woody plant density <br />• calculations. <br />Climatic Data <br />Precipitation data were collected at the Seneca IIW Mine during the period 1990 through 2009. <br />For years 1982 through 1989, SCC provided precipitation data from the nearby Seneca II Mine. <br />Since the long-term average for the mine exists for only 25 years, the long-term average monthly <br />precipitation data from the NOAA administered Western Regional Climate Center (WRCC) for the <br />nearby town of Hayden (Station 053867) were used as an appropriate base for comparison. <br />Information on degree-days was based on temperature data from the met station 2 at the Seneca <br />IIW Mine. <br />RESULTS <br />Numerical data are found in Tables 1 through 11 of Appendix 1. Sample data from the 2009 <br />revegetation monitoring studies at the Seneca II W Mine are presented in Tables 1 through 7. <br />Sampling data are summarized in Table 8. Data on species density by lifeform are tabulated for <br />sampled areas in Table 9. Data on relative cover by lifeform are compiled in Table 10. Statistical <br />adequacy of sampling is reviewed in Table 11. The list of plant species observed during these <br />• studies (reclaimed and reference areas) is included as Table 12 in Appendix 2. Seed mixes used <br />in the reclamation areas are included for reference in Appendix 3. Photographs of representative <br />7