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• tz SZ <br />Nm,~ <br />d2 x2 <br />where: <br />t= one-tailed t-value with n-1 degrees of freedom <br />sZ =sample variance (based on s~.,) <br />d = 0.1 (level of precision or desired detectable reduction) <br />~: ~ x =sample mean <br />C/lmatlc Data <br />Precipitation data from the nearby Seneca II Mine for the period of January <br />1992 through September 1998 were provided by SCC. Since the long-term <br />average for the mine exists for a relatively short period of time, the long term <br />average monthly precipitation data from the National Oceanic and Atmospheric <br />Administration (NOAA) far the nearby town of Hayden was used as an <br />appropriate base.for comparison. Information on degree-days was also <br />derived from the NOAA records at Hayden. <br />RESULTS <br />Data from the 1998 revegetation monitoring studies at the Seneca II-W Mine <br />are presented in Tables 1 through 7 contained in Appendix 1. The list of plant <br />species observed during these studies (reclaimed and reference areas) are <br />6 <br />