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C.L -t~ Cs ~ <br /> Jn <br />Hvpothesis Testing for Phase II Bond Release Area <br />Percent absolute (foliar) first hif herbaceous vegetation cover of the Phase II Bond Release Area <br />90% of the weighted absolute foliar all- hit herbaceous vegetation cover from the reference <br />areas (weighted based on the following extents of types in the pre-mining area to be disturbed as <br />shown in the table below). <br />Vegetation Type % of Pre-mine <br />Sagebrush/Snowberry 31.3 <br />Mountain Brush 34.5 <br />Aspen Woodland 11.0 <br />Steep Mountain Brush 12.8 <br />Alkali Sage.NVest. Whtgrs. 10.4 <br />These reference areas were sampled to adequacy to establish the standards for comparison <br />against reclaimed area values. If after 15 cover samples have been completed in Phase II Bond <br />Release Area, sample adequacy had been achieved and the reclamation area mean total <br />allowable herbaceous foliar cover were above 90% of the reference area-derived standard, an <br />affirmative indication of reclamation cover success was to be asserted. <br />If: The mean allowable herbaceous cover of an adequate sample from Phase II Bond Release <br />Area was less than 90% of the cover standard (see above), then gone-sample t-test was to be <br />made in the following form to test the hypothesis of reclamation success for cover (CDMG rules, <br />4.15.11 (2)(b)): <br />t _Qx <br />S- <br />x <br />Where: <br />x =Bond Release Block Sample Mean <br />Q = 90% of Standard <br />S- =Standard error of mean ~ s / y n j <br />x <br />S =Sample standard deviation <br />5 <br />