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Calculation of 90% of the area weighted cover performance standard appropriate for 2016 sampling is <br /> demonstrated below: <br /> Aspen Reference Area Allowable All-Hit Herbaceous Cover' = 74.6% <br /> Mountain Brush Reference Area Allowable All-Hit Herbaceous Cover'= 44.9% <br /> Sagebrush Reference Area Allowable All-Hit Herbaceous Cover' = 36.4% <br /> Steep Mountain Brush Reference Area Allowable All-Hit Herbaceous Cover' = 28 2% <br /> Herbaceous cover adjusted by subtracting noxious weeds and annual/biennial plant cover in excess of 10%of the remainder. <br /> 90% of the Cover Standard = <br /> 0.90* [0.244(74.6%) +0.489(44.9%) +0.24(36.4%) +0.027(28.2%)] = 44.7% <br /> The mean allowable all-hit herbaceous vegetation cover sampled in the BRB-2a was 48.4%, exceeding <br /> 44.7%, which is 90% of the area-weighted cover performance standard (see also Figure B-1 a, Table B-1). <br /> Thus, successful revegetation with respect to allowable all-hit herbaceous cover is demonstrated. <br /> BRB-3 Cover <br /> As described above, a direct comparison of reclaimed area mean to standard is allowed under DRMS <br /> rules (CDMG 2005 revised rule, 4.15.11 (2)(a)) when sample adequacy has been demonstrated for the <br /> reclaimed and reference areas, each with a minimum of 15 samples. Sample adequacy based on <br /> allowable herbaceous all-hit cover values was achieved for BRB-3 and the reference area, each with a <br /> minimum of 15 samples. Thus, a direct comparison will be used to determine success. <br /> The mean allowable all-hit herbaceous vegetation cover sampled in BRB-3 was 48.2%, exceeding 24.7%, <br /> which is 90% of the cover performance standard (see also Figure B-1 a, Table B-1). Thus, successful <br /> revegetation with respect to allowable all-hit herbaceous cover is demonstrated. <br /> SPECIES DIVERSITY AND COMPOSITION <br /> BRB-2a Diversity Tests <br /> With regard to Mandatory Test A, that no single species comprise greater than 60% relative cover in the <br /> 2016 BRB-2a, Table G-1 shows that the most abundant single species, alfalfa (Medicago sativa), was <br /> 15.7% relative all-hit cover, well below the 60% threshold of concern. <br /> Hence Mandatory Test A is Passed for BRB-2a data. <br /> 17 <br />