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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 />