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based on 83% original extent of Mountain Brush and 17% original extent of Sagebrush). <br />Only species density by vascular plants are included. Lifeforms used include: <br />Annual /biennial forbs <br />Annual grasses <br />Perennial forbs <br />Perennial cool season grasses <br />If the index of similarity between the species density within the specified lifeforms of the reclaimed and <br />reference areas exceeds 63 %, then Test C is passed. <br />Alternative Test D): Native Species Presence Assessment <br />The third alternative assessment of the species diversity of reclaimed lands makes direct reference to the <br />presence of native western North American plant species in reclaimed areas. <br />Total cumulative # of native species* _> avg. reference area native species density (# species / 100 <br />sq.m.) <br />*In the cumulative presence data from 2 m x 50 m samples associated with the collection of a <br />statistically adequate sample of the reclaimed area and including alfalfa and /or cicer milkvetch, which <br />have often been included in seed mixes as nitrogen— fixers, due to the lack of suitable and available native <br />nitrogen- fixers. <br />If the total cumulative number of native species in the reclamation sampling exceeds the average number <br />of native species per 100 sq.m. in the weighted average of the reference area sampling, then Test D is <br />passed. <br />Woody Plant Density Evaluation <br />The location of woody plant "Concentration Areas" (high density) in BRB -5 were documented by field <br />mapping and assisted by aerial photography (Routt County DOQQ 2009) in the summer of 2010. During <br />the mapping, "High" density was reserved for those areas apparently (visually) greater than or equal to <br />1000 shrubs per acre (one quarter shrub per sq.m.; 25 shrubs per 100 sq.m.). All other portions of the <br />BRB -5 were labeled as "Background" density. <br />Quantitative density data from fifty randomly located samples within the mapped woody plant <br />10 <br />