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d = 0.1 (level of precision for estimate of the mean to be within 10 percent of the actual <br />mean), and <br />x = sample mean. <br />Point - intercept data will be used to calculate the following parameters for each community type <br />in potentially affected areas and reference areas: cover (frequency), relative cover, and diversity. <br />The percent total vegetative cover calculation is as follows: <br />% total vegetative cover = # hits on vegetation x 100 <br />Total # of Points <br />The composition of plant species in each area will be evaluated using the vegetative cover data. <br />The following calculation will be used to determine the relative cover of each species per area: <br />% relative cover of species x = % Cover of Species x <br />% Total Veg. cover <br />Species Diversity <br />Species diversity data will be gathered from the point - intercept cover data collection. Species <br />diversity includes the total number of species hit along the transect. A species list of those plants <br />observed during the field investigation will be developed. <br />Shrub and Tree Density <br />In conjunction with the collection of cover data on the disturbed and reference areas, a 5 meter <br />wide belt transect will be established running the entire length of the 50 meter point- intercept <br />cover transect. Smaller or larger transects may be employed within each reclaimed area <br />depending on the area to be sampled and specific sampling parameter goals. Woody plant <br />density will be determined by counting each individual woody stem within the 5 x 50 meter belt <br />transect. Woody plant density values will be presented as woody plant stems per transect and the <br />extrapolated value of woody plant stems per acre. Plants that are prone to suckering (e.g. <br />Gamble's oak and mountain mahogany) will be sampled by counting each individual woody <br />stem that falls within the belt transect. This method is consistent with the baseline collection of <br />woody plant densities in which individual stems were counted, regardless if multiple stems <br />originated from an individual root crown. <br />Shrub sampling will be conducted <br />TR -17 2.05 -73 Revised 08/10/12 <br />