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Revegetation success for cover in the reclaimed portions of the haul road corridor <br />will be demonstrated by comparing the all hit herbaceous cover in the haul road <br />corridor reference area to the all hit total vegetation cover of the reclaimed lands <br />within the haul road corridor. The vegetation cover in the reclaimed area haul <br />road corridor will be considered successful if it is not less than 90 percent of the <br />cover standard with 90 percent statistical confidence. <br />Production <br />Reclamation success for production in the shrub grassland reclaimed areas will be <br />evaluated by comparing herbaceous production in the reclaimed area to the <br />weighted average herbaceous production in the extended reference area. <br />Herbaceous production will be estimated by clipping the current year's above <br />ground biomass in randomly located %2 m2 to 1 m sample plots. Production will <br />not be evaluated within the concentrated tree and shrub establishment sites, due to <br />the emphasis on woody plant establishment and concern with competition from <br />herbaceous vegetation. These locations are intended to establish "islands" of <br />higher shrub and tree densities and are of small areal extent. <br />Herbaceous production in the reclaimed mesic drainage type will be determined <br />by comparison with the weighted mean herbaceous production of the mesic <br />drainage and improved pasture-subirrigated vegetation types. <br />Production standard of the permanently reclaimed portions of the haul road <br />corridor will be based on average herbaceous production in the haul road corridor <br />reference area. <br />Species Diversity <br />The proposed assessment of adequately diverse vegetational composition at the <br />Yoast Mine will take the form of the following four tests; success is demonstrated <br />by passing at least two of the three Alternative Tests (B, C, or D) plus the <br />Mandatory Test (A). The tests are described in detail in Tab 22, Revegetation <br />Plan. <br />Mandatory Test A: No Overwhelming Dominant <br />No single plant species may exceed 60% relative cover. <br />Alternative Test B: Total Species Density Test <br />This overall reclamation diversity standard will be judged <br />based on the species density values observed along with <br />cover sampling in the 100 sq.m. sample plots that <br />accompany the standard cover/species presence samples, as <br />compared to the species density within the reference area. <br />Alternative Test C. Assessment of the Distribution of <br />Species Abundance among Lifeforms in Comparison to the <br />Reference Areas <br />Yoast Mine 35 December 15, 2010