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production for the BRB was successful for 2011. Although sample adequacy was not achieved on the <br />BRB in 2011, the reverse null calculation also confirms that the BRB allowable annual herbaceous <br />production was successful for 2011. <br />Species Diversity <br />PSCM uses four different tests to determine species diversity success. The first test A, is mandatory, <br />and requires that no single plant species may exceed 60% relative cover. Two of the remaining tests, <br />B, C, or D must be met to achieve diversity success. For 2010 vegetation data, the BRB was <br />successful for tests A, C, and D. The Division finds the 2010 data successful for species diversity. <br />The 2011 vegetation data for the BRB was successful for tests A, C, and D. The Division finds the <br />2011 data successful for species diversity. <br />Woody Plant Density <br />Reclamation success for the establishment of woody plant species will be successful for the PSCM <br />when two criteria are met. The first criterion for determination of woody plant success requires 90% <br />of a minimum of 200 stems per acre in the total BRB, or background area. The second criterion <br />requires that at least 5% of the BRB contain a concentration of 90% of 2000 stems per acre. PSCM <br />identified "concentrated" shrub areas using aerial photography collected in 2009. Reclaimed area <br />within the BRB, but outside of the concentrated shrub areas was considered "background ". <br />The 2010 woody stem density sampling in background areas resulted in 805.3 stems per acre. <br />Woody stem density did not achieve sample adequacy in 2010, but PSCM collected a minimum of 30 <br />sample transects. PSCM provided reverse -null demonstration to validate that the sample value 805.3 <br />woody stems per acre surpassed the required 90 stems per acre in the background reclamation area in <br />accordance with Rule 4.15.11(2)(c). PSCM measured 2092.2 stems per acre in concentrated shrub <br />areas within BRB in 2010. The concentrated shrub areas comprised 229.2 acres, or 22.3% of BRB <br />acreage. Woody stem density data achieved sample adequacy in the concentrated shrub areas in <br />2010, and PSCM collected a minimum of 50 transects. The Division finds the data and calculations <br />acceptable, and finds the woody stem density establishment successful for 2010 in the BRB. <br />The 2011 results for the background areas equaled 732.5 stems per acre. Woody stem density did not <br />achieve sample adequacy in 2011, but PSCM collected a minimum of 30 sample transects. PSCM <br />provided reverse -null calculations to validate that the sample value of 732.5 woody stems per acre <br />surpassed the required 90 stems per acre in the "background" reclamation area. PSCM measured <br />2703.3 stems per acre in concentrated shrub areas within BRB in 2011. The concentrated shrub areas <br />comprised 229.2 acres, or 22.3% of the BRB acreage. Woody stem density did not achieve sample <br />adequacy in the concentrated shrub areas in 2012, but PSCM collected a minimum of 50 transects, <br />and conducted a reverse -null calculation to validate the 2011 concentrated shrub success. The <br />Division fords the data and calculations acceptable, and fords the woody stem density establishment <br />successful for 2011 in the BRB. <br />Post Mining Land Use <br />The post- mining land use for the Peabody Sage Creek Mine is rangeland for enhanced domestic <br />