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eabody Sage Creek Mine SL -3 Phase N Bond Release Request July 2014 would not be as affected. The previously discussed determination method for arriving at a easonable allowable first hit herbaceous cover value for the mountain brush reference area ddresses this and provides a technically valid resolution. The sagebrush reference area, without the structural characteristics of the mountain brush, does not have this issue and first hit herbaceous cover sample adequacy with reasonable sample sizes is attainable. Calculation of 90 percent of the cover performance standard determined from 2010 and 2011 sampling is demonstrated below based on the following reference area data that is weight veraged. The weighting contribution is mountain brush 83% and sagebrush 17 %. 010 Cover Success Evaluation 010 Mountain Brush Reference Area allowable first hit herbaceous cover 12.8 x 2 = 25.6% 2010 Sagebrush Reference Area allowable first hit herbaceous cover 44.7 x 2 = 89.4% 0 percent of the Cover Standard = 0.90 0.83 25.6 + 0.17 89.4 = 32.8% p [ ( ) ( l The 2010 Phase III bond release BRB PSCM -1 sampling at thirty (30) random locations resulted an allowable first hit herbaceous cover value of 54.9% which exceeds the 90 percent cover tandard value of 32.8 %. 2011 Cover Success Evaluation F011 Mountain Brush Reference Area allowable first hit herbaceous cover 20.95 x 2 = 41.9% 011 Sagebrush Reference Area allowable first hit herbaceous cover 44.4 x 2 = 88.8% §0 percent of the Cover Standard = 0.90 [0.83(41.9) + 0.17(88.8] = 44.9% The 2011 Phase III bond release BRB PSCM -1 sampling at thirty (30) random locations resulted in an allowable first hit herbaceous cover value of 55.8% which exceeds the 90 percent cover standard value of 44.9 %. roduction. The PSCM herbaceous production standard and success evaluation is based on a eight averaged value (based on the two primary premine vegetation type contributions to total 10