Laserfiche WebLink
• (portion of the extended) reference area will be used for cover comparisons in these reclaimed <br />lowland or drainage azeas. Total all hit herbaceous vegetation cover over £or these reclaimed azeas will <br />be considered acceptable if total "aA-hit" herbaceous vegetation covet is not less than 90 percent of <br />the cover as determined from the mesic drainage reference azea with 90 percent statistical confidence. <br />Cover will not be evaluated for the cropland portion of the reclaimed haul road. This is based on <br />Rule 4.15.9, which states that success of reclamation for cropland will be based on production only. <br />Production <br />Reclamation success for production in the II-W permit azea will be evaluated by comparing <br />herbaceous production in the reclaimed areas to the weighted herbaceous production value <br />determined from sampling of the extended reference azea. <br />Herbaceous pzoducdon will be estimated by clipping the current year's above ground herbaceous <br />biomass in randomly located 0.5 sq.m. sample plots. Fencing or exclosutes will be used to exclude <br />livestock prior to sampling, where necessary. Herbaceous production from the reclaimed lands being <br />• evaluated for reclamation success will be compazed to the weighted production value determined <br />from the extended reference azea vegetation types described under cover and their relative azeal extent <br />in the premining surface azea. The weighted herbaceous production value will be determined (see <br />formula below) by taking the herbaceous production value for each reference area type and <br />multiplying by the percentage of the premising surface area occupied by the type. These numbers will <br />be added to auive at the overall weighted value. <br />Xiev'~- ~.9~ ((A+) (X•) + (Ab)(Xb) 'F (Asmb) (Xmb) + (~)(~) + (~) (x~)) <br />D~1ltIC.' <br />X,~, = Average total herbaceous production for revegetated azea <br />A, = Aspen type percentage of the preen+ning surface to be affected by ttilning (11.0%) <br />Ab = Mountain Brush type percentage of the pretninntg surface to be affected by <br /> mining (34.5%) <br />A,mb = Steep mountain brush type percentage of the premuting surface to be affected <br /> by mining (12.8%) <br />AS = Sagebrush/Snowbetry type percentage of the prenutung surface to be affected <br />• by mining (31.3%) <br />A,,.o, = Western Wheatgrass/Alkali Sagebrush type percentage of the premising surface <br />ra_sn en n.,.,;~P,t n,unc <br />