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• percent of the herbaceous production standard with 90 percent statistical confidence. The following <br />weighted formula will be used to evaluate revegetation success fox herbaceous production: <br />(S$a) (xS~ + tea) (xMB) + (Aa) (xA) <br />x~V > .90 <br />Ta <br />with 90 percent statistical confidence <br />where: <br />xgBV =Average herbaceous production far tevegetated azea <br />SBa =Sagebrush type acreage, prP+r+n+sg surface azea <br />MBa =Mixed brush type acreage, prP*s+s+ng surface azea <br />Aa =Aspen type acreage, premising surface azea <br />xsB =Average reference azea herbaceous production - sagebmsh type <br />xhq$ =Average reference area herbaceous production -mired brush type <br />xA =Average reference azea herbaceous production -aspen type <br />Ta =Total of relative community type acreages, prPm;.+isg surface azea. <br />• Revegetation success for production, in the reclaimed mesic drainage type, will be evaluated by <br />comparing a weighted mean herbaceous production value determined from undisturbed portions of <br />the mesic drainage and improved pasture-subirrigated premise types. The areas previously occupied <br />by this latter type will be reclaimed to a mesic drainage type. The method of weighting and <br />comparison is similaz to that described under covet for the mesic drainage type. Herbaceous <br />production from the mesic drainage reclaumed areas will be compared ro the weighted mean value. <br />Reclamation success for herbaceous production shall be met when the value of the reclaimed azea is at <br />least 90 percent of the comparison standard with 90 percent statistical confidence. The following <br />weighting formula will be used. <br />xREV > .90 (~a)(xMD) + ~Sa)(xIPS) <br />Ta <br />• with 90 percent statistical confidence <br />where: <br />PR-02 39 Revised 01/06 <br />