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• percent of the cvver standard with 90 percent statistical confidence. The general equation to be used in <br />comparing successful revegetation for cover is as follows: <br />xrevc _ .90 (2 (.83x~ + 2 (.17xs~) with 90% statistical confidence <br />where: xrevc =mean herbaceous cover -revegetated area <br />xbc =mean herbaceous cover -mountain brush reference area <br />xsc =mean herbaceous cover • sagebrush reference area <br />Cover data will be collected using the point-intercep! method. Sample adequacy will be me! for both <br />redaimed and reference areas. All sample sites will be randomly located. <br />Production. Successful revegetation for production in all redaimed areas will be based on herbaceous <br />production (4.15.8(4)). The mean herbaceous production in the revegetated areas wilt be compared to the <br />weighted mean herbaceous production determined from the mountain shrub and sagebrush reference <br />areas. The weighting will be as described in the earlier discussion on reference areas. <br />Herbaceous production will be collected by dipping the cement years above ground hefiaceous biomass <br />• from randomly located one-haK square meter or one square meter sample plats in the revegetated and <br />reference areas. Fendng or exdosures will be used to exdude livestock prior to sampling, where <br />necessary. The comparison standard for production will be determined by taking the mean herbaceous <br />production value for each of the two reference areas, weighting each value as previously described, and <br />combining the weighted values to determine the standard. <br />The celwlated production standard will be compared to the mean herbaceous production value for the <br />revegetated areas. For production, the revegetated areas shall be considered acceptable if it is not less <br />than 90 percent of the production standard with 90 percent statistical confidence. The general equation for <br />production related success comparisons is as follows: <br />xrevp _ .90 ((.83 xb~(.17 xsp)) with 90% statistical confidence <br />where: xfeVp =mean herbaceous production -revegetated area <br />xbp =mean herbaceous protlucfion -mountain brush reference area <br />xsp =mean herbaceous production -sagebrush reference area <br />Production data will be collected from randomly located plots. Sampling will be to adequacy or to an upper <br />• limit of samples determined in consultation with the Division. <br />1333 Revised 0115/93 <br />