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• Herbaceous production will be measured in the reference area and GCCC reclaimed <br />area using quantitative methods acceptable to CDMG. Statistical sample adequacy will <br />be demonstrated. Revegetation on the Grassy Creek Coal parcel will be considered <br />successful when the reclaimed area total herbaceous production is within 90 percent of <br />the total herbaceous production of the reference area with 90 percent statistical <br />confidence. Herbaceous production will not be required for evaluation of the Eilts <br />parcel revegetation success. <br />Determination of species diversity on the GCCC parcel will be based on vegetation <br />relative cover data. Revegetation will be considered successful if the data demonstrate <br />the presence of at least five perennial species with relative importance of at least three <br />percent, with all of the species combined not exceeding 75 percent relative importance, <br />nor any one of these species exceeding 40 percent relative importance. <br />r~ <br />L <br /> <br />Technical Revision 20 -335- Revised 6/96 <br />