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Final Revegetation Success Standards <br />Final revegetation success will be judged for vegetative cover and herbaceous production <br />through the use of the approved predictive equations for total vegetation cover and total <br />herbaceous production. Species composition will be evaluated using the approved <br />success standard. <br />Quantitative comparisons for vegetation cover and herbaceous production will be made <br />using the Student's t-test or Confidence Interval test. Reclaimed area cover and <br />herbaceous production values will be evaluated for statistical equality to the values from <br />the respective predictive equations if the reclaimed area values do not equal or exceed the <br />predictive values. Species composition will be judged on meeting the species <br />composition standard. <br />Total vegetation cover. Reclaimed areas will be considered successfully reclaimed if the <br />total vegetation cover on the reclaimed area(s) is not less than 90 percent of the the total <br />vegetation cover value from the equation:yr-- 0.0127x3 + 0.2115x2 + 2.1772x (where x is the <br />cumulative September - July precipitation at the mine) with 90 percent statistical <br />confidence using a one -tailed Student's t or Confidence Interval test. <br />Herbaceous production. Reclaimed areas will be considered successfully reclaimed if the <br />total herbaceous production on the reclaimed area(s) is not lysp Pan 90 percent of the total <br />herbaceous production value from the equation: y = 0.4666x • (where x is the cumulative <br />September - July precipitation at the mine) with 90 percent statistical confidence using a one - <br />tailed Student's t or Confidence Interval test. <br />Woody 21ant density.There is no woody plant density revegetation success standard. <br />Species composition.Reclaimed areas will be considered successfully reclaimed if the <br />species composition on any reclaimed area is such that there are at least four perennial <br />species of which three are warm seasonperennial grasses and one is cool season <br />perennial grass. No one component of the above species should comprise greater than <br />40% relative importance nor less than 3% relative importance. Relative importance will <br />be measured by calculating relative cover of the revegetation species. Vegetation species <br />which may be used in the calculation of species composition may be any plant species <br />not defined as a noxious or prohibited plant species, and may be native or introduced. <br />116b 06/14 <br />