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<br />Cover For all reclaimed. 11-W areas, successful revegetation for the parameter of cover will ba , <br />evaluated as follows. Cover data: will be collected from the abovefour described vegetation . <br />' types within the designated extended reference a`rea,~ The. herbaceous cover component fors <br />each type will be' multiplied by the acreages relative to each type in the premining surface <br />area. Theproducts for each type 'will be, added and then divided by the acreage total 'of the <br />~refererice area types in the premining•surface aiea. ~ The resulting weighted herbaceous cover ~ ..' <br />~. ~ value. will~be multiplied by_a factor.of two~in order to determine the actual value to be usedas 2 .. ~ ~ <br />the cover comparison standard. The; cover standard will then~~be compared to the average <br />vegetation cover determined; from the revegetation areas subject to hbnd release; For <br />. vegetative cover, the.revegetated area shall be~considered~acceptahle if it~is,not less than 90 <br />.~, percent of the cover standard with'90 percent statistical. confidence. ;~, <br />The weighting ~ formula to be used' in determining successful' revegetation for cover in• the <br />' reclaimed mine area is.as follows: ~ ~ ~ ~ ~ ~. ~ ~~ <br />' ~ ~ ~ xrev ~~_ .90 12x IAallxal + IAbllxbl + (Asllxsl + IAwwllzty~,"II <br /> <br />with 90 percent statistical confidence ~ ~ ~ ~ . ~ ~ ~ ~ ~ . <br />• <br />. .~ _. <br />.. ~ ~ ~ ~ 39a • ~ ~ ~ ~ ~ .. Revised 1 /99 ' , . <br />