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Revised 1/4/80 <br /> <br />Section 816.116 (a) Continued. <br /> A = X1 Y2 <br /> x T1 <br />Where: /1 = the value which much be equalled or to within a minimum <br />x of 90% of this v alue before it can be demonstrated that <br /> the land has bee n reclaimed. This proportional equation <br /> compensat es for the variations between sampling years; <br />Xl = percent c over or productivity from premine affected <br /> area; <br />Yl = percent cover or productivity from premine reference <br />areas; <br />YZ = percent cover or productivity from postmine reference <br />areas; <br />If xZ (cover or productivity on reclaimed land) does not equal x , <br />then the following inequality must be met: <br />n <br />0 < xZ - x + Z 8 Sx2 + 5^ 2 <br />x <br />Where: z2 = cover or productivity on reclaimed area. <br />/_~ = reclamation standard. <br />X <br />Z 8 = Z statistic for 80% confidence = 0.84. <br />S_ Z = variance of xZ <br />xZ <br />S~ Z = estimated variance of _n calculated as: <br />X X <br />2 <br />S~ Xl S? + YZ SZ + 52 SZ <br />x Y2 y2 2 r yZ r <br />1 <br />2 <br />~ X <br />Where: St 1 S S <br /> _ <br />_2 X <br />1 y <br />+ <br />1 <br /> yl 2 2 <br /> xl yl <br />816-157 l~11 <br />