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2013-06-28_PERMIT FILE - C1981008A
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2013-06-28_PERMIT FILE - C1981008A
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Last modified
8/24/2016 5:21:49 PM
Creation date
7/26/2013 10:59:46 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981008A
IBM Index Class Name
Permit File
Doc Date
6/28/2013
Doc Name
Revegetation
Section_Exhibit Name
Section 2.05.4(2)(e) Revegetation
Media Type
D
Archive
Yes
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_ x -Q <br />t ` s <br />Where: <br />X = Bond Release Block Sample Mean <br />Q = 90% of Standard <br />S_ = Standard error of mean [ s / , % n ] <br />z <br />S = Sample standard deviation <br />n = Sample size <br />t = Calculated t value <br />t = Table t value <br />The null hypothesis being tested is that the mean value at the reclaimed site is less than or equal <br />to Q, with 80% statistical confidence. If t is greater than the 1- tailed t table value for alpha error <br />probability of 0.20, at n -1 degrees of freedom (infinite degrees of freedom may be used if n > 30), <br />is then the null hypothesis is rejected, and revegetation is deemed successful for the parameter in <br />question. <br />4) If sample adequacy is not achieved in the reference area (regardless of whether sample <br />adequacy is achieved in the reclaimed area), success will be demonstrated by use of the two - <br />sample "reverse null' t -test with Satterthwaite approximation of standard error and degrees of <br />freedom. The test can be used if the following 2 conditions are met: 1) a minimum of 30 sample <br />observations are taken in the reclaimed area and also in the reference area, and 2) the reclaimed <br />area sample mean is greater than Q. <br />To use this test, first the Satterthwaite standard error is calculated as <br />• <br />(Revised: PR -06) 2.05.4(2)(e) - 35 <br />�r <br />
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