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As are recommended in Rule 4.15.11(2) & (3), during field sampling for cover, at least 15 <br />samples (observational units) will be made at each site. For production sampling at least 30 <br />transects will be sampled from each area. Sample adequacy will be tested after 15 cover and <br />30 production samples are taken. Sampling may continue if necessary to reach sample <br />adequacy, or sampling may be terminated before sample adequacy is reached if an alternative <br />statistical method (approved by DRMS such as the reverse null test) can be used that does not <br />require demonstration of sample adequacy. A maximum sample size of 50 transects will be <br />used in all revegetation monitoring. Alternative procedures will require a minimum of 15 or 30 <br />transects, as detailed below. Because dry- weight production data will not be available until <br />samples are air -dried in the laboratory, sample adequacy will initially be calculated on fresh <br />weights of clipped material, then recalculated later for air -dried material. <br />Reclaimed area cover and production will be compared to a standard equal to the mean values <br />measured at the reference area by sampling, as described below. Revegetation will be <br />considered "successful' if the mean value for the reclaimed site can be demonstrated to equal <br />or exceed "Q" (Q =90% of the standard). One of the following four methods will be used to <br />compare mean values at reclaimed sites to Q, depending on the mean values and whether <br />sample adequacy was reached during sampling. <br />1) If sample adequacy exists at the reclaimed site and the reference area, and the reclaimed <br />site mean is equal to or greater than Q, no statistical comparison is necessary and revegetation <br />at the reclaimed site will be deemed successful for the parameter in question. This complies <br />with the provisions of DRMS Regulation 4.15.11(2)(a). <br />2) If sample adequacy exists at the reclaimed site and the reference area, and the mean value <br />at the reclaimed site is less than Q, a "standard null' one -sided t-test with alpha error probability <br />of 0.10 will be used, in conformance with DRMS Regulation 4.15.11(2)(b), using the general <br />form of the one -sided t-test as follows: <br />August 2013 PR -08 2.05.4(2)(e) - 32 <br />