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• Total Live Vegetation Cover equal to or greater than thirty (30) percent. <br />• Total Herbaceous Production (annual) equal to or greater than 300 pounds per acre <br />(dry weight) . <br />• Species Composition comprising three (3) cool season perennial graminoids and <br />one (1) perennial forb, with no qualifying single species accounting for more than <br />forty (40) or less than one (1) percent relative cover. <br />• There will be no woody plant density revegetation success criterion in accordance <br />with the post -mining land use and landowner wishes. <br />Sampling Methodology <br />Any CDRMS approved sampling methodology may be employed to determine the levels <br />of cover, production, and composition on the revegetated areas. If a methodology is <br />proposed that has not been previously employed or accepted by CDRMS, such <br />methodology will be submitted for approval prior to employment. <br />Determination of revegetation success in achieving the total vegetation cover and <br />total herbaceous production success criteria will be based on quantitative statistical <br />means. The Student's t test is a robust statistical test to evaluate the equivalency of <br />two sample means or a sample mean with a specified standard (Zar, 1974). This test <br />will be employed to test the null hypothesis that the sample mean for revegetated <br />parcel parameter is equal to or greater than 90 percent of the cover or production <br />success criterion. Standard statistical probability ranges will be employed in the <br />determination of whether the revegetated area mean is significantly less than the <br />criterion. When the revegetated area mean is not statistically significantly less than <br />the applicable criterion at a 90 percent confidence level employing a 10 percent <br />alpha error probability level, the revegetation will have been demonstrated <br />successful. <br />GCC Energy, LLC King I Mine <br />Section 2.05.4 <br />Page 8 July 11, 2017 (RN -07) <br />