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The results of a pre-mining vegetation survey for the King II Mine are provided <br /> in Appendix 7 of the King II Mine permit volume and on map King II-006. The <br /> survey found two plant communities in the King II Mine affected area: a <br /> Rabbitbrush/Big sage mixed shrubland community and a pinyon woodland <br /> vegetation community. <br /> No known threatened or endangered plant species were identified in the review of <br /> the areas next to the King I Mine and the pre-mining survey for the King II Mine; <br /> therefore, the Division finds, pursuant to Rule 2.07.6(2)(n), that the activities will <br /> not affect the continued existence of endangered or threatened species or result in <br /> the destruction or adverse modification of their critical habitat. <br /> The Division has previously approved a revegetation grass/forb seed mix for the <br /> King I Mine as set forth in Section 2.05.4 of the King I permit volume. The <br /> Division has previously approved for reclamation of the King II Mine the seed <br /> mix specified in Section 2.05.4 of the permit application. The mix is designed for <br /> establishing grasses, forbs, and shrubs that will support a post-mining land use <br /> of rangeland and wildlife habitat. (4.15.2(3)). <br /> C. The Division has previously approved the following revegetation success criteria <br /> for the King I Mine. (4.15.7(1)). <br /> 1. Cover: Minimum 30% total live cover, to be measured using a method to <br /> be approved by the Division. <br /> 2. Production: Minimum total herbaceous production in one year of 300 <br /> pounds per acre (dry weight). <br /> 3. Woody Plant Density-No criteria. <br /> 4. Species Diversit-Minimum 3 cool season perennial graminoids and 1 <br /> perennial for, with no qualifying single species accounting for more than <br /> 49 or less than I percent relative cover. <br /> The Division has previously approved the following revegetation success criteria <br /> for the King II Mine based on the results of a pre-mining vegetation survey. The <br /> criteria will provide an adequate basis for verifying the ability of the revegetated <br /> lands to support the post-mining land uses of rangeland and wildlife habitat. <br /> 1. Cover: A statistical comparison of samples of total vegetation collected <br /> from revegetated areas and a Rabbitbrush/Big sage mixed shrubland <br /> reference area. Student's t test will be used to test the null hypothesis that <br /> the sample mean for revegetated parcel cover is equal to or greater than 90 <br /> percent of the value of the corresponding cover success criterion, in <br /> accordance with Rule 4.15.7. <br /> 22 <br />