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For grassland areas, success will be demonstrated for cover and production <br />when the reclaimed area is at least 90 percent of the reference area and <br />meets the 90% confidence interval using a one-sided T-test. No woody stem <br />density standard will apply to grassland areas. Species diversity standards <br />are 2 cool season grasses and 1 warm season grass comprising 5 to 30 <br />percent of total live vegetative cover excluding annual weeds. One <br />perennial forb should comprise 5 percent of total live vegetative cover <br />excluding annual weeds. <br />For oak/pinion areas, success will be demonstrated for cover and production <br />when the reclaimed area is at least 90 percent of the reference area and <br />meets the 90 percent confidence interval using a one-sided T-test. The <br />woody stem density standard is 500 stems per acre. Species diversity <br />standards are 2 cool season grasses and 1 warm season grass comprising 5 to <br />30 percent of total live vegetative cover excluding annual weeds. One <br />perennial forb should comprise 5 percent of total live vegetative cover <br />excluding annual weeds. <br />E. The Division approves of the reference areas that the applicant has selected <br />based on the requirements of Rule 4.15.7(3). Extended reference areas will be <br />used. Reduction in size of the permit area from 17,000 acres to 3142 acres as a <br />result of PR -01 will not affect the ability of the applicant to utilize the extended <br />reference area concept. The areas are depicted on Map 2.04.10-1 Vegetation <br />Community Map. <br />F. The reference areas will be utilized to determine revegetation success in a <br />manner that the Division finds acceptable. (4.15.7(4)). <br />19 <br />