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<br />locations will be numbered and shown on the map. Sample locations in the field <br />will be determined by pacing from recognizable landmarks. <br />A minimum of 15 cover and production samples will be taken, then sample <br />adequacy will be calculated using the formula: <br />Tz S2 <br />Nm~ = Dz <br />Where: Nm;, =The minimum. number of observations ,needed <br />T~ = 1.28 for the 80°h of confidence level, and <br />1.64 for the 90°,b confidence level <br />S' =.Variance of initial sample <br />D = .1 x sample mean tx) times level of accuracy <br />(t 10°,GI <br />Sampling will continue until the required number of samples to meet adequacy <br />has been taken, up to a maximum of 50 on affected areas and 50 on each <br />reference area; the confidence level achieved with the maximum number of <br />samples will be calculated if N„„, is greater than the maximum number taken. <br />C. Comparisons between reclaimed and undisturbed areas, in order to demonstrate <br />that success criteria of 4.15.8, 4.15.9, or 4.15.10 have been met, will be based <br />on the following: <br />Cover: Vegetation cover will be restored on the disturbed area.to 90 percent of <br />the vegetation of the reference area. <br />Production: Vegetation production will be restored on the disturbed area to <br />90 percent of the vegetation on the reference area. <br />Species Diversity: Establish a minimum of two cool season grasses, two warm <br />season grasses, two fortis, and two species of woody plants. No single species <br />will comprise more than 40 percent relative cover nor less than three percent <br />relative cover on the revegetated area. <br />The Division proposes to approve the basis for this comparison. <br />D. The Division proposes to approve of the reference areas which the applicant has <br />selected based on the requirements of Rule 4.15.7(3). <br />E. The reference areas will be utilized to determine revegetation success in a manner <br />which the Division finds acceptable (4.15.7(4)). <br />VI. Protection of Fish. Wildlife. and Related Environmental Values <br />A. The applicant has proposed the use of persistent pesticides on the site during <br />reclamation activities. The Division proposes to approve this usage (4.18(41(8)1• <br />11 <br />