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this site. Based on information provided in the permit application and a review of the <br />adjacent National King Coal, Inc., permit, the Division recommended the following <br />revegetation success criteria. Blue Flame agreed to these criteria. <br />- The standard for herbaceous cover is 30 percent, to be measured either by ocular <br />estimates using a 1 meter squared quadrat, or by the point intercept method. <br />- The standard for herbaceous productivity is 500 pounds per acre (or 28.0 g/ % mz - <br />our field units of measure) of dry biomass measured through the use of the harvest <br />method via 1 meter squared quadrats. <br />- The standard for woody plant density is a minimum of 600 stems per acre. <br />- The standard for species diversity using the species composition approach is as listed <br />below: <br />Species Requirement* <br />Grasses <br />Cool Season 2 <br />Warm Season 2 <br />Forbs 2 <br />Shrubs 2 <br />* No single species shall be represented by more than 40 percent relative cover or less <br />than 3 percent relative cover. <br />Sample Numbers/Sample Adequacy <br />Sample adequacy calculations were made for vegetative cover of the sampled reclaimed <br />area. The following formula, accepted by the CDMG, was used for these calculations: <br />z z <br />nmin - t S <br />(d Xnar)z <br />where <br />nm;,, =minimum sample size <br />t =the "T" distribution value at the 90% confidence level <br />s =sample standard deviation <br />sz =sample variance <br />d =percent acceptable deviation from the mean (10%) <br />Xba~ =sample mean <br />Sample adequacy was achieved for the vegetation cover parameter. Fifteen cover <br />transects were initially sampled. Minimum sample size was 14 as reported on Table 2. <br />Statistical Analysis <br />Evaluation of revegetation establishment and success was accomplished through a <br />comparison of the reclaimed area mean total vegetative cover with the reclamation <br />5 <br />