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3-17 • ~J 3.4.9 Evaluation of Revegetation Success of revegetation will be determined by comparison of reclaimed areas to reference areas using the same techniques used in the baseline vegetation inventory (WRDC 1980b). The area will be subjectively evaluated annually for success of revegetation beginning the second year after initial permanent seeding. A statistically adequate sampling of cover and woody plant density will take place in the fourth year or earlier at the operators discretion. Parameters compared will include vegetation canopy cover, herbaceous production, species diversity, and woody plant density. For demonstrations of revegetation success, the parameters of vegetation cover, herbaceous production and woody plant density will be sampled to statistical adequacy and compared to the appropriate reference areas (cover and production) and standards (woody plant density). Diversity comparisons will be made based on relative cover values obtained from the statistically adequate sampling. Statistical adequacy will be demonstrated using formulas recommended in the Division's current bond release guideline. Statistical tests of success will also follow the procedures recommended in the bond release guideline. Sampling techniques used for cover, production, and woody plant dens'dy will be the same as those used for baseline data collection. The following success standards will be used to evaluate revegetation. • Dens' Greasewood Shrubland Shadscale Shrubland Big Sagebrush Shrubland Juniper Woodland Divers' A minimum of three perennial species shall each provide a minimum of 3 % relative cover. At least two of these species must be cool season perennial grasses. No 500 stems per acre 500 stems per acre 500 stems per acre 1,500 stems per acre individual species shall represent more than 60 % relative cover. Nlo Volume 1 6.29-96