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X09-18-1995 10~43RM FROM SRURGE RIJD SRURGE TO 8328106 P.04 establish wildlife cover clumps and hiding area. The practical [teed for determining woody plant densities in the undisturbed area is moot. However, if necessary we would,propose to take a maximum of fifteen 50 square meter belt ttansects to be aligned with the cover transects. 'This parameter would not be subject to sample adequacy requirements. Semple Adequacy Sample adequacy calculations will be made for both vegetative cover and herbaceous production sampling of the oakbtvsh community. The following formula will be used for these calculations: (t)2 (s)2 nmin = - (d Xyaz)2 where: n~ =minimum sample size t =the Student's t distribution value at the 95~ confidence level s =sample standard deviation (s)2= sample variance d = pettertt acceptable deviation from the mean (1096) Xbaz =sample mean Sample adequacy will be calculated for vegetation cover and herbaceous production sampling to a maximum of fifty (50) cover transacts or production plots. Lf sample adequacy is indicated by less than the maximum number of transacts or quadrats, sampling will be considered adequate for that parameter. Parameters will be tested at the 9596 confidence level. Confidence levels achieved for each parameter will be calculated and reported. WETLAND COMMUNITY The existing wetland community in the proposed expansion area is hypothesized by Wright Water Engineers to be a remttant oxbow of the Notch Pork of the Gunnison River which has been completely cut off from the river by construction for the "new" State Highway 133 alignmeat on the south side of the river. This area has bcen mapped and described in accordaace with U.S. Army Carps of Engineers requirements for delineating jurisdictional wetlands. As this community is small in size (0.3 acres), it qualifies as a minor vegetation community, as defined by CDMG guidelines. We propose to provide a qualitative description of this vegetation cotttmunity for baseline vegetation requirements. We discussed the need far sampling the aakbrush reference azea at the mine to compare to the undisturbed oakbrush in the proposed expansion area. As we both acknowledged, the revegetatian on the refuse pile (both the eusting LRP and any proposed expansion) would not attempt to establish an oakbrush wmmunity. The currently approved seed mix reflects the 3