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i; <br />1988 vegetation guidelines in order to access when enough <br />samples have been collected. The Division recommends the use <br />of the sample adequacy formulas in the 1995 bond release <br />guideline. The proposal also states that a maximum of 50 <br />samples will be taken. However, the regulations require a <br />demonstration at the 90$ ,confidence level that success <br />standards have been met. if more than 50 samples are required <br />to make this demonstration, then more samples need to be <br />taken. Please comment. <br />5. TerraMatrix indicates that production will be estimated by <br />clipping herbaceous biomass. If this means that woody plants <br />will not be sampled on the mine or reference areas, then the <br />Division agrees. Please confirm or correct the Division's <br />assumption. <br />6. If the permit allowed different topsoil replacement <br />thicknesses over the mine site, then TerraMatrix should <br />consider treating areas with different topsoil replacement <br />thicknesses as separate sampling areas. Please comment. <br />Please feel free to contact Larry Routten or myself if you have any <br />questions. <br />Sincerely, <br />.~ <br />a ~..~ ,, <br />oseph J. Dudash <br />Environmental Protection Specialist <br />cc: Jim Orpet (Intermountain Resources) <br />Larry Routten (DMG) <br />David Berry (DMG) <br />C:\WP51\HGHINE\VEGSAHP <br />