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in the Ponderosa Pine-Pinyon-Juniper Woodland vegetation type, this area <br /> had a total average basal cover of 19. 1 percent dominated by basal grass <br /> cover of 5.3 percent and lesser amounts of tree, shrub and forb cover. <br /> Sample adequacy was calculated at 20 samples while a total of 60 samples <br /> were taken. Refer to Exhibit 11 , Vegetation Inventory for detailed <br /> information regarding this reference area. <br /> Technical Revision No. 39 (TR-39) was submitted during May 2011, requesting to replace <br /> the Ponderosa Pine-Pinion-Juniper Woodland Reference Area (RA) (Plot B) with a new <br /> Proposed RA, Pinion-Juniper RA located on the northwest side of the Portals Reclaimed Area <br /> which Energy Fuels felt had more applicable slope aspects, soils and characteristics <br /> comparable to the Portals Area. However, due to landowner concerns and objections about <br /> changing locations of the RA, TR-39 was amended (October 2013) to retain RA Plot B and <br /> combine the sample data of both RA's together, combining RA Plot B and the new Proposed <br /> Pinion-Juniper RA. <br /> As described on the approved Permit Pages 2.05.4-26 and 27, a weighted average <br /> approacr will be used to calculate data by combining data from the RA "Plot A" for the <br /> Refuse Pile and the RA "Plot B" for the old Woodland RA adjacent to the Mine Portal Area. <br /> TR-39 herein adds the inclusion of the New Pinion-Juniper RA located at the northwest side <br /> of the mine Portal area to be combined with the weighted averaging factors. This <br /> methodology is referenced in the Bond Release Guidelines, Example 3, Pages 25 -26. <br /> Accordingly, final revegetation success criteria from the three (3) RA's will be calculated <br /> based upon the weighting value factors as outlined in Example 3 referenced above. <br /> Reference Area Weighted Average Calculations: <br /> The final weighted average reference area revegetation success standards for plant cover and <br /> forage production will be calculated based upon the surveyed areas of the three (3) respective <br /> references areas. Refuse Pile Reference Area (Plot A), the New Portal Reference Area (Pinion- <br /> Juniper RA) and the old Mine Portal Reference Area (Plot B) are depicted on revised Map 16 and <br /> have been surveyed and the acreages calculated for each reference area. <br /> TR-39 2.04.10-5 Revised Nov 2013 <br />