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sample adequacy. Total live vegetation cover of 57.73% was reported; a value which includes <br />several noxious weed species: Aegilops cylindrical, Jointed Goatgrass (0.13%); Bromus <br />tectorum, Cheatgrass (5.07%); Cirsium arvense, Canada Thistle (0.13%); Cirsium vulgare, Bull <br />Thistle (0.27%); Convolvulus arvenssis, Field Bindweed (4.27%); and Erodium cicutarium, <br />Redstem Filaree (0.13%). Noxious weed cover was 10% in total, (relative cover of 17.3%). <br />Non -noxious weed cover was 47.73% in total, (relative cover of 82.7%). The data shows that <br />native vegetative cover satisfies the revegetation success criteria (a technical standard of 19.3% <br />total vegetation cover). <br />The sedimentology evaluation projects a mean sediment yield for the reclaimed area of 0.249 <br />tons/acre/year, with a range of 0.006-1.032 tons/acre/year. The projected mean sediment yield <br />for the adjacent undisturbed extended reference area was 2.767 tons/acre/year, with a range of <br />0.040-14.368 tons/acre/year. <br />Following the approval of SL-2 the sediment pond at the Hubbard Creek Fan 91 Site (Pond F) <br />will no longer be required. Since no permanent pond demonstration has been made, the earthen <br />embankment should be breached and the primary and emergency discharge culverts removed, so <br />that the pond is no longer able to retain water. <br />Group 2 (Boreholes/Pads/Roads) <br />The boreholes, pads and roads for which phase II bond release has been applied for with SL-2 <br />were reclaimed between 2003 and 2012. Stockpiled topsoil was spread uniformly, before the <br />sites were seeded with the appropriate seed mix, as specified by the land owner/manager. <br />Topsoil depths were measured at 26 locations during vegetation sampling in 2019, using a 2'/4 <br />inch auger to determine the depth from the surface to the C-horizon. The range was 4" to 21" <br />and the mean depth was 13.6". <br />In the Vegetation Sampling Report submitted with the SL-2 application 30 samples were <br />reported from the extended reference area and 32 from the reclaimed area, which satisfied <br />sample adequacy. The extended reference area was predominantly a dense mountain shrub <br />community, dominated by a dense woody canopy with scattered openings and a sparse shrubby <br />and herbaceous understory. Total live vegetation cover of 83.40% was reported, but herbaceous <br />vegetation cover (the revegetation success criterion) was 9.34%. <br />In the reclaimed area total live vegetation cover of 65.25% was reported; a value which includes <br />several noxious weed species: Bromus tectorum, Cheatgrass (0.19%); Cirsium arvense, Canada <br />Thistle (1.00%); Cirsium vulgare, Bull Thistle (0.13%); Convolvulus arvenssis, Field Bindweed <br />(0.38%); and Erodium cicutarium, Redstem Filaree (0.06%). Noxious weed cover was 1.76% in <br />total, (relative cover of 2.7%). Native or non -noxious weed cover was 63.49% in total, (relative <br />cover of 97.3%). The data shows that vegetative cover in the reclaimed area satisfies the <br />revegetation success criteria (greater than 90% of the total herbaceous cover of the extended <br />reference area). <br />The sedimentology evaluation projects a mean sediment yield for the reclaimed area of 0.269 <br />tons/acre/year, with a range of 0.0003-2.611 tons/acre/year. The projected mean sediment yield <br />C-1981-022, SL-2 Page 20 of 23 <br />