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Vegetation <br />• <br />• <br />C~ <br />Table 3-9 <br />Summary Determination of Impacts on Forest Service Sensitive Plants <br />Common Name Scientific Name Alt. 1 Alt. 2 Alt. 3 <br />Whitebristle cottongrass Eriophorum altaicum var. <br />neogaeum No Impact No Impact No Impact <br />Slender cottongrass Eriophorum gracile No Impact No Impact No Impact <br />Lesser panicled sedge Carex diandr•a No Impact No Impact No Impact <br />Lesser yellow lady's slipper Cypripedium parviflorum No Impact No Impact No Impact <br />Simple bog sedge Kobresia simpliciuscula No Impact No Impact No Impact <br />Wetherill tnilkvetch Asb-agalus wetherillii No Impact No Impact No Impact <br />Arctic braya Braya glabella No Impact No Impact No Impact <br /> <br />Rocky Mountain thistle <br />Cirsium pe~plexans <br />No Impact Beneficial <br />impact Beneficial <br />impact <br />Roundleaf sundew Drosera ~rotundifolia No Impact No Impact No Impact <br />Stonecrop gilia Gilia sedifolia No Impact No Impact No Impact <br />Colorado tansyaster Machaerantlzera <br />coloradoeizsis No Impact No Impact No hnpact <br />Kotzebue grass-of-pamassus Parnassia kotzebuei No Impact No Impact No Impact <br />Tundra buttercup Ranu~zculus karelinii (R. <br />gelidus ssp. grayi) No Impact No Impact No Impact <br />Hoary or silver willow Salix candida No hnpact No Impact No Impact <br />Autumn willow Salix serissinza No Impact No Impact No Impact <br />Sun-loving meadowrue Thalictrtrm heliophilum No Impact No Impact No Impact <br />Lesser bladderwort Utricularia minor No Impact No Impact No Impact <br />Park millcvetch Astragalus leptaleus No Impact No Impact No Impact <br />Arizona willow Salix arizonica No Impact No Impact No Impact <br />of effects for sensitive plants based on the <br />effects analysis above. <br />Noxious Weeds <br />Surface disturbance and reduction of vegetation <br />cover would provide suitable conditions for <br />noxious weed invasion. Additionally, increased <br />vehicle travel could spread noxious weed <br />species into the area. New access roads and <br />removal of Garnbel oak allowing for greater <br />movement by livestock could also increase <br />weed spread. As a result, the potential for <br />noxious weed establishment would increase <br />over current infestation rates with increased <br />travel in the area and ground disturbance <br />affecting plant communities in the project area. <br />To address this issue, design criteria require a <br />herbicide use and weed control plan be <br />approved by the Forest Service, annual weed <br />monitoring as part of the weed control plan, <br />MDW pad seeding and mulching, and power- <br />washing project vehicles. Surface disturbance <br />and reductions in vegetative cover would be <br />mitigated by seeding and mulching disturbance <br />areas including pads and staging areas, as well <br />as providing resource competition if noxious <br />weeds do enter an area. Power-washing <br />vehicles and equipment would reduce the <br />probability weed seeds would be transported to <br />Deer Creek Ventilation Shaft and E Seam Methane Drainage Wells FEIS <br />89 <br />