2013-05-23_PERMIT FILE - C2009087A

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RULE 2 - PERMITS • Sagebrush /Mountain Brush Mosaic - The Sagebrush/Mountain Brush Mosaic vegetation type • is a transition cover type established on suitable terrain and habitat between the Sagebrush Grassland and Mountain Brush vegetation types. The plant communities that comprise this vegetation type are interspersed to such a degree that they could not be mapped as separate vegetation types. The individual species which comprise this transition type are representative of either the Sagebrush Grassland and/or the Mountain Brush types, depending on terrain, soils and habitat of the particular area. • Cropland/ Small Grains - This portion of Routt County has been used for the cultivation of small grains for many decades. Although some fields have been retired to grass production (Cropland, Hay Production), many continue to be actively used.. Small grain crops of mostly wheat are grown in a two -year rotation. In addition to lands used for production of small grains, some cultivated lands are presently planted to alfalfa for the production of hay. These areas are mostly on heavy- textured residual soils and typically support a single cutting per year. • Mesic Drainage /Riparian - This vegetation type is located in drainage bottom sites, where growth factors are favorable for herbaceous species. High moisture, low woody plant competition (except in the narrowest woody draws), high nutrients from livestock congregation, and deep soils of moderate texture result in typically high herbaceous production levels. Within the boundaries of the Mesic Drainage/Riparian vegetation type, perennially wetted regions exist, especially along channels where water frequently flows. These areas are supported by seeps, likely meet regulatory criteria for wetlands. Less permanently wet adjacent • areas- those not likely to meet regulatory criteria as wetlands- are much more extensive in the Mesic Drainage/Riparian type than potential wetlands. Seep wetlands are dominated by Nebraska sedge (Carex nebrascensis), smallwing sedge (Carex microptera), beaked sedge (Carex utriculata), Tracy rush (Juncus tracy), and redtop (Agrostis gigantea). Scattered inclusions of tall manna grass (Glyceria elata), common spikerush (Eleocharis palustris), slender wheatgrass, meadow barley, Agassiz bluegrass, and Baltic rush (Juncus arcticus ssp. ater), were observed in moist areas. There are also locally significant amounts of introduced perennial grasses including timothy, smooth brome and redtop in this vegetation type. Quackgrass (Elytrigia repens), a restricted noxious weed in Colorado, can also be present. Native perennial forbs are represented within the vegetation type, with good cover of western yarrow, Pacific aster, nettleleaf giant- hyssop (Agastache urticifolia), and showy fleabane (Erigeron speciosus). Other native perennial forb species encountered include cutleaf coneflower, bracted aster (Aster foliaceous), Hall willowherb (Epilobium halleanum), Richardson geranium (Geranium richardsonii), bigleaf avens (Geum macrophyllum)), few - flowered false Solomon's seal (Maianthemum stellatum), fieldmint (Mentha arvensis), common yampa (Perideridia gairdneri ssp. borealis), Gmelin crowfoot (Ranunculus gmelinii), willow dock (Rumex triangulivalvis), white checkermallow (Sidalcea candida), stinging nettle (Urtica dioica ssp. gracilis), cornlily (Veratrum tenuipetalum), and American speedwell (Veronica americana). . Introduced perennial forbs commonly encountered included common plantain (Plantago major) and common dandelion as well as Canada thistle (Brea arvense). Introduced annual and biennial PSCM Permit App. 2.04 -137 6/15/09