2013-04-10_PERMIT FILE - C1981019 (82)

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RULE 2 PERMITS soils with textures of silty -loam to sandy -loam where possible; 7) use of few - flowered Mountain big sagebrush (Artemisia tridentata var. pauciora) seed in the Colowyo environs; 8) use of sagebrush seed collected from as close to the Axial Basin circumstances as possible; 9) planting mixes that exhibit significantly reduced quantities of grass seed; 10) supplement with additional grass seed (if necessary) two to three years after sagebrush seedlings have emerged; and 11) placement of grass, forb, and shrub seed in differing rows to reduce interspecific competition when practical. As previously indicated, sagebrush steppe revegetation will be primarily targeted on slopes exhibiting gradients of 10% or flatter in the Collom area. At the discretion of the reclamation coordinator, the sagebrush steppe mix may be applied to additional areas (up to 15% slope) for given opportunities that may be presented. However, in any such circumstances where 10% slope is exceeded, specific sediment control measures such as surface roughening, contour furrows and seeding on the contour of slopes is a necessity. Mulching Techniques Mulches tend to shade the soil, thus slowing the rise in soil temperature needed for germination of seeds. At Colowyo, soil moisture is not usually a limiting factor. Soil moisture is usually very high during the spring, due to precipitation during the winter and early spring months. The summer months are generally dry, often with little additional precipitation. By not utilizing mulch, soil temperatures are increased earlier in the spring, thus enabling the seeds to germinate earlier when soil moisture conditions are optimum. When the seeds germinate earlier, they are able to utilize soil moisture earlier in the growing season. This results in further root development by the plants, aiding survival through the dry summer months. Surface manipulation methods such as contour furrows, drainage benches and permanent drainage channels will be utilized to eliminate any sediment control issues sometimes rectified by using mulch. Where deemed necessary by the reclamation coordinator (e.g., sagebrush steppe targeted areas, south - facing slopes, etc.), techniques such as mulching, chisel plowing, or discing on the contour will be reinstated as necessary. Please refer to Volume 1, Section 2.05.4 for further historical context and discussions concerning mulching reclamation areas on Colowyo reclamation. Irrigation No irrigation is planned for areas to be seeded. Pest and Disease Control Noxious plants, as defined in Section 1.04, will be managed in accordance with the following section — "Weed Management Plan ". If insects become a problem to the point where they endanger the successful establishment of the seeded vegetation on the reclaimed area, they will also be controlled using methods suggested by the Colorado State University Extension Service. All herbicides and pesticides utilized will be those that are approved by the appropriate state and federal governmental agencies responsible for the approval and distribution of such agents. Weed Management Plan Collom — Rule 2, Page 118 Revision Date: 9/28/11 Revision No.: PR -03