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c) Approximately 24 inches of topsoil will be placed to replicate common topsoil <br />depth conditions in the surrounding area in stands of this nature. <br />d) Weedguard fabric or it's equivalent will be placed along the contour of the <br />slope on alternating eight to twelve foot spacing's (depending on size of <br />reclamation drill to be used) to allow for conventional drill seeding of the <br />grassland mix between rows of aspen. <br />e) Commercially available containerized aspen stock will be used for planting <br />purposes from the most similar source elevation available in the area. <br />f) Aspen will be placed through the weed barrier by hand (or by mechanical <br />means if practical and economically feasible) as per best practices with <br />regards to depth, etc. <br />g) An "elk proof' exclusionary fence will be erected around the perimeter of the <br />study area to protect the area from ungulates. <br />h) As this area will not be receiving supplemental watering, in the event of stand <br />failure the area will revert back to grassland for purposes of Phase III bond <br />release in the future. <br />2) Colowyo agrees to establish one small (not greater than 1 acre) tall shrub <br />establishment site that that displays a thicker topsoil condition. The location of this field <br />trial will be along the transition zone between Sagebrush Steppe and Grassland <br />designated seeding areas. <br />a) The area will be regraded in accordance with PMT requirements. <br />b) The area will be tested for overburden suitability as per requirements. <br />c) Approximately eight to sixteen inches of topsoil (gradually thicker moving <br />down slope) will be placed to replicate common topsoil depth conditions in <br />the surrounding area in stands of this nature. <br />d) The Sagebrush Steppe mix will be modified to reduce the volume of "low <br />shrubs" in favor of tall shrub components of the mix. The grasses currently <br />included in the mix will also be reduced to minimize competition, while still <br />providing some soil stabilization function. The specific seed mix to be <br />utilized will be presented to the Division for their consent prior to <br />implementation of the trial. <br />e) For this trial, commercially available seed from the most similar source <br />elevation available in the region will be utilized. <br />f) Because minimum competition is the key to success for this trial, the seeding <br />of this area will occur in alternating two pass strips of the Tall Shrub mix and <br />the Grassland mix. <br />g) Colowyo will place contour furrows at intervals of approximately 50 feet <br />(given the utilization of a 12 foot reclamation drill). The drill will make two <br />passes directly below the contour furrow with the Tall Shrub mix. The drill <br />will then make two passes below the Tall Shrub passes with Grassland mix <br />and will interface with the next contour furrow. Thus creating an alternating <br />band of contour furrow, Tall Shrubs, Grassland and contour furrow that will <br />allow for specific emphasis on Tall Shrub establishment while minimizing the <br />risk of excessive erosion during the period of early establishment of the trial <br />area.