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Mr. Rich Atkinson - 3 - May 12, 1987 stockpileland total disturbed acres (including areas stripped of topsoil) once every five years. The survey would be submitted as part of each renewal application in order to verify that sufficient topsoil was available to reclaim the current disturbance. If Colowyo agrees to this requirement, the appropriate pages should be revised accordingly. 10. A description of soil 32D-Yamac loam, appears to be missing from the narrative, and this should be inserted. Rule 2.05 - Operation and Reclamation Plans 1. Table 1 shows a decrease in acreage disturbed and topsoil removed when compared to the original soil balance table. It also shows a general increase in the amount of stockpiled topsoil-. A brief explanation of these differences should be included either in the narrative or in a separate response letter. 2. Seam A3 should be listed either under the truck -shovel or _ dragline operations on pages 2.05-7 & 8. 3. The operator should discuss the methods of erosion control and other protective measures to be used in the (temporarily) unreclaimed strip in Streeter drainage. In addition, the operator should explain why it was necessary to increase the width of this area as compared to the original plan. 4. The reclamation seed mix tables on pages 2.05-44 and through 2.05-49 appear to have listed some species under the incorrect life form. These tables should be revised to include winterfat and fringed sage as shrubs, ~~ ~- 5. The discussion of shrub reestablishment on page 2.05-53 should include the areas seeded to shrubs only. All shrub establishment areas should be depicted on Map 4 if possible. 6. Page 2.05-57 discusses the mulching requirements at the site. It is the Division's interpretation that Stipulation 4, which Colowyo has agreed to, summarizes these requirements. Monitoring data to date indicates no significant difference between mulched areas on a 3:1 slope versus non-mulched areas on flat slopes. However, it should be noted that this data cannot be correlated to suspension of mulching on steep slopes, as currently proposed: The Division will approve Colowyo's request to discontinue further monitoring of mulched versus non-mulched areas with the understanding that the requirements of Stipulation 4 remain in effect. Specifically, if in the future, on-site inspection by the Division or information collected by Colowyo indicate that the suspension of the mulching requirement is detrimental to vegetation establishment or contributes to excessive erosion, mulching will be resumed. 7. The rewrite of the grazing management plan on page 2.05-63 deleted many specifics from the original. The operator should include the plan in full, or justify this deletion.