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TR-62- Midterm Review Resporues <br />Page 4 <br />29, 2008 addendum to the 2008 Kill and Gully Survey, which described <br />4. On August 4, 2008, the Division received a Jul <br />the scope of work forgeotechnical investigations to be performed in association with the `Shrub Plot Slide "and `Pond 016 <br />Slide'; slope failures that occurred in the spring of 2008. Please provide an additional Rill and Gully Survey <br />addendum upon completion of the geotechnical investigations, for Division review and <br />acceptance, prior to initiation ofrepam work The further addendum should contain the NWCC <br />final geotechnical report and the selected remedial plan for each slide. <br />Response: SCC will submit, for review and approval, the final geotechnical report and selected remedial plan <br />for each slide. <br />5. Certain updates to the revegetation plan are warranted Specifically, the woody plant density standard for aspen planting <br />areas needs to be defined, and the Appendix 22-3 `Aspen Study Plan" needs to be updated to incorporate the final study <br />report for the original study plots, and to describe the on going aspen/serviceberry establishment studies being conducted in <br />cooperation with the Forest Service Rocky Mountain Researrh Station. Because the aspen planting areas include seeding and <br />planting with woody shrubs in addition to aspen, it would seem reasonable that the concentrated aspen planting areas include <br />both a total woody plant stem density standard and an aspen stem density standard. A total woody plant density of 1000 <br />stems per acre, with at least 150 aspen stems per acre may be an appropriate standard for these concentrated planting sites. <br />Please address these issues and amend the appropriate sections of Tab 22 as warranted. <br />Response: SCC is conducting monitoring and analyses to determine appropriate and reasonable woody <br />plant density standards. A revision to update Tab 22 will be submitted for approval prior to Phase III bond <br />release requests. <br />The required application form, public notice, insertion instructions, and the revised/updated material are <br />attached. Enclosed are two (2) copies of the application for technical revision, a third copy has been sent to <br />the Denver office also addressed to you. If there are any questions, please contact me at (970) 276-5217 or <br />(970) 846-3648. <br />Sincerely, <br />4? <br />Roy A. Karo <br />Reclamation Manager <br />cc: Carl Johnston (OSMRE) <br />John Husband (BLM) <br />Seneca Coal Company • P.O. Box 670 • Hayden, Colorado 81639 <br />Telephone (970) 276-5219 • FAX (970) 276-6222