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July 8, 1991 Page 2 Site 5RT118 is situated on the edge of the proposed permit boundary on the opposite side of the drainage in which a proposed haul road will exit the minesite to the northwest. It is situated outside proposed disturbance areas. However, it is highly probable that blasting will be conducted within 2,000 feet of the rock art panels. For these reasons, Peabody proposed a plan to protect and mitigate the site in letter correspondence dated October 4, 1990 to the Colorado Historical Society, Little Snake Resource Area Office of the Bureau of Land Management, and the Office of Surface Mining. Concurrence with the plan was received from the SHPO on October 17, 1990. This letter serves to inform you that work has been completed at 5RT118. Enclosed please find an original of updated pages of the site form, photos, and a scaled drawing of the rock art panel at SRT118. Peabody seeks concurrence that this documentation is adequate to fulfill the documentation requirements recommended in MAC's 1990 report of survey results in mine expansion areas, the mine permit revision application, and to which the SHPO concurred on October 17, 1990. Following concurrence, Peabody will update the permit revision application with all appropriate documentation and correspondence. This letter also serves to inform you that a construction limits boundary has been posted around the site to further prevent potential impacts to portions of the site that might contain additional data that could contribute to the site's eligibility to the NRHP. All construction activities, including vehicular and pedestrian traffic, will remain outside the posted area. If the boundary cannot be adhered to, Peabody will notify the appropriate authorities, and an appropriate plan for testing and mitigation will be developed.