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grounds and critical sage grouse habitat within and adjacent to the permit area. Sage grouse <br />critical habitat is located outside of the disturbed area. <br />Cultural and Historical Resources <br />Previous cultural and historic resources found within the permit area include four historic sites <br />and one prehistoric or protohistoric site. Two of the historic sites are undistinguished <br />homesteads with no important architectural features and which are not associated with persons <br />important in history. Another historic site is an uninhabited cabin with a corral. The Colorado <br />State Historical Preservation Officer determined that this uninhabited cabin is an undistinguished <br />structure with no important architectural significance and with no associations with persons <br />important in history. The fourth historic site, the Foidel Canyon Schoolhouse, is listed in the <br />National Register of Historic Places (Site 5RT192), and is located in the general area of the main <br />facilities along Foidel Creek. It will not be undermined or subsided and is protected <br />appropriately. The prehistoric site (5RT345) is a rock art site located on the outcrop of the <br />Twentymile Sandstone directly north of the main mine facility area. Mining approved under PR - <br />02 (Southwest Mining District) undermined and subsided 5RT345. Stipulation No. 33 was <br />attached to the PR -02 approval and Twentymile Coal Company took appropriate measures, as <br />determined by the United States Bureau of Land Management (BLM), prior to undermining this <br />site. Mitigation measures required by the BLM involved extensive research and documentation <br />of this site. The site has since been destroyed by subsidence and subsequent rockfall. <br />During the review of PR -10, two cultural resource sites were identified (5RT3324 and 5RT3325) <br />and are recommended to be eligible for inclusion on the National Register of Historic Places <br />(NRNP). These sites should not be disturbed by surface operations but they will be subsided. <br />Based on an analysis submitted by a consultant hired by TC, and the predicted effects of <br />subsidence, these sites should not be adversely affected by the mining activity proposed with PR - <br />10. History Colorado concurred with this based on a letter dated November 24, 2015 that they <br />submitted to the Division received on December 1, 2015. <br />Land I T-ses <br />Pre -mining and post -mining land uses within the permit area are pastureland and rangeland. Some <br />of the surface was previously disturbed by surface mining methods under Mine No. 1, Mine No. <br />2, and Eckman Park Mine (C-81-071) and Energy Mine No. 3 (C-84-062), and by facilities <br />previously permitted under the permit for the Fish Creek Tipple (C-1981-036). <br />Page 15 of 52 <br />