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Addendum to Section II.F.4.a(2) Threatened and Endangered Species <br />Discussions within this section originates from a survey which included several corridors for transporting <br />coal to the Bonanza Station in Utah. The species listed were located in the extreme western side of <br />Colorado on or in the vicinity of Raven Ridge, a considerable distance from the Deserado Mine. Since <br />the original survey, species statuses have been changed as outlined below. In addition, Astragalus <br />detritalis, debris milkvetch, was located at one location on the extreme eastern edge of the Deserado <br />Mine's permit boundary after the original survey was complete. Recent surveys can be found in the <br />Exhibit at the end of Section II.F. <br />Scientific Name <br />Common Name <br />Listing Status ** <br />Astragalus duchesnensis <br />Duchesne milkvetch <br />G3, S1S2, BLM-S <br />Eriogonum ephedroides <br />ephedra buckwheat <br />G3, S1, BLM-S <br />Hermidium alipes var. pallidum <br />Uintah hermidium <br />G4, S1 <br />Parthenium ligulatum <br />a.k.a. Bolophyta ligulata <br />Jones parthenium <br />a.k.a. ligulate feverflew <br />G3, S2, BLM-S <br />Penstemon grahamii <br />Graham beardtongue <br />G2, S1, BLM-S <br />Astragalus detritalis* <br />debris milkvetch <br />G3, S2, BLM-S <br />Data from the Colorado Natural Heritage Program updated February 2017. <br />** None of these species are Federal listed or under formal review for listing through the U.S. Fish <br />and Wildlife Service in relation to the Endangered Species Act. <br />* Specimen observed within the Deserado Mine permit boundary. <br />Nature Conservancy Natural Heritage Ranks —Global rank. <br />G2 Imperiled globally because of rarity (6 to 20 occurrences) or because of other factors <br />demonstrably making it very vulnerable to extinction throughout its range. <br />G3 Vulnerable throughout its range or found locally in a restricted range (21 to 100 occurrences). <br />G4 Apparently secure globally, though it might be quite rare in parts of its range, especially at the <br />periphery. <br />Colorado State Ranks - based on the status of a species in Colorado <br />S1 Critically imperiled in State because of extreme rarity (5 or fewer occurrences, or very few <br />remaining individuals, or because of some factor of its biology making it especially vulnerable to <br />extirpation from the state. <br />S2 Imperiled in State because of rarity (6 to 20 occurrences) or because of other factors <br />demonstrably making it very vulnerable to extirpation from the state. <br />Bureau of Land Management <br />BLM-S Bureau of Land Management sensitive: those species found on public lands, designated by a <br />State Director, which could easily become endangered or extinct in a State. <br />Minor Revision #177 (7/2020) II.F-18A <br />