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INTRODUCTION Metcalf Archaeological Consultants, Inc. (Metcalf) has completed an intensive cultural resource inventory for Trapper Mining, Inc. in Moffat County, Colorado. The surveyed area is located in the 6th PM, Township 6N, Range 91 W, sections 27, 28, and 34 on state lands managed by the Colorado State Land Board Surface and Coal Lands (CSLBSCL) (Figure 1). The project encompasses three parcels in the proposed Permit Revision #10 (PR 10) 2020-2021 disturbance area within the state coal lease boundary. The area of potential affect (APE) is the inventory area. Inventory covered 163 acres. The investigations reported here are required under Section 106 of the National Historic Preservation Act of 1966 (as amended) (NHPA) because the proposed project involves federal approval. The Colorado Division of Reclamation, Mining and Safety (DRMS) consulted with the Colorado Office of Archaeology and Historic Preservation (OAHP) and determined these areas would need to be inventoried for cultural resources. The cultural resources inventory was completed to meet the requirements of the DRMS, the Office of Surface Mining (OSM), and the CSLBSCL. This report facilitates the OSM's compliance with Section 106 of the NHPA and other applicable federal and state legislation and regulations by providing information on the presence of cultural resources, recommendations about resource eligibility to the National Register of Historic Places (NRHP), and recommendations for Section 106 findings pertaining to effect when historic properties are present. Fieldwork for this project was conducted from August 24 to 26, 2020, by Metcalf archaeologists Kelly J. Pool, Daan Meens, and Jasmine Saxon. Jesse Clark and Jessica Ericson prepared field and report maps and created GIS data shapefiles for the project. Ronald Rood served as the Principal Investigator. Metcalf conducted all work under the terms of the company's State of CO permit #77485 (exp. 2/28/2021). All field documentation, maps, and digital images for this project are on file with Metcalf. No artifacts were collected. ENVIRONMENT TOPOGRAPHY AND GEOLOGY The project area is in the Southern Rocky Mountains province of the Rocky Mountain System division (Fenneman 1946). Specifically, the project area is located immediately south of the town of Craig and one to two miles north of the Williams Fork Mountains, at elevations ranging between 6,360 and 6,600 ft. The Yampa River is two to three miles northwest of the project area, and the area drains north and northwest to the river through Big Bottom. Specifically, the parcels are located in areas ranging from plains and gentle slopes that have been previously cultivated to rolling sagebrush -covered hills (Figure 2, Figure 3). The bedrock geology of the area is homogeneous and consists of Tertiary -aged sedimentary sandstone and siltstone of the Browns Park Formation west of the Park Range (Tweto 1979). For the most part, the formation is not exposed in the project area, although an For Official Use Only: Disclosure of site locations prohibited (43 CFR 7.18) Page 11 Privileged Information —Do Not Release 190