2008-06-18_REVISION - X200822901

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III: Project Location Please attach a photocopy of USGS Quad. clearly showing the project location. The Quad. should be clearly labeled with the Principal Meridian, Township, Range, Section(s), Quad. map name, and date. Please do not reduce or enlarge the photocopy. 14. Description: The general study area begins approximately five miles southeast of Hayden and ends around two miles north of the Twentymile Coal Company's mine headquarters. The core holes are scattered along the Twentymile Road (CR27) and south of the Seneca Mine. 15. Legal Location: Quad. Map: Mount Harris Date(s): 1971 (PI 1973) Principal Meridian: 6th X NM _ Ute NOTE: Only generalized subdivision (quarter-quarters) within each section is needed. Township: 6N Range: 87W Sec.: 31 1/s: NE, SW, NE Sec.: 34 %4s: SW, SW, SE Township: 5N Range: 87W Sec.:4 Sec.: 5 Sec.. 8 Sec.: 9 Sec.: 10 1/s: SE, SW, NE 1/s: NE, NW, NE; NW, NW, NE 1/<s: NE, NW, NE 1/s: SW, SW, SE; SE, NW, SW 1/s: NE, SE, NE (state) If section(s) is/are irregular, explain alignment method: NW corner 16. Total number of acres surveyed: 2.07 17. Comments: IV. ENVIRONMENT 18. General Topographic Setting: North of the Hillsberry and Williams Fork Mountains, and west of Twentymile Park. The well locations are situated along both east and west sides of Grassy Creek. This is a north-flowing tributary of the Yampa River. The western holes are generally in open rolling grassland which has been revegetated during a Conservation Reserve Program (CRP). The eastern holes are in terrain that is steeper and more dissected by numerous ridges and drainages. Current Land Use: Livestock grazing, mining and hunting. 19. Flora: To the east the vegetation is a mix of sagebrush meadows with pockets of scrub oak, mountain mahogany, serviceberry and chokecherry bushes. Grasses and forbs fill in between the shrubs. The western locations are in open rolling grassland dominated by revegetated (CRP) wheat grasses. 20. Soils/Geology: Medium brown silty clay overlying Cretaceous age sedimentary rocks. Two formations are found here: the Williams Formation consisting of sandstone, shale and major coal, and to a lesser extent the Iles Formation which is sandstone and shale with coal beds in the upper half of the formation. 21. Ground Visibility: Visibility was limited and varied from 10% to 40% due to the thick vegetation cover. There were areas which afforded views of the ground surface via game/livestock trails, rodent backdirt piles and two-track roads. 22. Comments: V. LITERATURE REVIEW 23. Location of Files Search: OAHP Compass Database Date: 06/11/08 24. Previous Survey Activity In the project area: OAHP Compass indicates that 12 cultural studies have occurred within the sections that the core holes are located. These include: High Plains Consultants, Cow Camp U G Drill Sites and Access Roads (Miles & Evans 1983); Western Historical Studies (Mehls, Steven & Carol 1991) for a large coal mining survey in Routt and Moffat Counties; Metcalf Archaeological Consultants: Five Surface Water Monitoring Flumes (Rood 1990); Nine Groundwater Monitoring Wells (Rood 1990); Addendum - Nine