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5 for Evaluation (36 CFR 560.4). For archaeological resources, eligibility is typically recommended under Criterion d, on the basis of the information potential of surface artifacts and features, and intact sub-surface cultural deposits. Historical resources may be evaluated under any of the four Criteria on the basis of information potential or significant historic associations. To meet these objectives, a combination of archival research followed by an intensive (1007) inventory of the proposed drill hole locations was conducted. Archival research of the proposed exploration area was pursued at the Office of Archaeology and Historic Preservation in Denver and at the BLM, Little Snake River Resource Area. This research and the overviews of the area indicated that both historic and prehistoric resources could be expected in the area with site _ density being generally low. Expected prehistoric resources were open campsites and lithic scatters while expected historic resources included those associated with agriculture and mining. -Sites were defined as five or more artifacts or a feature, structure or trail, or any combination of these resources meeting OAHP criteria in a discrete location that is believed to represent the locus of patterned human activity. Isolated finds were defined as four or less artifacts without evidence or expectation of additional cultural materials in the immediate vicinity, and that do not represent the locus of patterned human activity. FIELD METHODS An intensive pedestrian survey methodology was used in the conduct of this investigation. Survey blocks of various sizes around the staked drill hole locations utilized a series of parallel pedestrian transects walked at approximately 15 meter intervals. Portions of access corridors that will require upgrading before, during or after drilling operations were inspected using parallel pedestrian transects on each side of the flagged centerline. Each side of the centerline received total coverage amounting to 15 m (50 feet), for a total of 30 m (100 feet) survey corridor width. Special attention was paid to areas of enhanced subsurface visibility, such as eroded areas, rodent backdirt piles, road cuts and animal trails. If cultural material was located, the area was examined closely until all surface manifestations had been identified and the resource adequately defined. Appropriate IMACS forms and other documentation were then completed, including plotting the resource on the proper USGS quadrangle map. Sketch maps were prepared using a Brunton Pocket Transit and pacing for distances. Black and white photographs were taken of all the sites. Datums are white PVC pipe with a metal site tag embossed with the temporary site number. The size of the blocks around the drill hole locations was dictated by the anticipated size of the impacted area plus a 50 foot buffer. For drill pads PEDS-1, 9, 10 & 25 a block 300' on a side was surveyed centered on the staked drill location. This resulted in roughly two acres of land being inventoried for each of these locations.