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4 <br />attention was given to examining cutbank exposures along drainages in the survey <br />area for evidence of buried surfaces, cultural features, or cultural materials. <br />Statement of Objectives <br />Following state and federal policies and regulations implementing the <br />National Historic Preservation Act (Public Law 89-665) as amended, this project <br />area was inventoried to identify any cultural resources within the potential area <br />of effect of the proposed undertakings. Any discovered cultural resources were <br />to be evaluated for eligibility to the National Register of Historic Places <br />(Register) under the Criteria for Eligibility (36 CFR §60.4). Register <br />eligibility is evaluated in terms of the integrity of the resource, and its <br />association with significant persons, events, or patterns in history or <br />prehistory, its engineering, artistic, or architectural values, or its <br />information potential for important research questions in history or prehistory. <br />Prehistoric resources are most often evaluated under Criterion d. for their <br />potential to yield information important in prehistory. Significant information <br />potential in a prehistoric site requires that the site contain intact cultural <br />deposits or discrete activity areas that can be securely associated with a <br />temporal period or named cultural group. The potential for intact deposits or <br />cultural/temporal associations may be inferred from surface evidence of cultural <br />features or undisturbed Holocene deposits, and the presence of temporally or <br />culturally diagnostic artifacts. Historic resources may be evaluated under any <br />of the Criteria. However, in the absence of structural features or documented <br />association with significant historic events or the important contributions of <br />persons significant in history, historical resources more than 50 years old are <br />evaluated under essentially the same criteria as prehistoric resources. <br />Based on information available from files searches and previous research <br />experience in the area, .MAC anticipated that prehistoric and historic cultural <br />resources would be present in small numbers in the survey area. As noted above. <br />farming, ranching, and mineral exploration sites were considered most like to <br />occur in the upland areas. It was anticipated that some prehistoric materials <br />might be discovered in these upland areas. but prehistoric cultural materials <br />were considered more likely in the Yampa River Valley portion of the survey. <br />Field Methods <br />The Class III cultural resource inventory of the proposed was conducted by <br />intensive pedestrian survey. Special attention was given to areas of enhanced <br />subsurface visibility such as erosion cuts, road ditches, anthills, and the <br />backdirt of animal burrows. The majority of the survey area was in cultivated <br />fields that provided excellent surface visibility and exposure of subsurface <br />materials. Surface visibility and weather were good to excellent for the <br />discovery and identification of cultural resources. <br />A 300 foot wide corridor was surveyed for the proposed seismic line to <br />allow for movement through irregular terrain and around fences. This corridor <br />