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Negative Results Report <br />Cultural Resource Survey <br />Mountain Coal's Sunset Trail Lease Modifications Permit Revision #PR -15 <br />Gunnison County, Colorado <br />would diminish eligibility under Criterion C. The aspects of feeling and setting are intrinsically linked <br />such that suburban development and modern intrusions may diminish the significance of ranching and <br />agricultural complexes. <br />ERO uses the following generalized approach to assess integrity under Criterion D. Most archaeological <br />sites are considered in their original location unless post -depositional processes, such as erosion, have <br />transported artifacts away from their original context. Artifacts can also move both vertically and <br />horizontally in subsurface contexts diminishing the aspect of location. The site retains location if no <br />significant post -depositional processes have altered the primary context of the artifacts. The aspect of <br />design is present if the relationship between features or activity loci is apparent and the spatial <br />organization of the site is discernible; design may also be present in highly formalized tools such as <br />projectile points, ceramic vessels, architecture, or individual features. Setting refers to the surrounding <br />physical environment of a site, which may be affected by modern development or changes to the <br />natural environment (such as important biotic species) through climate change or modern development. <br />Setting is considered intact if the surrounding environment is similar to the environment during the time <br />of occupation. The aspect of materials is almost always retained due to the nature of the archaeological <br />record and the material culture that is inherent to archaeological sites. If there were no physical <br />artifacts or features (i.e., materials) present, there would not be a site. Workmanship is retained by the <br />presence of artifacts, architecture, or features emblematic of a particular culture or people such as a <br />Puebloan kiva or Clovis projectile point. The aspect of feeling is difficult to ascertain for archaeological <br />sites and is often dependent on Native American perspective. Very little of the physical features present <br />during occupation of a prehistoric site still exists in the present to convey a property's character. A site <br />that retains association can be linked to a particular cultural -historical period through the presence of <br />diagnostic artifacts, architectural elements, or chronometric means. <br />Each documented cultural resource described below is provided a recommendation of NRHP eligibility <br />and evaluated for project effects. The lead agency will provide a determination of eligibility for each <br />documented cultural resource based on ERO's recommendation and will provide a determination of <br />project effect on historic properties. The lead agency will then provide SHPO an opportunity to review <br />and provide comment regarding NRHP eligibility and project effects per 36 CFR 800.4 through 800.5. If, <br />during consultation between the lead agency and SHPO, a determination of "adverse effect to historic <br />properties" occurs, further consultation is required to resolve adverse effects. <br />File and Literature Review <br />ERO conducted a file and literature review for the project using the OAHP online compass database and <br />information from GMUG on July 18, 2018. ERO included a 1 -mile buffer of the APE. The file search <br />identified 24 previous inventories within 1 mile of the survey area (Table 2). Previous cultural resource <br />surveys in the region are related to Mountain Coal's lease modifications, temporary road construction, <br />and drill hole locations. Other resource surveys were conducted for prescribed burns, fence <br />construction, and ditch repairs. Eleven of the previous surveys overlap the current APE. <br />ERO Project #10145 11 <br />