Historic and Cultural Resources <br />For the proposed federal courthouse project, researchers gathered background information <br />regarding previous cultural resource studies and inventoried cultural resources located in the <br />vicinity of the alternative courthouse sites. Background research on individual properties was <br />carried out, and information regarding the historical development of Eugene and Springfield was <br />reviewed. In addition, historic properties in Eugene and Springfield were inventoried. <br />The research included the construction and renovation of buildings, their uses, demolition, and <br />the development of surface parking lots on the alternative sites. Research sources included the <br />following: <br />• Oregon State Historic Preservation Office <br />• Oregon Cultural Resource Inventory <br />City of Eugene Planning Department and Historic Preservation Program <br />• City of Springfield Planning Department <br />Lane County Tax Assessor <br />• University of Oregon libraries <br />• Eugene and Springfield public libraries <br />• Historic Springfield Interpretive Center <br />• Sanborn fire insurance maps <br />• Numerous historical records, maps, and aerial photographs. <br />- For the purpose of analyzing potential impacts on historic and cultural resources, the "area of <br />potential effect" is defined as the geographic area within which the undertaking may cause <br />changes in the character or use of historic properties (36 Code of Federal Regulations [CFR] <br />,.. <br />800.2(c)). In consultation with the Oregon State Historic Preservation Office, the area of <br />potential effect for evaluating impacts of the proposed courthouse project was delineated to <br />include each alternative site and the entire city blocks adjacent to each of them. The area of <br />potential effect for archaeological deposits consists of the area within the alternative sites, <br />'' including both the surface and the subsurface disturbance area to the depth of potential <br />construction disturbance. <br />Criteria established by the National Register of Historic Places serve as the basis for evaluating a <br />property's eligibility for historic landmark designation at the national, state, and local levels (36 <br />CFR 60.4): <br />The quality of significance in American history, architecture, archaeology, and <br />culture is present in districts, sites, buildings, structures, and objects that possess <br />integrity of location, design, setting, material, workmanship, feeling, and <br />association, and. <br />a) that are associated with events that have made a significant contribution to <br />the broad patterns of our history; or <br />New Federal Courthouse 63 Final EIS <br />