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Section 106 of the National Historic Preservation Act, as it pertains to the administration of the Federal-Aid Highway Program in California effective January 1, 2004. Most of the area is highly disturbed or built-out, and preliminary geology information indicates at least portions of the interchange area are on fill, which reduces the potential for native soils and cultural resources presence. The scope of work is detailed below. Subtask 5.4.1—Area of Potential Effect(APE)Development The Area of Potential Effects (APEs) for archaeology and architecture will be set once the area of construction is established, temporary easements and permanent property takes are identified, and project structures that might affect neighboring properties are identified. The archaeological APE is generally the proposed project area, while the architectural APE may also include structures adjacent to the project area. For purposes of this project, it is anticipated that the architectural APE would be the right-of-way, and expanded to adjacent parcels only in areas where there would be temporary or permanent easements or new structures adjacent to the right- of-way that have a notable visual effect to the adjacent property. The Programmatic Agreement (2004)requires that approval of the APE by Caltrans, which CONSULTANT assumes will occur prior to the scheduled performance of any field evaluations. Significant changes in the APE during the project would reyuire subsequent survey or documentation, which is not included in the scope or budget. CONSULTANT assumes two rounds of revisions of the APE maps with Caltrans staff. Subtask 5.4.2—Background Research The pre-field research procedures will include the an archival search through the California Historical Resources Information System (CHRIS), research in various archives, and a review of various published compendiums including the National Register of Historic Places, local historic lists, and pertinent materials on file with CONSULTANT (e.g., locally relevant prehistoric and historic lists, references, and so on). Previously completed cultural resources reports prepared for this area and additional sources will be consulted as necessary. For the purposes of completing the historical resources evaluation, research will be undertaken at, but not limited to, the California State Library, Sacramento; Caltrans Records and highway plans; the Shields Library at the University of California, Davis; San Mateo County Historical Society, and local sources identified during research. Subtask 5.4.3—Field Reconnaissance Archaeological Resources A field inventory of the archaeological APE will be performed. Based on the developed and disturbed nature of the project area, and information on this project, there has been no indication that any known archaeological or historic sites are present in or near the right of way. CONSULTANT assumes for purposes of budgeting that no archaeological resources would be identified within the APE. If archeological resources are identified during the survey or records search, additional evaluation would be necessary and is not included in this scope of work. The project's potential vertical disturbance must be investigated in to determine whether buried archaeological resources could be affected. CONSULTANT will perform a geoarchaeological study based on available sources including geological maps, soils data, and literature on Bay Area landscape evolution. CONSULTANT assumes that Caltrans' current evaluation of ATTY/AGR/2013.164/URS PROFESSIONAL SERVICES AGR REV:10-15-13 VR � Page 41 of 7`?