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Vantage to Pomona Heights Chapter 3 230 kV Transmission Line Project FEIS Affected Environment PAGE 3-249 • Emergency discoveries. • Reporting. • Native American consultation. Before construction, Pacific Power would arrange for an intensive pedestrian cultural resource survey on all federal and state lands and on private lands where permission of the land owner has been granted prior to survey. Survey would be conducted within all areas of possible physical disturbance within the APE of the selected Action Alternative following the terms of the PA. The APE for the Project includes all involved federal, state, and private lands and will include: • The transmission line right-of-way (ROW) along the centerline; • Any existing unpaved access roads or existing roads that may require improvement and new roads; • Staging areas, laydown areas, pulling and tensioning areas, and any other temporary use areas; and • Geotechnical drilling boring locations and new or improved access roads to the drill sites. APE dimensions have been determined by the BLM and appropriate land managing agencies. The APE for assessing visual effects on cultural resources will extend no farther than 3.0 miles from the centerline of proposed transmission line ROW for the selected route. Certain classes of visually sensitive cultural resources, such as TCPs, beyond the 3.0-mile indirect APE may require analyses to assess visual effect. The BLM will consult with the Tribes, DAHP, and other Signatories to determine whether a change in the visual APE is necessary for these cultural resources. The BLM, in consultation with the other parties to the PA, will develop and implement specific measures to mitigate adverse effects. These may include Project modifications to avoid adverse impacts, monitoring of construction activities, and data recovery studies. Other treatment measures could include, but will not be limited to, data recovery, completion of National Register nomination forms, Historic American Building Survey/Historic American Engineering Record/Historic American Landscape Survey documentation, and creative mitigation options including video, podcasts, and support of Electronic Section 106 applications. 3.11.4 Route Segment Specific Considerations As previously stated, for the purpose of this FEIS, the Project study area for the cultural resource analysis included both a 150-foot wide corridor (75 feet to each side of the Action Alternative route segment centerlines) and a 500-foot wide corridor (250 feet to either side of the Action Alternative route segment centerlines). It is anticipated that physical impacts to cultural resources would be limited primarily to the 150-foot corridor because this corridor would include the structures and most access roads. Because of the limited number of recorded cultural resources and limited amount of survey within the narrower corridors of some segments, the 500-foot corridor is used to provide a better picture of the range and density of cultural resources that could exist within the unsurveyed portions of the 150-foot corridor. However, the majority of the NNR Alternative has been previously surveyed for cultural resources and portions of some route segments have been surveyed recently by the YNCRP. The number and types of cultural resources were documented and the surveyed acreage within the corridors was calculated for each of the route segments for each Action Alternative (Table 3.11-1). Also, the TCP report was reviewed to determine if any resources of particular concern to Native Americans were located within the corridors.