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Vantage to Pomona Heights Chapter 2 230 kV Transmission Line Project FEIS Proposed Action and Alternatives PAGE 2-66 200-foot tall steel lattice structure would be located on the west bank of the Columbia River on BLM- administered land. The line would cross Huntzinger Road and the Columbia River to a steel lattice structure on the east side of the river located on Reclamation land. The Columbia River crossing would be approximately 2,800 to 3,000 feet in length depending on the final location of the steel lattice structures. Route Segment NNR-8 would proceed east, crossing SR-243 and then proceed north and east for 1.7 miles crossing the Grant County PUD Priest Rapids-Vantage 230 kV Transmission Line and the BPA Vantage-Hanford No. 1 500 kV transmission line before turning north, crossing the BPA Vantage- Hanford No. 1 500 kV Transmission Line and entering the Vantage Substation. Crossing of SR-243 would require a Utility Permit from WSDOT. The transmission structures would not be placed within either the highway ROW or WSDOT’s Control Zone. This Route Segment is being considered for overhead construction only. The total length of Route Segment NNR-8 is 2.7 miles. Route Segment MR-1 would begin at the northern node of Route Segment NNR-3 and cross the existing Pacific Power Pomona-Wanapum 230 kV Transmission Line west of I-82. It would then proceed northwest, crossing privately owned land and DNR state trust land, roughly paralleling I-82 approximately 0.5 to 1.0 mile to the west. The route segment would cross I-82 just south of the designated Manastash Ridge Viewpoint (located at Milepost 8.1) into JBLM YTC. This interstate crossing would involve the placement of a new transmission line structure on private land on the west side of I-82 directly south of the west-bound Manastash Ridge Viewpoint. The other new transmission line structure would be placed on the eastern side of I-82 on JBLM YTC. The crossing length would be approximately 1,270 feet. Conductor to ground clearance of this interstate crossing would be a minimum of 34 feet according to WSDOT. No structures would be placed within the interstate ROW. A detailed map showing the location of Crossing #3 is provided as Figure 2-14. After crossing I-82, this route segment would cross Manastash Ridge and proceed southeast within JBLM YTC south of Badger Pocket. Route Segment MR-1 would then cross the existing Pacific Power Pomona- Wanapum 230 kV Transmission Line and terminates at the western node of Route Segment NNR-5. This route segment is being considered for overhead construction only. Route Segment MR-1 would cross Reclamation’s proposed Wymer Dam and Reservoir Project for approximately 0.05 mile. Mitigation land acquisition and habitat enhancement components are intended to result in a net improvement in conditions for Sage-Grouse with the proposed Wymer Dam and Reservoir Project. Approximately 3.2 miles of Route Segment MR-1 crosses private land targeted for mitigation acquisition to offset impacts from the proposed Wymer Dam and Reservoir Project. The total length of Route Segment MR-1 is 11.9 miles.