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EIS-0436: I-5 Corridor Reinforcement Project; Multnomah County, Oregon, and Cowlitz and Clark Counties, Washington


DOE’s Bonneville Power Administration (BPA) is preparing an EIS that will evaluate the potential environmental impacts of a BPA proposal to build a 500-kilovolt (kV) lattice-steel-tower transmission line that would run from a new 500-kV substation near Castle Rock, Washington, to a new 500-kV substation near Troutdale, Oregon.  

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