CX-018951: Sammamish-Maple Valley #1 230-kilovolt Urgent Work in Line Miles 13-28 (Update to previous categorical exclusion issued July 28, 2018)

Categorical Exclusion Determination

Office of NEPA Policy and Compliance

September 14, 2018
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Bonneville Power Administration is currently performing the work outlined in the Categorical Exclusion issued July 23, 2018. Additionally, Bonneville Power Administration proposes to replace conductor hardware and insulators on structures 20/5, 21/3, 22/1, 23/4, 23/5, 25/3, 26/8, 27/2, 29/2, and 29/4 of the Sammamish-Maple Valley#1 230-kilovolt transmission line. Structures 23/4 and 23/5 would require adding rock to the existing access roads. Bonneville Power Administration also proposes to replace the conductor between structures 17/5 and 18/1.