Replace Spacer Dampers Along the Ostrander-McLaughlin Number 1 500-Kilovolt Transmission LineCX(s) Applied: B1.3Date: 09/29/2010Location(s): Clackamas County, OregonOffice(s): Bonneville Power Administration
Office of NEPA Policy and Compliance
September 29, 2010
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CX(s) Applied: B1.3
Date: 09/29/2010
Location(s): Clackamas County, Oregon
Office(s): Bonneville Power Administration
Bonneville Power Administration (BPA) has a need to replace old and worn spacer dampers on the Ostrander-McLaughlin Number 1 500-kilovolt transmission line (approximately 9 miles). Spacer replacement is a routine maintenance activity conducted from manned aerial carts placed on the transmission line conductor either by helicopter or line truck. First, carts would be placed on the conductor; crews would then access the carts to perform the work. Once changed out, old spacers would be transported to a pickup area before being sent to a recycling center. Minimal ground support would be needed and all surface vehicles would be restricted to the existing access roads. The proposed project is necessary to maintain reliability along BPA?s transmission system. All work would be in accordance with the National Electrical Safety Code and BPA standards.