You are here

CX-008677: Categorical Exclusion Determination

Columbia and Willamette River Crossings Liquefaction Hazard Assessment
CX(s) Applied: B3.1
Date: 07/23/2012
Location(s): Oregon, Oregon, Washington, Washington
Offices(s): Bonneville Power Administration

Bonneville Power Administration (BPA) proposes to perform geotechnical testing at four transmission line river crossings on the Columbia and Willamette rivers. Geotechnical testing would assess the capacity of the soils in these areas to undergo liquefaction. Results of the testing would be used evaluate the need for seismic hardening of the transmission towers in these areas.