![Portland Oregon Transmission Line](https://archive-utilpole.forestry.oregonstate.edu/sites/default/files/UPRC%20Website%20PDX%20Transmission%20LIne%20Image%20%28smaller%29.jpg)
Bonneville Power Administration
Copper Care Wood Preservatives Inc.
Intec Services Inc. (Pole Care Inc.)
McFarland-Cascade (Stella-Jones Inc.)
Osmose Utilities Services, Inc.
Portland General Electric Company
Snohomish County Public Utility District
The Pentachlorophenol Working Group