Forging a new path deep in the river

Learn more about geotechnical drilling and soil sampling details from Portland Water Bureau Engineer, Tim Collins. Article published by the Daily Journal of Commerce.

A drill rig on a barge operated by Mark Marine is currently taking soil samples from beneath the Willamette River as the Portland Water Bureau pepares to construct a pipeline underneath the river near the Hawthorne Bridge. (Josh Kulla/DJC)