Multnomah County, OR Underwater Utility Directional Bore Gravity Sewers provides Multnomah County, OR with underground and underwater utility infrastructure construction services via Horizontal Auger Boring, Tunneling and Horizontal Directional Drilling (HDD) more commonly called Directional Boring. We provide underground utility construction services specializing in the underground boring of utility pipelines for electric power, solar, wind, … Continue reading Multnomah County, OR Gravity Sewers