Part of DC Water’s Capital Improvement Project, a 10-year, $7.7B water and sewer system upgrade, BC, along with Somat Engineering, 7NT Engineering, TYLin, and Delve Underground, is assisting the utility with geotechnical investigations to rehabilitate Potomac Interceptor, a 54-mile aging sewer line that cuts across the Potomac River at Great Falls National Park from Virginia to Maryland to DC Water’s advanced wastewater treatment plant.

This once-in-a-lifetime project is no easy feat. As work began late January, drilling rock core samples as deep as 50 feet in a raging river required some blue-sky thinking to get a 14-ton drill and workers across five boring locations safely and successfully. Cue the chopper, a helicopter like those used to fight wildfires.

With 60 million gallons of wastewater daily, the Potomac Interceptor is critical to building reliability and sustainability for the growing area’s infrastructure. “We’re proud to assist DC Water safeguard the environment and keep its community healthy and thriving for generations to come,” BC Principal in Charge Jay Kirk said.

Learn more: Potomac Interceptor Project | DC Water