DC Water, National Park Service, Community Groups Celebrate Fresh Air Along Potomac Interceptor

May 30, 2013

It’s been more than a decade in the making but the day has finally arrived. Join DC Water, the National Park Service and various community groups as they cut the ribbon on a series of odor scrubbing facilities that keep the air fresh along the Potomac Interceptor Sewer and C&O Canal. The facilities are enabling DC Water to remove the majority of the vents along the Potomac Interceptor that vent sewer gases to the air. Already, half the vents have been closed.

Visuals include new facilities, a ribbon-cutting and the scenic C&O Canal.

Who:
• DC Water Board Chairman Allen Y. Lew
• DC Water Board Member and Montgomery County Department of
Environmental Protection Special Assistant David W. Lake
• DC Water General Manager George S. Hawkins
• National Park Service Superintendent Kevin Brandt
• Cabin John Citizens Association President Burr Gray

When: Tuesday, June 4, 2013
11:00 a.m. Speaking Program
11:30 a.m. Ribbon-cutting and tour of odor scrubbing technology

Where: Fletcher’s Boathouse
4940 Canal Road, NW
Washington, DC
Limited parking for live feed trucks at the site.

Latest News

View of Mary at bottom of shaft inside tunnel shown from above

First turn of cutterhead signals the start of excavation for the Potomac River Tunnel Project

In a defining moment for one of the District’s largest infrastructure investments, DC Water has marked its next major milestone in the Potomac River Tunnel Project. The first tunnel boring machine, Mary, has launched her northbound journey breaking through the soil to signal the start of excavation.

With the first turn of Mary’s drill-like cutterhead underground, the machine pushed forward to begin tunneling, representing the transition from years of planning and preparation to active tunnel construction on the $819 million project.

Photo of the vegetation growing back in the culvert area
  • DC Water has completed soil removal, utilizing excavators and manual digging, to expose the clay lining for the C & O Canal between locks 13 and 14. This is the final step in the clean-up process ...
Workers manually removing soil between the locks

Work is progressing on the clean-up for the C & O Canal which was used as a bypass while the Potomac Interceptor was repaired. Workers are focused on removing sludge between locks 11 and 12. Soil removal is also nearly complete between locks 12 and 14, reaching the canal's clay liner. Workers are now manually removing additional materials in some areas.

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

View of Mary at bottom of shaft inside tunnel shown from above
DC Water Launches Tunnel Boring Machine Mary, Marking Important Step for Potomac River Tunnel Project

First turn of cutterhead signals the start of excavation for the Potomac River Tunnel Project

In a defining moment for one of the District’s largest infrastructure investments, DC Water has marked its next major milestone in the Potomac River Tunnel Project. The first tunnel boring machine, Mary, has launched her northbound journey breaking through the soil to signal the start of excavation.

With the first turn of Mary’s drill-like cutterhead underground, the machine pushed forward to begin tunneling, representing the transition from years of planning and preparation to active tunnel construction on the $819 million project.

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A helicopter lowers a drill rig to workers on the Potomac River.
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When one of your major sewer lines runs through the Potomac River, a backhoe and trencher won't do. That's why we've got helicopters carrying a 14-ton drill and workers suspended midair over the Potomac.
Upcoming Meeting
Date
April 15, 2026
Wednesday, 9:30 AM

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