News Flash

Water Resources

Posted on: March 17, 2022

Construction Update on Back Cove


3/17/22-  Unitil will be starting work on Dartmouth Street Monday 3/21/22.  Portland Water District will be installing a temporary water line on Dartmouth Street at the beginning of April.  Work on the storm drains and sewers will start at the end of April.  This will continue throughout the summer months and into September. 

For more information on the Back Cove West Storage Conduit and an overview of the Project Timeline  https://www.portlandmaine.gov/2577/Back-Cove-West-Storage-Conduit

3/9/22- Update on the Back Cove South Storage Facility-  Crews are continuing to progress on the Back Cove project.  The concrete base of the diversion structure was poured and the walls have begun to form with for the pipe connections.  Installation from the Exit 7 Franklin Street area towards the tanks has begun.  Current images of the project will show the tank riser as well as the upper cross beam support that was place this week.  https://www.portlandmaine.gov/2540/Back-Cove-South-Storage-Facility

1/13/22-  The work to reduce overflows is part of the City’s agreement with the U.S. EPA to not only reduce, but ultimately eliminate, the flow of combined waste being discharged into our water.  A combined sewer system transports wastewater from homes, industries and businesses, as well as storm water collected from streets, parking lots, roofs and yards to the East End Wastewater Treatment Plant.  A combined sewer overflow occurs when the combined sewer capacity is overwhelmed during heavy rain and a mix of sewer and storm water is then discharged into Back Cove.

The work includes the installation of a 2.25-million-gallon storage conduit.  The project also involves new diversion structures, local sewers and storm drain improvements.  In addition to the installation of drainage outfalls that discharge into Back Cove, there is ongoing work with water main replacement on Dartmouth Street and utility work at the intersection of Forest Avenue and Dartmouth Street.

As of this update, the 60-inch sewer pipe installation has been completed and around 250 feet of the conduit has been installed.  The contractor continues to work on installing drainage within the completed pipe sections and once all of the utilities are in place, the road will be rebuilt and paved.  The section of Baxter Boulevard from Dartmouth Street to Vannah Avenue is scheduled to reopen to vehicle traffic in June of 2022.  The section of the Boulevard that spans from Vannah Avenue to Payson Park will remain closed until June of 2023.  Sargent’s subcontractors continue to blast ledges within the area as well as installing sheet piling for the new box conduits.  The blasting contractor is on George St currently, heading towards Vannah Ave. 

The Portland Water District is also completing a significant update to their sewer pump station which is nearby on the Boulevard.  Due to this, large external pumps and pipeline will divert the flow of sewage around the station to a manhole located on the Back Cove walking path.  This temporary solution will remain active for the next 4-6 months.  Questions regarding this can be directed to the Portland Water District’s Project Manager, Helen Newman, at 207-523-5279.

If you have specific questions or concerns, please contact Nathaniel Smith, Project Engineer at 207-874-8818 or nhs@portlandmaine.gov

Full project schedule, Updates and Graphics
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