March 26, 2013

Project marks milestone for cleaner Back Cove

By Randy Billings rbillings@pressherald.com
Staff Writer

PORTLAND — City officials and environmentalists marked a milestone Monday in Portland's efforts to reduce the amount of raw sewage discharged into Back Cove.

click image to enlarge

A section of conduit is lowered beneath Baxter Boulevard Monday morning in Portland after a news conference to highlight the benefits of the Baxter Boulevard North Storage Conduit project. The project involves the installation of underground storage tanks, each of which will be able to store up to 1 million gallons of combined sewage and stormwater that can be sent to the East End Wastewater Treatment Facility instead of being discharged untreated in Back Cove.

Tim Greenway / Staff Photographer

Crews began installing one of two concrete conduits, each capable of storing one million gallons of sewer and storm water during significant rainstorms to prevent polluted overflow from entering the cove. 

Portland Mayor Michael Brennan, representatives from the Maine Department of Environmental Protection, the city’s Department of Public Services, Friends of Casco Bay, and the Casco Bay Estuary Partnerships were on hand to mark the milestone.

One tank is being installed under Baxter Boulevard and another is being placed beneath Payson Park. The tanks will store the sewer and storm water until it can be pumped the East End Treatment Plant to be treated.

The project is part of a multi-year plan ordered by the federal government to reduce the number of combined sewer overflows in the city, which discharge raw sewage into nearby waterways during rain storms.

From 1993 to 2010, the city has spent $100 million to reduce annual sewer overflow volumes by 42 percent from 1993 levels of 720 million gallons to 420 million gallons.

The city recently adopted a plan to invest $170 million to further reduce sewer overflow volumes to 87 million gallons annually. This plan is set to begin in 2014.

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