PORTSMOUTH, N.H. — The Portsmouth City Council in New Hampshire voted to comply with a mandate from the Environmental Protection Agency (EPA) to meet secondary treatment standards at its wastewater treatment plant, according to Seacoastonline News.

The city will use a new technology called biological aerated filter at the Peirce Island Wastewater treatment plant that will fit within the plant’s current fence line, stated the article.

The new technology will help reach a total nitrogen limit of 8 milligrams per liter on a seasonal rolling average basis.

This vote brings the city one step closer to coming into compliance with a consent decree from the EPA, noted the release.

Designs are in the process for a new $75.6 million plant on Peirce Island, which includes maintenance and operations fees for 20 years.

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