Last week, the City Council approved giving Bellingham-based BOSS Construction Inc. the contract to build the biological filtering system for the wastewater treatment plant.
The devices produce more bacteria which feeds on sewage. This reduces pollutants and decrease the levels of nitrogen in the river.
This method has not been tried before in the state and the city hopes the devices will help Snohomish comply with state and federal guidelines.
Construction is scheduled to start in late January and work should be finished by the end of November, City Manager Larry Bauman said.
"It's definitely our biggest project for next year," Bauman said.
BOSS' $4.75 million bid was the lowest of eight bids received by the city. Around 75 percent of the costs are being paid for by the state, Bauman said. The city could pay up to $1.3 million from its utility fund.
If the devices are successful, the city can get an extension from the state Department of Ecology on the deadline to comply with environmental regulations. This can help lower costs and avoid sewer rates increases, Bauman said.
The plant is located west of Highway 9, just north of Snohomish River.
In June, the city finished adding three half-mile sections of pipeline from the historic downtown area to reduce sewage from spilling into the river. The last project is the building of a pipeline to Everett's wastewater plant. This is scheduled to start in 2016.
Alejandro Dominguez: 425-339-3422; email@example.com.
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