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kevin keane

steve carmody / Michigan Radio

A major project to remove century old contamination from the Flint River is moving into its final phase.

Last week, crews finished dredging part of the Flint River bottom to remove the last remnants of coal tar from the sediment. The coal tar came from a coal gasification plant that shut down in the 1920s.

steve carmody / Michigan Radio

A major dredging project in the Flint River remains on schedule.

Consumers Energy is paying to remove tons of coal tar waste along a third of a mile stretch of the river in downtown Flint. The coal tar waste is the legacy of a gasification plant that closed almost a century ago. 

Consumers spokesman Kevin Keane says crews recently started using a so-called “moon pool” as part of the dredging work.

“The moon pool is used to contain excavations in the river and it collects sheen and sediments that otherwise might travel over the dam,” says Keane.

steve carmody / Michigan Radio

A major river dredging project is nearly ready to begin in downtown Flint.

In about two weeks, crews will begin removing river sediment contaminated with coal tar from a section of the Flint River.   The coal tar was a by-product produced by a gas plant that was located along the river a century ago. Consumers Energy bought the plant in the 1920s.  The utility is handling the cleanup.