The Chattanooga City Council recently approved a $7.8 million project to seal pipes from East Brainerd to the edge of Ooltewah, one of the biggest projects in the long list of federally mandated fixes to the city's 130-year-old sewer system.

Most of the work sealing 50,000 linear feet of pipe won't interfere with neighborhoods or create many traffic problems because officials said they can use manholes to avoid digging up most roads.

The council faces a series of large, costly decisions across the city, from fixing hundreds of miles of underground sewer lines to planting trees, to stop a historic neighborhood's flood woes and fix a leaking sewer system.

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