An approximately four-mile-long, 18-ft-diameter and 200-ft-deep
tunnel to mitigate storm water and combined sewer overflow into the Connecticut River and Long Island Sound is slated to begin construction this month.
The U.S. Dept. of Justice, the U.S. Environmental Protection Agency and the Maryland Dept. of the Environment have proposed lengthening the current deadline for Baltimore to eliminate wet-weather overflows from its sewer system.