Hazel will dig a 12-foot-wide, 2-mile-long tunnel to divert approximately 120 million gallons of sewage annually away from Alexandria’s waterways.
A new 380-ton, 14-foot 8-inch tall tunnel boring machine (TBM) named Hazel has been unveiled by AlexRenew — Alexandria, Virginia’s wastewater authority — marking a significant milestone in its RiverRenew program to improve local waterways.
Making its way from Schwanau, Germany,...
