NBC Phase II Stormwater Program
Providence, Rhode Island
This project is part of the Narragansett Bay Commission’s (NBC) Phase II program to control combined sewer overflows (CSOs) within its district. The primary objective of this project was to provide flow reduction and capacity modifications to reduce overflows at OF-027 and OF-037 to less than four events per year.
The project includes the installation of approximately 40,000 linear feet of new storm drains, including new catch basins and drainage manholes. New catch basins will be installed to replace existing catch basins. To enhance the quality of the water prior to discharge, the catch basins will utilize 4-foot sumps and incorporate water quality hoods. The project will also include installation of approximately 18,000 linear feet of new water mains.
The work includes curb to curb roadway resurfacing / pavement rehabilitation for 38 streets within the entire project area, including North Main Street (Route 1) a major arterial and collector roadways such as Hope Street and Blackstone Boulevard. Pavement markings, curbing, and sidewalk areas impacted by the utility installations will be restored in accordance with City standards.
The project involved extensive coordination with local and state agencies including the City of Providence, RIDEM, RIDOT, various utility companies and Miriam Hospital.