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Road Reconstruction: E. Colvin Street

Status: Completed
GI Technology: Bioswale
Project Year: 2018


*TOTAL cost



Project Description: The East Colvin Street Road Reconstruction project exemplifies the continued partnership between Onondaga County Save the Rain and the City of Syracuse Department of Public Works for the inclusion of green infrastructure in road reconstruction work. This application, within the CSO 060/077 area, is intended to reduce pollution to Onondaga Creek and Onondaga Lake.

The project is installing six separate underground infiltration trenches spanning East Colvin Street between Jamesville and Comstock avenues. Each underground infiltration trench has varying widths, lengths and depths. This is due to multiple factors such as avoiding conflicts with water, sewer or electrical utilities. Stormwater runoff will be captured from the street new and existing catch basins, allowing the water to infiltrate into the stone storage and soak into the ground. High flows from heavy rain storms (above one inch over two hours) will flow back into the combined sewer system for safety. The streetscape will not look different after the work is complete, as the trenches are completely underground with no visible features at the surface. In 2017, three of the six infiltration trenches were constructed, with the remaining three to be constructed in Spring 2018. When complete, this project will manage runoff from 122,060 square feet of impervious drainage area, equating to approximately 2,149,700 gallons of stormwater runoff annually, within the high priority area of CSO 060/077.

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