Overview

To address chronic flooding and water contamination during heavy rain events, the City of Warren constructed a 22-million-gallon reinforced concrete detention basin along Stephens Road. The new combined sewer overflow (CSO) system captures and temporarily stores stormwater and wastewater, preventing untreated discharges into local streams and rivers. Once capacity becomes available at the wastewater treatment plant, the stored water is safely processed and returned to the environment.

Challenges/Solutions:

Commercial Contracting Company (CCC) brought G2 Consulting Group onto the project team to provide geotechnical engineering services, including slope stability design for the 20-foot-deep excavation. G2’s analysis ensured safe and efficient construction of the basin’s subgrade structure.

The detention basin required over 40,000 cubic yards of concrete. G2 provided quality assurance and materials testing services throughout construction to ensure compliance with specifications and long-term durability of the structure.

By diverting combined sewer overflows into the detention basin, the project significantly reduces the risk of water contamination in local waterways, improving environmental outcomes for the community.