Water Resources GLWA West Service Center Reservoir Pump House Division and Valve Replacement

The construction of two new 5-million-gallon (MG) wire-wound, prestressed concrete storage differed from the base concept of locating new tankage within the envelope of the existing 10 MG reservoirs. Through the Kokosing Team’s design-build process, the height and diameter of the tanks were adjusted from the original concept to fit within the available space, yielding a $1 million savings, reducing the overall schedule by approximately 1 year, and mitigating the need for service disruption.

A new 25-foot deep, tri-level reservoir pump house contains three transfer pumps providing 60- MGD firm capacity to the system. Kokosing’s Central Engineering Group designed an earth retention system to protect the existing reservoirs, creating safe working access for Kokosing workers.

The final phase of the project was the demolished two, c. 1960s 10 MG covered concrete tanks at the end of their useful life. Demolished concrete materials were crushed on-site and used as backfill.

The Kokosing Industrial Design-Build team developed and constructed two new 5 million gallon finished water reservoirs and pumping station – a design which improved upon the original design concept. In comparison with the original concept, the new design substantially lowered cost, shortened construction schedule, all while maintaining service to roughly 300,000 Great Lakes Water Authority customers.