South Magnolia CSO Tank
Construction of a buried combined sewer overflow (CSO) reservoir.
- Excavation to 25 feet below sea level on the shore of Puget Sound.
- Included a monolithic concrete pour of 5,000 CY.
- Contaminated soils removal.
- SJC designed a shoring system that allowed for a 35 foot deep excavation, 120 feet wide by 300 feet long with no cross bracing.