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East Side Combined Sewer Overflow ESCSO

Portland, United States

Start of construction: May 2005
Construction volume (value of our services): 517,334 M CHF Costs converted according to average yearly exchange rates during project realization

As the largest of all Portland’s projects to reduce overflows into the Willamette River, the East Side Combined Sewer Overflow tunnel is designed to significantly reduce sewage and storm water overflows. To reduce risk exposure…