News release City of Coos Bay. The City has commenced construction of a new wastewater treatment plant at the northeast corner of Fulton Avenue and Empire Boulevard. The construction has been ongoing for several months now, and it is anticipated to be completed by September 2018. This weekend, the City’s contractor will be setting concrete forms in preparation for pouring slabs the following week. Should you have any concerns or questions please contact Jan Kerbo, the City’s on-site Resident Project Representative at 541-269-1181 extension 2206.