Client: Evansville Water and Sewer Utility

Location: Evansville, Indiana

Donohue was selected to provide planning, design, bidding, and construction phase services for the Evansville Eastside WWTP Effluent Pumping Station. The Effluent Pumping Station is designed for a peak pumping capacity of 40 mgd to pump treated effluent from the Eastside WWTP to the Ohio River. The treated effluent will be pumped via two force mains over the Ohio River levee and discharge to a cascading aeration structure.

The pump station includes site piping and diversion structures to route flow from the gravity flow sewer to the new effluent pump station, variable speed controls for all pumps, electrical and control equipment in an unrated space, an emergency generator system, automated and a control system with telemetry compatible to the Utility’s existing SCADA. In addition, since the new Effluent Pumping Station will be constructed in Sunrise Park, aesthetic park restoration and improvements is an important aspect of this project. This effort requires engaging multiple stakeholders. The stakeholder engagement process was conducted with multiple stakeholders as identified by the City of Evansville, and the Donohue team provided support documents and technical assistance to develop the desired approach for park rehabilitation and final restoration.

Extensive permitting support includes facilitating discussions with IDEM and USEPA regarding the sampling locations, outfalls and permitting requirements for the various CSO and treatment plant discharges for the East WWTP IOCP components; organizing and conducting a combined permitting coordination meeting with the Utility, IDEM and USEPA to determine NPDES permitting requirements prior to construction; and assisting the Utility in preparing documentation for NPDES permit modifications.