Century West provided design and funding assistance services for a new wastewater treatment facility in the City of Airway Heights. The treatment process is an extended aeration activated sludge system with biological nitrogen and phosphorus removal. Final treatment includes membrane filtration to meet Class A reclaimed water standards. The treatment plant provides reclaimed water to customers and for recharging groundwater. Services provided include complete design, coordinating with the City, Department of Ecology, and Department of Health reviews, establishing design criteria, obtaining permits, and completing environmental documentation.
The project received DOE/DOH approval. Our firm assisted the City in obtaining the necessary funding, approximately $42 million to construct the facilities. Funding for the project included grants and loans from: WSDOE, Centennial Cleanwater, American Recovery and Reinvestment Act, USDA Rural Development, Public Works Trust Fund, WSDOE-SRF, and legislative appropriation. Century West provided full construction monitoring and contract administration for this complex multi-year construction project.