Specifications include, but are not limited to: The City of Portsmouth’s Department of Public Works is requesting Statement of Qualifications (SOQs) from qualified firms to provide engineering design services for the preliminary and final design of an upgrade of the existing aeration blowers at the City’s Pease Wastewater Treatment Facility. The preliminary design will include developing a phased approach to upgrading the existing 4 rotary lobe positive displacement aeration blowers to increase air supplied and improve operational efficiency. The final design will include preparation of construction contract documents for the replacement of 2 of the existing blowers, including the development of an opinion of cost for the blower replacement project. Future potential phases of work may include design of additional replacement blowers, an expansion of the aeration grids in the SBRs and/or bidding and construction phase engineering services.