The City of Mesa (City) seeks a qualified design firm or team (hereafter referred to as “design firm”) with extensive engineering design, technical expertise, programming, and construction administration experience with Wastewater Treatment Facilities. The Plant System Evaluation phase will involve extensive coordination with assigned City of Mesa personnel to determine the overall plant infrastructure requirements to expand the existing plant. The current plant has a liquids treatment capacity of 30 million gallons per day (MDG) and a solids equivalent treatment capacity of 38 MGD. The proposed Phase IV Expansion is anticipated to increase the capacity between 6 MGD and 16 MGD. The final capacity of Phase IV will be determined at the end of the conceptual design phase. Once the Plant System Evaluation phase is complete, the City may retain the service of the selected qualified design firm for design phase services.