City of Portland CSO Master Plan Update (PDF, 76.59 KB)

The City of Portland is seeking qualified firms to update its Combined Sewer Overflow (CSO) Master Plan. The scope includes facilitating workshops, providing progress updates on mitigation efforts, reviewing and prioritizing existing and planned CSO projects, and developing a monitoring and modeling plan for the Northeast Pump Station sewershed, culminating in draft and final master plan documents. This consultancy will guide the city toward meeting long‑term control targets and optimizing existing infrastructure. • Conduct stakeholder workshops to refine scope, set priorities, and define direction for the CSO Master Plan Update. • Deliver a comprehensive progress‑update report covering CSO mitigation activities since the 2013 LTCP and 2020 Integrated Planning effort. • Review, assess, and prioritize both active and planned CSO mitigation projects, recommending the next phase of abatement measures. • Create a post‑construction monitoring and modeling update plan for the Northeast Pump Station sewershed to support performance evaluation. • Produce both draft and final versions of the updated CSO Master Plan for city approval.