Qualified Engineering Consulting Firms-Route 1 North Sewershed Capacity and Infrastructure Assessment

The City of Saco is seeking a qualified engineering consulting firm to perform a comprehensive sanitary‑sewer capacity and infrastructure assessment for the Route 1 north sewershed. The consultant must inventory existing gravity sewers and force mains, develop and calibrate a hydraulic model (pipes ≥ 8 in), evaluate four key pump stations, analyze three growth scenarios (existing, anticipated development, full build‑out), and produce a prioritized capital‑improvement plan with cost estimates. Deliverables include three technical memoranda and a final engineer‑stamped report, plus GIS and modeling data files. • Perform data collection, GIS inventory, and field verification (temporary flow meters, confined‑space entry as needed). • Model hydraulic capacity, assess pump‑station performance, and evaluate future demand using the Saco Comprehensive Plan 2022‑2034 and related growth documents. • Provide a phased Capital Improvement Plan with planning‑level cost estimates for sewer upgrades, pump‑station enhancements, and associated infrastructure.