Echo Lake In-Lake Phosphorus Treatment and Water Quality Monitoring

The City of Shoreline, WA is seeking a qualified consultant to design and implement an in‑lake phosphorus inactivation treatment for Echo Lake and to conduct associated water‑quality monitoring. The effort supports the city’s Cyanobacteria Management Plan and is partially funded by a Washington State Department of Ecology Freshwater Algae Control Grant. The contract will be for an initial two‑year term (with a one‑year renewal option) and the total compensation will not exceed $145,000. Key milestones include a question deadline (Aug 21 2026), proposal submission deadline (Aug 28 2026, 2 PM PT), bid opening (Aug 28 2026, via Teams), and award (Sep 4 2026). The scope covers dosing plan development, permitting assistance, treatment application, continuous pH monitoring, post‑treatment water‑quality monitoring, reporting, and data submission to Ecology.