Lake Ketchum Alum Treatment

This three‑year contract awarded to Aquatechnex, LLC requires the supply and on‑site application of aluminum sulfate (alum) and sodium aluminate to control phosphorus in Lake Ketchum, Snohomish County, WA. The work includes chemical procurement, storage, transport, and lake‑wide treatment using boat‑mounted equipment, with strict environmental and safety protocols. The county will pay for the chemicals at unit rates and for the contractor’s labor, mobilization, demobilization, and equipment usage, with prompt‑pay terms and PCARD payment capability. The contract may be extended for up to two additional one‑year periods if both parties agree. • Scope: Annual alum and sodium aluminate dosing (≈3,000 gal alum + 1,764 gal aluminate per treatment) for 2018‑2020. • Delivery: Chemical supply, on‑site storage, boat‑based application, GIS‑tracked dosing, and post‑treatment reporting. • Requirements: Environmental compliance (state ecology permit, invasive‑species de‑contamination), insurance (minimum $1M CGL), and PCARD payment without fees.