Description
The Cowlitz County Department of Public Works is seeking a qualified consultant to provide comprehensive groundwater and surface‑water monitoring services for its two county‑owned municipal solid waste landfills (Tennant Way and Headquarters). The contract will run for three years (Jan 1 2027 – Dec 31 2029) with a possible one‑year extension. The consultant must supply all personnel, mobile equipment, sampling and analysis plans, data management, reporting, and project management, and must perform at least 35 % of the work directly. Proposals are due Nov 18 2026, with a Q&A cutoff Nov 5 2026. No pre‑proposal conference is scheduled. The award will be made to the most responsive and qualified bidder following a weighted evaluation.
• Scope: Groundwater & surface‑water sampling, analysis, reporting, and project management for two landfills.
• Performance period: 3 years (possible 1‑year extension).
• Minimum qualifications: Washington‑state registration, bonding, insurance, ability to perform ≥35 % of work.
• Submission: 5 hard‑copy copies (2 signed), delivered to the RFP Coordinator by 3 PM PST, Nov 18 2026; electronic/fax not accepted.
• Evaluation: Technical qualifications, past performance, cost proposal; oral presentations may be required.
• Billing: Monthly invoicing to County Public Works, 14‑day payment terms.