The City of Ann Arbor is seeking a qualified contractor to remove, dewater, temporarily store, and later reinstall approximately 2,250 cu ft of sand from Tertiary Filter #4 at its Wastewater Reclamation Facility. The work must be performed under strict safety, confined‑space, and environmental controls, and completed within a 90‑day performance window. Bidders must submit a sealed proposal with required certifications, a 5 % bid security, and be able to provide performance and labor‑material bonds. • Scope: pneumatic vacuum sand removal from both filter cells, dewatering, on‑site covered storage (up to 3 months), and re‑installation of sand; include LOTO, PPE, floor protection, and runoff control. • Schedule: Pre‑proposal conference Jan 6 2026; questions due Jan 9 2026; sealed proposals due Jan 20 2026 11 AM; work must be completed within 90 calendar days after notice to proceed. • Requirements: certified check or bid bond (5 % of total bid), performance & labor‑material bonds, insurance (CGL $1M/$2M, auto $1M, umbrella $1M), prevailing‑wage & living‑wage compliance, safety & non‑discrimination declarations, conflict‑of‑interest disclosure.