RFQ Gateway Arch - Rainwater Capture Sediment Cleanout

The National Park Service is requesting quotes for sediment removal and inspection of the rainwater collection system serving Smith Square at Gateway Arch National Park in St. Louis, Missouri, under a Total Small Business Set-Aside (NAICS 238220 — Plumbing, Heating, and Air-Conditioning Contractors), with quotes due September 9, 2026.

The scope involves entry into a confined underground containment system located in Smith Square between the Gateway Arch main entrance and the Old Courthouse to locate and remove sediment and debris from designated sediment traps, clean and inspect the stormwater sediment trap separator, and photograph all areas before and after work completion. The contractor must provide all temporary services, equipment, tools, and skilled labor; obtain vehicle background clearance through the Parks Law Enforcement Dispatch Center; and deliver photo documentation in JPEG format within seven days of completion. Work must be completed within 15 calendar days of contract start, with five weather days included in the performance period. Normal business hours are 6:30 a.m. to 3:00 p.m., Monday through Friday; work outside these hours requires 48 hours advance notice and Contracting Officer approval.

All work shall be performed under a single contract. The contractor is responsible for all temporary facilities, utilities, water, and electric power with no additional metering or usage charges. A one-year workmanship warranty applies following project acceptance. The contractor must comply with National Park Service rules, regulations, and the Superintendent's Compendium for 2026; minimize public inconvenience; avoid disturbance to landscaping and trees; maintain vehicle access on hard surfaces only; and comply with all state and federal environmental regulations.

Site visits are strongly encouraged prior to quote submission to examine existing conditions. No estimated contract value or incumbent is identified.