CHOH 326202 Repair Historic Potomac River Dams 4 a

The National Park Service (NPS) is issuing a Sources Sought Notice to gauge interest and capability of firms for the repair of Historic Dam 4 on the Potomac River within C&O Canal National Historical Park. The project involves extensive civil‑engineering work on a historic masonry dam located on the Maryland/West Virginia border. Work includes demolition and replacement of the concrete cap, masonry repointing and grouting, installation of vertical anchors and secant‑pile walls, construction of a new eel‑ladder system, replacement of spillway sluice gates, erosion‑control measures, instrumentation installation, and full site re‑vegetation. The contractor must hold valid licenses in Maryland and West Virginia, provide detailed submittals (construction access, water‑diversion, erosion‑control, monitoring plans, etc.), and comply with NPS, OSHA, and state environmental regulations. No fixed bid deadline is provided; this is an information‑gathering step that will inform future set‑aside decisions. • Repair of concrete cap and masonry sections of Dam 4 • Installation of vertical anchors, secant‑pile walls, and toe‑drain pipe • Design, supply, and install an eel‑ladder and associated instrumentation • Replace spillway sluice gates and associated hardware • Implement erosion‑control, sediment‑control, and storm‑water pollution prevention plans • Conduct full site re‑vegetation and post‑construction monitoring • Provide extensive documentation, submittals, and as‑built drawings • Must hold Maryland and West Virginia contractor licenses and comply with NPS safety and environmental standards