SAM #140P2026R0109

Repair and Restoration of Historic Potomac River Dams 4 and 5 – Construction Services and Specialized Equipment

This opportunity involves the U.S. Department of the Interior, National Park Service (NPS), Denver Service Center, seeking qualified contractors for the repair and restoration of historic Potomac River Dams 4 and 5 in Maryland. - Government Buyer: - U.S. Department of the Interior, National Park Service, Denver Service Center - OEMs and Vendors Mentioned: - Milieu Inc. (eel ladder) - Lakeside Engineering, Inc. (eel ladder) - Eagle Creek Renewable Energy (coordination for sluice gates) - Products and Services Requested: - Dam 4: - Eel ladder (marine grade aluminum, with substrate for juvenile eel) - Eel ladder water supply system (submersible pumps, air compressor, piping) - Concrete cap replacement (reinforced, 4000 PSI) - Vertical rock anchors (150 ksi all-thread steel bars, ASTM A722/AASHTO M275) - Secant pile wall (2-foot diameter) - Toe drain pipe replacement - Dry stack wall repair/rebuilding - Spillway sluice gates replacement (2 stainless steel slide gates, 60" x 96") - Instrumentation and monitoring equipment (automated piezometers, staff gauges, etc.) - Erosion and sediment control measures - Dam 5: - Concrete cap replacement (reinforced, 4000 PSI) - Masonry repointing and grouting (type N mortar, cementitious grout) - Rock anchor installation (2 1/4" diameter, corrosion protected) - Tremie concrete placement (underwater void filling) - Erosion and sediment control - Vegetation clearing and revegetation (native species, 1-year maintenance) - Monument installation (bronze survey monuments) - Signage installation (FEMA/USACE standards) - Unique or Notable Requirements: - All work must comply with historic preservation guidelines and environmental permits - Specialized eel ladder and water supply system with specific flow and velocity requirements - Coordination with Eagle Creek Renewable Energy for sluice gate work - Phased construction with seasonal restrictions and environmental monitoring - Instrumentation for ongoing dam monitoring and NPS staff training - One-year maintenance period for revegetation - Adherence to Maryland and federal erosion/sediment control standards

Description

The purpose of this Sources Sought Notice (SSN) is to gain knowledge regarding the types of interested businesses and their qualifications. Information obtained through this SSN by the National Park Service (NPS) will be utilized to develop the acquisition strategy. The amount of interest, or lack thereof, will determine the possibility of a Small Business or other Socio-Economic Set-Aside for solicitation and award purposes. Analysis of the quality of responses to this SSN will be considered in the Market Research being conducted and in the making of any set-aside determination for this requirement. See attached A14 SSN for more information.

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