REQUEST FOR INTEREST FOR CONSTRUCTION OF

Transmission Mains and Critical Valves for

DC Water and Sewer Authority

Progressive Design Build (PDB)

Washington, DC

This Progressive Design-Build (PDB) project consolidates four critical drinking water infrastructure renewals across the District of Columbia into a single contract. The work focuses on upgrading large-diameter transmission mains and critical valving systems to improve water pressure, enhance system redundancy, and ensure long-term service reliability for DC Water customers.

The construction scope of work for this RFP may include:

The Design Builder will provide complete design, preconstruction, and construction services for the following four elements:

• Critical Valves Replacement
• 16-inch Cast Iron (CI) Reservoir Road Transmission Main Rehabilitation
• 16-inch Cast Iron (CI) Rock Creek Park Transmission Main Renewal
• Large Diameter Water Main Replacement 8

Trade Opportunities:

Civil/Utility Contracting (open-cut excavation, pipe laying, utility support) | Trenchless Rehabilitation Specialists (CIPP lining and prepping) | Mechanical/Valve Contracting (vault piping, heavy rigging, large-diameter valve replacement) | Maintenance of Traffic & Traffic Control | Environmental Contracting (permitting and protection for work in Rock Creek Park) | Asphalt/Concrete Paving & Restoration | Bypass Pumping & Water Hauling Specialists