Virginia's eProcurement Marketplace #UOSA IFB 27-01

Retrofitting Carbon Contactors for PFAS Pilot Study and GAC Treatment Optimization

This opportunity involves the Upper Occoquan Service Authority seeking bids for a pilot project to optimize granular activated carbon (GAC) treatment for PFAS removal. - Government Buyer: - Upper Occoquan Service Authority (UOSA), located in Centreville, VA - Scope of Work: - Retrofitting one L/2 Building carbon contactor (two cells) for PFAS pilot study - Restoring upflow and downflow operating capability via modifications to the underdrain nozzle system - Implementing proof-of-concept evaluation for carbon transfer improvements - Potential Phase 2: retrofitting seven additional carbon contactors (fourteen cells) based on pilot results - Products/Services Requested: - Engineering and construction services for carbon contactor retrofits - No specific part numbers or OEMs are mentioned - Unique Requirements: - Pilot system must enable both upflow and downflow operation - Modifications should support PFAS study and GAC treatment optimization - Future expansion contingent on successful pilot evaluation - Location: - 14631 Compton Rd., Centreville, VA - All technical specifications and requirements are detailed in the contract documents.

Description

This solicitation is for Phase 1 of the GAC Treatment Optimization Project, which includes retrofitting one L/2 Building carbon contactor to serve as the PFAS pilot study system, restoring upflow and downflow operating capability through modifications to the existing underdrain nozzle system, and implementing a proof-of-concept evaluation for carbon transfer improvements. If authorized, Phase 2 will retrofit the remaining seven carbon contactors with selected improvements based on Phase 1 results. The work location is 14631 Compton Rd., Centreville, VA 20121. A complete description of the work is available in the contract documents.

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