Opportunity timeline
In plain English
The Upper Occoquan Service Authority is seeking a contractor for Phase 1 of a granular activated carbon treatment optimization project in Centreville, Virginia. The work includes converting one two-cell carbon contactor into a PFAS pilot system, restoring upflow and downflow operation, and evaluating carbon transfer improvements. If authorized, Phase 2 would retrofit seven additional contactors with the selected improvements. Responses require a free eVA vendor sign-in.
About this opportunity
Phase 1 of the GAC Treatment Optimization Project includes, but is not limited to, retrofitting one L/2 Building carbon contactor, consisting of two cells, to serve as the per- and polyfluoroalkyl substances (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 by the Owner, Phase 2 of the Project will include, but is not limited to, retrofitting the remaining seven carbon contactors (i.e., fourteen cells) with the selected improvements based on the results of Phase 1. A complete description of the Work can be…
Time remaining
Closes Oct 6, 2026
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Bid details are gathered and summarized automatically. Please verify details at the original source.
Ref No.
BS-4DF484

