Upper Occoquan Service Authority
Pilot Study System
UOSA IFB 27- 01 GAC Treatment Optimization- 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
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