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City staff say wastewater treatment plant upgrade is on track; ARPA funds and CMAR delivery used
Summary
City staff updated the commission on the wastewater treatment plant retrofit, reporting substantial concrete and excavation progress, ARPA and EDA funding, and use of the construction-manager-at-risk delivery for a new aerobic granular sludge system.
YANKTON, S.D. — City staff reported substantial progress on Yankton’s wastewater treatment plant upgrade at the Aug. 11 commission meeting, describing construction milestones, funding sources and programmatic reasons for selecting an aerobic granular sludge (AGS) process delivered through a construction-manager-at-risk (CMAR) contract.
The update explained why AGS was selected, the funding structure, the CMAR delivery and where the project stands on schedule.
Why AGS and CMAR City wastewater staff said an aerobic granular sludge process was chosen because it provides a smaller footprint and simultaneous nitrification/denitrification and enhanced biological phosphorus removal in the same tanks — functions that previously required separate anoxic/anaerobic tanks. Staff…
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