Yellow River WRF Improvements

This $238.3 million award-winning project allowed Gwinnett County to divert, consolidate and treat flow from six aging wastewater treatment plants to this one facility. Originally constructed in 1979, the project required the complete replacement of the existing wastewater treatment process and a capacity expansion from 14.5 mgd to 22 mgd to meet the project’s objective of dramatically improving effluent quality and operational efficiency.

Work included a new preliminary treatment building, influent pump station, primary clarifiers, two 20-million-gallon equalization tanks, fine screen/lime facility, biological reactor basins, GE Zenon membrane filtration facility, UV disinfection facility, plant odor-control and chemical feed systems, sludge pump station and operations building.

Using construction management at-risk to execute and manage the complex project resulted in delivery six months ahead of schedule and more than $10 million under budget.