GS Global Private Opportunities Partners and Quad-C completed the investment in O6 Environmental for $20m.

Private equity firms GS Global Private Opportunities Partners and Quad-C, completed a $20m investment in O6 Environmental, a provider of environmental services. "We are excited to enter our next phase of growth in partnership with Quad-C. The Quad-C team has an established track record as a collaborative and value-added partner to management teams. We believe their operational expertise and deep experience within industrials and infrastructure services will be instrumental as we continue to drive growth," Dan Giesler, O6 Environmental CEO.