The agency confirmed to Eyewitness News that James Treadaway left his position as director on Sept. 26, but did not provide a reason as to why. Officials called it a personnel matter.
The county engineer, Kevin Onuma, will serve as interim director.
Residents affected by Airport Fire considering legal action against Orange County
OC Public Works has recently fallen under criticism after one of its crews accidentally started in the Airport Fire in Orange County. The 23,000-acre fire quickly spread into Riverside County, destroying homes along the way.
It was 96% contained as of Thursday morning.