Facing new U.S. EPA air-quality standards thatwould require major upgrades at the city’s biosolids incinerator, leaders in Little Falls, N.Y., in 2012 asked the wastewater treatment plant team to study all options before moving ahead.A consultant study estimated the cost of bringing the incinerator into compliance at up to $6.2 million. City leaders wanted to know if there was a more cost-effective solution. For Sam Ostasz, chief operator at the treatment plant, the challenge became an opportunity to cap off a four-decade career with a project that turned green in more ways than one.Ostasz and his colleagues thought they “could
