The announcement of Steiner’s appointment, which heightened concerns from postal unions over possible efforts to privatize the USPS, was made Friday by Amber McReynolds, chairperson of the USPS’ Board of Governors, during a meeting of the independent group that oversees the service.

The U.S. Postal Service Board of Governors announced Friday that former Waste Management CEO David Steiner and a board member of FedEx as the 76TH postmaster general.

Steiner, who is expected to formally take over a postmaster general at USPS in July, previously was CEO of Waste Management for more than a decade.