Deputy Administrator Robert Perciasepe, right, is staying put at EPA. (Ron Thomas/AP)

Bob Perciasepe is no sore loser.

As the deputy administrator of the Environmental Protection Agency, some observers figured he might have been in line to get the job heading the agency when it came open this year (though the fact that as a white guy, he didn’t add any diversity to the cabinet probably didn’t help him). But he’s obviously not letting getting passed over bug him.

He’s sticking around, says EPA Administrator Gina McCarthy — who did get the job.

She tells our colleague Juliet Eilperin that she couldn’t be happier that Perciasepe is staying put, where he’ll be her No. 2. “Thank God,” she added. “I tell him he’s one of my most precious resources that I have to protect.”

Perciasepe served as the acting director during McCarthy’s confirmation process.

McCarthy, who won Senate confirmation last month, also gave her deputy a shout-out during a speech on Tuesday at Harvard University in which she outlined the EPA’s agenda.