WASHINGTON — William L. Wehrum, the head of the Environmental Protection Agency’s air office who helped to write some of the Trump administration’s most significant rules weakening climate change protections and supporting the coal industry, will resign on Sunday, the agency announced Wednesday.
In a statement, Andrew Wheeler, the E.P.A. administrator, praised Mr. Wehrum’s service as assistant administrator for the office of air and radiation and said the departure had been planned.
Last week the E.P.A. moved to replace an Obama-era regulation that aimed to shutter coal-fired power plants and move utilities toward natural gas and renewable energy with one that could help new coal plants open. Mr. Wehrum was the main architect of that measure, which the Trump administration calls the Affordable Clean Energy rule.
“While I have known of Bill’s desire to leave at the end of this month for quite sometime, the date has still come too soon,” Mr. Wheeler said in the statement. “I applaud Bill and his team for finalizing the Affordable Clean Energy regulation last week and for the tremendous progress he has made in so many other regulatory initiatives.”
Anne Idsal, who is currently the principal deputy assistant administrator of the air office, will assume the air chief role in an acting capacity, the E.P.A. said.