A former top Environmental Protection Agency (EPA) adviser who helped craft some of President Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE’s most controversial environmental policies will return to the agency as its chief of staff, according to a Friday report from The Washington Post.

Mandy Gunasekara, who ran the Office of Air and Radiation under former EPA Administrator Scott Pruitt Edward (Scott) Scott PruittJuan Williams: Swamp creature at the White House Science protections must be enforceable Conspicuous by their absence from the Republican Convention MORE, played a key role in writing regulations to roll back pollution controls for coal-fired power plants and vehicle emissions, as well as the effort to leave the Paris climate accord.

Since leaving the EPA early last year, she founded Energy 45, a nonprofit “dedicated to informing the public about the environmental and economic gains made under the Trump administration.”

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A call to Gunasekara was not immediately returned, and the EPA would not confirm her selection for the role.

“Ryan Jackson is chief of staff at EPA until February 21st, at which time Michael Molina will serve as acting chief of staff,” an agency spokesperson said in an email.

Jackson is leaving the EPA to work at the National Mining Association, which advocates for the coal industry among other clients.

Energy 45’s webpage credits Gunasekara with being “the chief architect of the withdrawal from the Paris Climate Accord.”

She also helped write the Affordable Clean Energy (ACE) rule, a replacement for the Obama-era Clean Power Plan. Critics said if ACE is upheld, it could hamstring the agency for years, limiting EPA to only narrow pollution regulations for power plants.

Gunasekara, like Jackson and current EPA Administrator Andrew Wheeler Andrew WheelerOvernight Energy: Smoke from wildfires has reached Europe | EPA postpones environmental justice training | UN report: Countries have failed to meet a single target to protect wildlife in last decade EPA postpones environmental justice training after White House memo OVERNIGHT ENERGY: House Democrats tee up vote on climate-focused energy bill next week | EPA reappoints controversial leader to air quality advisory committee | Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' MORE, previously worked for Sen. James Inhofe James (Jim) Mountain InhofeChamber of Commerce endorses McSally for reelection Overnight Defense: Top admiral says 'no condition' where US should conduct nuclear test 'at this time' | Intelligence chief says Congress will get some in-person election security briefings Top admiral: 'No condition' where US should conduct nuclear test 'at this time' MORE (R-Okla.).