Pruitt tried to reverse efforts to cut emissions from coal plants, kill tougher fuel-efficiency standards for vehicles, and suspend stricter rules on runoff from farms - moves that elicited protests and, in several cases, legal challenges by environmentalists and some states.
As a lobbyist at Faegre Baker Daniels Consulting, Wheeler represented Murray Energy, the self-billed "largest coal mining company in America". He added that Pruitt will be replaced on Monday by EPA Deputy Administrator Andrew Wheeler.
"Andrew is one of the most well-known, well-respected policy professionals in Washington on energy and environment-he knows everybody", Matthew Dempsey, a lobbyist who knows Wheeler from Inhofe's office, told the New York Times (paywall). "There are assumptions made that because the climate is warming that necessarily is a bad thing".
A senior administration official said Pruitt is "inching forward to the tipping point", but ultimately Pruitt's standing at the EPA depends on President Donald Trump.
Environmental Protection Agency Administrator Scott Pruitt testifies before the House Energy and Commerce Committee's Environment Subcommittee in the Rayburn House Office Building on Capitol Hill on April 26 in Washington, D.C. The focus of almost a dozen federal inquiries into his travel expenses, security practices and other issues, Pruitt testified about his agency's FY2019 budget proposal.
"It is extremely hard for me to cease serving you in this role first because I count it a blessing to be serving you in any capacity", Pruitt wrote in his resignation letter to President Trump, "but also, because of the transformative work that is occurring".
He called Wheeler "an appealing alternative for those hoping to continue to roll back key EPA policies", who has "spent a decade lobbying for just the sort of companies the agency regulates".
Iranian women post videos of themselves dancing in support of arrested teenager
It shows her without a mandatory headscarf, which is obligatory in the conservative Islamic republic. In 2012, Iran sacked the head of its cyber-police after the blogger Sattar Beheshti died in custody.
"He will be less political and more straightforward in his approach to the job, which is better for the Trump administration agenda in the long run". The group Save the US EPA keeps a roster of endangered programs.
His job had been in jeopardy since it emerged he had leased a property past year that was co-owned by the wife of a veteran fossil fuels lobbyist, whose firm had sought regulatory rollbacks from the EPA.
Scott Dworkin, co-founder of the Democratic Coalition: "Someone needs to make sure Scott Pruitt doesn't smuggle his $43,000 soundproof phone booth out of the EPA offices".
Pruitt is under a dozen investigations regarding ethics violations, including allegations that he enlisted government staffers to help his wife get a job managing a franchise of the fast-food chain Chick-fil-A.
Pruitt also had an employee carry out his personal errands, including researching the purchase of an old mattress from the Trump International Hotel, according to an interview transcript released by congressional Democrats last month.
Finally, it revealed Wheeler had criticized the president back during the campaign, calling him a "bully" questioning his character and saying Trump had "more baggage than all of the other Republican candidates combined".