Ultimately no shift will be effective against the dictatorship of the EPA. Only outright elimination of the Agency and disemployment of ALL its employees and officers can slay the beast. If you trim it and rationalize it and rationalize it you just prune it back. Without pulling up the roots you only make it healthier for when it is reinflated. If it still exists the next president, no matter what affiliation, will oversee accretions and restorations. It is too useful for providing future income for politicians.
Start by giving a bill to EPA for cleanup of Aminus River and tack on punitive damages like they would to a private entity. Take the cost directly out of budget. Thus 8bn budget hit with a 5bn charge in costs related to cleanup = a good start. EPA apparatchiks let go can transition to the exciting field of coffee service as baristas